into the bite of the rou'ers, wwch at the proper moment wjll again rotate and feed the sheet to ,-he . , drum stop, the distance from the rouers to the drum, is quite close, and a advance movement of the feed rouers, ta obtained. by the proper timing of the cam. I I$, on shaft II 81, to operate the connections,. u@here arranged, @to mdt. the poration of the shaft, the operatidn otherwise being ashereinbefore described. 10 In FUs. 15 and 16,.,certain raocU:ftc@tAoiii of th6 moisture regulating, meam: are shown. Instead of the roUer,28, as heretofbre- described, I niay employ a non-revolving ccmtact member I 60 of any swtable material such @as felt (see PU. 15), in 15 the form of a pad to ;;@gage the roll6r 27, with the. same &djusting means to vary the tension against the rouer: 2.1,. and *ipe. the roller, in a manner resaily understood, to carry, a, heavy or Ught coating of the moliture to the top@ of the joiler .20 27, to be applied to the copies. The felt pad may be so shaped as to engage the @face- of the roller the full length thereof with I& comparatively wide front @face, 16 1,. and. at- the t6p of the pad taper downward and rearward from the roller to pro25 vide a drain from the roller 27 at the. time this roller comes th a stop to Insert a.copy sheet to be fed, as;bereinbefore referred to. Another forni of this wiping 6Z d . rejulating ineans Is shown in Flg.@'16,@ber6@.the regulating, contact is 30 mad6 with a;@ yielding@ flexible@ strip .1 62 iof @ maetal, having 9, perfect@ draining positibn, placed at the angle shown, aiiii thd @ gtrip, wUl @ yield to cloic'. contact along the fuU length of the roller,.ai;@ the strip being carried in any suitable manner to 35 be regulated, such as already, disclosed. The operation of the @ invention has been reis ferred to in what has been above said, and it believed the same will..be entirely plain@..without further description. 40 Certain of the advantages of the inventio:)n have also been pointed out in. what has beilln above said, and others will be readily seen witli.,_ out further description. I do not linlit myself to the pELrticular details .1 45 of construction whicii.liave@@b een@set forth in the foregoing specification. and-, I Illustrated in the aecompanying drawings-.'As!tlie same refer to and s&. forth only@@certain@ ,@embbdiinents ial the th-, vention, azid lt,@is@ obvibus-l-th6,t the,.same niay -be 50 modified, . withiii@the@ scope: @of: the claihis hereof, without departing@@ from the spir@'t and scope of the lnvention.- Havftig@@ thus-; described my: invention, @what -I claim @as new-@and@"desire to secure by Letters '55 Patent Is as follows: 1. A copying. machine, comprising a supporting frame, a drum and arL impression roller coacting therewith, a gear train to rotate the drum and said roher lnterfiiittei3.tly or continuously, 60 M eans carried by the drum, to clamp a master sheet thereto, from which copies.iire produced and, prbvide to gauge stop for registration thereof, cloae to the ciamped en4 of the master, 65 including a clamp bar fixed to a rock shaft located In E@ bore longitudinany of the drum, adJacent the periphery thereof, said bore having a cutout extending outward of -the drum the fi@ll length thereof, and of a width less than the diarneter of the shaft In the bore, piovidinir said out-. 70 out with opposing walls, between which the clamp bar i$ adapted to swing, for clamping the master sheet between one Wall and'Lthe bar. with the end of the master eiigaging the shaft to limit the movement thereof irit6 the cut, which.wall jig 75 isL -tbe rear of the waU, in the dimUorA. of motion of the druin, udd other wall being a stop wafl , against which the copy sheets engage for regi stration thereof, said lmpressiozi roll6r, locate d of a vertical Une dmwn through the &xLs of the drum to provide an opeu passage 5 und er the. roller during I the @ time the cutout pau w,uuder the roller for the entrance of @ the cop y sheett to engage the Atop waU of the drum, duxi ng@@the@re@t2Deriod or corxtinued rotation of the' drum. 10 2. A copying:@niachine, comprising a drum, and an impre,sgon roller co-acting therewith, &upport ed for rotation in spaced side frums, said rolle r mounted In slidable beoxings for adjustmen t of @ the roller to verying, contact presaure 15 posi tionr.- with the drum, and removable outwar d of the side frames for the removal of the rolle r from the machine, means to move and reg ulate the bearings under a yielding pressure and thereby tlle roller, including a rock sbaft 20 Piv Otany 10cated in the side frames at one side of the bearings to be parallel with the roller and havi ng overhanging arms fixed to the shaft, with adju sting screws in the ends of the arms to eng age the bearings for independent adjustment 25 of the bearings to obtsin flist a uniform pressure of the roller With the drurn at both ends and alon g the Iength thereof, meana to rock the s4af t for instantly changing the said regwated unif orm pressuxe between predetermined and 50 var ying @ pressure positfons of the roller with the dru m and a position thereof to free the arms fro m the bearings to enable the withdrawal of the bearings outward of the frames and thereby the roller from the machine, including a spring 35 arm fixed to one end of the shaft, and having an operative engagement with a cam face portion, or its equivalerit, of an oscillating member pi,@ oted to the frame, and an arm thereof by whi ch it is shifted for adjustable positions there- 40 of . along.a sector, and means to lock the arm in any of said positions. 3. A copying machine, comprising a drum and an impression roller coacting. there*ith, a liquid cont ainer carrying means to feed copy sh6ets to the drum, moisten the underside thereof by one of a pair of feed rollers supported for rotation In the @ container, one roller above the other, the lower one of which supplied with liquid by pick ing up at @ the lower portion thereof by re@ 50 volv ing in a shallow basin located at the top of: the container, the bagiii being supi)lled from the mai n supply to overfiowing by a pump in the cont ainer, opemted by a connection from the low er feed roller means to regulate the quantity 55 I of liquid carried to the top of the roller to be tran sferred to the copies, and means to drive the low er feed roller, lnte)rmittently, or continuously, and means adapted to instantly change the drive fro m continuous to intermittent rotation, substan tially as specifled. 60 4. A copying machine, of the class specifled, I com prising a drum, and an impression roller coactit ig . therewith, means carried by the drum to cla mp a master thereto, said riieans connected 65 with means to provide a stop face against which cop y sheets are registered @dth relation to the posi tio)i of the master, and by the location of said. imp ression roher, set forward'to eiigage with the dru m at one side of the,axis thereof, for sheets 7 0 Lto be@ guided under the roller to engage the stop, Lm eo= to feed the -copy sheets to the drum, and appl y a moisture to the underside ther,-*Ofl said mea ns includim a liquid cont.ainer embodying a strtwture removably attached to the machine as

a complete unit, having meaas to feed copy sheets between a pair of feed rollers, one of which revolves in a shallow basin, at the top of the container, supplied with liquid to overflowing ca5@ pacity, by a pump within the container from 9. main supply carried by. the container, said overflow returned to the supply, means to drive the said feed roller revolving in the basin interniittently, to st6p the rotation. of the feed roller 10 during a short interval to feed a copy sheet to the roller&, means connected with the said 'driven feed robers to operate the pump, means to regu-late the quantit@ of liquid transferred by the roller to the sheets, and means to instantly change 15 the quantity so regulated between prede.terinined limits thereof from a greater to a lower quantity, and nieans to regulate and vary the contact pressure between the pair of feed rollers substantially as specifled. 20 5. A copying machine, of'the class specifled, comprising a drurn, and an lmpresslon rouer co-acting therewith, means carried by the drum to clamp a master thereto, said means connected with means to provide a stop face of the drurn 25 8gainst which copy sheets are registered -with respect to the position of the master, -and by the location of said Impression roller, set fc>rward of the drum to engage with the drum at one side of the axis of the drum, for sheets to be. guided So under the roller to 6ngage the stop, means to feed the copy sheets to the drum, and apply a molsture to the underside theri-,of, said mes@ns lnaluding a liquid container embodying a structure removably-attached to the machine a@ a com85 plete unit, having means to feed copy sheeti between a pair of feed rollers, one of which revolves in a shallow basin, at the top of the container, supplied with liqwd to overflowing capacity, by 40 carried by the container, said overflow returned to the supply, means to drive the said feed rober revolving In the basin continuously or Intermittently, means connected with said feed rollers to operate the pump, means to regulate the 45 quantlty of liquid transferrw to the sheets, and means to Instantly change the quantity so regulated, between pr@pdetern-dned UnLits thereof from e greater to a less quantity, and means to regulate and vary, the contact pressure between the 50 pair of feed robers, carried by the container, means to au . tomatically feed the dopy sheets to the feed and moistening rollers In timed relation whereby the feed rollers will feed the copies to the drurn stop. 55 6. in a machine of the hectograph,tym, comprising a drum and Impression roher co-acting therewith, means adapted to moisten, in adjustable regulated quantity and feed the copy paper to said drum and impressiolt roller, including a Go stmcture, embodying as a complete unit, for removable attachijaent to the ma,6hine, a liquid container sup'porting a pair of feed, rollers, one above the'other, th@ lower one of which Is suP@plied with liquid from the container, by an endo5 less belt suspended In the container to pick up from the bottom thereof, the Uquid and transfe,the same to said lower feed rouer said belt yieldlngly supported on iL roller, over which It trilvels, and. driven by contact with aWd lower feed roller, 70 a regulating rouer engaging the -add lower feed ro.Uer. located between the contact i)ortions 6f said pair of feed rollers and add Ilquid &Pplylng belt, mean to adjust the regulating rober to uniform contact with the'lower feed rober.-means to ViLry the Contact Pregs= of said rOUer 80- adj'usted, and means to lock the roller In said varying contact positions. 7. In a machine of the hectograph type, comprwng a drum and Impression roner co-acting therewith, means adapted to moisten and feed 5 the copy paper to said dn= and impression roder, Including a pair of feed rollers, mounted one abbve the other, In a liquid container the lower roller of.non-porous material, supplirted for rotation in bearings located In the ehd walls 10 of the container, and above a supply of liquid therein, means to drive the rober, means to interrupt the rotation of the roller, t6 provide timd to Insert a copy Into the bite. of the feed rollers, prior to feeding the copy between said rollers,,15 means driven by the lower feed roller to pick up liquld from the supply in the container, and transf6r the same to the lower feed roller, lncluding an endless belt suspended In the supply to the bottom thereof and mounted on a carrying.267 rouer over which the belt travels whereby the belt engages the said feed roner, meons to vary the contact Pressure of the top feed roller, with the lower roller, including sliding beaiings In which the roller is mounted, regulating arms,25 engaging the bearlngs over the t6p thereof, the arms extending forward, and having notches, for the ends of pull sprihgs pivoted to the container, and adjustable along the notches, for applying, more or less tension on the roner. 3 0 8. In a cop@Ing machine,.comprising a swtable frame, adoted to support one portion of a mechanism of a complete machine, norm&Uy, not removable, and A removable portion of the mechanism, said normauy non-remo@able portion In- 35 cluding a gear train, having a driving gear flxed to a driving slwt, to operate the train, an Intermediate gear, meshing with sttid driving gear, shaft pref6rably extending acro@s the machine 40 v@hd located forward of seid normally non-removable mechanism and between said removable portion and said normally non-removable portion, said intermediate gear meshing with a gear fixed to a drurn for continuous rotation thereof, 45 by said drive gear, and an impression roller,, coacting with and driven by, the drura, said removable mechanism including a liquid container em@.. bod@ihg a structure adapted to support, as a complete unit, attachable to the machine, the go mechanism for feeding copy sheets to the drum, deliver to the underside thereof a regulated uniforin coating of the liquid from the container, adaptedto be first regulatlid to uniform distribution thereof and derver a quantity greater than 55 required, and a separatc means to regulate the QuvntitY between predeterrnined points of adJustment, for a heavy, or light coating thereof, to the copies passed through a pair- of feed i,7611@ri, the lower--one of which supported for rotation 60 above the liquid, In the cont,ainer and supphed with the liquid from the bottom thereof by a traverng belt suspended therein, means to drive the lower feed roller 'li@termittently or continuousl@, Including an Intermediate ge@x, rotattlbly 05 mounted on the container. and meshing with a ponttnuously, driven gear being one member of a' friction member carried by the shaft of the lower feed rouer, by, which the rqller to driven, and meazis ca7led by the non-removable mech70, anism to engage the friction member to stop the feed rollers and relew the same in timed relation to feed the copies to the drum. 9. A WpYft macblne comprwm, iL drum; 4&vkW & 40,f&" agsmd which oopla are regla- TS a pump wi-thin the coritainer from a n2ain supply fixed on a shaft, wlitch shaft serving as a cam

tered, and an Impression rouer co-acting therewith, a pair of feed rouers adapted to feed the copies to the drum and the stop, the lower one of which Is adapted to receive Uquid from a supply, to be de)ivered in re"ated quantity to the underside of the copy sheets, during the feeding thereof , - means to drive the 16wer feed rouer Intermittently or continuously, including a friction drive member, providing in its preferred 10 form, a continuousiy driven tear loosely moimzed ori the shaft of the roller, said gear attached to a disc forming one part of the friction member, for cozeting with a companion disc slidably ilxed ,to the shaft, a friction washer Interposed be15 tween wAd discs, and provided with means to regulate the power of the friction dri ', iiieans ve to coritinuously drive the gear iind said disc and thereby the roller, means to intercept the rotatiori of the feed roller, including teeth on the 20 periphery of the 8aid disc attaehed to the, gear, adapted to be engaged by a tooth of the intereepting.means and thereby stop the rotation of the roller, means to operate the intercepting means, in timed relation to feed a copy sheet into 25 the bite of the feed roilers and reiease the some In proper timing whereby the copy sheet will be fed to the said stop of the drum, means connected with said intercepting. means, adapted to shift the position thereof, frorri an active p-sition 30 wherein the said feed rollers are n e driven, and when In the inactive position the feed rolier.-, are continuously driven. 10. A. copying machine, compn@ing a drum and an Impression, roller co-acting therewith, said roller located to engage the top of the drum, forward of a, vertical line dr@wn through the center of the drum, means to drive the drum continuously and thereby, the roller, said drum having a master clamping means including a 40 rock shaft provided with a clamping bar located in a bore adjacent the periphery and longitudinally of the drum, 9, cutout portion extending outward of the bore in which the bar may.rock and clamp a master sheet against one wall of the 4,5 cut, and the other wall provide a stop face against which sheets to be copied are registered, means to feed the. copies. to the drum and moisten the -underside thereof, including a pair of feed rollers adapted to be either continuously or Intermit50 tently driven and means to, drive the same, means to automaticg@lly feed the sheets from the top of a pile of blanks in timed relation to propel the sheets to said feed ronei-s, and continue the feeding action by the feed rollers to the drum 55 stop, In a slightly advanced timing action of the said feed meinbers, whereby the leading end of the sheets fed will engage the drum stop while the stop is passing under the impression roller to guide the sheet to the 'stop. 60 11. In a copying machine, comprising a pair of feed rouers,, rotatably carried at the tlop of a liquid container, one., of which supplied with Uquid, at one side thereof, by a traveling endless belt adapted to pick up liquid from the bottom 65 of the container, to use the full supply therein, ,with an amount greater, than an amount deuvered over the'roller to copy sh"ts passed between the rollers at another prrtion thereof, meana to regulate the amount so delivered to said To 'copies, located between said delivery portion, and that portion so receiving the supply, Including contact member adapted to engage. the rcller under L varying degrees of tension, to wipe the roua, mdd member having its upper contact end. akne to the rouer. tal)ered outward ' and downward away from the rouer to drain the aecumulatio n over the rouer brouglat. to the top thereof, whi ch tends to run back when the rouer is broug ht to a stop. 1 2. In a copying machine, comprising a sup- 5 portin g frame, a drum and an Impression roner coacting therewith a gear train to r6tate the dru m interihittently or continuously, means carried by the drum, to clamp a master sheet th@ret,,) and rv-i!axiq, connected with s'aid means, to 10 p@- ovide a ga7age stop for registration of the c6py sheetb ,, close to the clampedportion of the master, both spid means Including a.clamp bar.fixed to a rock shaft located in a bore longitudinally of the drum, adilacent the periphery thereof, said 15 bore having a cutout extending outward of the drum of less width than the bore, the full length thereo f, providing said cutout with opposing walls, between which the clamp bar is adapted to swing, for clamping the master sheet between 20 one wall and the clamp bar, the shaft of which limits the inward movement of the master into the cut, said wall l3H6ing t'tie rear wall of the cut in the direction of motion of the drum, said other wall being a stoi) face, against which the copy 25 sheets engage.for registration theieof, said impressi on r'oller, located forward of a vertical line drawn through tlle axis of the drum, to provide an open passage under the roller for the entrance of the copy sheets to engage the stop. - 50 l @-' A copying machine, comprising a drum 'iciapt ed to hold a master, an impression roller coacting with the drum, and'a complete unit compr ising a liqwd container, supporting mechanisrii for feeding copy sheeti to the drum ond 35 delive ring to the underside thereof a regulated unifor m coating of the liquid from the contairier, said container and mechanism be-Ing arranged and assembled for convenient unitary attachment.t o and removal from said machine with- 40 Out substantial disassembling of any,other parts ther eof. 1 4. A copying machine, comprising a, driim and an impression roller Co-acting therewith, and mea ns adapted to moisten and feed the copy 45 pep er to said drum and impression roller, includi ng a liq'uid container, a pair of feed rollers, and an endless belt adapted to pick up liquid:irorri said container and transfer the same in regulated q'uantity-to one of said feed rollers. 50 1 5. A copying machine, cgniprising a drtun an'd an impression roller . co-acting th6rewith,,mean.@ 'to feed sheets to be copied to the drum, and apply moist ure In regulated and predetermined quantity insta ntly adjustable- from a heavy to a light ap- 55 plica tion thereof, to the underside of the sheets to be copied, Including a pair of feed rollers with adju sting means to regulate tht- pressure between the rollers, together with the moisture regulating mechanism therefor, supporte' d by a struc- 60 ture embodying a liquid container adapted for rem oval from the machine, with the operating parts thereof in their fully working adjusted posit iorl as a eomplete unit, said container hiiving bear ings In the end walls to suitably support the 65 feed rollers one above the other, the lower I one of whieh:ftxed to a shaft, removable from the side of the container, for the removal of the ro'lle;7, and the upper roller carried in bearings slidable in runways In the container, to make eontapt 7o with said lower roller, means withiri the container, and actuated, by L said lower roller, ovpr which the moisture is transferred to the @copies, including a traveling endless belt, @ adopted to lat a greater SuPPly of liquid than required froui 75'

10 the bottom of the container, to be act,@d upon by said regulating meam before the moisture is transferred and applied to the sheets, closure Plates to el'ose the top of the container, over which the copy sheets are guided to and from said lower roller and under the companion feed roller, one plate at each side thereof, with a portion df the roller exposed, over which the copies are moistened and fed to. the drum. 10 16. A copying machine, comprising a drum and an Impression roller coacting therewith, a liquid container embodying a structure adapted as a 'complete unit removably attached to the machine, carrying the com@lete operative mechanism in the fully operating adjusted position t' iereof, including means to feed copy sheets to the drum, means to regulate the tension between the feeding means, means within the container to pick up liquid from th6 bottom of the con20 tainer and transfer the same to the copies, means to regulate the liquid picked up, to a uniform and even distribution thereof, before transferring the same between the said feeding means, means to instantly regulate the uniform distributed 25 liquid from a heavy to a light distribution thereof, between two predeternilned ptessure positions of the regulating means, and interm6diate po,-,itions thereof, and means to epntrol and lock the reguiating means at said predetermined points 30 and Intermediate positions thereof, said means located outside the container, for.ready manipulation. 17. A cgpying machine comprising a dnim and an impression roller co-acting therewith, a liquid 35 container embodying a@ structure adapted as a complete unit removable attached to the machine, carrying the complete operating mechanism in the fully operating adjusted position thereof, Including means t6 feed copy sheets to 40 the d@-M, and moisten the underside thereof, and means to regulate the tension between the feeding means, said moistening means, including a traveling belt enclosed within the container, adapted to pick up'liquid from the bottom of the 4r, container and apply the same In quantity greater. than required, to said feeding means at a position bl,fore and between which the liquid Is transferred to the copies, means to regulate the liquid so picked up, to a uniform and even distribution 60 thereof to said feeding means, said means con-' sisting of a movable contact member adapted to erigage with the liquid, the contact member carried In shdfng bearings, one at each end thereof, said bearings supported In the container, and 5r) @aving adjusting screws threaded therein and extending outward of the container to engage the ends of an equalizer bar, by a grooved headed part of the screws fltting In bifurcated portions thereof, for uniform adjustment of the con60 tact member with said feed means for even dis@ trillution of the liquid. and means to instantly i,(@g,ulate the quantity between two, predetermined positions of regulation, for a heavy or light distriIJution, and positions Intermediate thereof, In65 eluding a stud threaded Into the container on which the equalizer bar Is loosely mounted centrally tbereof, against a shoulder of the stud and betwee'n a hib of a spring arm flxed to t'@e stud to rotate the same for movi--ment of the bar, and 70 thereby the contact member, for varying the Position thereof, from one to the other and between said predeterrrin,,d regulating positions, said arm controlled at its free end by engaging tii any one of a series of perf,)i@ations to hold the arm and To IU coitnected parts Jxa Icnlk--,d -elation. 18. A copying machine of the claw OwMed, comprising a drum and an Impression rouer coacting therewith, a Ilquid container corrying means to feed copy sheets to the drum, moisten the underside thereof by liquid transferred to the 5 copies over one of a pair of rollers supported for rotation In the container, one rolaer abo#e the other, th6 lower one over which the liquid Is transferred supplied with the liquid by a travelIng endless belt within the container picking up lo the liquid from a main supply from the bottom of the co ntainer, said belt driven by said lower roller, means to regwate the quantity of liquid transferred to the copies, means to drive the lower rolls er intermittently or continuously, and mean to, 15 instantly change the drive from continuous to intermittent rotation. .19. A copying irnachine, comprising a druin and an impression roller co-acting therewith, means carried by the drum to clamp a master thereto 20 and prgvide a stop face for copy sheets to engage, including. a bore lengthwise of the drum, adjacent the periphery, a cutout portion outward of the bore to receive therein a rock shaft, the diameter of which Is greater than the width of the 25 cutout, and said shaft having a clanip bar attached, adapted to swing between the walls of the cut, to clamp a mastei sheet to one wall of the cut, ' and limit the Inward movement of the master into the cut by engaging the end thereof 50 against the sbaft, as a stop, a liquid container embodying a structure removably attached.to the machine as a complete unit, Including means to feed the co@y sheets to the drum and moisten the underside thereof, rneans within the container to 35 pick iip liquid from the bottom Of the container to be transferr6d by the feeding means to the copies, means to regulate the liquid to an even distribution thereof, dndmeans to Instantly regvlate the liquid between two predetermlned posi- 40 tions, from a heavy to a light coating thereof, and means to regulate and vary the contact pressure of the feed means carried by the container, means to automatically feed the copies to imid feeding means, which In turn feed the copies tO 45 the drum stop, in timed relation. 20. In a miiebine of the hectograph type, comprising a drum and gfi Impression-roller co-acting tbere.with, means adapted to moisten in.'adjustable regulated quantity and feed the copy paper 50 to said drum and impresston roller, including a structure embodying as a complete unit for removable attachment to the machine, a liquid con- - tainer supporting sheet feeding means, Including a pair of feed rollers, one above the other, the 55 lower one of which is adapted to supply the underside of the' copies vilth ltquid from the container, by a traveling endless belt enclosed in the container, the lower-end swended In the liqutd, to pick up from the bottom thereof, to be 60 transferred over said lower roller to the underside of the copy.sheets; means to d,rive thO belt by said lower roller, a regulating itoller, located in front of the lower roller,- adapted to contact with the liquid prior to the trawferring thereof 65 to the copies. to strip the liquid to uniform and' varying qiiantities, means to instantly vary the contact pressure of the regulating roller so ad@ Justed, @,nd, means to lock the rouer In said varyng contact positions. I . 70 21. A copying machine, compiising a drum, means. to,, feed copy sheets to the drum and moisten the.. undersid6 thereof, by liquid supplied from the, bottom of a container, to use tb i full supply therein, the liquid picked up by a 75

traveling belt, enclosed in the container, adapted to transf , er the same to the feeding means, mdd container removably attached to the machine as a complete unit, c-arrying mAd feeding and moistening means, an . d means to regwate the liquid before it is received by the copies, by a first regulation thereof for a uniform and even distribution in a quantity greatef than required, and means -for instantly reducing the quantity 10 bietween two predeter-inpd quantities from a heavy to a light application thereof, and means to regulate the pressure between said feeding means. 22. A copyii3g machine, 'comprising a drum a@nd 15 an impression rolier co-acting therewith, means to feed copy sheets, to the drum, including a structure embodying as a com lete unit for re. p movable attachment to the machine, including a liquid container supporting a pair of feed rollers, 20 one above the other, the lower one of which carrying liquid from the container supplied by a traveling belt enclosed'within the container, one end thereof suspended in the container to pick up liquid from the bottom thereof, and transfer 25 the same to and over said lower rober, said belt driven by said lower roller, and means to sup@port the suspended portion of the belt in spaced relation from the upper portion, meam to drive the lower roller intermittently, to stop and start so the rotatioa thereof at a time ind#pendenuy of the timing of the intermittent rot@ition of the drum,, and means carried, by th6-cont6iner to 9AJust the tension between the feed rohers. 23. A copying machine,,comprising a- drum@and an impression roller coacting therewith, spaced side frames between which the drum and roller are mounted, said roller enga ing the drum above 9 and forward of a vertical line drawn through the 40 axis of the drum, to provide an opening under the roher with relation to a cutout portion of the drum, when said cutout is in position under the rouer, a master clamping ineans adapted to clamp the master against one wall of the cutout, 45 and the other wall of which forms a stop face against which copy sheets are registered, to be close to the clamped end of the master, means to feed copy sheets to the drum, means to I regulate the pressure of the impression rober for 50 uniform alignment at both ends ihereof with the drum, including arding bearings in which the roller is moiinted, such " open rUnwaYs of the frames, a rock shaft rotatable in the said frames, located close to and parahel with the 55 roller, arms fixed to the aWt overh&nging thO bearings, with adjusting screws to engage the bearings, the ends of which enter in recessed pockets therein, to hold the bearings In their operative position against endwise movement, 60 means to control the movement of the rock shilftl first to a position to free the arms from the bearings, for removal thereof: outward of the frames, and thereby enable the removal of the roller.,. second, rock@ the shaft to the position where said adjustment for alignment ii made, 5 and third, to positions . betvieen two predetern-dned positions to instantly change for a heavy. or light pressure of the roller, including a spring arm fixed to one end 6f the shaft, having an engagement with a cam faced lever pivoted to one 10 of said side frames, the arm provided with a spring controred detent adapted to engage in perforations along a sector over which the arm swing@, to lock the arm and connecting mechanism in any of the said adjusted positions. . 15 24. A copying machiiie, comprising a dn= adapted to hold a master, an impression !roller co-acting with the drum, and a c6mplete unit comprising a liquid container supporting mecha- 20 nism for feeding copy sheets to the drum and delivering to the underside thereof a regulated uniform coating of the liquid from the container by means of an endless traveling belt, saidcontainer and mecham'sm being arraxitged and as- 25 ser@bled for conv6nient unitary attachment to and removal from said machine without substantial. disassembling of any other, parts thereof. 25. A copying machine, comprising a drum and 30 an impression roller co-actiiiq therewith, and means adapted t(y moisten and feed the copy pai)er to said drum and impression roller, including a liquid container carrying a pair of feed rouers mounted above and free of the liquid, 35 and ati endless traveling belt witbin the container, adapted to pick up liquid from the bottom thereof, to supply a quantity greater than required to said 'feeding means to moisten the copies, and means to adjust the quantity so de- 4o livered by a movable contact member, to a uniform distr,ibution thereof and a separate means to instantly change the dontact piessure between two predetermined and intermediate positions thereof, for. a heavy or a light distribution. 45 26. In a copying machine, comprising a pair of feed rollers, rotatably carried at the top of a liquid container, one of which is supplied with liquid, at one side thereof, by a traveling endless belt adapted. to pick up liquid from the bottom 50 of the container, to use the full supply therein, with an amount greater than the amount to be delivere d I over the roher to copy sheets passed between the. rolleri at another i)ortion thereof, means t(y, regw&te the amount so dbjivered to 56 said copies, located between said@ tielivery portion and said poruon receiving the supply, Including a contact member adapted to engage the roller under varying degrees of tension. BEEWEART W. PITTMAN.

Patented Jan. 2, 1M 2@185fi82 UNITED STATES @PATENT OFFICE COFMG lucmm ]Uinhart W. Pittnum, Jackion Betchts, N. Y., assignor to The Beek Dupfleator Company. a corporation of New York AppHeation October 22, 1937, Serial No. 170,363 26 CW=. . (cl. ioi-ii2.5) This invention relates to copying machines, and more particularly to that . type of machines known in the trade as spirit machines, wherein -a master letter or the like is printed or typed, or otherwise prepared, with a suitable hectographic Ink or carbon, on the reverse side of the master, which is in the negative form, and with this side turned outward of the drum to which it is attached, copies are produced that are given a 10 surface moistening on the side of the sheet which contacts with the mastek under a suitable pressure roller to take off some of, the ink from the master. The primary object of the present invention, is 15 to provide a simplo, reliable, and efficient working machine, easy to handle gndladJuBt to its best working conditions, operated either by hend or autbmatically, adapted with the present itaprovements for producing a higher grade of 20 work, and a greater number of copies frcim one ihaster, than Is usually obtained on the prewnt type of machines. Other objects herein obtained, are by the use of improved adjusting devices,of the niachine, 25 such as the im@ression roller co-acting with the drum, to make a quick adjustinent from a great@er or less contact between the master sheet and the copy, providing-by,this means a greater number of copies obtiiiied from one mastc-r shei3t So and maintaining a uniform shade or color @i the imprint taken from the master. The amount of moisture d6livered to the copy sbeet to be copied, may likewise be instantly changed from a heavy to a light coating, or reversely, that is 35 delivered by a feed roller, the lower one of a -pair, that feeds and applies,the moi3ture@to@,the COPY sheet, and a contact roller above. the @rdoUtVning roller acting as a companion feed i@buer 'tith' the moisteriing roller to propel the abeets to tbe (In=, 40 tin reaulated to be quickly changed to, varyiug @contact pressures. Another. object Is the@ provision o-C mean@ @@:to -f. @ @ I - Obtain a perfect@ register with Ont,,another of ; the sheet-t to be, copled,,with.,@respect: to. @Ue Po. ,sition bf the muter -fixed@ @tol@@ the dr=, wl2ich includes a master. clamping ineraber, so,located in a cutout portion@ of the drtm that one wei.1 thereof becomes a pixt.of the registering me&=. A still further. object, is to proftde means to 50 rot te the feed rollers continuously,, or intermitIT la teritly, these being the aforesaid moistehing roller and the contact f6ed roller cooperatlng therewith, for propelling the moistened sheets to the register stop position of the &um. When feeding the machine automaticauy tlio rgllers may be continuously driven, or tnte.rmittently If desire d, since an iiutomatic feed member at the pro per time and adjustable for the purpose, foi6 es the sheets to be copied between the revolv ing or stopped feed rollers, to reach the 5 stop of the drum, while t ' he drum is at rest and abo ut to revolve again, or during the continuous rota tion thereof. When feeding by hand, the feed rollers are Intermittently stopped, to provide time to insert the sheet Into the bite of the 10 rolle rs, which start to rotate again at the proper time of rotation to propel the sheet to reach th6 stop of the drum, in the same manner as does the cont inuous feeding action of these feed rollers. I A still further object is to provide a container 1 5 to hold a suitable supply of the moistening fluid, whi ch container Is so constructed to be a removable unit, carrying the aforesaid moistening roll- - er, and its companion feed roller, together with othe r mechanism, to deliver and regulate the 20 moi sture applied to the copies. One form of this mech anism for applying the moisture o feed rolle r, provides 8, shallow baft, In the top of the.co ntainer, conforming to the lower portion of the moistening roller in which the same re- 26 volv es, to. be constantly supplied with the molstui@e, by a pumping system in the container to supply the basin from the main supply of the coniai rier, and maintain a uniform level thereof In the @asin by an overflow -from the basin to 30 the maiii supply of the container, and 8, regulating roller, to regulate the amount of moisture takenfrom the basin, and delivered at the top - of the exposed.portion of the moistening roller to transfet the same to thli sheets to be copied, 85 and in another form thereof, the basin and the pump are, omit ed, and instead,. an endless belt -t is suspended in the liquid, to the bottlom of the contai ner, aiid driven by a roller over which it Is.: supported and held against the, moistening 40 roller which drives the belt, and thus suppues the : Uquid -to -the same. , @ @ A@ dffl fm-ther object is to provide a universal feed @tablei or work holder,. arranged to feed the 45 sh.eet s therefrom automatically, -or.. by han.d. When feeding automatically, the top sheet ofthib pile of bIW31m is maintained at a uniform top positio n, to be engog@d by a. feed member, to move the sheets into the feed rouers, while these roll 50 err3 are constantly or intermittently driven, as may be deidred, ond when feeding the blanks by hand, the roners are preferably internlittently driven, and this top po6ition of -the bla@ks, Is not required, and the means for so supporting the 65

2 blanks, as well as the feed n@ember, may be moved to an inactive position. Other objects of my lnventioii will be set forth in the following descriotion and drawings, which 6 illustrate certain preferred embodiments thereof, or wM be obvious therefrom without being specifically pointed out. It will be understood that the foregoing general statement of the objects is inteiided merely to generally explain the same, 10 and not to limit it In any manner. With the above itnd other objects of the invention In view, the invention consists in 'the novel construction, arrangement and combination of various devices, elements and parts, as set forth 15 in the claims hereof, certain embodiments of the same being illustmted In the.'said drawings and described In this specification. In the acdompanying drawings, FIg. 1 is a plan view of my improved copying 20 machine, certain parts thereof being broken away to more clegrly show the working parts. Flg. 2 Is a portion of the inachine, in plan, parts In section, to show how the gearing is arranged. 25 , Fig. 3 is a side elevation of the machine, as seen from the left In Plg. 1, showing the feed table, and the automatic feed member in its dperative position. lqg. 4 is a sectional view of the machine, taken on line " of Fig. 1, as seen from the left, Indicated by, arrows. . Fig. 5 Is a perspective jiew of the liquid container, shown as a rembvable unit, embodying the feed rohers, the regulating roller, the basin In 85 which themoisteningroller revolves,and thepump to supply the basin, from the main supply of the container. IRg. 6 is an en.d elevation of the contaffier unit, as seen from the right of Plg. 5. Fig. 7 is a plau view of one end of the container, partly In section, to show the construetion. Plg. 8 is a perspective view of the work holding table, showing the means for elevating the blanks 65 to maintain a uniform level of the uppermost sheet of the pfle of ble@ft. Flg. 9 Ls a side elevation of a portion of the machine, showing the means for quickly changing the feed rouers from constant to intermittent 60 rotation. Mg. 10 is iL longitudinal section of the drum, to &how how the same is constructed and mounted. Fig. 11 Is a longitudinal section of the moistening and feed rouer. W Flg. 12 Is a modification of the means for supplying the liquid to the moistening roder, from the main. supply carried in the container. Mg. 13 is a modiflcation showing in a diagrammatical manner, my Improvements as applied to 60 a machine In which the drum Is continuously driven, together with continuous rotation of the feed and moistening roller, and automatic feedIng of the blanks. FIg. 14 Is a modiflcation, sinfflar to Fig. 13, and 65 shows the feed and moistening rouer lntermittl,ntly driven. Plgs. 15 and 16 are moclffled forms of the meam for regulating the moisture. As Ehown in the dr-a@wings, I provide, as is the 70 general practice in this type of machines, a pair of side ftames, 2 and 3, held In spaced relation by tie bars, 4 and 5, with one side frame on the inner side thereof, provided with a tmin of gears, Including a pinion 6 driven by a crank 7 from the 75 outside of the frame, for hand operation. of the inachine, the pinion meshing with a gear 8, . loosely mounted on a stud, -to which gear, a gear 9, is attached having an interrupted part of its- teeth arranged to engage a gear 10, having an iliterrupted portion, which gear is flxed to the drum 5 of the machine, to provide Intermittent rotation of the drum. The ratio of the gears as here shown, provides for four turns of the cmnk 7, to rotate the drum one complete.rotation, and during one rotation of the crank the di-um is at 10 rest, due to the @interrupted portion of the gears. Wi.th my improvements the drum could be. continuously operated, I will first describe my invention, however, in connection with the interrupted action of the drum. 7he drum indicated at D, is 15 loosely mounted to rotate on a shaft 12, fixed against rotation to the side frame 2, by a nut and washer, as at 13, the gear I 0 being adjustably fixed to the drum. The drum D, a cylindrical structure, has end 20 wblls 14 and 15, with central openings for the reception therein 6f hubs, 10 and 17, fixed to the walls by screws, at the end 14, the hub 16, has the gear 10, with a sleeve-like huV 10' mounted on the hub 16, at one end of the sleeve an axm 25 10" keyed to the sleeve 6f the gear, whicli arm has an arcuate slot 14' through which a binding screw 14", threaded into the slde wall 14, holds the gear in any desireo adjusted position, to enable. the adjustment of the drum with respect to a 80 master clamping bar 18, carried by the drum, with relation to the location of an impression roller 19 for do-acting with t,he drwm, which. roller serves an Important function, when the drum is brought to rest, at which time the clamping bar I 8 Is 35 directly under, the rouer 19 (see Fig. 4). The clam"ping bar I 8 Is located In a bore 20,@ in ti reinforced rib portion 21 of the drum, extending from end to.end, on the inner side thereof, the bore openedoutward to the periphery by 40 a cut 22 made, therein, the fuH length of the bore, for a blade 18' fixed to,the bar -18, to swing between side wAUs 221 @And 2211 of the cut, one of which as 221 is used to clamp the end of the master sheet to the. drum,'indicated at -M by.45 broken lines, this clamping wall 22' being li2 the rear of the wall 22", in the direction of motion of the drum (see arrow). The wall 2211 when the drum is at res t, as shown in Fig. 4, is used as a - stop face, against which the sheets to be - copied 50 are reglstered. The location of the impression roller I 9 is not directly over the center of the drum, but somewhat at one side, as shown (see particulariy Mg. 4). This enables the entraiice of the sheets to be copied under the roller 19, 55 which provides, due to this offset position, a clear path for the sheets to enter under the roller and guided thereby to properly register againstthestopwaU22". Itisfurtheradestrable feature to thus locate the roller I 9, to be - closer 00 to the copy sheet feeding rollers, one of which applies the moisture to the imder side of thesheets, since a very light appreation of the fluid used Is quickiy evaporated, and loses its effect for taking off the Ink from the master sheet, - before 05 the dopy sheets reach the stop face of the drum and during the time the Impression Is being made. The bar 18, with its blade 181, is urged against thti wall 221 by a spring 1 Oa fixed to the drtim, and to, one end of an arm 18b by which the 70 bar is rocked to move the blade for entrance of the master shei6t (see Plgs. I and 3). The bar IO, or shaft, as It may be termed, is of a diameter greater than the width of the cut, and provides, when the shaft Is In the bore, a stop'for the end Its

-of the master to Umit the movement thereof Into the cut, and assures aligz)ment of the master with the drum, and it will be further noted that the clanip bar and shaft are readily removed from the kde of the drum. The feed rollers are. supported at -the front upper portion of a liquid container,; to be as close as possible to the roller IO, the container so arranged to be a complete rem6vable unit -(.see Fig. 10 5), including in its entire make-up, a tank-like structure 25, of suitable i)roportions, to hold a fairly large quantity of liquid, from which to'draw by a pumping action to maintain At a constant level a small quantity of the liquid in a shallow 15 basin 26, located closely and somewhat conforiiiing to the curvature of the lower feed roller, indic@ted at 27, whereby the lower part thereof engages In the liquid to be constantly picking up the liquid as the roher is rotated, and the amount 20 brought to the top of the roller is regulated by, a contact roller 28, mounted at the front thereof. The basin has a forward extension 261 to catch,, the drip from the contact roller, that Is squeezed away as a surplus, the basin discharging its over25 flow over the edges of the shallow basin: The roller 27 is rotatably mounted in bearings in the end walls of the container, one of which, indicaied at 29, at one end, as in Flg. 7, and the other, carried by a plate 30, both bettrings being So flxed by screws to the end walls of the container. The roller 27 is supported on a shaft 31, which extends outside the container at each end, and is here shown driven by a friction drive, indicated at P, including a pinion 32, flxed to @ sleeve 33 35 of a disc 34 loosely mounted on the shaft, a friction washer 35, of suitable -material, interposed between the disc 34 and a disc 36, slidably mounted on the shaft, and flxed against rotation, bY a pin 37, in the shaft, which engages in a slotted 4o part 38 in the hub of the disc 36, and is adapted ,to rotate the shaft 31 by a regulated pressure applied to the disc 36 against the iriction washer and the disc 34, by a spring 36" regulated by a threaded clamp collar 371. An,intermediate gear 39 carried by the plate 30, nieshes with the pinion 32, whicli drives the feed roller 27, and thereby a cornpanion feed roller 27', being the one directly above the moistening feed roller 27, and the regulating roller 28, when the unit Is in positio)a on 50 the machine, at which time the gear 39 will engage and mesh with the pinion 0 of the operating handle. The unit is held in place on the machine by ser'etvs entering perforated lugs 40, resting on siipports 41, extelnding from the side 55 frames, having threaded bores to receive the screws. The companion f4@ed roller 271 is supported in suitable bearings 42, tha;t enter slotted upstanding extensions 43 of the conttiner. These bear60 ings ride freely in the slots, to allow the roller toL cont'act with the roller 27, b6low, to regulate Itself to any uneven conditions of this roller, and may be brought to bear with different degrees of pressure on the lawer roller by spring controlled arms. 65 44, pivoted at one side of the exten@ions 43, with overhanging portions to engage the bearings, and thereby force the roller to make contact, and regulated to varying pressures by a spring .45, pivoted at 46, at one end, end the free end, with To a hook connection adapted to engage any one of a series of iiotches,in the overhanging portions of the arms, by this construction the roller may be quickly removed, when desired. To pump the liquid from the supply, to main15 tain the level in the basin, a pump 47, is at-, tached to the bottom of the container, and close to one side, to make ready connection for operation with a cam 48, carried by the shaft 3 1, of the roller 27, which engages a rock arm 49, fixed to a short shaft 50, passing through a bearing 51 in the side of the container, and the shaft has an arm 52 Inside the container that engages a piston rod.53,.slidable in the casing 54, of the pump in a bore 55. 7be lower end of the bore has an Inlet 56, open to the supply of liquid in the con@. 10 tainer, when the piston rod is elevated, to 8@llow liquid to freely enter under the piston, which opening is closed -on the down stroke of the piston, and. enters an outlet port 57, communicating with a discharge pipe 58, which feeds the basin, In is. a manner readily understood.,, The rock arm 49 is held in engagement with the cam 48, by a spring, 59. The regulating roller 28, is mountid@ in bearing members 60, sUdable at one end on a pin 9 1, in a bifurcated slot 20 02, at th6 rear end of the bearing members &n angular portion 63 at the forward en(is i.9 i;@@ed and threaded to receive -threaded thumb screws 64, which support this end of the bearings, ietnd the, roller is mounted, in bores 65 close to the bi- 26 fureated ends, so the two rollers will make proper contact with each other. The thumb screws 64 pass through loose bores 66 in the front wall of the container, and are eiigaged outside thereof, by an equalizer bar 67, which bar Is carried cen- 30' tral thereof, on an adjustable regulating screw stud 68, threaded at one end, as at 69, supported in a threaded flanged fitting 70 fixed,to the center of the container. The studL68 is reduced to receive the boi, which has a bore 7 l,'to fit loosely 35 on the reduced end of the stud, to rest against a shoulder at the inner side of the bar, and held in position on the stud by an indicator arm 72, the hub of which fits the stud, and between which the bar 67 is freely supported. The 6nd of the 40 stud has a slot for a screw driver, by which the stud may be set to the proper position, with respect to the indicator arm 72, and the hub, on which the arm is supported, is split and is s'ecured by a binding. screw 73. The arm is 6f 45 spring material, and has at its free end a finger piece 74, the Inner part thereof pointed to engage in perforations 75, locat&d and suitably spaced In the ert of motion of thO arm, provided in the front wall of the container. -50 Before this coristruction, the eqii-alizer bar 67, is first positioned between the shoulder of the stud,, and the split hub of the arm 72, when this arm is in the flrst position or perforation, as at 751. ThesplithubisthenLelampedbythebind- 55 ing screw 73, the thumb screws are then rotated, which move the bearing members 60, and thereby the roher 2,8 to engage, with t-he I moistening roller 27, t6 its greatest contact positioii, uniformly at each end thereof, thereafter u@on the lo shifting of the spring arm 72, along the perforations, the stud by its threaded end moves the e4ualizer bar outward, and the bearing members follow, thereby releasing the contact bletween. the rdllers to any desired amount. LThe bar is 65 'slightly bowed inward to provide a light spring action, to inaintain a rigid action of the connecting@ menibers. The container iS LalSo provided with cover plates, one in the rear, indicated at 76, which fits 70 quite close to the roller 27, at one side thereof, so the top of the roller is exposed, and the other tide of the plate extends outside the container, and serves to guide the copy sbeets under the roller IS, and against -the stop waH 22 of the clr=. 161,

At the front of the container, a similar guide and cover plate 77 is shown, on which the copies are fed to the rollers 27 and 271, which are the feed rollers. 6 @ At the side of the container a filling spout 78 is fltted with a screw cap 79, through which the container may be filled, and an indicator arm 80 is connected to a short shaft 8 1, passing through a bearing 82, and an arm conxiected on the in10 ner side with the shaft carrying a float 83, the indicator will show on the outside of the container, when the desired amount of li4uid has been received therein, and when the same is empty. i5 By this construction of the copy moistening and feeding means, arranged as a complete unit, I am able to quickly remove the entire up4 from the machine, in its fwly adjusted operatint@ condition, or replace the. same, for any do@ired 20 reason, together with its complete co-operative mechanism, including the means for instant regulation of the roller 28 by merely shiftihg the spring arm 72 to increase the fflm of moisture or .decrease the same,'carried to the top of the 25 roller 27, to thereby obtain a heavy or light copy, and for the regulation of the companion roller 27' to varying pressures of this roller with the roller 27, by the spring controlled means, and this construction also enables the , ready and qiiiek 20 removal of this roller from its mounting. The iinpr6ssion roller 19, having, as heretofore described, the preferred location thereof, to one side of the drum, to enable the blank sheets to be guided under the roller,.to engage 35 the stop face 22 'I, is further prlovided with means for rapid adjustment to varying pressures, after first I regulation thereof,' for uniform confact at each end, and along the length of the drum. Thereafter, as the work continues in making the 40 copies, it will orily be necessary to shift a lever, to obtain a change of pressure, bet*een the high and low pressure reqwred. When the master is first applied to the &um, and before imprihts have been made therefrom, the carbon or ink, 65 from which the copies are produced, will deliver a heavy imprint to the copy, and at this time a light pressure of the roller 19 will not take sO much of the ink froiii the master, as wotild be , the case under a uniform pressure, as is usually 60 done, throughout the run, for a given number of the copies gener&Uy made from one master. I am able to materially increase the number -of copies obtained from one master, as stated, b y first adjusting the roller I 9 to make a uniform SS contact,, as stated, by r6gulatink screws, 84, located in Eirms 85, flxed to a rock shaft 86, mount@ ed in bearings of thd frame, the arms overhanging the bearing members 87, In which the rouer 19 revolves, and the bearings are movably. car00 ried, in runways of the frame, to enable the roller to make close contaet with the dr@am, In aU positions thereof, the, bearings being held in position against lateral@ outward movement by the regulating screws engaging in slightly recessed S6 pockets at the top of the bearings in wlil:ch the ends of the screws enter.. By lifting the arnis, the bearings are readily removed from the ends of the roller and withdrawn outward of the franies, iind thereby the roller removed from the 70 machine. Under each bearing 87, a spring 88 supports the bearinis against the screws 84 (see Figs. 1 and 3). This shaft 86 is rocked by a spring arm. 89, controlled by a cam 90, of a regulating arm 9 1, pivoted at 92 to the side frame 2. The arni has a spring detent pin 98, with a flnger piece fbr withdrawal of the pin from perforations 94 In a sector of the side frame for positioning the arm and cam, to exert more or less pressurib, to the spring arm 89 and thereby. the roller 19. By this arrangement, when the parts have been 5 carefully r6gulated, as stated (which only nedds to be done once, for a perriianent adjustment thereof until some change in type of work or. c'ondition of the niachine occurs), it Will only be necessary theieafter to move the arm 91 aiorig' the perforations 6f the sector. When, the master is first applied, the pressure Is at its lowest predetermined position, And the arm.91 is set, in the lowest pressure perforation t)f the sector, and as the work progresses in producing the - copies, 15 the arm is changed to increase the pressure M required. By this means a greater number of copies niay be produced from one master, since the master is not forced to give a greater amount of ink. than is required to maintain a - uniform 20 shade and' color, of the imprint taken by the copies. . The arm 91 also may be shifted to a position along the sector to free the screw ends of the arrn I s 85 from the bearings, so the beaiings may be removed from the'ends.of the roller, as 25 before stated. To feed the copies to the feed rollers 27 and 271, by hand, or autoinatibally As may be de6ired, a feed table 95 is mounted on ard extensions 96 of ihe side frames 2 and 3, the feed table pref- 30 erably being carried by a bar 97, attachable to the extensions, on which the table is movable for adjustment from sid,e to side,' and arianged to.be readily applied, and removed from the machine. As here shov;n, the bar is held at each end by a 35 thumb screw 98, tapped into.the extensions. The tablei see Flg. 8, in its' preferred form, Is made.up, by a plate 99, forming the bottom, of suitable width, bent up at the d6livery end, by a right angle bend upward, as at 100, and ag.ain bent for- 40 ward to provide an apron-Hke piprtfon 101, that when in positiozi, as In I Fig. 4, is resting ovei.the front portion of the plate 77 of the container 25, over which the sheets are guided to the feed rollers. At the sides of the plate 99, angle members 45 102 are attached to the plate the full'Iength thereof, to provide the side walls of the box-like structure of suitable width, between .@hich, and a: pair of adjustable side -plates I 03, the pile'of copy sheets are @mided, the@fr ont ends thereof So engaging the wall 100. The plates 10@ have projecting studs 104, that engage in bearing hubs I 05,: for adjustment of the plates to var3@ing widths of copy poper, and for true angnment with the front ends of the sheets with the feed rollers, and 55 the hub& have set screws to -bind -the studs iri their final adjusted position. A ' coinpleir@ent of spring members 106, fixed to',the extreme front end, on the inner top side of the table, the free ends thereof extending upward and Joined by a 60 cross bar 107.- The springs are so arranged as to support a pile of sheets iind to yield under,. the weight of the full pile to assume a flat position on the plate: 99, but when the sheets are removed one b@, one, will gradually raise the pile, till th e 65 lowermost sheet is elevated to make slight contact' with the under side of a cross -bar I 08, best seen in Fig. 41 thi@ bar being flxed to the. top of the angle members 102. The spring members 106 are active only when the machine is set for 70 automatic feeding, and when feeding by hand these springs are pressed downward, to any (legree desired, and lotked, so the table will be free for handling the blanks to move them fdrward under the cross bar I 08, into the bite of the roU- 75

en il and 211, which at this thne wM be momensomewhat sooiler. The feed wheel, indicated at tarily stopped, or If desired continuously rotated. The spring members are held in the locked position by a threaded rod 109 extending downward from the center of the cross bar 107, passing through an opening in the table, and a thumb nut turned up on the. rod, to hold the springs down. The thumb nut may be tumed back, to the end of the rod, which Is upset to prevent the nut from 10 leaving the rod, when the springs are used for automatic feeding, The power of the spring members 106 may be regulated to increase or decrease the lifting. ae@ion, by a bar III', positioned under the springs 15 and adjustable In slots. 1061, in the table, in which@ the bar Is moved forward nd ' k and' locked under the table by nuts on,@th(e c@!-a' )ing screws f 06a, or In any desired maianer. The table may be shifted, for sid ment 20 thereof, aldng the bar 97, ardable on the.bar in bearings.97' fixed to the table and clamped by a clamp screw 97". The front wall fOO of the table, is provided with a thin rubber I 10 I 1, the top of which extends to and lies over the rounded 25 corner of the apron IO 1 and held by a plate I IO, to the wall 100, as by scr6ws, the rubber acting as a separator, to p@event feeding of more thah one sheet. The friction drive P, for rotating the ieed roll 27, and thereby the roll 271 by contact there30 with, is so reiwated to drive thete rollers for con. tinuous rotation, as before stated, for automatic feeding of the copy sheets, . or the rollers may be intermittently driven for hand feeding, the latter being done by providing the disc 36 of the friction, member with teetli, i I I on its periphery, to be engaged by a tooth- I 1 2, on an arm I 1 3, of a rock lever. 1 14, pivoted at 15, on the outer side o . f the frame 3 (see Flg. 9), the lever operated by a cam II 6, on a cam shaft i 17 which shaft is driven 40 by a gear 118,. flxed on the shaft and meshing with the'gear 8, of the train. This lever I i 4 is arranged so it may be held away from the, cam, by a lock arm II 9, and is also pivoted on the frame at 120. One,part of the arm, as It 1, when 4g the arm is in one position thereof, will engage the arm I 1 3, and hold the tooth I 1 2 out of engagement with the teeth of the disc 36, and the lever If 4 fr--e of the cam,. and thereby the friction drives the roller 21- continuously, and wheii Do @the lock arm I I 9 is shifted, to the dotted position, the cam is engaged by the lever II 4, the cam of suitable shape, at the proper time, will bring the tooth I f 2 to engage the teeth of the disc, 36, and hold the roller 27 from iurther.rotation, till the copy she6t has been Inserted into the bite of the feed rollers, when the cam vall'release the engaging teeth and feed the copy to the druiri stop 22". , An automatic copy-sheet feeding means is provided, to fe6d and, separate the coples for oo single sheets, from the top of a pile oi blanks to the feed rollers In a manner to reach the feed rollers at a predetermined time. In case the drum is being operated intermittently,, this should be as soon, or about the time the drum comes 05 to rest, during which time the feed rollers will propel the she ' ets to the stbp 2211 of the drum, preferably just a fraction of time before the drum again starts to rotate, to be sure that the front end of each sheet contacts with the stop to assure TO perfect reauter of the aheets. This is ae.complished by the proper shape and timing of a cam, adapted to control the lifting and descending movement given a constantly rotating feed %vheel. When the drum is being continuously driven, the To feed wheel may be adjusted to@ feed the sheet 125, is mounted on a stud 126, carried by one arm, as 127, of a rocking frame 128,.preferably formed of material bent to pr6vide F, U-shaped poition 129, and at its other end an arm 130 between which the frame is supportei%, to rock In bores 1301, on the outer endg of bearings .131 secured to brackets i32 fixed to the bar i CS, of the table 95. The free end of the arm i3D of.the framl128 is again bent, as at 133, to reach outward to 10 the. side of the frame 2, where it is eligaged by an upright bar i,34, the top of which engages a. pin 135 at the end of the'arm 133, to rock the frame to lift and lower the feed wheel, the bar. 134 being attuated by a. cam@ lever@ 136, connected 15 by a pivgt 137, to the lower end of the bar (see Fig. 3), the upper end being guided to slide in a capped bearing 1341 and tontro.Ued in its movements by a,cam 138, fixed on the shaft 117. The cam, of suitable shape, may be adjusted to-lift 20 and lower the feed wheel in prop,6r timing to engage the uppermost sheet of the pile of bldnks, and propel the same to the feed rollers. The feed wheel 125 is continuous.ly driven-, as here shown, by a cha.in drive (best seen in Figs. 1 and 3), the 25 chain 140, driven by. a sprocket. wheel 141 rotatably mounted on a stud 142, on the inner side of the frame 2, wwch sprocket has.attached there.@ to a gear i43 and driven by a gpar 144 fix6d to the shaft II 7, to drive the chain in the direction 30 indicated bythearrow. The6liaindrives-asmall sprocket 145,fixed to a sleeve i46, that revolves -on a stud 147, secured. to the side frame 2. The sleeve is slotted at the front end, as at 148, to make a couphng connection with a shaft 149, that is rotatably, supported in the bearings of the bracket 132 on which the frame .128 rocks, and the shaft at its outer end'has a small sprocket 150, which drives a shor t chain 15 1, over a sprocket 152 attached to the end of the feed wheel 40 125'p by which the same is driven. The feed wheel as h6re mounted on the rock frame may be swung upward to an upright position to be out of the - feeding position and clear of the entrance of the sheets, over the apron IC 1, and under guide mem- 45 bers 101', when feeding the sheets by hand. From the foregoing it will be understood, thz@t when the machine is fed automatically, the @she ets are fed to the feed rollers. from the top of the pile of blanks, that are elevated by thia springs 106 50 to have the uppermost sheet of the pile in position to ride over the rounded edge of ihe. apron I 0 1 of the te@ble 95, and here separated, preventing the sheets under the top sheet, by contacting with the rubber facing I 00', from moving forward with 55 the uppermost sheet. The machin6 by this arrangern ent is quickly set to feed by hand, by simply lifting the feed wheel to an upright position, as stated, shifting the arm II 9. to the dotted line position, so the cam lever 114 will iengiage ihe 60 cam i 16, and thereby the tooth II 2 of the lever will engage the teeth I I I of the disc 36, to stop the feed rollers for'the interval of time required to insert a sheet into the bite of:the rollers, which will then rotate again, in proper timed relation to (;,5 feed the sheets to t.he drum stop. . It is found in practice particularly important in the making of high grade copies, that the rollers used for proper and uniform impressions with one another, as Is required in this class of work, 7o be constructed of suitable material, and yet be produced at a low and conipetitive cost. The roller 19 is of rubber, of suitable riesiliency to quickly respond to the different adjustmerits jiven this roher. The rolldr 27, as usuauy constructed of

porcelain Is expensive, since It must be carefully mounted on a shaft, the porcelain of tube formation is generally carried on a shaft, surrounded by a cement filling to prevent breakage of the tube, also requiringcareful grinding 6,nd polishing, making, an expensive roller to produce. As here shown, the roller 27 is pfeferably constructed by mounting a tube of suitabl6 material adapted to withstand the moistening material used in this 10 type of machine, with whi6h this roller is constantly saturated; one form thereof I have successfully employed, as shown in Fig. 11, consists of a gteel tube, having hubs 27a, forced in the ends thereof, bdred to receive the shaft 31, which 15 is held by a binding screw 27c, for quick removal, wlien desired, from the container, when the container is in the machine, from the side thereof. The tube 27 is highly polished and plated, which prevents corrosion, and i)rovides for free spread20 ing oi the moistening fluid theieon. Another form of tube successfully used and mounted In the same manner just stated, consists of a molded product known as Mearta, in the electric trade, having all the qualities required for proper dis25 tribution of this moistening liquid herein em@ployed. The roller 271,, that conta-lts with the roller 27, is usually made of felt, Indicated by stippling, as best seen in Figs. 3 and 4, and mAY be made of sponge rubber. In either form, the 30 material is formed into washers and applied on the shaft to'su@port the same, packed, on the shaft to provide firmness and proper resflience. and held In such position by a nut azid washer at each end of the shaft, the surface is ground to 35 be true, to co-act with the roller 27, to iield and ride thereon, to conform to any sught variations between the two rohers, and press the copy sheets under regulated pressuie thereto for even distribution of the moisture to the underside of the copies, which results in perfect coptes taken from the master. - The roller 28, for regulating the moisture, may also be of felt, or rubber simflar to the roller 27', but preferably of a more resilient quality, for close regulation thereof with the roU45 er 27, and somewhat more absorbing than the roller 271, since as stated when the rober 27 comes to rest, as wjaich tizne the reher 27 is In position to recdive a copy sheet, the roher 28 also stops, and af this time any moistening material that Is on the iollers runs back, and lodges between the 50 two rollers during the stopped position thereof, and this accumulation, whfle It may be slight, wili, when the rohers are again started to rotate, b brought up and transmit a heavier coating'at "L putioular portion of the rober to the copy t sheet, and a heavy imprint at this place on the copy sheet would be made, but this trouble Is enUrely obviated by thi absorbing quality of the roller. 60 In lftg. 12, a modifleation Is shown of the means for supplying the liquid from the suPPIY In the container to the underside of the roher 27, and may be regarded as the preferred form of this means, over that of the pumping action into the basin In which the rouer 27 revolves, as heretoby omitting the basin, the mechanism Is much simplined. An endless belt 153, preferably of rubber, is-smpended to the bottom of the con70 tainer, and driven by the roller 27, by a contact rouer 154, over which the bOt travels and held @in close engagement with the iouer 27. the roller 154 is supported on Joumal ends In bearing 'poekets of spring hangers 155, located at each end of -the rouer, the hmgers flxed to the rear wall of the container, and are of proper tension to hold the roher and the belt to engage the roller 27, to be frictionauy driven theteby. The roller 154 is not directly under the rouer 27, but preferably as shown somewhat forward thereof, 5 and -as close to the regulating roller 28, without touching the same, this position thereof permits of rotating the roller 27 in the r.everse direction, which is often done by turning the crank h=dle In the wrong direction. When this is done, it is 10, found that the roller and belt do not revolve and no liquid is carried up from the supply. When the belt is driven in the proper direction, as shown by arrows, a heavy :ftlm of liquid is constantly applied, to the bottom of the roller 27, 15 in excess of the amount required, but T provide for regulation thereof by the roller 28,.between the predetermined limit points, as hereinbefore stated. In Fig. 13, I show a modification in the gear 20 train, to provide for dontinuous rotation of the drum, and the feed and moistening rollers 27 and 271. Whil6 it is th6 usual practice In copying machines to drive the drum Intermittently, with my iinproved stop face 22' of the drum, -iorined 2r> by thecutout 22, for the master cleunping bar to swing in, I am able to provide for proper register of the copy sheets with the master while the drum is in rotation, by so timing the lowering movement of the feed wheel 125, to niove and feed 30 the sheets forward to the moistening and@feed rollers, which robers continue the feeding of the sheets to the druin I .,while the feed wheel 125 at at this time is el6'Oated and ready to repebt the next feed operatiori, during which time the for- 35' ward end of the sheet belng fed Is moved against the stop. A slight variation in the feeding of sheets is likely to occur, this, however, is taken care of here, by the cutout portion 22 of the drum, being quite wide, the sheet is so timed to 4o enter the cut, as the same revolves to the position, as here shown, to open a passage under the roller I 9 to guide the end of the sheet therein, and this may take pla@ce any time during the time the opening is thus passing under the roller 4,5 19, anowing of a difference, of about three sixteenths of an inch, variation of the front ends of the sheets to engage the stop, this difference is taken up as the drum advances, otherwise in some cases that portion of the sheet would be 50 drawn tight between the feed rous and'the drum, and in other cases the sheet would be loose and a loop would formi as indicated at L. The gear 6 of the traln, driven by the hand crank handle, meshes with the gear 8, as an intermediate gear , 55 to drive the gear 10a to rotate the drum, for cont-inuous movement, by thus airanging the gear train, the cam shaft I IS, as shown in Fig. 4, Is placed between the drum and the container 25,@ indicated at I 18@ to be clear of the drum, and on 60 this shaft the gear 8 Is mounted, instead of the stud, as heretofore,;-to provide this ;Position of the shaft, and Is driven by the gear 8, on which the cam 138 to lift and Idwer the feed wheel is mounted-md-by-sllghtYy iiiiitangedposition of 65 feed wheel. mg. 14, also a modiftcation, shows the same general arrangement of the gear train, as just described with respect to Ai. 13, to rotate the 70 drum continuoudy. Here, however, the machine Is "miauy adapteufor hand feeding andthe fri;ton drive P, of the feed--roUers27.and 2 , 71 Is employed to momentar.Uy stop the feed roners, to provide time to lnwxt the copy sheet to be fed -Ig fore described. Here, instead of the pumpi and- --t'he connections. and. the chain 140 to drive the 2,185,682