1,417,169 While I ha-ye clescribed the iiivention with referen(,e to a particular mech-,inism, it is jiot lii-nited to the deta-'Lls sho-",i-i, but may be moclified ivitholit departiiic, fi-om the fiindalll(,,ntal ptii@poses set forth, and as defined in the followiiig cl,,tims. (!Illm: ch,,ick ,oi-iprisin(,7: ,i, (,ollet, a rotil'y ,t;etii,,itlia(,y irienibep coopei-,,itijig Avitli the coli'D iet, aiict opei-atii-i(v meaiis ei,-)ntrollin(- said r(ieml@ei- @tiid iiicludiiig @ll, oscilla,- tory 1- iaiiii i@'lieel sttrrotiji(lijig the (.,I-iuck and bavii,i g aii alterii-,tting (yl,ip i,elea,96 en(?,a@ @eiiiei-it@ v@,itli said acti-i@itino, nieiiiber. ]5 A cli@,ick comprisil-l.- -,, liousing, a colletsli(.I.a'l)ly arr,,tiiged iii tl-io liottsing ,tnd lie!O, agai,,ist rotatioii, a rottry aefliating iiaciiiber coopoi-at-iiig -,i,ith tlia collet for slidliag it back ,ind fortli, ,Lnd oper,,tting @o ii-ieaiis T-or the actuiting mei-.aber including an oscillatory h,@ilicl iiheel surroundiiig the ch,,i@ elc tiicl I;aiiiio- ,iii ,Llternating grip ,tnd ileleas e orgageii-ieit iylth s,-Lid ',tetuating meml) er. 211) 3. A. e'liiick coiTiprisiDg @L collet, t rot,,try a,tti,qtii-i- mej:ii.ber coot)eratino- i,,Tith the collet, Liicl opera'uincr ineciiis surrounding the cliu,ck ai,,CL ,tcting. Avlien oscill',Itecl, to c,,tuse i,otarv mba-eme@t of the ,tctLiatin(y member '@Tirection. n ,10 III oie 4. ik. chuck comprising ',I, collet, ,t rotary ale@uvtiiimeiiIJ)er cooper,,tting - with the col].et, ,i-qcl operatino, me,,ins miirrolincling the chuck aricl acting, )ihen oscilltted, to c,,t-Lise 35 a rotatioi-i oT tl-ie act-Liiting member in one clirection. the opei@,,ttino- meaiis ine uding mani,ially tdjusiible cl'evice which is positioiitble to cletermiiie the clii-ection of rotation of the actiiatiiig memt-)er. 5. A clitieli comprising ,t hotislii,-, a, c(l- 40 let gl'dal)le 'ii [lie hoijsiii-, a, i@otary actiiati@ll,,y nieiiiber cooper,,iting with the collet aiid I)rovicled -",ith ,i sei,ies of teetli, aiid oscilli,- toi @l, opoi,@itino@ ii-ieans incliidiii- -,i revei!,,@il)le (lo(, coopet-atiti(,- iiitli said teeth so (is to 45 - ,,o,ve the "tiiatin(y member iii either direetion. 6. A con-iprising a, hotisiij(,,, i collot slidable in the lioi@isiji(,, a rotai,.), a;cttiating illemb(,,r cooperttii-ig witli the collet ni-i(I 50 ])i@ ovide(i Avith a series of teeth, oseill,,ttory opoi ,ating iiieans iiieliiclin- a reiei.,sible clog coo peratintr witli s',Iid teetla so as to i-nove the actuating mell-il)er ii-i eitlier direction, and frictional locli:in(y meii-is for holding 55 the dog in adjlisted p@sition. 7. A clalieli:' coinprising a lioiising,, a collet sli(lable -within the housing, t rotary actti ating member cooperi'tiiig with the colJnOl let an(I li<LIT' " et series of teeth thereon, 60 oscill,,ttorv operating meads inelliding ,t pair of plates" locited on opposite sides of the afoi-ementionecl teeth, a, mtnu,@illy reversible dog jolirnaled bet-ween s,,tid I-)Iates so ,is to cooperate with s,,tid teeth in opposite posi- 65 tions for moi7ing the aettiating inember in on-, direction or the other, said pl,,Ltes 1-iaving extensions arranged adj,,teent to on.e ,tnother at tl-ieir oiiter encls and a hancl -wheel conneeteci to saicl outer ends of the plates for 70 rigniplilating the operating me,,tns. In ",itness whereof , I have hereunto - sioiied my n,,ime. JOHN W. HEIGH.

UNITED 3 . TATTS PATENT OFFR@CE. JOHN -W. HEIGH, OF ROCHESTER, !\T-T,!-',V YOR!3:. CHUCIK FOR LAT--RIES AND THF, LIICE. TO (tll ?,@t CO?2067@9@,,- Be it kiioivn tlii:i 1, JoiiN W. 1-TEiGTT, a, 11 e cl@'ui.zen of the TT it cl States of Ainerica, ilesi(-Iing at -PAocliester, i.ii tb-c cotinty of Moni,oe and S'u@tte of Nlew 'LorIK:, ha,7e in-%,ented cei,taill ile)v tilid usefitl improvements in CilLi(,ks -l'or Lathes ,iii(t -,',he like, of ",hich the fol!oavin(y is a specification. @ialy ini,elifioii relates to chuck-s for lathes 10 and the li-ke, ahd hgs for its object to rop vicle b -@,-ol-@k holciiig chuck o-L' the type P,-dapi'ed to be deIL-acliably motintecl on the e,icl of a sj)indle. -iiore p, A @ trtieLilar obje,-@t of 't-,he invention 15 is to a!Torcl a simple and practic@il mechai-ii.sm, of slich character that 'Ll:te operator can readily position oi- rernove a piece of t.'tie ivorl@ beiiio- 1-ielcl ti@yhtl3r and ri-iclly, y tlle collet. 2o An -,dcliLioi-.al objec' of the improvement is t,-) I-iiilce it I)ossible for the ol)erator to @it-L-9ch a piece 'of iiork qtiicl@ly ,tnd conve.niei-@tly, thi-o-Ligli opei@ating iiieans that is in inli)iecliate proxiiiiity to the point -where 2,5 Cl,.e iiork 's lielcl. The ii-ive tioil is also iiitended to accomplish cert,,,iin other pLirposes, ,tnd ineltides various iiii,)roi,emeii[s, as will be@ fully tinderstood froin 'u'lie follo",ing description ', 30 coiisicle,-oct i-,,i coiijuiiction -%vith the accomi)an.3Tiiig driN,@in(rs iyl-iile the n'ovel fe,,ttures of iny initentioii ,ire pointed out in the claii-ii@ folloii@in- the clescription. In the dr,,t-NNings: 35 Fi@,,tire 1. is an elev@ition of fli3 ivorl@ holcl(-n@t of i, cliucl,@, constrticte(I iii ace(-)rdY@7ith a pi,efei-red einboclii-rielit of 'mv A7ent'oll, 1,LIICI l@litil I p@) tiol@l ol@ tl-io lioll@r Specification of Letters '@@ateiit. -Ila-'@leia.teicl Ala,y 23, 1922. Application filed 'Deceinber 16, 1920. Serial l@ro. 431,187. [lie opei-atiii,@,)- iiie(,Iiaiii,,3iii, t),i i,tl@, I-)roken aav@iy, aiid -witla parts reii-io,@,ecl to'illustrat(I 55 tle re@,ersible do,, positionect - [oi- t,io-lite.i-iill" "-ho collet. .1i'io,tire 8 is ,i si,iiillar -\,ieiv, L)arts ),)roli:en aAy,,ty, illiistritiiio, tlie i@eN,ei-sible do(- po sitioiied for loosenii1g):,tlle collet. 60 F igiii,e; 9 is ,i plaii of the - rei,ersiblo (lo g. F io-ure 1-0 is a cletail sectioi-ill vieiv on line 10- -10 of FigLiiT @, ond F igtire it is 11 sectional view on line 11- 6 5 11 of Figi-ire 4-. Ii i general, tile chuel-, of lily invention em boclies @t collet slidtble, in a liousin-, a,iid lia vino- coiinected tlierei-vitli ai-i actuatin(y - @Lneiiiber, preferlbly iii the Torin Of a COII',IR 70 i-ii threliclecl eiigp,(,emejit i-ith ti-io col'.et. By tur niiag the collar refei,i@ed to, the collet Is caii sed to slide one Nv,,iy or the other, aiicl its slic lable iaioveiiiei-it is rei,-ersed iihen 4uhe ti(@- tiitti ng collar is ttiriiecl in the reierse direc- 75 tio n. The actliitiiig meii-@ber or collar is coi -iti,ollecl b3, oscillitory operating mea.ns, iAI iicli prefcrably iiieliicles ,t @fi@a,ii-ie carrying % device T-oi- ejjgageiiient i-vitli the I,Ctuitin(Y col lai@- tDd ,,ctino@ ivl-ien adltiste(l, to n-iove 80 the eoll,,ir iii eitlier clii-ec"ioi of i.@ot,.ttion. Th is ma@, be brougl-it about by a pia-ote(i dog tliat . is i-ei,orsible so as to cool)er,,),te in either on e of tivo 1),)sitioi-is )iitl-t tegtli oi-i the ICttiat i!-ig collar, n,nd tl-io Tr-,trne cgi-rviijg tl)e 85 clo " is pi-efertl)ly proA7idecl ivitli L'i-n,,tnipit1,,i @ting b-,Ln,,l wlieel. Tb.e piirl)oses of. the inveiit-,ioii ciii I)c 40 2 is, @i sl(-[e of tl)e 1)0:1.tioii of tfle ll("l isill(T @t,(I,,tpted to be at'L-aclilecl to tlic@ 1)@irts ii-i Figtire 1. L ,1-@igiire 3 is i loi-i,,,,itiidin,,il se(.CioTial i7'LeAv (ri lii-ie 3-3 of I tn(I shoaviiig the 46 collet iii posilioii T-oi- cloi-aping tl-io Avorlr,. Figtire 4 is ,i longitudina,l see'@ionul vie-k@@on Iiiie 4-4 of Figtire 1, and sl)o-wiiig the ec@llet i@,i positioii, f6r releasiiiz the worlr,. FigLire 5 is an eiid elevation of the chuck, 60 lool6i@g at @he -v@,orl3: retaining end. Fi,tire 6 is an end eleiation of the cliLTeki lool6D-g at l@lie spindle en(yagi--Qg et-icl, Fi-gi-ire 7 is o,,p- enlqrged si-de eleiati-op- of ried ot@it III ways, g.,ii(I the meel-tanis-ni lierc,,iii (le,@,@cril)ed is to be@ iiii(loi,stood as go ilio i@el), olie of @. v@ll@ioiis eni - -inieiiis. T3i t-,Iio t, @l I)o cl "Iii (I 2 I)ai @11,11, (f @i, -WI@-icli li(@Icl b lioiisii - ), tl i L-e zi (I 1)1.iis i'), t'he ciitl,i-e tsseyriblv I)eiyig @icli )ted 95 I for suppoi-t oii the ciicl o II! t sl-)iii.(Ile ),)y o@f tlie tlirei(l.ecl -t)oi.- tioii 4 oii tlio liotisiii,@r seetio-n, 1. ITi or(,Iei., 'uo ,ifford aii gc@@urate fit betweeii sect',-)iis I aiicl 2, section 1 is provided xvith recesses 5,, -Iligtires I and 2, ioo :roriiiecl iii the sicles of extensions 6, aiid adapted to receive cooperating locl@iiig lugs or pins 7. 8 clesignates tl-ie collet arranged -within the housing and adaptecl for sliding inove- io5 ment, eiiher '-o the position shown i]R Figure,

1,417,169 for claml)ijig tlae work @),, or to tl-ie posii-ioil SI)OIVII in Fi(,tiro -I- 4@or the ,N-%Iork) '111(l I Avi.11 iio@y doser'l@)(@ the iiiecliiiiism by )Yhich tlils slidiiiiiio%-en-iciit of the collet is ae(,oji-iplishe(l. 9 clesio,-nates the collet tcttiatiiig meml)er pi-efc,rablAT consisting of a collai.@ Ayitli an iiitoi-ior tlir@,,,idecl poi.@tioi-i 10, eii(,-a,(,iiio-,i threaded end oi-i the co'llet, so thlt i@,lieii the actuio atlii(,, 9 is i-ot:itccl iii oiie dii-oction or the other, it prodiiees ,L cori-(,spondiiig slidingino-veiiieiit of the collet. The I-,ltter, when draa-vii iniiardl3r to; the position shoiin ii-i Figtire 3, is clamped aboiit 'L-he iaorlz-- by 15 i,e,,soii of the engageii-ieiit of I-)rojectioiis 11 i@,itli thc, ijiciij-ied seat 12, ancl ivhei-i the collet is iiioi-od oLitii,ai@-ctli, is ii-i Fio,tire 4, i.ts split n ei-io@s ai-c 'L'i,eecl @iiid tlio ivorl@ releas-ed. The aCtLIating meiiiber 9 is ad@tptect to be @o conti,ollecl by oscillator.)r operating me.Lils, providc,d ivith a manitally adjtistable (levice for fixii-i,c,, tlae direction of rotation of the actuatlii(,y jnerqber i-vhen the operatiiag j,,ieaiis is oscillated. To accomplisl-i this, the actu25 ating collar 9 is proi-iclecl a series of teeth 13, and the opei,atinp, meins incl-Lides frome compri.sinto; t pa'r of plates 14 alicl 1.5, iyhich it their ceiitral portions ,tre spaced from eacli other aiid local,-ecl on opposite so sicles of the teetli 13. 16 desi--i-i,,),tes a be,,,i-iiig or pin siipl)oi-ted be'iveen the pl,,ttes 14 and 15, ,ii -id pivoted on the I)in 16 is -,t manuallit i@ei,-ei,sible clei-ice, oi@ dog. TI)e 1,,itter ineltides two oper35 ,iting por'bions 17 ancl IS ai,r,@ingecl on opposite sides of the pii7otal poin'L, ,ind a manip-Lil,,tti-ng fino-or portion 20, A-vhich extends tilrollo,h ali openino- 21 iii the holisii-ig and is accessil)le 'j-rom the exterior in oi@clei, to 4o adjust the position of the doo-. AVIieii the dog is positioned as shoivn in 't, by 'lla'iii(y t]-ie opei-atin- n-ieans or fr,,tiiie osel u zr) 5 t]-ie collet is tightened, alicl upon reversii-ig ,tted in the I)osition of the dog, as illi-istr, 45 8, oscillation of the operatiny nieajis z@ soi-i,es to looscii the collet. Tho rei,ei.,sible dog cooperites iiitli the tootliecl actiiatiiia e@ coll@i@r 9 after the fashioii of ,t rateliet pa@vi, beiii@x draa@,ii oior the teeth (itii-iii@-r its ietiii.-ii 50 iiioiremciit, ,iiid liavin(,@ ivitli oiae oT the tectli diti,iiio -o ,; its -I' i-)var(i iiio@-eiiioiic, -i d s,,tittl)lo iiceliiiiisni is pi-ovi.ded l'ol- liol(li @ii 'Llic pa@@-I ii-i the selectect I)ositioii c.)f idjtist-neiit. 55 To tlii.9 eii(l, eteli operatiii(-@ I)ortioii of the do,,), is 1)rovi(tecl Avitli curved recesses or pockets 2@@ loc,,ite(I at its foti@i.- ed,--es, or iii other ivorcts, on both sides, (iiid botli iiiinai,d,)7 and oiitiiardly of the ol)ei-atin '.-@ I)oi,tioii, Go ,tiad the re(,esses oii each side are arr,,tnced in z@ ii@ixta-.iic,l,itioii to eacli othei., T-or a p-Lirpose ",ill appeai- preseiitll,. Att,ielied to the plates 14 ,tnd 15 are cups 23, cons'Lit,-ti-@@inp,, foi, balls 24. the C),D- latter bein- actua,'L-ed by si)rin-s 25 an4 coopertitiiig ii,it,li tl-ie reces.ses 22, as slion-vn inFi@,,Lii-e 1-0. By ctisposing tl-ie side recesses i-ii e a otl er, the balls 2-1- jllxta-relation to oil n -I siiap instaiatly from one recess into the other, and tlius assist iii the iii,,inlial operation of 70 chaii(@ii-i(- the position of the dog. It ivill be undei-stood that to adjus'b tlle dog froin one positioii to anotl-iei-, stificient pressure mus't, be applied to the fiiiger piece 20 to overcome the resistiiiee of the sprino-s 25, and it will 75 be observed tl-iat the dog is held in either position of adjustment the simult,,ineous eno-a(reii-ient of bills @Nit the@ iiider poel@ets n zn or i-e(,osses oii oiie operttiiio- portion of the doo- and the otiter pocl-zets oil the other op- 80 cratincy po-;,+ion of tlio dog, tIaLis iitipai-tino, a iiiaximuni I oclkiii effect, @nd pi-eventinany aceiclejit,,tl clisplaceinent of the dop,. The opertiting means is prefet@al,)Iy iiiaiiipulatecl, by, ,t hancl iiheet oiequl,.,alent 85 meinber stii,rounding the clitick, ancl to this encl, 'the plites 14 ancl 15 have - otit@iardly projectiiig offset po.-tioiis or extensions 26 )vl-iiel-i are located adjacent to o,-ie ,inot-ber )nd have ,lttiched thei-eto a. hand @Nheel 27. 90 It is essei-itial th,,Lt the tetu,,Ltino- collet 9 be held firmly in adjustecl position so as to maiiitaiii a ticht o-i,ip on tl-ie @NTorl@, and this is accomplished in the follo-winFi,led ivi.thin a recess i.n the housiiig section 95 I-) is ,t retainin(, coll.ar 28 h,,iving openings or pocl@cts there n founted i t e pockets 29 i . IA 11 la are s])ring actiiated bill.s 30 which en(YL(Ye coi-i-espoliclin.@, recesses in the side of the aetti,,iting eoll,.t@ 9, ,is sho)in in Figtires 9o ,tncl 100 4. This impL-I.Its slifficieiit frictional locking eff-ect upon the actuatino- collai- 9 to prevent i.ts accidental i-.Liovement or slipping. The retainer 28 also ctrries a key 31 -which en(riges ,i, gi,oove iii the collet 8 to prevent 105 ttii-nidg iiiovement of the lattet -within the housin-. in operatino, the dei,ice, the entire unit is first.seciir(@l r fixed on a supportiiag spin(Ije by threadin(y'tlae portion -1 thereon. With 110 t-I the collet releas-ld, as shown in Figure 4, a worlc piece x is in.serted, ,),nd the fin or 20 9 of tl-ie r-lversible dog acljusted as sho-wn in Figtire 7. Then by moi,in(y the @hancl wheel P@7 b,,ick 115 ,incl foi,tli, the ,Li-notint of sucli movemelit beino- detei-ininecl by the sp-,ice between the PI-oj-cctiiic, portions 6, see Fi,iii.-e 1-1 the ,ictiiitiii- collar is tiiriied iTi the direction of the i,i-row, see 7, tliei@el)y sliclinthe 120 collet inwtrdly fi-oi,,-i its positi@n of Figtire 4, iintil it reaches the positioll slio-wil in Figtire 3. To i-elease the -work, tl-ie fiiigei@ I)iece 9-0 is sbiftecl to the positioii shown in Fio,tire 8, ,ind then by movi3i@@ t.he band 12 5 tn iilieel 9,7 back ancl fortli, tho acti@@ting coll,,ii9 i.s causecl to trqvel in tl-ie directioii sbown b,), the arrow in Figtire 8, thereby sliclincr the collet 8 oi-it-v@,arclly to tl-ie ])ositi-,-n shoivn in Figitre 4. 131)