US1808805A - Powder puff sewing machine - Google Patents

Description

June 9, 1931.

R. BIHLEFZ POWDER PUFF SEWING MACHINE Filed Aug. 12, 1926 s She'ets -Sheet 1 INVENTOR Roger Bihler A ORNEYS June 9, 1931. 1,808,805

- POWDER PUFF SEWING MACHINE Filed Aug. 12, 1926 3 Sheets-Sheet 2 INVENTOR Roger Bihgr I BY @M/X ATTORN EYS June 9, 1931. R. BIHLER 7 1,308,305

POWDER PUFF SEWING MACHINE Filed Aug. 12, 1926 3 Sheets-Sheet 3 INVENTOR -&

4 b ATTORNEYS as they are fed to the machine needle in a manner to prevent any relative-movement,

Patented June 9, 1931' UNI ED S A ES TEMP-OFFICE;

noenn. BIHIEZR, or coma-en POINT; NEW YORK, n .Y., Assienon, BYMEsnnAssiGir MENTS To nAnonnr -nonnn 00. me, or coLLEGnPo irr, new YORK, A oonrona- TION OF NEW YORK rowDER PUFF SEWING MACKINE Application filed August 12,1926. Serial No. 128,885.

This invention relates to a machine forv sewing circular multi-ply articles such as powderpuffs, and the prime desideratumbf the invention comprehends the provision of improvements for operating the machine to produce powdercpuffs of high-grade quality and of uniform characteristics on a quantity production scale. q f One oftheprincipal'objects of the ;inven-. tion in carrying out this prime desideratum centers about the provision of an improved work feedingmechanism .designed and constructed for clasping and holding together the multiple plies forming the embryo powderpufi' assembly, and for feeding thesame to be sewed or stitched together in a manner to produceia resulting powderpufi' having theplies united togetherat theirrims to form a uniformly flat and unrufiled pouch and in a manner to prevent any injury toand to maintain the integrity ,ofthe nap ofithe powder puff.- i T As is well known,.powder pufis are manufactured by assembling in. superposed relation nap to nap two plies of a powder puff. 'inaterial cut to circular ,configuratlon and sewing the plies at their, circumferential edges or rims a. distancesomewhat less than the entire rim circumference, leaving an opening through which the embryo pouch formed is turned insideout, afterwhich the pouch so formed is filled and sewed by hand at the aforesaid opening. To produce pow-, der pufi' pouches of neat appearance and uniform characteristics without injuring the delicate fabric or nap of the powder pufi, it-zis desirable to feed the multi-ply powderepufi',

assembly to the machine for sewing the rims thereof by holding the multiple plies together:

or slippage therebetween, such slippage producing a resulting powder puff having a twisted, non-fiat'and unsightly appearance; and it is further desirable in holding such plies together to prevent relative slippage therebetween to minimize anysuch pressure.

on the material that would tend to flatten or injure the nap of the materiaL: To accomv'ention contemplates the provision of an improved work feeding ,device if embodying a means for holding together the plies of the work assembly witha predetermined and uniform pressure 'whichmay be adjusted to suit the character'of the fabric employed and for feeding thework assembly to the machine so form and-consistent results in themaking-ofj the powder -pufi' .by -.quantity production methods, such objectjbeing accomplished by the provision ofm'eans for maintaining uniform; the predetermined pressure exerted on 1 the multi-ply assembly during feeding there-.

of, by the provision o f ffurther means.-forautomatically releasing this pressure, at" a predetermined point in the operationfofthe machine so as to permit quick releasingof the work from the machine, by the provision of further means for automatically releasing. the thread tensioning means of thefmachine when the work is released to permit with drawal ofth'e work assembly and replacement thereof by a newembryo assemblywithout time lag, and by the 'provisionfof vmeans for automatically stoppingthe operations of the machine when the predetermined circumferential amount ofthemulti-ply assembly has been sewed'or'stitched byv the machine. 1 v v To increase. the output or speedof opera it tlOIl' of the machine, the invention further 1 j contemplates the provisionof a work holding device constructed and designed to permit the operator to assemblethereon-new work to be fed .to the; machine Twhile the machine is operating upon workalready fed thereto, and

so as to permit the. quick substitution tothe desideratum; of the invention 'comprehends the provision of a-work holding device associated with the workfeeding apparatus so as to permitthe obtaining of uniform andcon sistent results with the machine operatingat a high output rate. a v

A further principal obJect of the invention' resides "in the provision of improved means for intermittently feeding the Work. assembly injrelation to the machine needle;

and the further provision of such naeans which may be readily adjustably by--the operator to predetermine'the portion of the circumference of the work assembly to be stitched or sewed and to determine this in relation to the different diameters. of-powderpuffs operated upon by the machine; and the still further provisionof mechanism whicl i,

an unskilled operative may readily adjust to A adapt themachinefor powderi puffs of different diameters and different thicknesses and quality of material.

still further object of" the invent-1011 centersaboutthe provision of a machine of r the character referred toin which all the parts'arebrganized' in accordance with simple laws of operation to accomplishthe' mani fold objects ofthe inventionin a simple manner.--, 7' v To the accomplishment of the foregoing and such o'tlienobjects of the invention as Willhereinafter appear, my invention consists' in the "elements and their relationoneto the other. as hereinafter more particularly described and sought'to be defined in -the 1 claims; reference jbeing had-to the accompanying drawings which show the preferred embodiment of myinvention, andin which Fig. 1 is a front elevational 'view'of the machine with parts broken away and other parts shown in section,

- chine,

V Fig. 2is a fragmentary View thereof taken in cross-section in the'plane ofthe line 2-2, Fig.1"; 5 j 7 Fig. 3. is-a viewtakenin cross-section in the plane of the'line 3-3, Fig-2,

Fig. 4 is an end'elevat'on'al view of-the maisa View taken in cross-section in the plane of the'line 5'5, Fig. 1

in thepla ne of the line 66, Fig. 5,v V Fig. is a perspective view ofapowder Fig. 6 is a plan view 'ta'kerrin cross-section puff pouch produced by the operation of the machine, L I V a Fig; 8-is a planflview of part 'of-the work .hol'ding means in the machineQand i Fig. 9 is a fragmentary view of a. deta l;

taken in Crossfsectionin'the plane ofthe line 9+9, Fig.8.

j Before describing the ma'chine embodying the principles ofmy invention 'in detaihI m'ayfirst'briefiy explain byreference to Fig.

1 of the drawingsthat in the operation of the machine the Work W in the form'of'superposed plies 'of mat'erial'is fed to the machine bya wvork feeding means generallydesignated as Which receives the work'from a Work "holder B manipulated by theoperat0r,-' the said Work feeding means A being constructed and designed to holdunder uniform pressure Work assembly and to feed .the circumferential edges thereof into stitching relation withthe machine needle, the said work feeding means A being intermittently-operated by a stitclrproducing" mechanism C operated from the drivemechanism D of the machine.

.The pressure maintained on the Work W-by the Work feeding means A is uniformly produced by-a-cam operated mechanism E con nected to the work feeding means A, and the said-cam operatedjmechanism E is designed the multiple plies of material forming the v ment' thereof by a" new embryo assembly, I

the'invention furbher comprehends a thread tension" releasing mechanism Gr Which is automatically operated to "release the tension on the thread Whenthe'opera'tion of the ma} chine is trippedand "the'pre'slsur'e effective on the "work is. re'leaseid; andfto return the parts to'fo'perating' coiidit'ion there is provided treadle or-[other manuall operated means generallydesignated for: returning the operating mechan'ism D and the Work'feedill-g 11163.113 f0 tll; pfaltihg showndn-Fig; 11ofthe drawin s:

The work;feeding means A comprises in the preferred constructiona rotatable stitchpositions roducing or formi gwork table -10 which V be gradially sermtedas typically hown in gFigs'f Lands of ,the drawings s'othat the work' re'ceived' by the work table may' be effectually gripped there'by, and cooperating Withi th'e work 'table- IO -there is provided a freely rota-table pressure plate 11 movable into andout of engagement Withthe multiple work assembly held 'or clasped between fthe vjvork table' and the' pressureplate, the 1 'diametrical dimensions of both Work table an'dpres'sure plate being' such that the circunr fer'entialedges 'orfi rim of the work assembly 7 W isaeXposed to 5 permit" such; edges to be by a'rr'angin'g' superposed relation nap to nap t wo plies of the" powder puff material cut? to circular configuration, the assembly being centeredf with-respect. to the vwork table and cooperating. pressureiplate. :"Y'I he, work table. 10 is :mounted for intermittent rotation in .a. supporting'p'late 12 securedto the bottom :plate '13 .of the machine stitched; to' geltherfin the operation of the r I machine. As shownitypically in Fig. 5 of the drawings, 1 the gworkj assembly is formed head, the. said supportinguplate 12 being vslidablein the bottom :plate .13 for the purpose of adjusting the position of the work table relat-ive'to the machine needle 14 to accommodate the machine to powder puffs of different diameters, the said slide plate 12 being'secured in adjusted positionby means of the screws 15,15 which are threadedly received by tapped bores in the bottom plate 13 and which are received by elongated slots 16, 16 in the slide plate 12 permitting the desired adjustment of the latter. 1

The pressure plate 11 is mounted rotation on a screw stud 17 which is threadedly attached to an arm 18 movable between elevated and descended positions by means of a pressure plate lifting bar 19 reciprocable in the head 20 of the machine, the said arm 18 being adjustably connected to a bracket 21 by means of the screw 22 secured to the arm and adjustably receivable in an elongated slot 23 in the bracket, the said bracket being in turn attached to the lifting bar 19 by means ofthe securing device 24. The adjustment of the pressure plate 11 afforded by the screw and slot adjustment means 22' 23 is provided for adjusting the pressure plate in correspondence with the'predetermined adjustment of the work table and its slide support to suit or accommodate the different dimensions of powder puffs to be operated upon. As will be pointed outmore in detail hereinafter, the pressure exerted on the pressure plate 11 may be predetermined and is made such asto effectively clamp or hold the plies of thematerial to-' Y gether without breaking or injuring the delicate nap of'the work material and in a manner to permit feeding of the material with: out permitting relative slippage between the plies of theassembly; and by means of the construction described, it will be evident that the intermittent rotation imparted to the work table 10 effects the rotation of the pressure plate 11 and the intermittent feeding of the work held therebetween.

The intermittent operations of the work table 10 are produced by intermittently operating a drive shaft 25 journalled longitudinally in the machine, the work table 10 being connected to the drive shaft 25 by a train of gears comprising, a spur gear 26 keyed to a shaft 27, to which shaft the turntable 10 is fixed, the said spur gear meshing with a gear 28 fixed to a sleeve 29 which in turn revolves on a stud 30, the said sleeve 29 having fixed thereto a spiral gear131meshing with a spiral gear 32 which in turn is loosely keyed as at 33 to the drive shaft 25; This gear system is supported and carried by the slide plate 12, part of the same being held by a 5 gear housing 34 attached to the slidep'late 12 by screws 35, 35, the construction being such that the gear system is movable with V the adjustment of the slide plate 12, the gearing connection being maintained by the loose key 33. The spiral gear 32 is held between for free the slide plate;

opposed abutments 36 formed with the slide plate 12 so as to partake of themovement of The work holding means B comprises a turntable device manipulated by the "opera- 'tive for presenting the assembled plies of I material to the work feeding means A, the

said work holding means being constructed and designed to permit the operator to assemble thereon new workto be'fed to the ma-' chine while the machine is operating on work already fed thereto and soa-s' to permit the quick substitution to the machine of the work assembly for the finished work. This turntable comprises in the preferred construc- 7 tion a hub 37 rotatable about astud shaft 38 as an axis, the latter being adjustably secured within a longitudinal slot in a supporting arm 39 extending from and preferably integral with the bed 40 ofthe machine, this adjustment being'kept commensurate with the adjustment of table 10 on plate 12, and to the hub 37 are secured a plurality, such for example as four, work holding elements 41, 41 each adapted for receiving assembled plies of material and each movable by turntable rotation to position the work assembly on the work table 10, as will be clearly ap parent from a consideration of Figs. 1,5

and 6 of the drawings.

Each ofthe work" olding elements '41 comprises a receptaclehaving a work sup porting rim 41a and a central opening 416 movable over and into registry with thework table 10 to position the assembly thereon; and each of said receptacles is provided with a radial arm 42 secured by means'of the screws 43 to seat portions 44 provided in the turn table hub 37. Desirably as shown in F igs.

8 and 9 of the drawings, each of the receptacles is provided with work centering elements 416, 41e which are eccentrically mounted in the peripheral wall of the receptacle,

diameter of the receptacle to accommodate and center work of varying diametrical dithe said centering elements being adjustable. by rotation to vary the effective holding mensions. Where the turntable is provided with four work holding devices, it will be stitution of a new work assembly for the .understood that a quarter'of a revolution im- ":1 parted to the turntable will eifect the subwork finished by the machine; and to center the workon the work table, the turntable 37 is provided with a centering means consisting of a resilient finger 45 fixed to the arm 39 and mating with notches 46'provided in the turntable hub 37 (see Fig. 1).

With the construction thusfar described,

will be apparent that after the work WV is centered relative to the work table 10 by manip ulation of the turntable B, the pressure plate 11 may be moved to descended position to effect the gripping of the work W between thepressu're plate 11 and the work'table 10,

. the exposed rim orcircumferential edges of the Work being supported by the rim tl-la the Work holding receptacle 41, Which latter senting therim of the Work is held stationary during the intermittent stitch-forming operation of the- WOIk table. For-the purposeof guiding and-neatly pre: assembly to the machine needle, I prefer to sure and guide means in'the foimofa-pres:

sure .foot i? secured means of the screw 24 to the lifting bar l9,-the said pressurefoot 47 being upturned at its advance endAS for guiding the work material into operated-po- V sition. ,Thelvvork holding receptacle. 41 is With the intermittent-stitch-producing.

provided with an orifice or notch-Md With 'whiclii registers a notcht4l7a provided in the pressure. foot 4C7 ,.,both, for clearing themachine needle llpthe coustructionbeing such that the multiple plieswofvthematerial as they are fed between the rim of the Work holding receptacle andthepressure foot are com-' pact-ed to therequired ondesire-d degree, such compacting being localized atthe machine & pressure exerted on thejvvork'r'nay be prede:

terinined to a degree top-revent orinhibit the breaking or injuring ofthe napofthe fabric and becausethe multiple plies are fed infia manner to prevent anyrelati've movementor.

slippage between the plies of the Workoassemblyqi f a. o The'manipulation of the turntable B by the operative permits the-output of the machine to be increased,since the operative may a semble the Work-on one of the receptacles 41 While the other receptacle; is in machine operatingposition and in order to permit [the quicksubstitution to the machine of the new assembly for the finished Work, I providethe means G heretofore referred to, for releasing the thread tensioningf means When the V pressureon the Work assembly-V 1s releasedau' tomatically by means to be described herein after, This means G for releasing-the thread tonsioning means comprises a Wedge-shaped element 49 attachedby meansiof a. screw 50 to the bracketQLthe said Wedge 49%[being adapted tomove between the jaws of the thread tensioning means '51 When the lifting rod 19 is elevated to in turnelevate the pressurev plate 11; By mcansoftlns construction the turntable B may begiven aquiclr quarter-turn,the released thread permitting a quick operation bringing the new W01; assembly:1n centered posit on atthe work provide a: prestable and permitting thereafter the discharge" or removal of the completed work or embryo-f formed pouch from the Work holding turntableB, 1 1

The \vork feeding mama is, as aforesaid, intermittently operated bythejstitc-h producing mechanism C Which comprises clutch means vconnecting a continuously rotated sh aftf52 with the shaft 25 tobe i11t6 1111ltt8t}t ly driven, the said mechanism G embodying, further means for converting the rotary motion of shaft 52to an intermittent motion of: shaft 25, which latter means is constructed so as to be readily adjust'able by an unskilled operator. to vary the length of stitch pro-- duced by the mechanism C. r o .Theclutch of the mechanism comprises a-clutch body,.53 fixed to anextension 25'. of the shaft 25, wvith Which clutchbody co-, operates a pair of clutch feed dogs 54-, 54

received by slot 55, 55 provided ina rocker" arm 56 'oscillatably movable on ,the'shaft '25,

the said clutchz-dogsbl, 5e being-provided with gripfingers 54L-which co-act With the rim 53 of the clutch-body 53 to impart intermittent motion to the clutchbody henthe rocker arm 56' is" oscillated or rocked about its pivot shaft 25,"this being'accomplished by the slight, eccentric positioning of the feed dogs 54, 54 relative to the riin of the clutch body and by the oscillating action imparted tothe feed dogs which results in, the

rim 'offthe clutch body being alternately gripped-"and released during the oscillation oftherockarin 56. The clutch body+53 is also preferably provided with a cover plate-57.

For iconvertingthe rotation 'of shaft 52 into oscillation ofI-the clutch driving rocker 56, there is provided a ball eccentric 58mtating 'Within the ball eccentric strap 59, which latter is connected to a connecting rod 60 threadedly adjustable as at 61 inthe sleeve extension 59 of theeccentric strap ;*andthe said connecting rod 60 isswivelly attached by the wrist pin '62 'to'a connecting'link 63, Which latter can rotate horizontally about a"stud '64' or vertically about a stud 65, the stud: 165 being mounted in the rear end'of thestud 64, theparts being-'securedtogether by securing nuts 66, 66 which are threaded'ly received by the, studs, the: construction being such that the: connectingrod '60 .is fat tachedto .the' v rock arm 56in away topermit universal relative movement between the same, the said rod being in turn attached to the shaft 52 to permituniversal move ment between the same; Y For adjusting or varying the length, of the stitch, the stud 65, is made adjustable; in the rock. arm 56,6and toithisend the-f said stud is adjustably received by'the elongated slot 6'7provided in the -rocker arm hfigzand it vwill beapparent that'adjustinent ofthe studin the rocker arm Will vary the arcuaterthroiv of the,rockerv arm and hence vary the degree of movement imparted to the work feeding device A for each oscillation of the rocker arm. The clutch operating shaft 52 is journalled at its top in a bracket arm 68 fixed to the head 20 of the machine and at its bottom in a journal plate 69 provided with the thrust plate 7 O which engages the thrust collar .71 fixed to the shaft 52, the said shaft deriving motion from a continuously rotated shaft 22 arranged horizontally in the head 20 of the machine by means of the bevel gears 73.

The drive mechanism D for operating the parts of the machine comprises the conventional means for driving the horizontal shaft 72 which includes a pulley 74 fixed to the shaft and a pulley 75 idle thereon, the said pulley 74 bein driven by means of a belt 76 receiving motion from any suitable source of power (not shown), the said belt 76 being shiftable onto the idler 75 when it is desired to stop the operation of the machine parts. The means for shifting the belt 75 may comprise a yoke member 77' embracing part of the strap 76, the said yoke member being attached to one end of a shift lever 7 8 fulcrumed as at 7 9, the said shift lever being normally held in the position shown in Figs.

1 and 1 of the drawings by means of a latch member 80 pivoted on the screw stud 81, the

said latch being provided with a latch finger 82 engaging the upper end of the shift lever 7 8 and holding the same against the tension of a leaf spring 83. With this construction it will be apparent that normally the shift lever 78 is h eld in the position shown to drive the machine parts, and that when the latch lever 89 is tripped, the shift lever 78will be released and will be shifted by force ofthe spring 83 to move or shift the belt 7 6 onto the idler 75.

As heretofore mentioned, a desired object of the invention centers about the provision of means for maintaining the pressure on the pressure plate 11 constant during the operation of the machine, and to this end the cam means E heretofore referred to is provided. This cam means E comprises a cam wheel 84: which is connectedto the shaft 72 to be rotated in the direction of the arrow shown in Fig. 1, the cam being connected to the shaft by means of a gear 85 fixed to the cam shaft meshing with a worm gear 86 fixed to the shaft 7 2, said cam means further including a camfollower 87 which engages and rides under pressure over the rim of the cam wheel 84, the said. cam follower being journalled in a holder 88 fixed to a lever 89, the latter being fulcrumed at 90 on the machine head.

20, the said lever being provided at its advance end 91 with a finger held between a pair of collars 92 fixed to the lifting bar 19 so that movement of the lever 89 about its fulcrum operates the lifting'bar 19. In the operation of the machine the riding of the cam follower 87 on the cam wheel 84 causes a bly is stitched by the machine a predetermined distance about its circumference, and as shown for example in Fig. 7 of the drawings, the stitching is predetermined so as to leave an opening o'in the powder puff pouch through which the powder puff may be turned inside out to be. filled and finished. To predeterminethe portion of the circumference to be sewed, I provide means for automati cally stopping the operation of the machine when the desired point is reached, and such meansheretofore designatedas F. comprises a trip device 94 preferably attached to the cam wheel 84, which trip device cooperates with the bevel end 80 of the latch 80 to trip the said latch when the cam wheel 84 reaches a predetermined point in its travel, the tripping of the latch resulting in shifting the belt 1 76 and stopping the operation of the machine.

As heretofore pointed out, when the oper-' ation of the machine is automatically stopped the pressure exerted on the work assembly is released and the pressure plate 11 elevated,

permitting the withdrawal of'the work from the machine; and to accomplish these results the cam means E is constructed so that when the machine is stopped the pressure plate 11 is automatically elevated. This is accomplis'hed by providing a notch 95 in the'cam 1'05 7 wheel 84 which is adapted to mate with and receive the cam follower 87 to permit actua tion of the lever 89 to elevate the pressure plate. The lever 89 is actuated at such time by its weight combined with the action of a 89 by means of theconnecting link 98." I

returning the lever 97 to the position shown spring 96 anchored so asto exert its force on:

an operating lever 97 connected to the lever in Fig. 1 of the drawings and by returning 7 the shift lever .78 to its normal operating position by means heretofore referredto as the operatingmeans H, which comprises pulley chains or equivalent apparatus 99 at-.

tached to a pedal (not shown )so that when the pedal is operated the motion will be transmitted by the chains 99 to the rear end 97 of the lever97 and to a belLcrank lever lOO ful crumedin the machine, which bell crank. lever is provided with an arm 100 engaging-the shift lever 78 to return the same to the position shown typically in Figs. 1 and 4 of the explained, the operating lever 97 is also latched in the position shown in the drawings, this being effected by means of a latchdrawings to be latched in such position by thelatch device 80.

Preferably and for the reasons now to be lever 101 fulcrumed on the machine on the screw stud 102, the upper end of the lever having a latch finger 101 engaginga tooth 103 provided in the lever 97 (see Figs. 1 and 4:) The latch lever 101 is normally held in its latching position by means of a spring 104. The latching of the lever 97 permits the treadle tobe released while the elevated cam fol1ower87 is still over the cam wheel notch 95 and prior to the pressure engagement of the cam wheel rim with the cam follower 87, and also prevents descending movement of the camfollower'87'into the notch 95 until the ful-lno'tch is beneath the cam follower, at

which time the operation of the machine is predeterminedly stopped. It will be evident that this permitsthepressure to be maintained on the work until the point of stopping the machine, and prevents the pressure at the terminal portion of the workfrom being grad ually released and varied.

The latching of the lever 97 as described necessitates the releasing of the latch when the machine is stopped and this is effected by the'provision of a latch trip arm 105 fixed to the lower arm of the shift lever 7 8 and partaking of the movement thereof, the advance end 105 of the latch trip arm 105 being adaptedto engage a finger'106 fixed to t e latch lever 101 so as to operate the latch lever 101 to the unlatching position permitting the pressure plate elevating operation of the cam means E. a

The use and operation of the machine will in the main be fully apparent from the above detailed description of the mechanism and sequence of operations thereof. It will be further apparent that while I have shown and described my invention in the preferred form, that many changes and modifications may be made in the structure disclosed without departing from the spirit of the invention, defined-in the following claims.

I claim:

1. In a machine for sewing circular multiply articles, a machinehead having a pair of forwardly projecting arms, a rotatable workfeeding work table for receiving assembled plies of material and for stitch-feeding the same to the machine needle, a plate subjacent said Work table for supporting the same and mounted forlongitudinal adjustment along the lower arm of said machine head, a pressure plate movable intoand" out of engage mentwith the, multi-ply assembly for holding thelplies 'of'material together and in eni ga'gement'with the work table to'be rotated thereby, means for adj ustably supporting said pressure plate on said machine head, and

means for intermittently operating the work table in unison with the stitching operations of the needle. e e v I 2. In a machine for sewing circular mult1-' ply articles, a'machine head including an operating shaft, a rotatable work-feeding work table for receiving assembled plies of material and for stitch-feeding thesame' to' the machine needle, a supporting plate for said work table slidably mounted for adjustment on said machine head, gearing sup ported on said plate and connecting the work table with said operating shaft, a pressure: plate movable into and out of engagement with the multi-ply assembly for holding the plies of material together and in engagement with the work table to be rotated thereby, and

gearing supported on said plate and connecting the Work table with the operating shaft to permit of adjustments of said plate, and means for intermittently operating the shaft to actuate the work table in unison with the stitching operations of the needle.

4:. In a machine for sewlng'circular multiply articles, a machine head including an operating shaft, a rotatable work-feeding,

work table for receiving a plurality. of plies of material assembled to be sewed together and for feeding the same to themachine needle, means for adjustably supporting the work table on the machine head, means con necting the work table with said operating 7 shaft while permitting of said adjustment,

and'means for intermittently operating the shaft to actuate the work table in unison with I the stitching operations of the needle;

5. In a machine for sewing circular multi ply articles, a rotatable work table, a work holder for receiving assembled plies of mate rial, said Work holder beingmovable to posi' tion the assembly on the work table and for holding the same so position-ed, a pressure plate movable into and out of engagement with the multi-ply assembly for holding the plies of material together and in engagement with the work table to be rotated thereby, and

means for intermittently operating the work table to effect the operation thereof.

6. In a machine'for sewing circular multiply articlesfa rotatable worktable, a work holder for receiving assembled plies of material, said work holderand support having an opening in its bottom movable over and in: i t

registry with the work table to position the assembly thereon, a pressure plate movable into and out of engagement with the multi-- ply assembly for holding the plies ofma-terial together and in engagement with the work table to be rotated thereby, the said pressure plate being movable to permit the work holder to be moved betweenthe work table and the pressure plate, and means for intermittently operating the work table to effect the operation thereof. I

7; In a machine for sewing-circular multi plyarticles, a work-feeding means including a rotatable feeding mechanism, a work holder for receiving assembled'plies of material,

- said work holder being movable to position.

the assembly in relation to the work feeding means and for holding the same so positioned, and a pressure plate movable into andout of engagement with the multi-ply assembly for holding the plies of material together and'in engagement with the rotatable feeding mechanism to be rotated thereby. V

8. In a machine for sewing circular multiply articles, a rotatable worktable, a work holder for receiving assembled plies of material, said work holder having a work-supporting rim and a central opening movable over and into registry with the Work table to position the assembly thereon, a pressure plate movable'into and out of engagement with the multi-ply assembly for holding the plies of material together and in engagement with the work table to be rotated thereby, said pressure plate having dimensions to expose the rim of the assembly to the machine needle, and means for intermittently operating the work table to thereof.

' 9. In a machine for sewing circular multiply articles, a rotatable work table, a work holder for receiving assembled plies of material, said work holder having a work supporting rim and a central opening movable over and into registry with the work table to i position the assembly thereon, a pressure plateinovable into and out of engagement with the multi-ply assembly for holding the plies of material together and in engagement with the work table to be rotated thereby, said pressure plate having dimensions to expose the rim of the assembly to the machine needle, a' work guide element located above the supporting rim of the workholder for guiding the rim ofthe multi-ply assembly,-and means for intermittently operating the work table to effect the operation thereof, j 10. In a machine for sewing circular multiply articles, a rotatable work table, a turntable having a plurality of work holding ele ments each adapted for receiving assem: bled plies of material and each movable by turntable rotationto positionthe assembly on the work table, a pressure plate movable into and out ofengagement with the so-positioned multi-ply assembly'for holding the effect the operation plies of material together and in engagement with the work table to be rotated thereby,and meansfor intermittently operating the work table to effect the operation thereof.

11.- In a machine for sewing circular multi- 'ply articles, a rotatable work table, a turnintermittently operating the work table to effect the stitch-feed operation thereof.

12. In a machine for sewing circular multiply articles, a work-feeding means including a rotatable feeding mechanism, a turntable having a pluralityof work holding elements 3 each adapted for receiving assembled'plies of material and each movable to position the assembly in relation to the work feeding means, and a pressure plate movable into and out of engagement with the soj-positioned multi-ply assembly for holding the plies of material together and in engagement with, the

rotatable feeding mechanism to be rotated thereby. i

13. In a machine for sewing circularmulti-' ply articles, a rotatable work table, a turntable having a plurality of work holding elements each adapted for receivin' assembled plies of material and each mova le by turntable rotation to position the assembly on the work table, each of said work holding elements comprising a support provided with a central opening for registry with the work table and provided with an orifice for registry with the machine needle, a pressure plate movable into and out of engagement with the so-positioned multi-ply assembly for holding the plies of material together and in engagement with the work table to be rotated thereby, and'means for intermittently operating the work table to effect the operation thereof. V i

14. In a machine for sewing circular multi-ply' articles, a rotatable work table, a turn-- table having a plurality of work holding elements each adapted for receiving assembled plies of material and each movable byturntable rotation to position theassembly onjthe work table, a pressure plate movable into and outfof engagement with the so-positioned 'multi-ply assembly for holding the plies of material together and in engagement with the work table to be rotated thereby,

the pressure plate being movable a distance to clear the turntable and to permit move ment'of -the workholding elements between work table and pressure plate, and means for intermittently operatingthe, work table to effect the operation-thereof. .1". In a "machine for. sewing circular multi-ply; articles, a Cwork feeding means including a rotatable feeding mechanism, aiworkholder for receiving assembled plies of material, said work holder being movable into, and out of relation with said work feeding means to, position the, assembly on the rotatable feeding mechanism, a pressure platemovableiinto and out of engagement with the multi ply assembly for holding the plies of material together and in engagement with the rotatable feeding mechanism, a thread tensioning means and means for releasingthe, thread tensioning meanswhen said pressure plate is moved out of engagement with the assembly. i V r 16. In a machine for sewing circular 'multi-ply articles, a rotatable work table for receiving assembled plies of material, a ro-s tatable pressurejplate movable into and out of engagement with the multi-ply assembly for holding the plies of material together and in engagement with the rotatable work table, a thread tensioningmeans, and means operated inresponseto inovement of the rotatable pressure plate for releasing the thread tensioningineans when said pressure plate is moved outof engagement with the assembly.

- :17 @[In a machine for sewing-circular multi-ply articles, a workfeeding means 1ncludingfa rotatable feeding mechanism, a

work holder for receiving assembled plies of, material, said work holder being movable into out of relation with said work feed ing means to position the assembly on the rotatable feeding mechanism, a pressure plate movable nto'and out of engagement I with the mnltiply assembly for holding the plies of material together and in engagement with the rotatable feeding mechanism,

a thread tensioning means and a wedge connected to the pressure plate for movement therewith for releasing the thread tension ingmeans when saidpressureplate is moved out of engagement with the assembly.

1 8.111 a machine for sewing circular mulany articles, a work feeding means including a rotatable feding mechanism, a turns table having ajplurality of work holding ele n n ts each adapted for receiving assembled plies of material and each movable by turntable rotation a to pOSfilOIl the. assembly in relation to the work feeding means and on .said rotatable feeding mechanisima pressure plate movable intoand out of engagement with the'so positioned assembly for holding the-plies of material together and in engagementwith the rotatabl'effefeding mechanism,a thread tensioning means and means for releasing the thread tensioning means operated-by movement of the pres mosses sure plate out of engagementwith the work assmbly, f i

1 9. In a machine for sewing circular multi-ply articles, a workfeeding meansincluding a rotatable feeding mechanism, a turntable having a, pluralityoffwork holding with the so-positioned assembly for-hold.

ing the plies of material together and in en gagement with the rotatable. feed ng mechanism, a thread tens1on1ng means and automatic means for moving the pressure plate out of engagement with: the work assembly and for simultaneously releasing the thread tensioning means. 7 p

2O. A machine comprisinga work feeding means, a work holder for receiving the work, said work holder being movable into and out of relation with said work feeding means to position. the work with relation thereto, a pressure and guide means cooperating with said work feeding means and movable into and out of engagement with the work assembly, a threadtcnsioning means and means for releasing the'thread tensioningmeans when said pressure and guide means is moved out of engagement with the work.

21. A machine comprising, a workfeeding means, a turntable havinga plurality of Work holding elements each adapted forreceiving the material to be operated upon and each the material in relation to the work feeding means, a pressure and guide means movable into and out of engagement with'the work, a thread tensioning means an d meansv for releasing the thread tensioning means operated by movement of the pressure and guidemeans outof engagement with the work.

22. A sewing machine'cbmprising a work feeding means, a turntable having a plurality of work holding elem'entseach adapted vfor receiving assembled plies of material and each movable by turntable rotation to posi-' tion the assembly in relation to the work feed ing means, a pressure and guide means movable into and out of engagement with the so positioned assemblyffor guiding the plies of material together, a thread tensioning means and meansautomatically operable for moving the pressure and guide means outof engagement with the, Work and for simultaneously releasing the thread tensioning m sf Y i p 23, Ina'mahine for sewingmulti-ply articles',fa sewing machine head,,a work feeding mechanism including a rotatable table and a rotatable pressureplate between which the movable by turntable rotation to position nism in relation to the sewing needle for stitching together the rims of the multi-ply assembly, and means for automaticallyelevating the pressure plate to thereby release the work when a predetermined part of the work assembly has been stitched, said last-mentioned means comprising a pressure plate lifting bar slidable in said head, a lever connected to said liftin bar and ivoted on said head and cam means normall' ClGJI'GSSlIl the 7 l b pressure plate through the lever, but so shaped as to release the pressure plate at the desiredtime. i

24. In a machine of the class described, a

mechanism comprising an intermittently oprotating shaft, a clutch means connected to' the work feeding device, a rocker arm for operating the clutch means to eifect intermittent operation of the work feeding device, and a universally movable rod connecting the rocker arm with said continuously rotating shaft, said rod being adjustable on said rocker arm to adjust the throw of said clutch and hence the size of the stitch;

26. In a machine of the class described, a mechanism compr sing an intermittently operable work feeding device, a continuously rotating shaft, a clutch means connected to the work feeding device, said clutch means provided with clutch gripping dogs, a rocker armzfor oscillating the gripping dogs to ef fect intermittent operation of the work feeding device, and a universally movable rod connecting the rocker arm with said continuously rotating shaft. 1 i

27. In a machine of the class described, a mechanism comprising an intermittently 0perable work feeding device,a continuously rotating shaft, a clutch means connected to the work feeding device, a rocker arm for operating the clutch means to effect intermittent operation of the work feeding device, a universally movable rod connected to the rocker arm, and a ball eccentric connecting the rod with the continuously rotating shaft.

28. In a machine of the class described, 'a mechanism comprising an intermittently operable work feeding device, a continuously rotating shaft, a clutch means connected to the work feeding device, a rocker arm for operating the clutch means to effect intermittent operation of the work feeding device, a universally movable rod connected to the rocker arm, and a ball eccentric connecting the rod. with the continuously rotating shaft,

said rod being'adjustable on said rockerarm to adjust the throw of said'clutch andhence the sizelof. the stitch, r

29. A machine for sewing multi-ply articles comprising, stitch mechanism, work feeding mechanismincluding 'a rotatable table-land rotatable pressure plate between which the plies of the work assemblyare held, a reciprocable pressure bar carrying said pressure plate, a control cam, operating mechanism for actuating the ;stitch mechanism, the :work feeding mechanism, and the control cam, a treadle. for depressing the pressure plate, a follower cooperating with the aforesaidcam forkeeping the pressure'plate in operative position, and means for automatically re leasing the work whenfa predetermined part of; th'erim of the work assembly'has been pitchedaincluding mating means onsaid cam and follower for releasing the-pressure plate. x

: 30. A machine for sewing multi-plyarticles; comprising stitch mechanism, workfeeding 'mechanisnr including a rotatable table and a rotatable PIBSSUI'B IPlatG between which the plies of the work assemblyare held, a re ciprocable pressure bar carr'ylng said pres-- sure plate, a control cam, operating mechanism for. actuating the stitch mechanism, the

work feeding mechanism, and the control cam, a treadle for positively depresslng the pressureplate, latch means for holding'ithe pressure plate in operative .po'sitionf-anol meansfor automatically releasing the work i when'a predetermined part of the rim of the work assembly has been stitched includ j ing trip means on the aforesaid control cam for releasing the latch-means. 1 1

31.. A machine "for sewing multi-p'ly ar-' 'ticles comprising stitch mechanism, work feeding mechanism including. a rotatable table and a rotatable pressure plateibetween which the plies of the work assembly" are held, a reciprocable pressure baricarrying' said pressure plate, a control cam, operating mechanism for actuating the stitch mechanism, the workfeeding mechanism, andi-the control cam, a source of power, treadle means for starting. the machine including '1'15 means to connect the power source and 0peratlng mechanism and to depress thepressure plate, a follower cooperatlng w1th the aforesaid cam for keeping the pressure plate in operative position,and means for automatically stopping the'machine when a pre determined part of the rim of the workassembly has been stitched includingftrip means on the aforesaidcontrolca'm for disconnecting the power source, and mating means'on sa d cam and follower for releasing the pressure plate.

32. A machine for sewing multi-ply articles comprising stitch mechanism, work feeding mechanism including a' rotatable t b e. and a'rotatabl pressure plate between 1O 1 p v- 1,808,805

whichthe plies of the work assembly are held, a reciprocable pressure bar carrying said pressure plate, acontrol cam,'0perating mechanism for actuating the stitch mech- 'ianism, the work feeding mechanism,and the control cam, a drive belt, treadle operated means for starting the machine, including meansto shift the belt and to depressthe pressure plate, means to maintain the machine in operation including latch means for holding the belt shifting means and pres- 7 sure plate in operative position, and means for automatically stopping the machine when a predetermined partof the rim of the work assembly has been stitched including trip means on the aforesaid controlcam for releasing the latch means.

'33. A machine for sewlng multiaply articles com-prising stitch mechanism, 'work' v feeding -mechanism including a rotatable table and a rotatable pressure plate between which the plies of the work assembly are held,

a 'reciprocable pressure bar carrying said pressure plate,a control cam, operating mech- 2 anis'm for actuating the stitch mechanism, the Work feeding mechanism, and the control cam, a drive belt, treadle operated means for 7 starting the machine including means to shift the belt and to depress the pressure plate,

means to maintain the machine in operation including latch means for holding thebelt shifting 'means and'pressure plate in operativeposition, and a follower cooperating with theaforesaid camforkeeping the pres 5 sure plate under desired pressure, and means 1 for automatically stopping the 'machine when a predetermined part of the rimof the workassembly has been stitchedinclud ing trip means on the aforesaid control cam I for releasing'th'e latch means, andmating means on said cam and follower forreleasing thepressure plate.

'7 Signed at College Point, New York in the county of Queens and State of New York this I seventh day of August, A. D, 1926.

ROGER BIHLER.

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