US1026833A - Filled-sack-sewing machine. - Google Patents

Description

G. E. a E. D. SCOTT. FILLED SACK SEWING MACHINE.

APPLICATION FILED FEB.15, 1909.

Patented May 21, 1912.

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G. E. & E. D. SCOTT.

FILLED SACK SEWING MACHINE.

APPLICATION FILED FEBJS, 1909.

1,026,833. Patented May 21, 1912.

` e SHEETS-SHEET 2.

rp j Z 'Z 5 7 ce a G. E. & E. D. SCOTT.

FILLED SACK SEWING MACHINE.

APPLIUATION FILED PEB. 15, 1909.

- 1,626,833, Patented May 21,1912.

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` G. E. & E. D. SCOTT.

FILLED SACK SEWING MACHINE.

APPLICATION FILED P21245, 1909.

1,026,833. Patented `may 21, 1912.

6 SHEETS-SHEET 5.

G. E. & E. D. SCOTT. FILLED SACK SEWING MACHINE.

APPLIoATIoN FILED P21345.V 1909.

Patented May 21, 1912.

6 SHEETS-SHEET 6.

LVM

UNITED STATES PATENT OFFIOE.

GEORGE E. SCOTT ANDEDWAR'D" D. SCOTT, OF CHICAGO, ILLINOIS, ASSIGNORS, BY MESNE ASSIGNMENTS, T0 TIMEWELL SACK FILLING AND SEWING MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

FILLED-SACK-SEWING MACHINE.

Specification of I-.etters Patent.

Patented May 21, 1912.

Application filed February 15, 1909. Serial No. 477,901.

To all whom it may concern.

Be it known that we, Gnoaon E. SCOTT and EDWARD D. Soo'r'r, citizens of the United States, residing in Chicago, in the county of Cook and State ot' Illinois, have invented a new and useful Improvement in Filled- Sack-Sewing Machines, ot' which the following is a specification.

Our invention relates to improvements in filled sacl: sewing machines.

r1"he object of our invention is to provide an automatic, machine of a simple, efficient leommo'date sacks of different lengths or sizes, power driven mechanism for automatically operating the sack conveyer in different positions to which it mayf be adjusted by said adjusting mechanism, a pair of endless flexible sack holder chains furnished with removable clamps or holders for clamping together the mouth edges of sacks of different widths or sizes, means for automatically stopping and starting said'sacl holder chains, guides for supporting and holding the parallel portions of said chains in sack clamping relation to each other, a yielding backing or support for one of said guides, a stop gage for the 'front edge of the sack mouth on one of said sack holder chains to insure the sack mouth being inserted in proper relation 'to cach set of sack holders or clamps on the chains, means for automatically stopping and starting the sack holder chains at. the sack receiving position, means forautomatically starting and stopping the sewing mechanism as each set ot' sack holder clamps onwthc sack holder chains presents a sack into sewing position with the needle of the sewing mechanism and delivers it therefrom, a chain or thread feeder and holder and a chain or thread cutter and means for automatically operating the said feeder and cutter. 1 V V 4Our -invention consists in the various novel combinations and subcombinations of these parts, and in the novel construction of parts and devices and novel combinations of parts and devices herein shown and described, and more particularly specified in the claims.

In the accompanying drawing forming a part of this specification, Figure 1 is a plan view of a filled sack sewing machine embodying our invention. Fig. 2 is a longitudinal vertical section on the broken line f Q-Q of Figfl. Fig. 3 is a vertical cross section on line 3-3 of Fig. 1. Fig. 4 is a horizontal section' on line 4-4 ofFig. 3. Fig. 5 is a detail plan view partly in horizontal section of the sack holder mechanism. Fig. 6 is a detail plan view of a short portion of one of the sack holder chains. Fig. 7 is a detail elevation of a short portion of one of the sack holder chains. Fig. 8 is a detail plan View of the ,sewing mechanism partly in horizontal section. Fig. 9 is a detail plan of' the thread 'feeder of the sewing mechanism. Fig. 10 is a detail vertical section on line 10-10 of Fig. 8 showing the needle and other parts. Fig. 1l is a detail vertical cross section on line 'l1-11 of Fig. 8. Fig. 12 is a detail view of the controlling device and other parts.

'In the accompanying drawing forming a part of this specification, A represents the frame of the machine, it being of any desired construction suitablel for giving .support to and accommodating the Various parts of the machine. It preferably has a bed member A1 resting upon caster Wheels A2 to enable the machine to be readily moved from one part of the factory to another, suitable upriglits A3, cross frame members A4 A, braces A, and al divided top plate AT A8 with a slot or passage a between the two members A'I A of this top plate to accommodate the mouths ofthe sacks to be sewed, and raised connecting bridges A9 to secure the two members of the divided top plate rigidly and firmly together.

B is a vertically adjustable endless flexible sack conveyer, the same preferably comprising a pair of chains b, the links of which are furnished with connecting slats b1 upon which the sacks directly rest. The sack conveyer chains b are. mounted on pulleys or sprocket wheels b2, the shafts 53 of which are ournaled on the conveyer frame B1 which is provided with supporting rails B2 for the ends of the conveyer slats to. rest upon. The sack conveyer or its frame. B1 is automatically adjusted up and down as required to accommodate sacks of different lengths or sizes from the main driving shaft- C through suitable connecting mechanism, the same preferably comprising two upright lifting screws B3, the threads of which turn in suitable nuts or threaded sleeves B4 on the conveyer frame B1, one. on each side of the conveyer frame near the middle thereof, and which 'lifting screws B3 are journaled at their upper and lower ends in suitable bearings B5 on t/he frame of the machine, and which, liftinea screws are provided at their lower ends with worm gears B6 which mesh with worms -B7 on the cross shaft Bs, which is furnished with bevel friction gears B9 adapted to engage a bevel friction ge-ar B10 on a shaft B11, having at its upper end a bevel gear B12 meshing with a bevel gear B13 on the driving shaft C. The worm shaft BS is adapted by a spline B81 to slide in the worms B" to the very slight extent necessary to enable either one of the friction gears B9 vto be thrown into'and out of engagement with the bevel friction gear B1", and thus clutch and unclutch the worm shaft B8 from the shaft B11which connects it with the driving shaft C. The worm shaft B8 isthus reciprocated when required to automatically connect the sack conveyer lifting or adjusting screws with the power shaft by means of a foot lever or treadle B14 the shaft B1s of which has an arm B1 connecting with an armi?? on the sleeve B15, said sleeve and fixed bearing B21 of the shaft B8 bcing furnished with interengaging devices B18 B17, preferably consisting bf a cam slot in one member engaging a pin on the other. The operator by simply pressing his foot on the foot treadle can very quickly connect the lifting screws with the power shaft C either for raising or lowering the sack conveyer, one of the'clntch acting friction gears B1 serving to turn'the worm shaft BB and lifting screws B3 in the direction necessary for raising the sack conveyer` and the other friction clutch acting gear B9 in the direction necessary for lowering the sack eonveyer, according as the treadle B11* is rocked to one side or the other.

The endless flexible sack conveycr B is automatically driven or operated from the driving shaft C through suitable connecting mechanism, preferably comprising a pulley C1 on the driving shaft, belt C2', a pulley G1 on the sewing mechanism sha-ft G2, a worm g on said shaft engaging a work gear b4 on the countershaft b5, which is furnished with a bevel gear L6 engaging a bevel gear b1 'on the cross shaft bs, and which meshes with a bevel gear Zi on the upright shaft Z210, which is furnished with a spline Z111 and sliding bevel gear 612, which meshes with a bevel gear Z213 on shaft Z214 which carries a sprocket wheel L15 connected by chain b1 with a sprocket gearb17 on the shaft b3 of the sack conveyor chain o2.

The endless eXible sack holder chains D D are mounted on horizontal pulleys or sprocket wheels D1 D1 D1 D1 and travel upon the top plate A7 A3, one on each side of the longitudinal slot or passage a so' as to clamp between them the mouth of the sack and hold it in position for sewing as the same is conveyed past the sewing mechanism or needle. The adjacent parallel portions of the sack holder chains D are yieldingly held and guided in sack holding or clam-ping relation to each other by means of guides E E1 between which such adjacent parallel. members of the chains D D pass, and one of these guides E1has a spring or ela'stic bac-king or support, preferably consisting of coiled springs E2, surrounding screws E3 so as to vcanse the sack holder chains to exert a proper but yielding clamping pressure upon the mouth'of the sack held between them.

Each of the sack holder chains B l) is composed of a plurality of links (Z, and these links are provided wit-h removable and sectional sack clamping plates or devices (Z1, one preferably on each link, and removably secured thereto by screws (Z3 so that a greater or less number of these sack holding clamp members or plates may be employed in each .set according to the size or width of the sacks to be from time to time sewed in the machine. llach sack holding link (Z is preferably double, or composed of an upper and lower plate. which receive between them a connecting link (Z4, lpreferably of circular disk form and to which adjacent sucking holding links (l are pivotally' connected by pins.

As illustrated in the drawing, the `sack holder chains are shown as being provided each with two sack holders, each sack holder having a series of twelve sack holding clamp members or plates (Z1, the series of twelve plates representing mouth intended to be sewed. lf the sack mouth is narrower, a less number of clamp members or plates (Z1 are employed in each sack holding set or series of lates, and it' the sack to be sewed has a wider mouth, a

the widthof the sack 35 l sack to abut against, and thus insure the `sack mouth being lnserted 1n a fixed and greater number of sack holding clamp members all are employed for each set or series. The sack holder l lates d1 have corrugated, knurled or roug ened opposing gripping faces d5 to cause them to have a greater gripping action on the fabric of the sack mouth, and the sack holder links d are also preferably furnished with similarly knurled or roughened faces d so that they may also exert a` holding or gripping action upon the sack mouth. Each sackholder chain is also preferably furnished with one or more oblong or plainlinks d" between adjacent sack holding sets or series of links d which carry thel sack holding plates d1. The pulleys 'or 'sprocket wheels D1 for the sack holder chains D are furnished with curved notches Difor engagement with the circular or disk-like links d? of the sack holder chain.

Each of the sack holder plates or clamp members d1 of the chain D is preferably furnished with a notched portion d8 adapted to receive a similarly but reversely notched portion d of the plate of an adjacent link so that the adjacent plates Z1 d1 may overlap each other and thus prevent the sack holder links from tilting one in respect to the other and thereby interfering with the proper gripping or holding action on the sack mouth.

Each set or series of sack holder links (l and clamp members or plates d on one of the sack holder chains D is provided at or near the front end of the series with a gage or stop arm d for the front edge of the proper relation to each sack holder set or series of links on the chains D D, and thus enable the sewing mechanism which is started or set in operation by each sack holder series of links as the same begins to pass the sewing mechanism and thus enable the sewing to begin properly at the front edge of each sack'mouth in the passing sack holder or series of sack holding links.

The front sack holding plates Z1 of each sack holding set or series of links constituting a sack holder are furnished with inclined or cam-like faces d which engages the movable starting device F mounted adjacent to the sack holder chains, and by which the sewing mechanism G is set in operation at the propel' instant. The movable sewing mechanism starting or controlling device F is preferably furnished with a spring f which returns it to normal .position and stops the sewing mechanism after each sack holding series of links or plates d1 pass, the sewing mechanism thus being kept in operation a greater or less time according to the number of plates d1 in each sack holder series of plates and according to the width' of the sack to be sewed.

The sewing mechanism controlling device F preferably stops or starts and controls frame or arm to which the reference letter G is 4particularly applied, and attached to the top plate of the frame at one side of the slot a, and overhanging said slot and the adjacent parallel portions of the sack holder chains, D D, and a needle g1, looper q2 presser foot g8, driving pulley G3, shaft G2,

l and suitable gearing or connecting mechanism for communicating motion to the needle and looper from the shaft Gr2 of the sewi'no' mechanism. The sewing mechanlsm sha G2 receives its motion from the driving shaft C as before stated, through the belt C2 which may be shifted by hand when de sired from the driving pulley G3| to a loose pulley G1 on the shaft G2 by a belt shifter Gls having an operating lever G which the operator may Vactuate with his leg through a lever G7 and yoke GB. The leg yoke Gs is fixed upon the upright rock shaft or pivot G of the lever G7, and said lever carries at its inner end a pin G10 which works in a slot G11 of a guide lever G12 which engages the downwardly bent arm G13 of the bent lever G, and which bent arm G13 of said lever GG-projects in the path of the pin or projection d on the clamp plate d1 of the chain D when said bent lever g stands in the position indicated in dotted lines on Fig. 1, or as more fully shown in Fig. 7.

The operation of the sewing mechanism is controlled or automatically stopped and started as each sack holder set or series of sack holding links on the chains D D approach and leave or pass the sack sewing mechanism by the sewing mechanism con'- trolling or stopping and starting device F before described. The endless flexible sack holder chains D ale automatically operated from the power shaft C through suitable operating or connecting mechanism, the same comprising preferably the means before described for communicating motion to front sack holding links andclanip plates d' all, one of which bears the gage d for the front edge of the sack'to .abut against, approach each other by any suitable connectlng and disconnecting acting' device in the mechanism which communicates motion the loose pulley G1, thus stopping the machine. It is again started by the operator through the belt shifter lever, the same being preferably operated by him with his leg through the yoke G8 on the belt shifter lever. The belt shifterlever is thus preferably operatedby the leg as this leaves theI operators two -hands free for holding and entering the sack mouth between the ,sack holding chains D D. YIf the operator has,` a sack ready forl entering its mouth between the sack holding chains D D, it Will be vfound often unnecessary to stop the sack holding chains D D for entering the sack between them, and in such case he leaves the belt s ifter lever G6 in such position that its depending arm G13 is out of the path of the projection d on the chain D or else, if that is necessary moves the belt shifter lever by means of the yoke so that the projection @X15 on the chain D will not strike or operate the belt shift-er lever to stop the machine.

H is the tread or chain feed or takeup and holding device, the same preferably consisting of a pulley operating' in conjunction with a spring supporting clamp H1 having springs to give a yielding pressure to the clamp H1 against the feed or take up roller H. The feed or take up roller H has a shaft 71.1 furnished with a ratchet h2 which is operated by pawls h3 having spring 71.4 and carried on a lever h5 and connected l by a link it with an eccentric its on one of plates of one of the sack holding chains D,

and thus retracting the knife slide during the sewing operation and permitting the spring to actuate the knife slide after the sewing operation is completed as before state 1. ln a filled sack sewing machine, the combination with a sewing mechanism, of a pair of endless traveling sack holder chains adapted to receive, clamp and holdvthe mouth edges of a Sask between them, and a .Loaaeae 2. In av filled sack sewing 'machine, the

combination with a sewing mechanism, Adevice for controlling the operation of the sewing mechanism, and a pair of opposing endless traveling sackholder chains, one of said chains'having at certain portions thereof only adevice engaging' said controllingdevice, substantially as specified. 3, The combination with a sewing mechanism, of a device for automatically intermittently controlling the operation of the sewing mechanism, and a pair of opposing endless sack holder chains ortions only of which engage said controlling device, substantially as specified.

4. The combination with a sewing mechanism, of opposing endless traveling vsack holder chains, one of said chains having a gage for the front edge of the sack, and means carried by one of these chains for automatically stopping the chains substantially as specified.

5. ln a filled sack sewing machine, the combination with a sewing mechanism, of a pair. of endless opposing sack holding removable sack holding lclamp members or plates, substantially as specified.

' `7. The combination with a sewing mechanism, of a pair of opposing endless flexiblesack holding chains furnished with a plurality of sets or series of removable sack holding clamp members or plates to adapt the chains `for holding sacksof di'erent widths, substantially as specified.

8. The combination with a sewing mechanism, of a'pair of opposing endless flexible sack holding chains furnished with a plurality of sets or series of removable sack holding clamp members to adapt the chains for holding sacks of different widths, each set or series of said clamp member having a gage or stop arm for the front edge of the sack at the front end of the set or series, substantially as specified.

9. rlhe combination with a sewing mecha'- nism, of a pair of opposing endless flexible sackA holdingchains furnished with ar plurality of sets or series of removable sack holding clamp members to adapt the chains for holding sacks of dierent widths, each set or series of said clamp members having a gage or stop arm for the front edge of the sack at the front end ofthe set or series, a controlling device for fthe sewing mechanism, the front sack holding clamp or pla of each set or series having a cam for operating the sewing mechanism controlling device, substantially as specified.

10. The combination with a sewing mechanism, of a pair of opposed' endless flexible sack holder chains intermittently operated, means for automatically stopping the chains and a yielding guide for one of said chains to cause said chainsV to clamp and hold the mouth edges of the sack with a yielding pressure, substantially as specified.

11. In a filled sack sewing machine, the combination with a sewing mechanism, of a pair of intermittently movable opposing endless flexible sack holder chains, and means for automatically stopping the chains, substantially as specified.

12. In a filled sack sewing machine, the combination with a sewing mechanism, of a 4pair of lintermittently movable opposing endless flexible sack holder chains, one of said chains having a gage for the front edge ofthe sack, and means for automatically stopping the chains, substantially as specified.

13. Ina filled sack sewing machine,- the combination with a sewing mechanism, of a pair of intermittently movable opposing endless flexible sack holder chains, one of said chains having a gage for the front edge of the sack, and means for stopping and starting said sack holder chains 1n sack receiving position,'substantially as specified.

14. The combination with a sewlng mechanism, of' a pair of opposing endless flexible sack holder chains, each furnished with-a plurality of sets or series of sack clamping links and removable plates to adapt the machine for operation on bags of different widths, 'substantially as specified.

15. The combination with a sewing mechanism, of a pair of opposing'endless flexible' sack-holder chains, each furnished with a plurality of sets or series of sack clam ing 1links and removable latesv separate by plainlinks, substantial y as specified.

1G. The combination with a sewing mechanism, of a pair of opposing endless flexible sack holder chains, each furnished with a plurality of sets or series of sack clamping links and plates, one of the chains having at. the front o f each of said sets or series a gage for thefront edge of the sack, said gages being spaced apart more than the length of a single link, substantially as specified.

17. The combination with a sewing mechanism, of a pair of opposin endless y flexible sack holder chains, each` urnished witha plurality of sets or series of sack clampingj links and plates, one of the chains having `at the front of each-of said sets or seriesv a age for the front edge of the sack, a contro ling device for the sewing mecha/- nism each of said setsor series having at the front thereof means for actuating said operatinlg sewing mechanism controlling device intermittently,vsubstantially as specified.

.18. In a filled sack sewing machine, the combination with a sewing mechanism, a.

vcontrolling device therefor, a pair of oping chains, and means for intermittently operating said chains, said means comprising mechanism for automatically stopping the chains,I substantially as specified.

20. In a filled sack sewing machine, the combination with a sewing mechanism, of a pair of opposin endless flexible sack holdlng chains, an means for intermittently said chains, said means comprismg lmec the chains, said chains each having a plurality of sets of sack holding links, substantially as specified. v

21. In ayfilled sack sewing machine, the combination with a sewing mechanism, of a pair ofopposing endless Aflexible sack holdlng chains, and means for'intermittently 0perating said chains, said chains each having a plurality of sets of sack holding links provided with removable sack clamping plates, substantially as specified.

22. Ina filled sack sewing machine, the combination with a sewing mechanism, of a pair of opposing endless flexible sack holding chains, and means for intermittently operating said chains, said chains each having a plurality of sets of sack holding links provided with removable sack clamping plates, each set having a gage for the front `edge of the sack mouth, substantially as specified. 23.In a filled sack sewing machine, the combination with a sewing mechanism, of a pair of opposing endless flexible sack holding chains, and means for intermittently operating said chains, said chains each having a pluralit of sets of sack holding links provided wit 1 removable sack clamping plates, and a. controlling devicey for the sewing mechanism, substantially as specified.

24. In a filled sack sewing machine, the combination with a sewing mechanism, of a air'of opposing endless flexible sack holding chains, and means for intermittently operating sald chains, said chains each having a pluralit of sets of sack holding links provided wit removable sackclamping plates,

anism for automatically stopping a controlling device for the sewing mechanism, and means -for actuating said controlling device from Vand by each set of sack anism for raising andpositively lowering the sack conveyer from the power shaft, substantially as specified.

26. In a .filled sack sewing machine, the combination withv a sewing mechanism, of a pair of opposing endless flexible sack holding chains, an endless flexible sack conveyer, a power shaft, connecting` mechanism for operating the sewing mechanism from said power shaft, conecting mechanism for operating said endless flexible sack holding chains from the power shaft, connecting `Il iechanism for'operating the sack` conveyer from the powershaft and connecting mechanism for raising and positively lowering the vsack conveyer from the owershaft and a controlling device for t e sewing mechanism, substantially as specied.

27. In a lilled sack sewing machine, the combination with a sewing mechanism, of a pair of opposin Aendless flexible sack holdmg chains, an e dless'flexible sack conveyer, a power shaft, connectm mechanism for operating the sewing mec anisin' from said power shaft, connectin mechanism for operating! said endless exible sack holding chains from .the power shaft, connecting mechanism for operating the sack conveyer,

from the powershaft, connecting mechanism for raising and positively lowering the sack conveyer from the power shaft and means for sengaging and disengaging the sack conveyer raising and lowerlng mechanism, substantially as specified.

28. Ina filled sack sewing machine, the

- combination' with a sewing mechanism, of a pair of opposing endless flexible sack holdmg chains, an endless flexiblel sack conveyer, a' power shaft, connectin mechanism for operating the sewing mec anism from said power shaft, connectin mechanism.. for'operating said endless exible 'sack holding chains from the power shaft, connecting mechanism for oplerating the sack conveys-r from the power s aft and connecting mechanism` for raising and lowering vthe sack conveyer from the power shaft, and a controlling device for the sewing mechanism, one of said sack holder chains having means for actuating said sewing mechanism .controlling device, substantially as specified.

29. The combination with a sewing mechanism, of a pair of opposing endless flexible sack holder chains, means for intermittently vdriving said chains, an endless flexible sack 30. The combination with a sewing mechl anism, of opposing endless flexible sack holder chains, a power shaft and connecting mechanism` for operating said sack holder chains having a 'disconnecting means, one

of said sack'holder chains having a device for operating said disconnecting means to stop the sack holder chains, substantially as specified.

. 31.v The combination with a sewing mechanism, of opposing endless flexible sack holder chains, one of said chains having a gage for the front end of the sack, means for propelling the chains and means for stopping and starting the chains at the sack receiving position, substantially as specified.

32. The combination with a sewing mechanism, of opposing endlessA traveling sack holder chains, a power shaft and means for automatically operating the chains from the power shaft, means for stopping and starting the chains at the sack receiving position, substantially as specified.

33. In afilled sack sewing machine, the combination Awith a sewing mechanism, of an endless flexible sack conveyer, a power shaft, means for propelling said conveyerl from said power shaft, means for raising and positively lowering said conveyer from the power shaft provided with a disconnecting device and a pair of opposing endless flexible sack holder chains, substantially as specified.

34'. In a filled sack sewin machine, the combination with a power s aft, of a sewing mechanism automatically intermittently operated, an endless traveling sack conveyer,

' raising and lowering mechanism for the sack conveyer, propelling mechanism for the sack conveyer, a pair of opposing endless flexible sack holder. chains, means for propelling said chains, substantially as specified.

35. In a filled sack sewin machine, the combination .with a power s aft, of a sewing mechanism, an endless traveling sack conveyer, raising and lowering mechanism for the sack conveyell adapted to positively lower the sack conveyer, propelling mechanism for the sack conveyer, a pair of opposing endless flexible sack holder chains, means for propelling said chains, and means for connecting and disconnecting said izov conveyer raising and lowering mechanism zvh the power shaft, substantially as specie I Y 36. Inja filled sack sewin machine, the combination with a power s aft, of a sewing mechanism, an endless traveling sack conyeyer, raising and lowering 'mechanism for the sack conveyer, propelling mechanism for the' sack conveyer, a pair of opposing endless flexible sack holder chains, means for propellingsaid chains, means for `connecting and disconnectin said conveyer raising and lowering mec anism with the power shaft, means for propelling said sack holder chains vand means for stopping and starting the sack holder chains at the sack iiexiiving position, substantially as speci- 37. In a filled sack sewing machine, the combination with a powery shaft, of a sewing mechanism, an endless traveling sack conveyer, raising and lowering mechanism for the sack conveyer, propelling mechanismv lfor the sack conveyer, a pair of vopposing endless flexible sack holder chains means for propelling said chains, means ior connecting and disconnecting said conveyer.

raising vand lowerin mechanism with the power shaft, means or propelling said sack holder chains and. means for stopping and starting the sack holder chains at -the sack receiving position, one of said Sack holder chains having a gage for-the front edge of the sack, substantially as specified.

38. The combination with a sewing mechanism, of a pair4 of opposing endless ilexible sack holder chains, each. furnished with a plurality of sets of sack clamping links, means' for propelling the sack holder chains andv means for automatically stoppin sack holder chains in position for receiving Ia sack mouth between the opposing sack clampin links of the chains, substantially as speci ed. v

39. The combination with a sewing mechanism, of 'a pair of opposing endless flexible clamping links of they chains, anV endlessl sack holder chains, each furnishedwith a plurality of sets of sack` clamping links, means for propelling the sack ho der chains,

`means for automatically stopping the sack holder chains in position for receivinga vsack mouth between' the opposing sack clamping links of the chains, and a sack conveyer, substantially 'as specified.' i

40. The combination with a Sewing mechanism, of a pair of opposing endless flexible sack holder chains, each furnished with a plurality of setsJ of sack clam ing links, means for propelling the sack ho der chains,

means for automatically stopping the sack' 'holder chains in position4 for receiving sack mouth between the opposing sac flexible sack conveyer, means for propellin said sack'conveyer and means for automatitheV , chain take up cally raising and lowering said sack conveyer, substantially as specified.

41.l The combination'with a sewing mechanism, of a pair of opposing endless flexible sack holder chains, each furnished with a plurality ofv sets of sack clamping links, means for propelling the sack holder chains, means for automatically stopping the` 'sack -liolder chains in position for receiving a sack mouth between the opposing ,sack clampingA links of the chains, an endless fiexible sack conveyer, means for propelling said sack conveyer, nieansfor automatically raising and lowering saidsack conveyer and a thread chain take u-p and holding device, substantially as specified.

42. The combination with a sewing mecli- 'A anism, of a pairl of opposing endless l'exi.-

ble sack holder chains, each furnished with a plurality of sets of sack clamping links,

means for propelling the sack holder chains, l

means for automatically stopping the sack holder chains in position for receiving a sack mouth between the opposing sack clamping links of the chains, an endless flexible sack 'conveyer, means for propelling said sack conveyer, means for automatically raising and lowering said sack conveyer, a n

'thread chain take up and holding device and a thread chain cutting device, substantially as specified. i

43. The combination with a sewing mechanism, of apair ofopposing endless Hexible-sack holdei` chains, each furnished with a plurality of sets of sack clamping links, means for propelling the sack holder chains,

means for automatically stopping the sackl holder chains in position for receiving a sack mouth between the opposing sack clamping links of the chains and a threadand holding device, substantially as specified. i

44.v The combination with a sewing mechanism, of apair of opposing endless flexible sack holder chains, each furnished with a plurality of sets of sack clamping links, means forpropellin the sack holder chains, means for automatically stopping' the sack holder chains in position for receiving a sack mouth between the opposing sack endless sack holder chains engagstantially as specified.

.of opposing endless sack holderchains provided with a plurality of sets of clamping.

plates engaging 'said controlling device, a thread-chain .cutting device and means on one of the clamping plates for cont-rolling the operation of said threadchain cutting device, substantially as specified.

47. The combination with a sewing mechanism, of a device for controlling the operation ofthe sewing mechanism, a pair of opposing endless sack holder chains en aging said controlling device, athread c ain cutting device having a pin adapted to be engaged by oneY of said sack holder chains for controlling the operation thereof, sub- 48.-In a filled sack sewing machine, the combination with' a sewing. mechanism, of a pair of endless traveling sack holder chains provided with -a plurality of sets of clamping plates adapted to receive, clamp and hold the mouth edges of a sack between them, a movable startingdevice for the seW- ing lmechanisnractuated thereby, a thread chain take up and holding device, a thread chain cutter means on onev of the clamping plates for controlling the operation of vsaid thread chain cutter, substantially as specified. X

49. In a filleds'ack sewing machine, the combination .with a sewing vmechanism, a

device for controlling the operation of the ing said controlling device, a thread chain take up and holding device, a thread chain cutter an ,means for controlling the operation of said thread chain cutter by one of said sack holder chains, Isubsftalrtia-lly as specified. l

51. The combination with a sewing mechanism, lof opposing endless travelin sack holder chains, one of said chains iaving a gage for the front edge of the sack,a l

thread chaintake up and holding device, a thread chain cutter and means for controlling the operation of said thread 'chain cutter by. one of said sack holder chains, substan'tially' as specified.

52. In a Hlled sack Vsewing machine, the

combination `with a sewing mechanism, of a pair of endless opposing sack holding chains, provided with a series of removable sack holding clamp members to adapt the Inachine for operation upon sacks of dienent :remesas anism, of opposing endless flexible sack holder chains having links furnished with removable saclrholding clamp members or plates, a thread chain taleiup and holding device, a thread chain cutter and means for .controlling the operationl of said thread chain cutter by one of said sack holder chains, substantially as specified.

54. Thecombination with a sewing mechanism, `of a pair of opposing endless fiexible sack holding chains furnished with a plurality of sets or series of removable sack holding clamp members or plates to adapt the chains for holding sacks of vdiii'erent widths, a thread chain take up and holding device, a thread chain cutter and means for `controlling the operation of said thread chain cutter by one of said sack holder chains, substantially as specified.

55. The combination with a sewing mechanism, of a pair of opposing endless flexible .sack holdingchains furnished with, a plurality of sets or series of removable sack holding clamp members or plates to adapt the chains` for holding sacks of dillierent widths, each set or series of said clamp members or plates having a gage or stop arm for the front edge of the sack at the front end ofthe set or series, a thread chain take up and holding device, a thread chain cutter andmeans for controlling the operation lof said thread chain cutter by one of said sack holder chains, substantially as specified, l

56. In a filled sack sewing machine, the combination with a sewing mechanism, of a pair of opposing endless sack holder chains, a vertically adjustable and horizontally movable endless flexible sack conveyer, means for raising and positively lowering the sack conveyer, means for propelling the sack conveyer, a driving shaft and means for connecting and disconnect-ing the driving shaft with said conveyer raising and iovering mechanism, substantially as speci- 57.' Ina filled sack 'sewing machine, the combination with a sewing mechanism, of a pair of opposing endless sack holder chains,

an endless fiexible sack conveyer, mechanismfor propelling said'conveyerand mechanism for automatically raising and positively lowering the conveyer, substantially as specified.

58. In a filled sack sewing machine, the combination with a sewing mechanism, of a pair of opposing endless sack holder chains, an endless Hexible sack conveyer, mechanism for propelling said conveyer, mechanism for automatically raising -and osit1'vely lowering the conveyer, a power s aft and means for connectlng and dlsconnectlng said power shaft with the raising and positively lowering mechanism of said sack conveyer, substantially as specified.

59. In a filled, sack sewing machine, the combination'with a sack sewing mechanism,

of a pair of opposing endless sack holder.

chains, a sack conveyer, a power shaft, connecting mechanism for propelling the sack conveyer from the power shaft and connecting mechanism for raising and positively lowering the conveyer from the power shaft, substantially as specified.

60. In a filled sack sewing machine, the

combination with a sack sewing mechanism,

.screw for raising and lowering said conveyer, a power shaft and connectinggearing between the power shaft and lifting screw for operating the lifting screw from the power shaft, substantially as specified.y

62. In a filled sack sewing machine, the combination with a sewing mechanism, of a pair of opposin endless sack holder chains, an endless fleXi le sack conveyer, a lifting screw forraising and lowering said conveyer, a power shaft and connecting gearing between the power shaft and lifting screw for operating the lifting screw from the power shaft, said connecting gearing between the power shaft and lifting screw having means for turning the lifting screw in either direction as required to raise or lower the conveyer, substantially as specified.

63. In a filled sack sewing machine, the combination with a sewing mechanism, of a pair of opposing endless sack holder chains, an endless flexible sack conveyer, a lifting screw for raising and lowering said conveyer, a power shaft, and connectinggearing between the power shaft and llftlng screw for operating the lifting screw from the power shaft, said connecting gearing comprising a friction gear and two movable friction gears, one or the other of which is adapted to be moved into engagement with said first mentioned friction gear according as it is desired to raise or lower the conveyer, substantially as specied.

GEORGE E. SCOTT. EDWARD D. SCOTT.

Witnesses:

H. M. MUNDAY, PEARL ABRAMs.

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