US932391A - Sewing-machine. - Google Patents

Description

C. M. HORTON. SEWING MACHINE. APPLIOATION HLBDJUNI: 1a, 190s.

Patented Aug. 24, 1909.

3 SHEETS-SHEET 1.

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C. M. HORTON.

SEWING MACHINE.

APPLICATION FILED JUNI: 1s, 1908.

Patented Augy24, 1909.

3 SHEETS-SHEET 2.

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@vwl www MSW/www C. M. HORTON.v

SEWING MACHINE.

APPLICATION FILED JUNI: 1s, 190s.

Patented Aug. 24, 1909.

3 SHEETS-SHEET 3.

UNITED sTATEs .PATENT our-ion omirns u. Hormon,

lizabeth, in the county of .OE ELIZABETH, NEW JERSEY, ASVSIGNOB T THE SINGER MANUFCTR- ING GOMPANYNA CORPORATION 0F NEW JERSEY. Y

SEWING-MACHINE.

residing at Union and State of New Jersey, have inventedcertainnewf `and useful ,Improvements in Sewing-Ma- .'-ychineSyof which the'OHOWHg is a Specifica* tion, yreference being had l.companymg drawings,

This invention relates to an therein to the acimprovement "v'in .sewing machines for producing groups of stitches in sewing on buttons,

binding -the -^edges"otf buttonholes and other. operations stitches to the work.. Theinventionhas the provision ofja wo finvolving the application o f groups of having the usual cra for its primary object rk-holder in which the' work willbe invariably clamped before the beginning ofa stitchi tainefd` firmly clamped stitching operation and machine. p

Itlias for itsv further ob trol'lof thei stop-motion :opening the lofthe machine is insured of'each cycle of operation, the actuation o isa similar side elevation n' with AitsA operating me n Y of the cam-wheel whichl is 45v view of such parts with the machine in section.

to another being prevented by the control of the operator or attendembodyingA the present invention.

the parts behind the same:

the bracket-arm of Fig. 4 is aperspecng operation 'and mainthroughoutsuch released onlyatjthe completion'of the cycleof operation oft-hefv Hect'the continued machine from one stitching means The invention consists in the construction msm herein shown.

li in the .appendeddrawings, Figure ll a. .fiat button sewwell-known Singer' type.

Fig. .2 of the work-clamp ans, with the exception omitted to expose and Fig. 3 a plan tive view of the stop-motion device and the clamp .operating means.

'tror ling 'mechani 1 of" As shown in my prior ent of December 19,1905.

sin. Fig.

Fig. -5 is a det-ail lanview ofi the interengaging members of device and the clamp Acon- -6 is a detail view the athread pulling device.

United States pat- .p 'stop Patented Aug.l 24, i909.

i resen ing the'inachine iny which the present impr vement. is embodied, the machine is provi ed with a hollow bed 1 aiording a suppt rt for the bed-plate Q of lthe machine fram upon which is mounted the usual bracke arm 3. The main shaft 4 is journaled in the bracket-arm and provided at its forward end with a take-up cam-cylinder 5 l nk -pin connected by means of the pitinan 6 with a lateral stud upon the needle-bar 7 which is provided with an eye-pointed needle 8 coperating with a shuttle mounted in the. shuttle-race 9 in amannerwell-known.' rlhe main-'shaft 1 carries at its rearward end the usual fast and loose pulleys 10 and 11, the former being provided with the stopping cam 1Q with substantially -snail shaped periphery formed with the notch or recess 13 entered by the reduced upper end-14 of the spring-pressed bolt 15 slidingly mounted in the vibrating stop -lever 16 which is fulcrumed ina anner well-known lin the forked swivellock-1 7 itted to the bearing 18 extended v from the back of the bracket-arm.

The lever 16 carries the belt-shifting arm 19 embracing the pover transmitting belt. `forwardly against the stress of its spring 16,a to disengage the stop-l rod fromthe stoppingcam 12,A by engagement therewith of the depending arm 20 fof an angular lever having a latera arm Q1 connected with the usual treadle device by means -to be hereinafter described; being .maintained in retracted position-by means 'of a latch-lever having a rearwardly extending arin provided with a hook 23 adapted to engagea correspondingly shaped tooth 21 formed in the rearward-.side oi the lever 16, being held normally in Contact with the side face ot the latter by means of a spring The forwardly projecting armof the latchlever is provided with a lateral wedge-shaped projection 2G normally lying in the path of' the trippingpoints 27 carried .by the camwheel 28 ixedup'on the shaft 29 which is mounted in a bearing boss 30 extending laterally from the upri g it portion of the bracketarm 3, the shaft :29 being provided at its opposite end, within the bracket-arm, with the worm-wheel 31 meshing -with a worm' 32 upon the main-shaft 4.-. The tripping of the latch-lever 22 serves to release' the stop-lever 16, which is thrown backwardly.under the action of its spring to bring the operative end 14 of thefbol-t -:15 into operative engagefiat spring 57 whose outer end is formed ment with tl-ie periphery of the stopping cam l12, whose rotation is retarded thereby and finally arrested by entrance of the bolt head 14 into `the cam-notch 13, but not until the ln'iomentuni of the connected parts has caused the cani to throw the lever 16 laterally upon its 'swivelblock-17 in opposition to a bufferspring 33 *acting upon a plunger-rod 34 housed within a-,cuiv'lindrical casing 35 carried by the-machine rame,gthe inner end of the plungerfrod 34` top-lever l16. The lower `ver 16 is provided with an aperture'16X1enterejd' by the extremity of an arm 35,X of lcutter-actuating rock-lever,

wherebyy the over-throw of the machine serves to ,actuate suitable cutting knives to *sever -the upper and lower threads of the ,-210 frmer'lfuted States Patent No' .Sori-676' l The traveling stitching. vmechanism, as described in my work-holder of the .present machine is composed of a lower Jaw 'aff forded by a flat plate 36 and a relatively movable upper jaw 37, shown in the drawwings -as one ofthe members of a button- 'cl'ainp The lower )aw or work-supporting the rear-ward end of a plate 43 clamped v lpl'ate36 is secured by means of a screw 38 i ofthe'forward end of a slide-bar 39 upon 'the `rearward end of which is mounted av lockf40 recessed to receive lthe downturned --v--itearwardend 41 of the vsupporting arm 42 pivotallyhiounted therein-and carrying' at its forwardtend the upper clamping jaw 37. The topvof; the block 40 is channeled to receive thereonby means of the screw-bolt 44 and yhaving adjacent the same a stop-screw 45 v- "adapted to engage thetop of the arm 42 "to limit its upward movement when the work-claihp is opened Vfor the introduction I "or release` of the-work. The clamp-arm 42 .is provided near its forward end Iwith an upwardly projecting stud 46 proi ided with .45"

a socket 47 hayinga` hemispheri :al `cavity with'screw-threaded sides entered )y a simi- V '.{larly threaded bushing 48 with a hemi-` spherical lower end and a central a )ert-ureto receive theshank of the rod 49 hai ing at its .450 i cavity of the' socket 47 and having its upper lower fcntl the ball 50 seated in the spherical y [threaded 'end introduced in a similarly i. Athreaded socket of the thrust-rod 51 providecl/witlizft spherical head 52.

the lupright portion of the bracket;

' anni is fulcruined by means of the screw# -stud 53 a rock-lever having a forwardly extending arm ;54 provided in its free end with an 'aperture' flared at the top to forni a hemi- ,spherical socket `55 and with a rearwardly extending arm 56. The rod 51 extends up-y wardly through the aperture in the arm 5 4 ofthe rock-1ever and Aits spherical head 52 is seated in the Psocket 55therein, being yield*v ngly maintained in position by means of a -iiiggad'apted to engage the vafforded bythe mit? 9 is so adjusted that with a' slight cavity" fitted to the top of the' ball 52 and whose rearward end is secured by means of fastening screws 5S upon a projecting seat on the upper edge of t ie arm 54.

vThe rock-lever is normally maintained with its arm 54 elevated to open the wb'rloholder by means of a spring 59 interposed between a lateral pin 60 upon the rearward arm 56 and a stud 61 upon a bracket 62 secured by means of screws 63 upon the bed-plate.

The rearward end of the lever-arm 56 is forked at 56X to embrace the upper end of a link-member 64 connected therewith by means of arpivotal screw 65 and having its 'lower end interposed between and*v connected by means of a screw-,pin 66 with the upper ends of two-, parallel links 67 and 68 which are in turn embraced between andpivotally connected-'by'nieans of the screw-pin 69 with the spaced ears 62 of the bracket 62. The llink 64 forms, with tlielinks 67 and 68,

a toggle connection between the rearward.

extended to form a downwardly projecting I arm 68X which is formed with a perforation adapted to receive theeyed end of ajforwardly extending shift-rod V7 2 having fa handle 73 at its forward end by means of which the toggle may be bent and straight-L ened to rock the lever 54 56 in opening and closing `the work-clamp.

' Mounted upon the pivotal screw-pin 69 intermediate the link members 67 and 68 is an angular lever havingan upwardly ex-- tending short arm 74 carryinga lateral pin 75 Vadapted to engage the forward edge of the link member l67, and having a '.rearwardly extending'arinv 76 :connectedat its extremity by means of the screw-pin 7 with the eyed lower end of a rod 78 having. a

screw-threaded `upper end ,passed through. the apertured rearward end of the armL 21"--l ofthe clutch-shifting lever and provided above the same with the thrust-nut 79 and jam-nut 80. The shoulder upon the rod 78` when the rod 78 is drawn downwardly for shifting the stop-lever 16 to start the machine, the nut 79 is disposed slightly-"above the'lever-arm 21.to provide a certain amount of lost-motion, whereby l the initial j'movement of the rod 78' is to .depress thevleverarm 76 so as to practically straighten' the.

toggle 64, 67, 68, before the stop-bolt 15. .isy; whollyy disengaged from the stopping cam. f-

12, .vtliusfinsuring the closing ofl the clamp upon the work before the final release of the `.stopping cam fixed upon the main-shaft to itthe"V starting of the stitching mechfermzacam portion adapted; to b e engaged .n heg-extremlty of a' tripping fingerF 83 .geamfoobpe 84a 'Secured by means of ff screws 85a1to the rearward ace of the stop- "lever 416 in such' position that ,the point or operative extremity of the finger 83 is in 'foperative relation with thecam portion of the finger 81 when the toggle is' straightened andthe stop-lever 16 has been thrown into operative relation with the stopping cam 12 just prior to the stoppage of the machin'. The lateral movement of the.

stop-lever 16 due tothe over-throw of the machine caused fby the engagement of Y the stop-bolt 15. with the notch 13 of the stopping cam 12 causes the advance of the finger 83 outward and the' engagement of its voperative extremity with 'the cam portion of thenger 81, by means of which the latter isthrown backwardly and the link is shifted forwardly a suiiicientr distance to bring the pivgtal pinF 66 of the toggle device forward of the' neutral position of the toggle, Wherebythe resistance to the vaction ofthe springA 59 upon the rock-lever v54 56 is removed and the latter isl permitted to. tilt upon its fulcrum 53 to open the work-holder.

motion and Vclamp-operating devices and the the machine support for connection with al treadle or other operating means beneath the machine support comprises a block 84 secured to the u per portion of the rod 78 and formed with. Aat-eral spaced lugs 84c embracing the adjacent ends of a pair of spaced links 85 and 86 pivotally attached thereto by means ofscrew-pins 87. Intermediate the apsite ends of such links is pivotally connected by. means of the screw 88 the reduced upper endfof a rod 89 having an apertured lowerend entered by the hooked upper end of a pull-rod 90 extended downwardly beneath suitable treadle device and surrounded by a Vspring 91 interposed between a fixed thrust collar 92 upon said rod and a washer 93 s'eatedupon the supporting table 94, which is provided with aslot 95 through which the rod 90 passes.v

The double link-member 85 86 is normally maintained in upright and substantially parallel'relation with the rod 78 by means of a sprin 96 having one end secured to a bent pin 9 vupon the block 84 andthe other vend attached to a lateral pin 98 upon the/ link 85.. The clutch operating parts are therefore normally maintained in such "i relation that the maintenance oi' the rod -90 in lowered or operative positlon will The common connection b etween the stopact through the double link-member 85 86 and connecting rod 89 to confine the leverarms 2l and 76 in depressed or operative position, wherein the stop-lever 16 is in its forward or" inoperative position and the Aclamp controlling toggle64, 67 68 is in straightened or operative position. As the arms 21 and 76 are notpositively connected withthe parts which they operate, repeated accidental actuations of the tre-adlerod 90 during the cycle of operation of the .machine would obviously have no eiiect upon 'the operative parts until the tripping of' the stopiotion by engagement of the tripping point 27 4of the' cam-wheel 28 with the latch ever l22; but` without some special provisio against such contingency, the drawing dow of the rod 78 or maintenance ot' the I operation, which would evidently' injure the work. To avoid this-contingncy,'thc linkmember 86 is provided with an upward extension having a forwardly projecting laterally offset finger 86 which lies, when the rod 78 is depressed, normally in the path of movement of the rearwardly extending arm 99 of a lever pivotally mounted uponv the machine frame at 100 and provided with a forwardly projecting arm 101 whose operative edge liesnormally directly beneath the tooth or projection 26 of the latch-lever 22, where it is maintained by means of a spring 102 interposed between the same and a screw-stud 108 upon the socket 35.

' As the tripping point 27 of .the cam-wheel 28 approaches the tooth 26 ot the lever from below, it engages and shifts the lever 99 101 upon its fulcrum 100 so as to displace the double link-member 86 laterally to shift the pivotal pin 88 out of alinement with the rod and pivotal pin 8.7, so as to bend the toggle composed oi the double linkmember 85 86'and the connecting rod 89, whereby the succeeding tripping of the stopmotion to releasethe stop-lever 16 permits the latter to assume its operative relation with the stopping cam 12, and rock the angular lever 20 21 which raises the rod 78 and rocks the angular lever 74 76 to release the clamp closing toggle, ie parts above mentioned being thus brought into the-position represented in Fig. 4, in which the stoplever 16 is about to be shifted laterally under the momentum of the moving parts of the machine to cause the cutting of the work-clamp closing toggle in finally opening the workfclamp. As soon as the treadle-rod 90 is released, the spring 91 serves to restore it to raised inoperative position, which enables the spring 96 to ieturii the double linkineinber 85 86 to initial vertical position in readiness for a succeeding actuation of the stop-motion device to produce a further stitching operation.' f

The. vaiiable closing ofthe clamp of the present improvement upon materials of different thickness would cause a variation in the initial retracted position of the threadpulling finger, were the latter operatively connected with the upper jaw of the workclamp, and the present invention is designed to insure that-.the thread-pulling finger shall invariably be retracted suiiiciently beyond the needle-path which it crosses in its operative movement to insure against interference with the needlevin the stitching operation. To this end, the Ahead of the bracket-arm is provided with a depending lug .104 upon which is pivotally mounted a plural-arined lever of which the depending arm 105 carries. a wire thread-engaging nger 106 with laterally bentlower end'noimally lying at one side of the needle-path but adapted to cross the same when the needle is in raised position and of which lever a lateral arm 107 j 109 having-its upper end or shank 110 secured for vertical adjustment by means of the set-screw 111 in a socket 112 at the forwar end of the lever-arm 54. As will'be observed, the outer end of the lever-arm 105 is formed with a laterally forked lug 105X through which passes the wire shank of the vfinger 106 wliichis formed at its upper eud with the loop 106X a'dj ustably secured upon t-he arm 105 by means of the fastening screw 113.v

lVhile the rise of the rock-lever arm 54 under the action of the lifting spring is determined by thestop-screw limiting the rise of the clamp-arm 42, it will be observed thattlie downward movement ofthe arm 54 lis positively determined by the straightening of the toggle 64 67 68, whereby the downward movement of the hook 108 serves .t o invariably retra't the thread-pulling inglink or thrust-rod 51 in opposition to the spring 57-carried by the rock-lever arm 54. Y As described in my Patent No. 807,676, before mentioned, the work-clamp of the pres'- ent machine has iniparted to it a transverse reciprocating motion by means of the c'am-- track 114 in' the rear face of the cam, which is entered by a roller-stud upon the rocklever 115 l fulcrumed at j 116 upon a fixed bracket 117 secured tothe bed-plate and observed that in the initial-p6siti-ons of the various parts of the machine represented in` F ig. 1, the work to be stitched is introduced between the clamp-jaws 86 and 37 and the jointed treadle-rod 89 90 drawn down-' wardly in opposition to its spring 91., the

lost-mot-ion between the top of the lever-v arin 21 and the thrust-nut 79 permitting theinitial movement of the depending rod 78 to depress the lever-arm 76 and practically straighten the clamp-closing toggle preparatory to the rocking of the angle-lever 20 21 to extreme position for disengagement of.l

the stop-bolt 15 from the engaging shoulder of the stopping cam 12, the belt-shifting arm 19 being simultaneously moved to throw the power belt upon the fast pulley 10; whereby the "clamp is first closed and the stitch-forniing and feeding mechanisms are then set in operation. Although the treadle-i'od is ordinarily released immediately after the trip.- ping of the stop-motion device to start the "machine, the maintenance of the treadle depressed during the operation of the machine is provided for in the present improvement as already described. In its lowered position, the treadle rod maintains, the trip y)ing finger 86X in the path of movement o thel lever 99 101,as represented in Fig. 2,-the

ioo

lever-arms 21 and 7G remaining also in their,v

lowered positions. As one of the tripping points 27 of the cam-wheel 26 approachesactive position,A it.v first engages the arm 101 of the release lever whose other arm 99 engages and thrusts aside the projecting linger 86X of the link member 85 86 which shifts such link-member out of nor,- mal substantially parallel relation with the rod 78, and bends the toggle afforded by such link-memberin conjunction with the treadle-rod section 89; and the succeeding y tripping of the latch-lever 22 by the tripping point 27' disengage's -such latch-lever 4 from the `stop-lever 16 and causes the latter to move backwardly under the action of'its f spring into operative relation with :the stop- l ping cam 1,2, the angle-,lever 20 212- beingl thereby rocked to lift the rod 7 8' and remove the confining pin 75 fromengagement with the link-member 67 of 'the clamp-closing toggle device, which position of the parts is represented in Fig. 4 just prior to theiopening of the clamp. The momentum of the rotating parts operates at this point by the engagement of the opposed shoulder of the notch 13 of the stopping cam 12 with the head 14 of the stop-bolt 15 to throw thel stop-lever 1G laterally in opposition tothe.

spring 33, which first causes the severing of the threads under the action of the bellcrank lever 35X and finally causes the bend- 'ing of the clamp-closing toggle to permit the clamp to open under the act-ion of the spring 59. by the engagement of the cam-iinger 85 upon the stop-lever 1G with the extension finger 81 of the link-ineinber G4.

Having thus set forth the nat-ure of the in- `vention, what I claim herein is 1. In a sewing machine, the combination with stitch-forming mechanism, of a traveling work-holder having work-clamping jaws one of which is movable toward and front the other', a rock-lever mounted upon a fixed fulcrum and having a universalconnection with the movable jaw of said work-holder, means includinga toggle device connected with said rock-lever for controlling the position of the same, and means for straightening and bending said toggle to close and open the work-holder. f

' 2. In a sewing machine, the combination with stitch-forming mechanism, of a travelving work-holder having work clamping jaws one of which is fixed upon a supporting arm and movable toward and from the other, a rock-lever mounted upon a fixed fulcrum, a link intermediate an arm of said rock-lever and the clamp-jaw supporting arm and having universal-joint connections with each, means including a toggle device connected w'ith said rock-lever for controlling the position of the same, and means for straightening and bending said toggle to closeand open the wbrk-holder.

3. In a sewing machine, the combination with stitch-forming mechanism, ,of a travel i with stitch-forming mechanism, of a traveling work-holder having) work-clamping jaws one of which is. mova Isaid movable jaw, a/rock-lever mounted le toward and from` the other and a supporting arm carrying y l 'ci n l upon a fixed fulcrum, a link intermediate an arm of saidy rock-lever andthe clamp-jaw supporting armA with which the same is connected by ineansvoi1 ball-and-socket joints, n'ieans including a toggle device connected vwith said rock-lever for controlling theposi- 4tion of the saine, and means for straighten- :nig and bending said toggle to respectively rclcse and open the work-holder.

5. In asewing machine, the combination with stitch-forming mechanism, of a traveling work-holder having work-clamping jaws one ot' which is movable toward and from the other and a.l supporting arm carrying said movable jaw, a rock-lever mounted uppn a fixed fulcrum, and provided with an arm extending above the clamp-j aw supporting arm and having an aperture with a socket in the upper side, a link passing through'the aperture in said rock-lever, arm

.and having a spherical head seated in.y the socket thereof with its opposite end connected by'a universal joint with the',clamp-arm,

a spring'secured to said rock-lever arm and bearing upon the head, ofisaid link, meant,l yincluding a toggle device, connected with said rock-lever for controlling the position of the same, and means for straightening and bending said toggle to respectively close and open. the work-holder.

G. In a sewingv machine, the combination with stitch-fori'ning mechanism, of a traveling work-holder having work-clamping jaws one of which is movable toward and' trom the other and a supporting arm carrying said movable jaw, a rock-lever, a link inter-` mediate an arm of said rock-lever and the clamp-jaw supporting arm and having u niversal-joint connections with each, a1 spring connected with said rock-lever for tiltingy the saine to raise the movable clamp-jaw, a stop-arm overlying the clamp-jaw supporting arm and adapted to limit the rising movement of the movable"clamp-member, means-including a toggle device connected with said rock-lever for cont-rolling the position of the same, and means for straighten- C' ing and bending said toggle to respectively close and open the work-holder.

7. In a sewing machine, the combination with stitch-forming mechanism, ofl a travel'- ing work-holder having work-clamping jaws one of whichiis movable toward and from `the other and a'supporting arm carrying 'said movable jaw, a rock-lever, a link intermediate an arm-of said rock-lever and the` "clamp-jaw supporting arm and having universal-joint connections with each, a spring connected with said rock-lever for tilting the saine to raise the movable clamp-jaw, a .estopmean's including a toggle device connected with said rock-lever for con- '125 arm .overlying the clamp-jaw supportingtrolling the position of the same, and means for straightening and bending said toggle to respectively close and open the workholder. 'l 8. Ina sewing machine, the combination with stitch-forming mechanism, of a travel- V`ing work-holder having work-clamping jaws one of which is movable toward and from,

f lthe other, ai'ock-lever operatively connected -with the movable jaw of said work-holder, 4.means including a toggle device vconnected i wlth saidjrock-lever for controlling the .position ofthe same,umeans controlled 'by the startling: and. stopping of t-he machine for 11i straightening and .bending the toggle device to respectively close and open the workholder, and means connected with the toggle `device and independent of the irst-named controlling means and accessible adjacent the .2Q work-clamping jaws whereby the toggle dev1 vice may be operated while themac'hine is at 9. In a sewing machine, the combination with theframe comprising a bed-plate and an overhanging bracket-arm, and stitch-forming "mechanism mounted therein, of a traveling work-'holder having work-clamping jaws one of .1. whieh`is movable'toward and from the other,f,a rock -lever operatively connected 3Q with themovable jaw of 'said work-holder, means including a toggle device connected .with s'aidlrock-lever for controlling the positi the same,-means controlled by the jg nd stoppingI of the machine for gliteni g and bending the' toggle device to respectively close vand open the work- 1'2 holder, and means connected ywith the togglel device and independent of the lfirst-named i controlling meansand extended beneath the 40 bed-plate to a position.v adjacent the work- '.'Hiclalunping`- jaws whereby the ltoggle device maybevjoperated while the machine is at rest'.

10,- In a-,sewing machine, the combination i5-with lthe frame comprising 'a bed-plate and .overhanging bracket-arm, and stitch-formz'fing mechanism mounted therein, of a traveling work-holderhavingwork-clamping jaws one of which is movable toward and from .450- .thefotheig a rock-lever operatively .connected with: the movable jaw of said work-holder, a

'IIL-toggle device disposed above said work-plate fand-having, one of itsmembers 'connected withlsaid lever and another ot its-'members fextended downwardly beneath the bed-plate 4 lffor controlling they positionot said rock- .-"lever, means controlled by the starting and stopping of the machine forstraiglitening and bending the toggle 'device to respectively close and open the work-holder, and a rod l cdnnected with said extension ofthe toggle ""Ifnember and extending forwardly beneath L the-'bedplate adjacent the work-clamp jaws 'for controlling the togglewhile the machine is at rest. y

11. In a sewing machine, the combination with stitch-forming mechanism, of a traveling work-holder having \\'orl -cla1iipi1igjaws one of which is movable toward and' from the other, a rock-lever operatively. connected with the movable jaw ot' said work-holder, means including a toggle device connected with said rock-lever for controlling the position of the same` andv means acting independeiitly upon ditferent members of said toggle device for respectively straightening and bending the same to vclose and open the work-holder.

12. In a sewing machine,the combination with stitch-forming mechanism, of a traveling work-holder having work-clamping jaws one of which is movable toward and from the other, a rock-lever operatively connected with the movable jaw of said work-holder,l

means including a toggle device connected v with said rock-lever for controlling the position of the saine, manually controlled'means actinguponione of the members ofsaid toggle device t'or straightening the latter and automatically acting means engaging anothermember of said toggle device tor bending the latter.

13.l In a sewing machine, the combination with stitch-forming mechanism and a stopinotioii device including a swinging stoplever for controlling the action of said stitchforming vmechanisnnot' a. traveling workholder having work-clamping jaws oneot which is movable toward and fromthe other, a rock-lever operatively connected with the movable jaw of said work-holder, a toggle device connected with said rock-lever for controlling the position of the same, and having one of itsmembers disposed within the range of movement of said stop-lever whereby the toggle is adapted to be bent to permitthc opening ofthe work-clamp, and" manually controlled means acting upon another member of said toggle for straightening the latter to close the work-clamp: V

14. In a sewing machine, the combination with the main-shaft and stitch-forming mechanism operatively connected therewith, and a stop-motion device including a swinging stop-lever, a. spring-pressedv b ol't and a stopping cam upon the main-shaft into and out of operative relation with which said bolt is adapted to be carried by the stoplever, of a traveling work-holder having work-clamping jaws one of which is movable toward and from the other, a rock-lever operatively connected with the movable jaw of said work-holder, a toggle device connected with said rock-lever for controlling the position of thesame, and having one of its members disposed lwithin the range of movement of said stop-lever whereby the toggle is adapted to be bent to permitthe opeiing of the work-holder, a lever adapted to engage a member of said toggle device 130,

to straighten themsame in closingthe clamp, l

and-,a common manual controlling device cperatively connected with the stop* lever 1 -,the toggle-straightening lever whereby .inglefactuation serves to successively straightenlthe toggle to close the clamp and to' 'shiftthje stop-lever to permit the rotation of the main-shaft for .a stitching operation.

, 15. In a sewing machine, the combination with the main-shaft vand stitch-forming mechanism operatively connected therewith, and a stop-motiondevicevincluding a stopative relation with which said bolt is adapted to be carried by the stop-lever, a spring for pressing said stop-lever longitudinallyoli-the f main-shaft with its bolt in operative engage-J nient with the stopping ca in, an automatic-v having work-clamping movable toward and from the other,

ally controlled latch for maintaining said stop-lever in retractedinoperative position,

and' a spring-pressed butler for normallyv `Qiold'ing the stop-lever against transverse inovemeiit whenfin operative relation with the stopping cam, o-a traveling work-holder jaws one of which is ever operatively connected with the movable aw of said work-holder, a toggle devicey connected with said rock-leverrfor control- "ling the 'one of position of--the same, and having its members disposed within the ange' of transverse movement of said sto l'lever whereby the vtoggle is adapted to e fbent upon the. -permitthe opening of the work-holder, and a manually actuated atively"connected withthe stop-lever and a stopping of the machine to controlling device opermember of the ltoggle device whereby a single actuation serves to successively straighten the togvle to close the .clamp and to Shift the stop-lever into inoperative relation with the stopping'cam to permit the `'rotation of the main-shaft for a stitching operation.

' A16. In a sewing machine, the combination with the main-shaft' andv stitch-forming mechanismoperatively connected therewith, and a stop-motion device including a swing- I ing stop-lever, a spring-pressedv boltcarried 'by saidfstop-lever, and a stopping cam upon the main-shaftinto and .out of operative relation with ,whjchsaidl bolt is adapted to be carried by the stop-lever, work-holder, means including a reciprocating rod whereby the work-holder is closed and the stop-lever is shifted to disengageits stop-bolt from the cam, automatically acting me'ans'tor returning the stop-lever to initial position in stopping the machine, means connected with the stop-motion device whereby theiWork-holder` is opened, normally operative connection between the a rockis closed ofa traveling treadle-rod and said. reciprocating rod, and means acting automatically upon said con'- neetion for rendering the same-inoperative at the end of a cycle of operation of the machine. j'

17. In a-sewing machine, the combination with the main-shaft v and stitch-forming mechanism operatively connected therewith,

'and a stop-motion device including a swinging stop-lever, a spring-pressed bolt carried by said stop-lever, a-stopping cam upon the main-shaft, aspring for shitting said stopylever into operative position to carry the stop-bolt into operative relation with the stopping cani, and a latch-lever for niain- .taining said stop-lever in retracted position, of a traveling work-holder, meansincluding areciprocating ro`d whereby the work-holder is clos'edand the stop-lever is shifted to diseiigage its stop-bolt from the cam, a pattern cani provided with a tripping point acting upon said latch -lever to disengage it .'from the stop-lever, means connected with the stop-lever whereby the work-holder is opened, a treadle-rod, a normally operative connection between the treadle-rod and said reciprocating rod, and means controlled by the trippingv` point of the pattern cam for rendering said 4connection inoperative during the release of the stop-lever for stopping the machine.

18. In a sewing machine, the combination with the main-shaft and stitch-forming .mechanism operatively connected therewith',

and a stop-motion device including aswing- 1004 ing vstop-lever, a spring-pressed bolt carried by said stop-lever, a stopping cam upon the main-shaft, a spring for shifting said stoplever into operative position to carry the stop-bolt into operative relation withv the stopping cam, and a latch-lever for inanitaining said stop-lever in vretracted position', of a traveling work-holder, means including a reciprocating rod whereby-the work-holder and the stop-lever is shifted to dis- 110 engage its stop-bolt from the cani, a pattern-cam provided with a tripping point act ing upon said llatch-lever to disengage it` from the stop-lever, means connected with the stoplever whereby the work-holder is 115 opened, treadle-rod, a toggle connection between the treadle-iod and said reciprocating rod, and atrip-lever disposed adjacent said latch-lever and in the path ot' movement of said tripping point and adapted to engagea member of said toggle connection tolatei'ally displace the same as the latch lever is shifted to release the stop-lever in stopping the machine. t

19.V In'a sewing. machine, the combination 125 with the main-shaft and stitch-forming mechanism operatively connected therewith,l

sw ing' carried the main-shaft, a spring for shifting saidy stoplever into operative position to carry the stop-bolt into operative relation with the stopping cam, and a latch-lever for main-l taining said stop-lever in retracted position, of a traveling work-holder, means including a reciprocating rod whereby the Work-holder is closed and the stop-lever is shifted to dis- 'engage its stop-bolt from the cam, a' pattern-cam provided with a tripping point acting upon said latch-lever to disengage it from the stop-lever, means connected withA the stop-lever `vvvliei-ebyj.the work-holder is opened, a treadle-rod, a toggle connection between the ,treadle-rod and said reciprocat' ing rod, a spring'vfor yieldingly retaining the members offthe toggle connection in parallel relationfwith said reciprocating rod, and a trip-lever disposed adjacent said latch-lever and Iin the path of movement of said tripping', point and adapted.- to engage a mem,- ber of vsaid toggle connection to laterally dis-- v place the same in opposition to its retaining spring as the latch-lever is shifted to release the stop-lever in stopping the machine.

20. In a sewing machine, the combination with the main-shaft and stitch-forming mechanism operatively connected therewith, and a stop-motion device including a swinging stop-lever, a spring-pressed bolt carried y by said stop lever, a stopping cam upon the main-shaft, a spring for shifting said stoption of the-same, angle-levers independently 4nectio'n fulcruined and provided with 1am-alarms, land angularly disposed arms\adapted to en-l gage -respectively a member oisaid toggle-"3 the` device for `closing the work-holder an stop-lever for shifting the sameinto' retracted inoperative/positlon," a reciprocating rod., I, 50.,

connected with the lateral arms of said angular levers, a -treadle-rod, a toggle connection'intermediate the treadle-rod and said rel' ciprocating rod,- a pattern-cam provided withl y a trippingpoint acting upon said latch-lever v to disengage itfrom the stop-lever, means' connected with the stop-lever for bending the toggle device to p ermit the o enigvo 'the Work-holder, andatrip-lever 'sposedadja-- cent said latch-levery and in the" path ofV movement of said tripping point 'and `:h .daltnted to entgage la member of saidtoggle con-` o laterally displacethe same as the latch-lever'is shifted tofreleasethestop-lever4 in stopping the machine.

21. Ina sewing machine, thecombination with stitch-forming mechanism, of-atravelv ing work-holder having 'work-clamping jaws v 4 one of which is 'movable toward Land from the other, a rock-lever mounted uponaiixed' fnlcrum and havlng a universal connection with themovable jaw of said work-holden.

means for controlling the position of said rock-lever and comprisinga toggle device including a pair of pivotally connected tog-l gle links one of which is fulcrumed u on a fixed support and the other of which is Y 4l- -crumed upon said rock-lever, and Vmeans for straightening 4and bending said toggle device to close and open the work-holder.

In testimonyvwhereof, I have signed my two subscribinowitnesses.

HARLEs M. HoR'roN. Witnesses: l y

I-I. A. KORNEMANN, Jr. JOSEPH FL JAQUITH.

name to this specification, in the presence of

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