and port 21 into oi-ie end of the piston chamber, thus building tip sufficieiat pressure to move the pisto,-i @-8 to tl-ie left. As soon as the licad 7 of the piston covers the exlialist r-, p,,issao-e-,vi3T 26, the air tl-iat hts been finding i-ts wav throu(yla the ports 25 of the. right hai-id valve head 23 -will be stoppcd and pressiire iiill'bu-ild - Lip iii the ri(,Yht h,,tnd end of the i-alve cliamber, tliereby moviiig the in to tli.e let-t or to @he pos'ltioii illi-istrated in ri i-l-itre 2. 117hen this occui-s the left 1-iand ,ur(ove 19 is in commtinication ivith the intal;@e IS Phcl live @i;;Ii- iiill flow thro-Ligh the left li.and p@issayeway 20 aT)d left han(-l poi@-t I r) 21 into the I-,ft hand encl of the pistol-i char,-iber, tlierel)3, ope@-,,ttiiig aga;nst the liead 8 to drive the pis@toi-i to the i-i(ylit. Dtirin(r this moi,-eme--tit the rio-ht hand exhaust por@t 11), of the cylliader i,@iembei- is upcovered to 20 poi-mit the exhalist fi-oin the ri(yht li!and encl o-f the piston chLmbe,2. As the piston moves to the ri--lit it iN,ill ao,ain ieach the positioii illustu,itecl in Figtire 1, Lincovei-ino- both the exhaiist ports 26 .incl i-elioi,iiao- the presstii-e at the right hand end of tlle -\7alve 22. The le--,'t laand pILinger 27, which has been foi@ced i-ear-war(-Ily, as shoivn in Figure 2, will now ieaet a-nd n-iove the valve to the cei-iti-,,t'i positioia, oiut-itil it is stopped by stril-,in.7 the i-iglit liftncl plunuer 27. The valve wiii iiokv be lield in its ce-.itral i,)osition ivith live air cut oiT 'Lrom b6tl-i eii'cls of the piston cliar.,iber. and consequently the p'ston will contir@iie the in.@ermediate or final movemeiat to the right. due to tl-ie expansion of the iiiotive fluicl held in the left haiid end of the pistoii chamber 6. As the piston approacl-ies the riclit 1-iaricl limil.- of -its sti-oke. the left liaiid exli,-,tist port 12 will be iincovei-ed and tl-ic left hanCL exhaust passa(yeiva37 26 iroiii the i-a]N,-e chambei@ i-7ill be covered by the liead S. Tho valve will tlierefore i-everse its actioii or riiove to the position slionvn in F-l',erui-e 3, ii,heielipoia live air ivill be initialf)7 aclmil@- ted to the right haiid end of the pistoil cliliii-iber 6 --ncl tl-ie pistoi-i @vill iioni, be drivei-i to 'Llic left -Liiidei, Iii-e aii, iintil. both exhitist passa'e)vays 26 ai-e agaiia uncovered, wbereiipon the Nqlve -w,"Il be -,ititomatically centei@ecl aiid uiatil the evele ofoperations above set foi-th a--@ain beo-ilIS. A sligli@ly mocfified -Loi-n-i of coiistruction is illustrateo, in FT'o"Lire 4. The cylinder ITICI.Mber is designated 5a and the piston ch-,im5@' ber 6,1 'cl-iei,ein contain@-,, ,t recipi@oeitory piston composed of si-)acecl heacls 711 and 81 with a rediicecl portion 9a betiveen tl-iem. The poi-ts lla and 11?@-I ai-e the same as those (lescribed. Ir, J'a 60 @-Ie valve ebest is clesio-i-iatecl '@) and l@, pi@o@- iO,ecl ivitli ,), N,aiie cha@ib(,r 14- in v,,Iiicli ope,rates a vtli,-e, - 92',, hai,ing all the feati-ii-es of tl-ie F@r-t clescribecl i-,,ilve. Ii-i this striietui-e the plii(rs 15a insteacl of being thretded into the encls of t]-ic bore foi-m'ng@ the v,).Ive chamber, ai-e slid:).bly fitted tl-ierein and are 1,643,560 held by a tie bolt 16a that pa-qses through the valve 22a and has -Lipon it ttiblilar pltiiio-ers 27-1. Aside frona this i-iaodificati.on the structure is the same and its operation correspoiids in ill respects t'o- thqt of the 70 etevice above described. That is to say, a ceiiti@al intake lSa is employed with the spaced grooves Iga con-imunicating WiLl-I the opposite ends of the piston chamber 6@l through passageways 20a and pol@ts 21a. 75 The pILirigers 27a are moved in@vardly by motive fluid supplied to tbeii- oliter ep-dc throtioh passa-ewiys 30a and the heacls oll the valve 22a are provided @vith supply ports 25-@. Exl-iatist passageways 26-1 lead froiai 80 'Llie oncls of the valve chambei- 14a to the cei-itral portion of the piston chaniber 6,1 ancl are coi-itiolled by tl-ie piston heads From the foregoino, it is thouo-ht that the construction, oper tion and m,-,ny ad85 itantiges of the 1-ierein described invention will be apparent to those slillled in the al@t witl-iout further clescription, aiad it will be uiiderstood that varlous chaiiges in the size, shape, pi-oportion and minor details of constrliction may be i-esorted to without cleparting from the spirit or sacrificing any of the advant,,tges of the inventi.oii. lltving tli-Lis fully described my invent,on, ivbat. I claim as new, aiid desire to secure by Lettei-s Patent, is.- 1. The combination -with a cylin(-Ier iiieiiiber liai,ing ,t pisto n cbamber a,,ad a pistoli operatii-ig in the pisto-.i chamber. of means for siipplyino, actliatirig fliiid to tl-ie pistuia '0( chaiilbei- oii @pposite sicles of the pistoll, a distributing valve controlling sai.d SUPPIIT ancl movable bet-ween opposite extrerne positions and an intermecliate position iii wl-ileli 1,,Ltter position it c-Lits off fluid simultaneolisly to both sides of t,he pist6ii, aiid ii-ieins for ati.tomatie' Lll.)7 slliftina the val@,e between an(I tej,-ipor,,trily holdin(y it in its extreiiie I)OSItions ind iii said ii@termediate position.' 2. The coliabinatio-@i Niitli t eylii-idei- - ii-iejiiber and a piston r,,iovtble tbei-ein, of iiieai@s for supplying actiiatin-- fluid to the eylincletnieiaiber on opposite @@cles of the piston, ,t clisti-;-biiting vali,e, means for Ltitomatieg.1117 opei-@tti.iag the valve to permit the Dassa(Ye o f actuiting fliiid alternatelv to op-p@site, -sicles of the piston as the sam@ reaclaes the of its respeet@ive strol@@es, ancl mei,ns coiitrolled by tlae pistoii to automatically move tlie, valite to and temporarilv liol.d it iii a both si(les of the piston diirino- tlie, iriov(,,jileilt o-f 'LIie Tal-te-@- tlii-olicyll tlle incel@illediat(, poi-- tions of its strokes. 11-15 3. The combiiaatioq ivith ,t cylin(leiber ancl t pistoii altern@itely operttip,,g ill opposite directions therein, of n-iellns fo,, siil)plyin- motii,e fliiicl 'tO tli I e e-vl.incler meinbeion opposite, ends of tl-ie p;ston,, an aiito- 130 iiiatic clistributirig valve movable in opposite position to etit off the fl-c@id fi,oiii
;li643,560 ciirectior,s alid allo-%,vin@ motive fluid to pass the piston and ,ilternately to t@lie ep-ds 0 @l, correspondin,yly ancl si-,@-nultaneously etitting t@ o-IT the inotive fltiid,to the opposite encls, ana -iiat;ic Ily inovi tlie val @,e means foi- autoi li -D(y Lo ancl teii-ipoi-aril.3, holding it -n a positioia 4, - -i,)@L Ll.-) ut off -n ive fluid froi -n both encls of the laiston dtiriiig the strokes o--v saici piston. 4. The coiilbinati-on ivith a, cylindei@ meiii1 t) ber anci a piston -,Iterpa'L-,ely oper,,ttiro, in OPI)osite cli -rectioiis thereiii, of nieans for iiiotive fluid to the cylinder inember on c-,ie of the pistoi@.to effect- it-s ivoi,li@ing stroli:e, an aittorii@ttic clistribLit-in,,,r, i,3 valve c@,-iitrolli-i-ig s-@tid iuotii-e filiid supply, iiaeaiis foi- auto,-iititic,,LUy shift.incy the vali,e to deliver i--notive flu.,id to tlie piston and to in3 ' tiate its iyorliing @ti-ol@e, -,tnd in6lLris f,-)iatitoi-iiatica,lly inoving ',- ,he ITilve to ancl temo porai-ilv lioldin- it in ,t positic,,-i to clit off tl-ie itiotive flu.id from the piston dlirino, tlii@ 'ip,te portior. of the@ Ni inte,@-inect Torkino, sVrolKe ,iii(:' iiaintain the work-Ing stroke under expansion of the i-notive fluid. 25 5. '@Pl-,e cowbinac@ion iy, itli: t cylinde'i-: n-iember and ,t p'stoni iltei-nately I inoiing in ?pposit-, directilons tlierein, of means irelticling tivo passagewa s leadincy t,) the eliiiicle o-ii opposite ends of t-lie piston fo" delivering 30 motive fl,,@icl thereto, an @autbn-tatic distribit'L,ing valve n-iovable io altemate positions to opeii tlac-, p-,Lss,,igeivays a@itern@,tely ar-d to a third positioii to close both passageiiays, anci ineans for attomatically moving the 35 v,,-,J.ve to said alternate positiods and to@ said tl-iii-d position betweeii :the alternate posit.loris and f-or tei-npoi--,trily holdin(y it ir, said tliii,(,l position d,,iring a material pbrtion ol tlio sjro.-,e of the piston. 40 6. The coi-nbination ivith -,t, cilinder membe-o arel t piston altei-n-,itely moving in opposite direct;oiis tl-ierein, of means includill,, tlyo 1)assagewavs leading to the cylinder ii-lel@IIL,ei- op- ol)p(:>siie ends of the 1,)iston for 43 ei-in(,,@ iii-)t've fliiid tliereto an alitomatic clistribii'uii-ig v,@ilve iiiovable to alte,-nate posit iol-is to open the passki),,eways alternatelv and to a thil-d position to close both passage'ivavs, aiid means controlled by tl-ie pistoii for 50 iil@,oiiiati-c,,illy moving the valve to said -,tlternate posit--,oDs @,,nd to said third position bet-@.N7een the altet-iiate positions and for temI)oi@ari.lv holclii),, it in said third position cli-irl,.ig a iiiateriLLI poi-tion of tlip@ stroke of 55 the piston. 7. The coi-nbiiil-ition i-vith a cylinder mere[L,er aiid t, 1)iston d.Itei-,-iately movinoin opposite directioiis tliei-ein, of means incluclino- t-kyo passa(,,eiva,)Ts le,,tclinQ:; to tlie, cyli,,lder (io i,@ie-iaiber on opposite, ends of tl-ie piston for @,eliver-ing ii-iotive fl-Lild tl-iereto a-,i Lutomatic clistri.buting vallte movable to alternate positioiis to ol)en the passageways alternately aiid to a tliird position to close, both pass,,tgeways, flliid actuated ineans conit-rolled by the 65 piston fo r deliverin@, motive fluid to ancl exhauertin,- it from !he valve to shift thd vaINe tc, siid alternate positions, ,iiid fltild actuated niemns, controlled b- the piston to hift the tei-.i@orarily liold 't 70 ,3 valve to and 1 in, said third position during a matei,'al portioii of the scroke of tlie piston. S. The combination -witl-i a cylinder iiieiiibei-, and a pistoii tlierein, of a, i,alve clialliber liaving an.i nternie,-Iiate intoke ancl out@lets on opposite sicles of the intake leacling to the cylincler n,,ember oii opposite ends of the pistoji -,t distributina:, valve in the val-,Te el-iamber iiiovable to alternate posit-ions to altern@:ttely : open said . otitlets to the ii-itilie, exbaust pitssaoeways fi-oin tl-ie. ends of the vtlve@chamber controlled by the pi-ston, and iiieans for iyiovino@, and ten-iporarily lioldii@g the valve iii a@ positioii over@ both outlets cl-Lirino- the i.nterinecli,,tte port@ion of the piston s, stroke. 9. The col-nbination wit-,@ ,t cyliiider iiierii@ber and a piston therein ' of a valve chaiiiber liavi-Tig an intermediqte int,,ike aiid oiitlets sides of the ir,,tal@e I.eadiiig t on opposite p the 00 cylinder mernber on opposite ends oi tl-ie pistoji, :,.- clistributin valve in the vall7e cliai-aber 1110ITable to alternate posit-Lons to alternat,--ly ope,-. said outlets to the i.litaii:e, exiiaust passa,(,,e-vvays from the ends of the itilve chamber controlled by the pistoii, pltiii@-,ers opei!ating agaij--ist opposite encis of the. valves, and .-iiotive fluid 6perating on tlle plutii(yers to move and tempol-ar'Lly liold the v,,tlve in a position over both outlets di-ii,iny 100 the intermediate port-ion of the pi-stor,,s strol@:e. 10. The combinatioii -with a cylli-ider membe,.- and a piston therein of a valve chimber 1 105 hztvin- an intern-iediate intake a-.id olitlets on opposite sides of the intake leading to the cylinder member on opposite ends of the pistoil, a cl'stributing, valve in the valve cham-is to alternlately open said outlets to the in a @:e, exlialist passageivays fi-oiii the ends oL the valve, chamber alteriiate-ly covered ancl uiicovered by the pistoii and simnltaneo-Li . sly unecvered. thereby, and means for moving - ai-id temporai-ily liolding the valve in a posi- 115 tion over both outlets dur;@ng the intei-rriediate portion of the piston's strol@:e. 11 ' The combination with a cylinder men-lber aiicl a piston therein; of a valve chainber hav.inly an intermediate intal,--e and O-Litlets 120 Ol'i oppos'te si-des of the intalce leadin to the cylindei@ member on opposite encls of the pis'Lon, a, distributiilg vali,-e in thE@ vllve chamber mol,able to altem@tte posit,ions to 125 alter-nateiv open said otitlets to t@he intake, means for supplying motive fluid to the ends of the valve chamber, exhaust passageNvays from the ends of the valve chamber, ber movable to alternate positioi . @ I , !IU
alternately coverecl -,tiicl Lincoverecl by the piston ancl simultaneously uncovered there'by, pli-ingers that operate a gainst the ends of the vaINTes, and means f-or slipplying motia,e fluid against said plungers simultaneously to catise them to liold the valve tempor,irily ove,@- both outlets during an iiitermediate portion of the piston's stroke. 12. The coinbination Avith a cylinder memlo ber aiicl a reciprocatory piston tlierein, of a valvo chamber having an intermediate motive fltiid int,,ilke an,-l opposite oiitlets leacling 'Llo the c,,iicls of the cylincler member, a @eciprocatory valve in the valve chamber, 15 meaiis foi- permitting the presence of motive flliid in the ends of tha v,,ulve chamber simultaneously, exh.Lust passagenvays le,,tdin- from the eiids of the valve chamber to the cylinder i-iiember, oppositelydisposed 20 pluiigers operatin- in the val.ve, and means for siipplyiiio, motive fl-Liid to tl-ie pluno.ers, sai.d cylinder member haviny an exhaust i)ort betnveeii its ends, aiid saicl piston haviiig -,in intermediate red-Liced portion that 2.5 aff-ords comiiiunication bet-\ieen '.he exhaust passage,ways of the valve chamber and the exhaiist ports anct formiiig spaced he,,tds that co@.itrol said pas@;ao-eways and port, a--Qcl servi-i,,o- to move the valve betNAeen 'ts eiid posi30 tions in tl-ie valve chan-iber, and an iiitermecliate position iiherein :'Lt cuts off- motive f-luid tlirotio p ,@1) both outlets ancl tem orarily holdiiig it iii said intermediate position. 13. The combination with -,L cylinder mem35 h,,ii,ing a pistoia chamber and a p'ls'L-on op(@r,,ting in the piston chainber, of means for ,gtipplylii,- act-Li,,tting fluid to the piston cliaraI)er on opposite sicles of the pistoia, a clistribtitiii,g v,,tlve coi-itrolliiig s,,tid s-Lipply ,Liid mov-40 able between opposite ext-ieme positions and . ,i-mcd'ate position in Nvhich latter position it clits off fluid simultineo-Lisly to both sides of tiie piston, opposite reciprocatory pluii(yers mouiited independently of the 45 valv'e@'and bearli-ig against the opposite ends tl-lereof7means f@oi@ co-tistaiitly and yieldingly urgi-ng the plungers inivardly and causing b,)tli to bear agaiiist the valve ivhen it is in its interiiiecliate position. and me,,tns for 50 limiting the ilinvard movements of soid plungers to cause each to be alternately separated from the valve -when the valve moves to its extreme positions. 14. The combinqtion with a cylinder mem55 ber having a piston chan-iber alid a piston opoi-atl-ng iii the piston cli-,imber, of rheans foi- supplyiii(y actuak@itig- fluicl to the piston chamb(.,r on opposite si.des of the piston, ,t distr'biiting valve controlliiig said supply 1 60 and mov,,ible bet-",een opposite extreiiie positiol'is tnd an intermediate position in 1)643,560 -which latter po@ition it etits off fluid sim.ultaneousl@ to both sides of the piston, oppo@ site reciprocatory pl tecl iiicleuiigers iiioi-iii @penclently of the valve and bearinu a ainst o5 n 9 the opposite ends tllereof, means for const,,tntly tirgiiig the plungers in-w,%rdly and caiising both to bear ag-ainst the valve ivhen it is in its intermediate position, heads on the outer ends of the pltingers ancl stops 70 ag,,tinst, which the heacls respectively abut for limitillig the in-ward movements of slid pluiigers -,tiid calisinu each to be alternately separated from the vculve Nvhen the valve inoves to its extreme positions. 75 15. The combin,,ition iiith ,i eyliiider member and a piston operating therein, of a distrib-Liting valve for controlling tl@e motive fluid to the cylinder member to operate the piston, a valve chimber contaiilillg the 50 valve, means for constantly supplying motive fluid simultaneolisly to the valve chamber and against opposing portions of the valve, exhaust passages for slich fluid from the valve chamber to the cyli--Lider member, 85 said piston having means for altern,,Itely closiii-a one ancl opening the other of the exhaiist passages at e-,tch end of its stroke and openiiig both passages simultaneously IL t the i-.itermecli,,Lte portions of its stroke, 90 and oppositely actino- yieldiiig plun-ers that operate on the valv@ to hold it in @n intermediate position and with fluid eut olT tb.ereby from the ends of the cylinder member -wheii the exhaust passages are SiMul- 95 tatieotisly open. 16. The combination with a cylinder member and a piston operating tl-ierein, of a distributing valve for controlling the motive, fluid to the cylinder member to operate the loo piston, a valve chamber containiiig the valve, means for supplying motive fluid simultaneously to botl-i ends of the valve chamber and against opposing faces of the @alve, exhaust passages from tl-ie ends of 105 the valve chamber opening into the central portion of the cylinder member at spaced points and alternately Lincovered by the encls of the piston during its rec proeation, said cylinder member having exh 'Just per- 110 mitting ineans that is open to the alternately uncovered passao,es ancl sti-d 1)iston having a groove that sim-Liltaneously uncovers botli of said. passages and opens them to the exhaust-perinittin- means, ancl oppo- 11.5 s'lteli, acting yielding pl'ungel-s th-,Lt operate oii the valve to hold it in in intermediate positioil and with fliiid cut off thereby from ihe ends of tl-ie cylinder members when the exhaust Passaues are simu.Itaneously open. 120 In testimon@whei,eof, I affix mv @ionature. AUGTJST H. KATTERJ'OHN.
