US1000442A - Lathe. - Google Patents

Description

w. L. SGHELLENBAGH.

LATHE. KPPLIGATION FILED APR. 4,1910. L

Patented Aug. 15, 1911.

1 4 susInms -snns'r 1.

' Suuenfoz 19m "1% h w an:

W. L. SGHELLENBAGH.

' LATHE APPLIQATION TILED APR. 4, 1910.

4 SHEETS- 81N111? 2.

v "k Jill! J LEW Patentd Au 15, 1911.

4 #HEETS-SKBBT 3.

witness; r 1 I f fj f mg a W. L. SGHELLENBAGH.

LATHE. APPLIGA'IION FILED APR.4,1910. 1 000 442 Patented Aug. 15, 1911.

4 SHEETS-SHEET. 7Q I y n I: X I 76 r' h 50 E I I if; L I fan no if is a deta the long line )1.'- oof Fig.

perspective: vieit of'one ol"-.the stop rings.

UNITED sTATE's WILLIAM L. SCHELLENBACH, 0F EVYOMING. l'fi-I'Tfl LATHE.

Sifeeification 01' Letters Patent.

Application filed April 4,

Patented Aug. 15, 1911. 1919. n Serial No. 553,352.

To all whom it may camera:

lie. it known that .T, lt'iiinhuii L. Sol-[EL- Luxnacn, a citizen of the. United States, residing at Wyoming. in the county of llann lton and State of Ohio, have invented certain new and useful lin n'oveumnts in Lathes, of which the following is a specification.

My invention relates to iu'iprt'ivenients in lathes, and particularly to the tool supporting and ctmtrolling mechanism.

()ne of its objects is to provide a plurality of 'interchangeable and iIuIependent tools.-

Another object is to provide a plurality of interchangreahle tools or tool holders, each controlli-d' by indepciuleut longitudinal or cro'ssfeed stops, or both.

'irnother object to provide means to automatically bring into action the stop mechanism of the particular tool in use,

while the stop nlechanisn'is of the tools not in use are disconnected.

Another object is to provide improved stop mechanism for both longitudinal and cross-feed.

Another object is t6 provide improved feed controlling mechanism to be released by said stops.

It further consists in certain details of form,combination and arrangement, all of which will be more fully set forth in the description of the accompanying drawings in which: I

Figure. l isa top plan view of part'of a lathe, including the [ta l carriage, and embo'dying my iluproveiuents. lTig. E2 is a ver tical SUGlIlUl] through the sa nc'on line m-n1 of Fig. '11. Fig. 3" is a detail viewpartl in section of one of the-tool posts and its hinged carrier detached. .gFig. at is a perspective vicwnt a journal forouc of said hinged carriers; Fig; 5 is a detached top plan view of the. tool si'ipport on which the tool carriers or holders seat. Fig 6 is a central vertical sectionthrough the tool support of Fig. Fig. "7* is a detail bottom plan view of part of one of said hinged carriers of F ig. 3. Fig. 8 is a view partly in central vertical section through Fig. 7 Fi m 9' is a front (dev'ationof the tool carria e, aproinand part'of the-lathe Ways. Fig; 10 sectional view through part. of iudin'a] feed stop-*m'echani "n on..

9.. Fig-5111' a d iiched' Fig. 12is a perspective view illustrating oiie class of work to be operated upon. Fig. 13 is a detail top plan view of a modification of the tool supporting mechanism. Fig. 14 is asection on line z-2 of Fig. 1, through part of the tool carriage and stop mechain position to stop the tool earria e. Fig. 15 is a View similar to Fig. 14 and 1llustrating the stop mechanism parts in inoperative position. Fig. 1G is a detail. of a modification of the stops of Figs. 14 and 15, t0 pr0- ride for rough and finish cuts. Fig. 17 is a detail sectional View on line 15-4. of. Fig. 1, illustrating the hand wheel and cross-feed screw clutch mechanism.

The accompanving one embodiment (if ray capable of embodiment forms or modification,-

In the accompanjirig drawings A A represent the waysor bed of an engine lathe;

invent-ion, which is in several different;

a chuck, in which. the work is mounted or carried, all of 'W'hicl'r parts maybe of ordinary construction.

gear 4. Gear 5 adapted to be clutched to and thus .drlven with gear 4. ;(lear 5 when and 8. Gear 8 'ineahes with. a rack (Z on the lathe'way A and thus serves to propel the carriage D alhng the ways A A. A hand propelled gear 9 meshes with gear 7 and serves when gear 5 is disengaged from gear 4. to feed the carriage D by hand through the crank d. Other forms of power driven in place of that above described;

Mounted in ways E u on the main tool carriage-D is'a CIOSS-f88C tool carriage Whichis adaptedto be fed transversely of the ways A A. by means of a hand operated feed screw e",'Whicl-i has a fixed hearing at e in a bracket d, forming part of the carriage nism, and illustrating the stop mechanism drawings represent B represents part of the head stock and B" a spur gear 3, which mesheswith and drives carriage feed mechanism may be employed D represents the main tool carriage, which clutched togear 4: in turndrives gezrrs 6, 7

I re,w

-- slotted openinlg'h in the carriers, and when D. The hand wheel e which serves to turn the feed screw 6 is' preferably provided with a friction or yielding engagement with the screw 6 to feed the carriage E toward 1: the work, comprisin the cone member 0 on the hand wheel an a counterpart member 6', ri 'dly carried by the shank of the screw ich members are adapted to slip when the carriage E-encounters an obstacle or ex cessi-ve resistance. A ratchet wheel 6 on the shank of screw e and a s ring pawl c, carried by the hand wheel e, urnish a positive connection between the hand wheel and feed screw to feed carriage E in the opposite direction.

Mounted upon the carria e E is a tool support or post F, which isa apted to'interchangeably su 'port' a series of independent tools or tool li olders. The tools and parts interchangeabl carried by the support- F may be formed inte' ral or in two or more parts constituting t 1e tools and the tool older or carrying members, and may be detachable or removable, or may be ivotally or otherwise attached to the carriage member E.

'The tool posts are preiera-bly supported in carriers or links 10, as illustrated in Figs. 1 and 2, which links are pivotally attached to the carriage E so as. to successivbly'or selectivelybrlng the several tool posts carried thereby to a common center or point above the su port F. -The several carriers 10'are provi ed with inclined recesses h, to register with a conical head f on the su port F, and are adapted to be, locked rigi ly in osition on the support E by means of a key carried by the support,'and the cross arms of which key pass'through slots h in the under face'of the carrlersand engage in annular recesses h to lock saidcarriers in place. The ke I is rovided with a gear 11 at its lower on which meshes with a rack J, I which rack engages'and is reci rocated by a gear- J" on the shaft whic is given a partial revolution by hand lever j to engage or disengage the key I from the'to'ol carriers. The shank 7' of the key I is referably v threaded into the-post F, so that t e' rotation of geari serves to draw the cross arms i of the key dow ward tosecure 'afirm engagement between'the respective carriers and t e pgst F. Sai cross arms 13 may, if desired, beveled, as indicated at z" Fi 6, in place of, or in conjunction with, t e threaded shank, to secure a firm engagement between the 0st F and the carrierlocked thereto.

T e base portions ofthe respective. tool;

holders have cross arms similar to'the cross arms 11 of the key which pass the partly rotated hold't-he tool holders in place relative to the-carriers, and permit'the tool holders to be rotated to secure the desired angular adjustment of the tools.

The respective carriers 10 are pivotally attached to the carriage E by pivot ins 16, Fig. 4, the ends of which pins are fl sittened and pierced to engage dowel pins on -the carriage E and are held in place by cap plates 17. The pivotal portion of the res' ective carriers 10 are seated in recesses '18 ormed in the carriage E and by the sides of the plates 17, and the carriers when'in the idle position rest upon buffers 19 in the outer edge of said recesses.

K represents vertically movablepips or plungers, seated in vertical bearings "in the carriage E with their upper ends k projecting into the recesses 18 in position to be engaged and depressed by shding members k carried in recesses 70 in the under faces of the carriers 10 when said'carriers are in the operative position. The sliding members 7: are held in the recesses 70 by means of pins k rojecting into slotted openings In", and sai members is are provided with effects In, so that by adjusting the members is, the stems 76 may be caused to en age the under faces of the mebers 70' to in ly depress the plungers K; or to-engage the ofl'sets k to partially depress the plungers K, or sothat the stems [a will miss the ends of the mem- In serves as a stop for the tool on the final or finishing cut. The stop rods-30,- are adjustable endwise in the recesses 20, to meet the re uirements of difi'erent classes of work,

and a apted to be locked to position by set screws 28 carried by bracket 29 onthe carriage D serve to independently sto feed of carriage E at a pre etermined point for each tool, and the adjustment of any, tool to operative position shifts its stop mechanism into operative osition, and releasesthe plunger K to shitt the mechanism to ino erati-ve position, as soon as the tool is move to its --idle position.

The longitudinal feed of the carriage D on the ways, A A is cont-rolled by independent stop mechanism for the respective tools, preferably in the following manner. The gear 4 is. continuously driven from the shaft (1', and is carried on a sleeye L, jour naled to the apron d. Sleeve L 'is held .a ai'nst end 1117 by a collar L threaded to,

s eeve L' an adapted to. be" locked thereto 1- set screw or similar locking means.

Plungers K and stop rodsBO the transverse studs L. to which are pivotally attached tumblers L; which at their inner edges enga e a collar mon the stem M of clntch mem er M carrying the gear-5. Tl'ieclutch member M is adapted to engn ea counter- )ttl'tciutch'member M on t1' gear 4 to ock the gears land 5 together, and the tilting of the tumblers U serves to shift the stem M 'endwi-se to engage or disengage the clutch members M, M. A sleeve m his an annular recess or engaged by pins mflriirried by tLfOIkEQl bell crank shaped controlling lever N to shift the sleeve of endwise. The sleeve m carries a ring' m;-

which when shifted endwise tilts the twin blers 'L upon their pivots. The controller lever N has a pin n which edmges tumbler n, which is adapted to )e rocited byt'he end thrust of a rod X to. rock the lever Ni and disengage the clutch members MY.

a M to stop the carriage longitudinal feed.

.-'\ rack bar 0 is carried by a clamp O",

which clamp" is adjustable to the desired osition on the lathe way Aa nd then looked, iy clamp screws to. The-rack'barO slides freely "t irongha recess in the carriage D and has at its opposite end an adjustable sto block The upper face of the rack 0 IS also referalily provided with an index orhsca le. 6 to facilitate the adjustment of the carriage.- and' the stop The rack .O

=enga 'es andfdrives a gear orI pinion it,

whic iis mounted in a recess in the carriage Hand held in place by means of a latep,- The gear 1 in turnfdrives'a gear l which is splined to 'a shaft Qand serves to rotate the shaft Q, but allowing shaft'Q to moveendwise. A screw 1 at the 0pposite end; of shaft Q is threaded into a nut.

9'," fl d hji carria'ge E, and serves to alterna-tely shift the sl1aft..Q-endw1s e as it is rotated in opposite directions, as wenas to carry the shaft Q, e'ndwise with thefeed of:

provi ed with -a'series o longitudinaIslets "in its, periphery, and a set-'ies-ot caii-irrin it; are arranged at intervalsonsaid 'sha t t and -lo :kedthereto by screws 1", having their inner ends .rdiieed and adapted to enter any one of thief-islo' tsq to l ock'thekrespcctive c'nmsflt to thd .ro'd, N', to conti'ul the clutch men'ibc'iyM". The shaft'S earrtes a sleeve or collar S,

which is splined to shaft '8' and shoves-end wise .01; said shaft with the carriage E; and

.a' ,has pivotal ly' attached to it-s' upperedge a fleri'ejggi, bars 40; which bars areeniipon-one sl de; of their pivots 41 by wh c as. so I be out 'r of the camfrin R with the head of the 'the'bar 48. 'l-he'object oft-the nut r/wvith desired positionsqiit' shaft; l S is johfrna-led in bearings the r meluge I3, andlm's'at onecnd'a (:tjank'arm or'tap- 'pet-t S, to engage the 't' p'posit iend of the the path of the rotating cam rings ll. as indicated in Fig. 15. A series of levers are fulcrumed respectively upon adjustable screw studs 57 and are inrngagzcn-ient: at or'i'eend respeirljively with the opposite ends 13 of the rock harsh). while the opposite ends of said level-s50 are forked to receive the reduced lower portions of the plungers K ahd to engage beneath the enlarged portion of'said 'ilungers K so that the adjusinu-nt of any one of the tools toop'erative positionupon thc 1.wst I will cause the member K" of carrier 10 of'said tool to engage and depress the plunger K' beneath 'said carrier. which through its lever 50 will act upon the corresponding rock-liar in oprmsitionto its spring stud s. and. \rill tilt said rock bar into the path of the shoulder 1" of its-cam ring it. and the engagement of the shoulder adjustable screw 40 forming, the end of the rock bat-4'0 will force the rock bar 40 endwisc toward the stop bar 48,- which move ment of the rock bar 40 will serve to rock the' shaft S and release the clutch member M to stop the longitudinal feed of'the carriage. This automatic release of clutch M" is designed to occur beforethe ends of the respective rook bars 40 have 001118 into contact with the positive stop bar 48, and the F "operator is thus enabled, where great accuracyds required, to -feed the carriaged) by hand leverxl; untit-t-he end of the particular stop bar 40 entries into, contact wlt h O(] the end of the shaft Q thi-caded' thereto is to provide for an endwise movenu'ntof the cam rings R, so. thatsaid rings may be of con'iparatively small diameter and make two or more revolutions while tlte carriage travels the length of rack O, and the rings It can be adjl-isted lengthwism' as well as circumfercntially of shaft Q. and. it do sired, pass on one or more revolutions lietween and miss the bars 40, until thecar "'riagc has reached the desired position for the stop to act,- thus lll'tfl'lt'llllpj for a greater range of longitudinal feed of the carriage than. could otherwisefhc attained with-(int further increasing the diameter of the can't rin r i J illustrated" in 'Fi :lti theadj usta'ble heads 47,'of thegmek-iiars 40 areprovid'ed wi'thftwo faces 48', 45 either-of which are adapted to be brought into-engagement with i i the face 7' ofthe respective rings It, b -ad: ins-sting the slide k'gto cause the atom In to engage either the under face of'the s'lide lv' or-itsotfset Is", thus depressing'the head 41 g to greater or less extent, and providing stops forboth' rough and finish cuts in t'h'e' longitudinal carnra e feed. i A In-thci'nodi catiomiFi 13 the respective" tools 80 may be attached tot eir r 'tive" fcarriers, 'or holdrs'iji sl, jprj b431 1 13, I

integral 'with said carriers. The respective carriers instead of being pivotally attached to the tool carriage and movable on their )lVOlS to and from o erative position, as

illustrated in Figs. land 2, are detached from the tool carria e in their inoperative posi' tions, and may 0 supported on a convenient rack or table, and are adapted to be selectively locked to a common operative posi- 1 tion upon the tool support F. Said res ective carriers 81., are each rovided wit a projecting arm 82, which is adapted when the carrier is locked to operative position to seat in one ofthe recesses 83, in the top of the tool carriage, and by engagement with the side wa'llsof said recess, to prevent the carrier from rotating, and to'insure a given tool repeatedly occupying the same position relative to the carriage, and its arm 82 in engagement with the desired stop member K. The arms 82 may be provided with slides similar to the slides k. tools as there areslots or recesses 83, may be successively locked to the tool support F, and employed in the same manner as the pivotally attached tools heretofore described;

The mechanism hcrein illiistrated and de-,

scribedfis designed -to produce duplicate PiGCflSJOf work in uantities, and of larger diameter than co'ul bore of a head-stock spindle. Its operation.

is asfollows: If the-work is to be cut from solid stock, apiece of cylindrical stock of any desired length less than the length of the lathe bed, and within the swing capacity oftheklathe, is clamped at one end of the.

chuck B and supported near the opposite end in a guideor-r'estT carried by the tool carriage D, to'which the rest is clamped 0 T-slots T. The severaltools necessa to carry out the operations required, suc as facing; boring, topping, and threading, are mounted in the respective toolholders, G, and the transverse stops 30 adjusted to stop 5 thefeed of the respective-tools at'the points I desired. The housing over-"the cam rings R is then removed and the several cam rii'igsare released from the shaft Q, means of the screw 1:, und said cam rings readjusted to stop the longitudinal feed fOIithB respec- 'tive tools at the pointsdesired. ;'I-"he -;lajthe is then started and thesevera ftools succes- 1 sively brought into'operative position above the support F-end locked there'while performing their 1 re' 'ecti've" operations, each tool being stopp' either transversely or longitudinally 1-l;oth by the operation of the stop mechanism heretofore described Aftereach pi'ec of work;- has been severed from the stool piece 10, or completed without severing, theclamp carrying the-rack O is released, and the rack O adjusted until the stop 0 strikes the carriage I) whenlrack -O is again clamped to tlieliithobed, and the 'toolce'rr iage is in position ready to com- Thus as'ina-ny be passed through the .d back to its initial position with reference to the rack O. The number of tools 1am-- ployed will depend upon the nature of the} work.

treted and descri d is'ca ablefof bei a pplied to an ordinary stye of engine ethe, and by shi in the slidin members k out of contact wit the-stem Jot the plan withoutdisturbi its adjustment,- and the lathes of theturret t e, the cd'rri 'e' and the tool'support is one led to get to the work, and the operator can-getolose to and watch the progress of the work; also work of muchqar r' dimensions than here'- toforc can be read ties.- i

The term tool in the claims hdn'eof is employed to desilg'nate the tool rop'er and its carrier or ho der, where parts are not specifically designated, and whether-said.

whether detachable or pivotelly connected to,

the tool cur'ria The mechanism herein illustrated imaas of my inven'tion. Z y II- aving described my invention, what I claim is? 1. In a lathe, ii tool carriage adapted to lura-lity of tool. holders, iisupport ca liy said tool-carriage and adapteds cessively receive ands'iipport'j'Bli'll tive tool holders in the Same reletit'flu reference to the ccarrlagef'nomrotai'yg'fito carried bysiiid tool l'iolderspand 11mins lock the ri -peutiw tool holdersto said .sii' idlt.

in a iatlie, a tool carriage, mechniifim to feed said tool. carriage, a'lpliiralityfifj tool holder-a, a support carried by-said tool iiiiil i! ppoi't said Mien-five tool holders, to r peatedly support said respective holders in the same i'eiation with reference:

to'the work, merhanism tolock the respec series of operations being fed y hlnd l v The tool carria, e mechanisriiherein illu q parts are integral or separately formed; and

travel forward and. backward on .ways g K, the stop mechanism becomes inopera T lathe-can be'use {in the usual manner of," usingengine lathes. As compared with ilyduplicated in qnanti scribed is capable. of considerable modifies-' tioii without departing from the principle is carriage and adapted to stlcoeSsi'VQIyJmceiVe bers, said respective stop mechanisms each rality of independent stop members each adapted to be shifted to 0 )erative position by a corresponding tool holder when locked to operative ositi0n,ft0 automatically release said tool carriage feeding mechanism to stop the tool carriage feed at predetermined positionsof said tool carriage.

3. In .a lathe a tool carriage movable transversely of the lathe bed, mechanism to feed said tool carriage, a plurality of ad justable stop here adapted to stop the carriage feed' at different predetermined positions of said tool carriage, a luralityof tool holder's, a support carried by said tdol carriage and adapted to suc cessively receive and support any one of said respective tool holders, and to repeatedly support said respective. tool holders in the same relation with reference tothe work, mechanism to "lock said'respective tool holders to'saidsu port, and a plurality jof independent 'stop members each adaptedto be actuated when a corresponding tool holder is locked to said support, to bring said respective stop members into operative'relations with said respective adjustable stop bars to stop the carriage feed.

4. In a lathe, a tool'ca'rri a e adapted to travel forward and backwar on ways, a plurality of tool holders pivotally attached to said carriage and movable to a common operative position and. to different non1operative positionsfa plu ality ofnon -rotary tools carried bvsaiid t0.0 holders, and means to lock said tool holders successively in said operative position.

5. In a lathe,a tool carriage comprising a primary member carried on "the lathe bed and adapted to be 1 longitudinally of said lathe bed, an d misecondary' non-rotary member carried by said primary member and movable transversely of; the lathe bed, inv dependent mechanismsto feed said respective carriage members, a plurality of independent tools each havingan operative po; sition with reference to sa d secondary'caritia e member and an inoperative (position,

an inde pendent stop mechanism for each tool 'adaptec to co'ntrolboth the longitudinalhnd trapsve'rsesfeed of said tool: carriage memhaving an operative and an'inoperative p0 sition, and means controlled by the movements of said res 'iectivef tools tooperatijve or inoperative position, to shift theirrespective stop mechanisms to operat ve or inoperative position. 1

6. In a mechanism of 'the cliaracterfdescribed, a lathe, a tool carriageadapted to travel fo'rwa rd andliackwatdj on vays, and PI'OVltl Qd sflvltll .a non' rotary tool support. power: driven rnechamsm to feed said tool carriage. an uutrnnatically controlledimem ber to'release said power'driven' mechanism,

a plurality of independent tools each havin I an operative po "ion with reference to sair 5 carriage and tool support-and an inoperatire position, an independent stop member for each tool having an operative and an inoperative position. and movable in unison with said respective tools to operative or inoperative position, and means adapted to to actuate said automatically control-led releasing member to automatically release the power driven earliage'fceding mechanism.

,7. In a mechanism of the character described, a lathe provided with a stationary rack 'andfa shaft adapted to drive a train of gears on a tool carriage, a tool carriage, a train of gears carried by saidttool carriae, driven .h v saidshaft, and engaging sai stationary rack to feed said tool carriage longitudinally of said'lathe bed, a clutch interposed in said train of gears, a plurality of independent tools eachhavin an operative position with reference to sait carriageand an inoperative position, an indepepde'nt stop member for each tool having an operative and an inoperative position, and movable in unison with said respective tools to operative or'inoperative positioma rack adjustable along" said lathe bed, astop member receiving motion fro'm said adjusts able rack through the longitudinal feed of said tool carriage, said respective, stop members being adapted to interenga e atpredetermined positions of. the too? and mechanismcoiitrolled'by the engagement ofsaidstop clutch to stopth'e fed-of saidflt'ool carriage,

8. In a lathe, a-tlo'ol earria-ge nechanism to posit-ivelv'feed aid tool carriage longisupport and an inoperative position, an independent stop member for each tool having and movable-in unison with" said'respective' tools to operative or inoperative position, a rack,.a sto .member recelv ng'motionirom carriage, said respective tool controlled and rack controlled stop" members being adapted to interengage at predetermined; ositions of the tool carriage, and mechanism controlled by the engagement of said stop memand stop 'the'toolgcarriage feed. 9, ,.In' a lathe a tool. carriage, mechanism riage, a plurality of toolsgeachhaving an operative position with referenceto said carriage,

.100 members to release said l f bed, a'clutch controlsaid rack t rough the movements of thetool bers to automatically release" said clutch to positively feed said tool carriage longitu dinally of the lathe bed,a"cli 1tc h'eontrolling said tool carriage 'eedi mechanism, tnonrotary tdolksupport mounted on"said=- car5,.

be engaged by' said respective stop members carriage, a plurality of toolseach having: an operative position ivithreference;to saidtool an opemtive and an inoperative position,-

lation relative to said support, interengagmg faces on said tools and said locking member to lock said tools in plate upon said support, and mechanism to shift said lock mg member to lock and unlock said tools.

17. In a lathe, a tool carriage, mechanism to positively feed said tool carriage longi-' tudinally of the lathe bed, a clutch controlling said tool carriage feed meehai'iisi'n, a plurality of tools each having an operative position with reference to said tool rriage and an inoperative position, an independent stop member for each tool having an operative and an inoperative position, and movable in unison with said respective tools to operative or inoperative position, a rack adjustable along said lathe bed, a shaft receivmg rotary motion from said rack through the movements of the tool carriage. means to shift said shaft endwise in unison with its rotary motion, a plurality of rotary stop members adjustablv carried by said shaft. said tool controlled and said lt':t:t]' V stop members being adapted iO l]')i'('ttl] J'tlg(- in pairs at predetermined positions of the carriage and mechanism controlled by the en- -gagement of said stop menilarrs to release said clutch and. stop the tool carriage feed.

18. In a nit-chanism ot' the character described a tool carriage. n'u-rhanism to feed said tool carriage. a multiple tool support carried stationarily with r ference to said tool carriage and adapted to interchange ably SIIPI'H'JIT- a plurality of indtpendent tools. and to repeatedly support the san'ie tool in th same relation with reference to said carriag'. mechanisn'i to l()(l said tools successiwiy to said tool support. and an independent stop member for each tool. havmg an operative and an in perative positiomand movable in unis n with aid respective tools to operative or iu o wrative position, said respective stop members: being adapted to auton'iatica-llv stop the feed of said tool carriage.

if). in a lathe. a too] carriage meehanisn'i to feed said tool carriage selwrtively by power or by hand. a tool support mounted on said carriage. a plurality of tools nonrotatively supported upon and with reference to said 'earriage. and earh ha ving an operative position relative to said too] sup- .port, and an inoperative position, a stop member for each tool having an operative 1 and an inoperative position and movable in unison with said respective tools to operative. or inoperative position. mecl'ianism adapted to be actuated by said respective tool controlled stop members to release said tool carriage .p'ower'feed, and a positive stop for both power apd hand feed. adapted to stop the tool carriage hand feed subsequent to the release of "said power feed to attain an accurate stop of the tool carriage.

" '20." Tlfia'lath'e; a tool wa'rr-i'a ge inech anisn'i l 1 l l to feed said tool carriage selectively by power or by hand, a non-rotary tool support; mounted on said carriage, a plurality of tools non-rotatively supported with reference to said carriage, and each having an operative position relative to said nonrotary tool support, and an inoperative position, a stop member for eaeh tool having an operative and an inoperative position and movable in unison with said respective tools to operative or inoperative position, met-ha nism adapted to be actuated by said respective tool controlled stop members to release said tool carriage power feed, and a positive stop for both power and hand feed adapted to stop the tool carriage hand feed subsequent to the release of said power feed to attain an accurate stop of the tool carriage.

2]. In a latl1e,a tool carriage, mechanism to feed said carriage longitudinally of the lathe bed. a plurality of independent tools non-rotatively supported with reference to said earriage and ea h having an operative p sition with referent-e to said carriage and an inoperative position. an independent stop member t'o'r each tool carried by said tool carriage and ha ving an operative and an inoperative position, and movable in unison with said respective tools to operative or inoperative position, and an adjustable stop member adapted to inter-engage .with said respective tool controlled stop members to stop the carriage feed at predetermined positions of said earriage.

In a lathe. a tool carriage, Il'lQtlltlfllSlil to feed .said carriage longitiulinally ot' the lathe bed a plurality of indepemlent tools each having an operative position with reterenee to said carriage and an inop rative positioia an independent stop member i'or each tool carried by said tool carriageand having an operative and an inoperative position, and movable in unison with said respective tools to operative or inoperative position, and a stop member carried by said carriage and 'i'novable' in ratio to the ni0vement of said" carriage. and adapted to en gage said res 'iective tool controlled stop members when in operative position to stop the carriage feed at predetermined positions of said carriage.

23. In a lathe, a tool carriage, mechanism to feed said tool earriage, a tool support ear ried stationarily by and with relation to said tool carriagr and to which a plurality of independent tools are adapted to be selectively locked, a plurality of independenttools adapted to be selectively seated and locked to operative position upon said tool support, and ii'nlependent means controlled by each of said res 'iective tools when locked to operative po ition adapted to stop said tool carriage at varying predeteri edlpositions.

iii. In a lathe. a tool carriage'adapted to traivel forward and backward upon; the luthe yidual point of engagement with said tool a non-rotatively supported: tool rest rest, wherebyvsaid independent stops maybe mounted upon said carriage a; plurality of res ctively enga ed and controlled by said independent. stop members adapted to travel 'too s when locke tooperative position. sversely of the carriage feed, and a plu In testimony whereof I have affixed my 15 'ity' oftools adapted to be successively I signature in'freence of two witnesses.

too common operative position upon WILL AM L. SCHELLENBAOH. tool rest, each of said tools having a. Witnesses:

ofengagementwith said tool rest com- C. W. MILEs, olnonto all 0 said tools and another indi i I ALBERT W. SCH ARTZ.

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