US978850A - Bag-sewing machine. - Google Patents

Description

c. DVOROMLEY. BAG SEWING MACHINE; APPLICATION FILED JUNE 30, 1909.

978,850, Patented Dec. 20, 1910.

Eltlfopnugs THE NORRIS PETERS co., WASHINOTDN, D. C

- G. D. CROMLBY. BAG SEWING MAGHINE.

a SHBETHHEET 2.

' Patented Dec. 20, 1910.

APPLICATION FILED JUNE 30, 1909 summon THE NORRIS PETERS co, WASHINGTON, n. c,

c. D. GROMLEYQ BAG SEWING MACHINE. APPLIOATION FILED JUNE 30, 1909.

Patented I )ec.20,1 91 0.

Wituuozo rus-Nolems'pzrsas 0a., WASHINGTON, n c.

G. D. GROMLBY. BAG SEWING MAGHINIL- 'uruouxoy FILED mu: 30,4009.

97 50 Patented Dec.l20,1910.

A v a anus-hum 4.

a?? I r o 1/6 I n /0 j x 7 [/2 82 ea 0 r #7 1 l 4 a 78 8/ E --J h y/g6) THE NORRIS PETERS co., wnsnmamu, D. c.

G. D. CROMLEY. BAG SEWING MACHINE.

v APPLICATION FILED JUNE 30, 1909.

Patented Dec. 20, 1910 8 BHEETSSHEET 5.

witua/aou cums" 1m: NORRIS PETERS cm, WAsHlnumN, n. c.

G. D. GROMLEY. 4 BAG SEWING MACHINE. APPLIOATION FILED JUNE 30, 1909.

Patented Dc.20,1910.

8 SHEETS-SHEET 8.

(\w-Aq .THE Nouns PEfERS C0 wlsumszon, 0. c4

c'nrrnn STATES PATENT OFFICE.

- CHARLES D. CROMLEY, OF ALAMEDA, CALIFORNIA, ASSIGNOR 'IO AUTOMATIC PACKING COMPANY, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION.

BAG-SEWING MACHINE.

Specification of Letters Patent.

Patented Dec. 20, 1910.

Continuation of application Serial No. 345,764, filed November 30, 1986. This application filed June 30, 1909.

Serial No. 505,270.

To all whom it may concern;

Be it known that I, Ci-mnnns D. CROMLEY, citizen of the United States, residing at Alameda, in the county of Alameda and State of California, have invented certain new and useful Improvements in Bag-Sewing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to mechanisms for closing and sewing the open mouths of filled bags, and is arranged for operation in association with a machine for filling the bags and is a renewal and continuation .of the abandoned application filed November 30, 1906, Serial No. 345,764. r

The object of the invention is to provide in a device of this class an improved sewing machine arranged to operate in conjunction with a bag filling mechanism, and to sew the tops or open ends of the bags before the same are removed from the filling machine.

A further object of the invention is to provide in a device of this class, improved means for raising and lowering the sewing mechanism into and out of contact with the bag passing upon the rotating table.

A further object of the invention is to provide in a device of this class a sewing mechanism of improved construction arranged to sew the rolled upper end of the filled bag with an over and over stitch similar to the stitch produced by hand sewing.

lVith these and other objects in view, the invention comprises certain novel constructions, combinations and arrangements of parts, as will be hereinafter fully described and claimed.

In the drawings :Figure 1 is a view in side elevation of the improved bag filling ma chine, sh owing the relative posit-ion thereon of the sewing mechanism, which forms the subject-matter of this application. Fig. 2 is a top plan view of the device showing the means for transmitting motion to the sewing mechanism and to the rotating table. Fig. 3 is a top plan view of the sewing mechanism. Fig. 4 is a View in side elevation of the sewing mechanism in position for operation upon a bag passing in association therewith. Fig. 5 is a View of the sewing mechanism in end elevation as indicated by arrows 5 upon Figs. 3 and 4. Fig. 6 is a view in side elevation of the means for gripping and rolling the upper edge of a filled bag preparatory to being submitted to the operation of the sewing mechanism. Fig. 7 is a top plan View of the bag rolling mechanism shown in Fig. 6. Fig.8 is a detail top plan view of the bag rolling hook. Fig. 9 is a view in side elevation of the sewing machine with one side removed to exhibit the operating parts. Fig. 10 is a top plan view of the sewing machine with the top plate removed to exhibit the operating parts. Fig. 11 is a detail perspective view of the work engaging portions of the sewing machine. Fig. 12 is a perspective view of the work engaging portions of the sewing machine shown as finishing the seam. Fig. 13 is a top plan view of the work engaging arm, as indicated by arrow 13 of Fig. 9. Fig. 14 is a view in edge elevation of the work engaging arm as indicated by arrow14 of Fig. 13.-

Fig. 15 is a view in end elevation of the work engaging arm as indicated by arrows 15 of Figs. 9,10, 13 and 14. Fig. 16 is a view in side elevation of a completed seam produced by the improved mechanism. Fig. 17 is a top plan view of the feed operating means being similar to the means shown at Fig. 3 with the casing of the sewing machine removed. Fig. 18 is a view inside elevation of the feed operating device with the sewing machine casing removed. Fig. 19 is a view in front elevation of the bag rolling hook.

Like characters of reference designate cor.- responding parts throughout the several views.

The sewing-mechanism, forming the subject-matter of this application, is arranged for operation in association with the bag filling mechanism which forms the subjectmatter of Patent No. 947,096, dated January 18, 1910, and comprises a base 20 upon which is erected a plurality of uprights 21 with a table 22 journaled to rotate within the uprights 21 and in a horizontal plane. Associated with the table 22 is a concentric rack 23, which receives motion from a gear 24 mounted upon a shaft 25, upon which is also mounted a gear 26, receiving motion from a. gear 27 upon a shaft 28. Upon the shaft 28 is carried a gear wheel 29 engaging a. pinion 80 upon a shaft 81 which receives motion through the usual fast and loose pul leys designated as 32.

Journaled also upon the base 20 is a shaft 33 having a pinion 34 engaging a gear carried upon the shaft 28, which said shaft 83 extends substantially across the base 20 and is provided with a beveled gear 36. The bevel gear 36 engages a similar beveled gear 37 carried upon the shaft 38 and by means of beveled gears 39 and 40 motion is transmitted to a vertical shaft 41.

Upon the rotating table 22 are mounted a plurality of sleeves 42 with requisite mechanism for raising and lowering the said sleeves for insertion within a bag, as 48, for filling and provided with bag openers 44 which, while forming no part of the present invention, are intimately associated therewith. Adjaeent each of the sleeves 42 is rigidly mounted a plate 45 upon which are apair of brackets 46 and 47 serving as means for journaling worms 48 and 49, provided at their inner extremities with hooks 50 and 51, respectively, positioned and proportioned to engage the upper corners, as 52, and 53, of the bag 43 hung thereupon and in position so that the top of the bag may be opened by the bag opener 44 descending thereinto, as more fully described in the aforesaid copending patent.

Mounted also upon the plate 45 are bell crank levers 54 and 55 having at their extremities nuts 56 and 57, engaging the worms 48 and 49, and with their other ends connected through means of the levers 58 and 59 connected at 60 and pivoted at 61 and 61, so that the worms 48 and 49 and their associated hooks 50 and 51 rotate in unison, as the levers 54 and 55 are synchronously moved inwardly and outwardly. The movement of the bell crank levers 54 and 55 is accomplished by means of a plunger 62 mounted to reciprocate in a sleeve 63 carried rigidly upon the rotating mechanism by means of a curved rigid arm 64. The plunger 62 is provided at its inner end with a link 65 pivoted thereupon and with its opposite end pivoted as at 66 to an arm 67 connected by means of a shaft 68 through the sleeve 69 with the bell crank lever 55. The plunger 62 carries at its outer end a roller 70 proportioned and positioned to engage within the cam track 71 formed rigid with the frame of the mechanism, as shown particularly in Figs. 1 and 3.

The sewing machine proper consists of a casing 72, and its position relative to the bagging mechanism is particularly shown in Fig. 4. The casing 72 is provided with bearing cars 73 by means of which the casing 72 1s ournaled upon a hor1zontal shaft 74 and is itself journaled in bearings 77 carried upon the frame of the mechanism.

Transversely within the casing 72 is journaled a shaft 78 receiving motion by means of a gear 79 carried rigidly upon and interengaging with a gear 80 carried upon the horizontal shaft 74.

Rigid with the casing 72 is provided an arm 81 having adjacent its extremity an upwardly bowed, arched portion 82 positioned to pass downwardly over the rolled edge 83 of the bag 48. The bowed portion 82 is bifurcated in a vertical plane, as at 84, which bifurcation provides a passage for the needle 85. At the rear end of the bifurcation 84 or the end nearest the casing 72 an upstanding barbed knife 84 is provided. The needle 85 is mounted upon a needle bar 86 mounted to reciprocate within the casing 72 and to extend longitudinally without the said casing, as shown particularly in Figs. 9 and 10. lVithin the casing the needle bar 86 carries a plate 87 having ribs 88 at opposite ends and between which moves a cam 89 mounted rigidly upon the shaft 78, and from which the needle bar 86 and needle 85 receive a longitudinal, reciprocatory move ment. Mounted also within the casing 72 is a frame consisting of uprights 90 and 91 connected rigidly together by means of a cross bar 92 and between the said uprights 90 and 91 moves a cam 93, also mounted rigidly upon the shaft 78. The lower ends of the uprights 90 and 91 are curved, as more particularly shown in Fig. 9, and are pivoted as at 94 and 95 upon arms 96 and 97, carried rigidly upon rock shafts 98 and 99, so that-the movement of the pivot points 94 and 95, under the action of the cam 93, is as indicated by the dotted lines associated therewith in Fig. 9. The upper ends of the uprights 90 and 91 are respectively formed to produce bearings 100 and 101 within which is journaled a shaft 102 so arranged as to permit a rocking movement relative to the bearings 100 and 101, but secured against longitudinal displacement. Rigidly secured to the shaft 102 is an arm 103 having at its lower end a roller 104 engaging within the groove 105 of a cam carried upon the shaft 7 8.

The shaft 102 extends without the casing, 72 and by means of an angle 106 is rigidly connected with an arm 107 carrying the looper. The looper consists of a downwardly extending finger 108 having at its lower end a. peculiarly constructed hooked portion 109. Adjacent the extremity of the arm 81 is positioned a lug 110 having an opening to accommodate and position the needle 85 while operating in conjunction with a looper 109. Upon the extremity of which receives motion by means of bevel j the arm 81 is slidablv mounted a block 111 h, gears (0 and 76, from the vertical shaft 41, I having an opening to receive and accommodate the needle and rigidly connected with a curved arm 112. The block 111 is slidable longitudinally upon the extremity of the arm 81 in guide-ways 113, and a longitudinal, reciprocatony movement is imparted thereto by means of a lever 11%, pivoted as at 115 and connected by means of another lever 116 with a bar 117 pivoted to the bracket 77 above the shaft 7t.

The casing 72 and sewing mechanism therein are raised and lowered into and out of contact with the rolled edge 83 of the bag as and to pass over the mechanical parts associated therewith by means of a rod 118 pivoted to the casing, as at 119, and provided with a telescoping arrangement shown conventionally by the threaded section and adjusting nuts 120 by which the length of the rod 118 is varied. The rod 118 at its lower end is pivoted as at 121 to a bell crank lever 122, pivoted as at 123 to a bracket 12% and having a roller 125 in engagement with a cam 126 carried upon and rotating with the rotating table and adjacent to the circular rack 23.. It will be understood that the bag 43 is moving upon the table 22 in relation to the sewing mechanism and that the necessary speed for spacing the stitches is thereby produced. The rotating table however is constantl movin and 7 7 b provision must be made for a slight move-., ment of the mechanlsm therewith so that the needle 85 is not broken by the continued movement of the bag relative to a rigid structure. The movement is accomplished by means of a cam 127 carried upon the shaft 78, within the casing 72, and engaging a roller 128 carried upon a rod 129 extending upwardly within the casing, and whereby the casing is moved angularly at each stitch upon the shaft 11, upon which the mechanism is pivoted to move in a horizontal plane. The feeding movement of the casing and its inclo-sed mechanism is accomplished by means of a lever 130 pivoted to the frame as at 131, and provided with means for engaging a cam groove in wheel 132 carried upon shaft 133 and receiving motion from a worm 134: upon the shaft 11, and through the medium of a gear 135 intel-engaging with the said worm and rigid with the shaft 133 so that the wheel, 1 32,

moves in timed relation with the shaft 11. At its upper end the lever 130 is pivotally connected with a link 136 having its opposite end pivoted as at 137 to an arm 138 which in turn is pivoted at 138 tothe plate 139 rigid with the column 21. The bar 129 is rigidly connected with the link 136 and extends upwardly into the casing 72 so that movement is imparted to the casing by the action of the cam 127 upon the said bar 129. At any convenient point, as upon the casing 72, is mounted a spool 139, and a thread 140 taken therefrom is carried over and through the usual tension and eyes to the needle In operation a bag is hung upon the hooks 50 and 51 by an operator, by simply turning the edge of the corners of the bag over the hooks thereby producing an opening of small dimensions between the opposite sides of the bag. The bag opener 4 1 then descendsinto the upper edge of the bag in the manner described in the co-pending application and the bag is twisted firmly thereupon by means of worms 48 and 4:9 and by reason of the proper curvature in the track 71. When the bag has been filled by the mechanism describedin the co-pending application, the bag openers are withdrawn and a further twisting of the top of the bag accomplished by another curva ture in the track 71 whereby the top of the bag is rolled, as indicated in Figs. 4, 12 and 16. Then the bag is rotated to the proper position the arm 81 of the sewing mechanism is dropped over the rolled edge 83 by means of the bell crank lever 122. The arm 81 having been dropped over the roll 83 so that the bowed portion 82 embraces the said roll the needle 85 is reciprocated by means of the cam 89 so that it is inserted slot of the cam 132. The looper meantime is lifted and moved over the roll and by means of the cam groove 105 is moved angularly so that the hook 109 engages within the loop of the thread upon the far side of the bowed portion 82. The movable block 111 meantime is positioned, as shown in Figs. 9, 10 and 11, and the point of the needle enters the opening of the said block. The rotary movement of the shaft 102 causes the looper hook 109 to engage the loop of thread upon the far side of the bag, as aforesaid, and the movement imparted to the arm 107 by means of the rock shafts 98 and 99 lifts the looper over the bowed portion 82 into the position shown in Figs. 11 and 12. lVhile the looper is being returned to the position shown the needle is withdrawn and the looper holds the loop of thread in position for the needle to be inserted therethrough upon its return stroke before the looper is again moved angularly to disengage the hook from such loop and to be returned over the bowed portion 82 to the far side to again engage the loop fro-m that side. In the meantime by means of the cam 127 and the bar 129, the casing 72 and its associated parts have moved slightly in unison with the movement of the bag and upon the withdrawal of the needle from its insertion through the bag the casing and associated parts are again moved by the cam so that the thread drawn by the needle assumes an oblique position upon the roll of the bag as shown in Figs. 12 and 10. At the end of the roll, the operation of forming the first ear is repeated, several stitches, preferably 3, being formed about the ear, the last one being inserted through the ear, the mechanism is lifted by the rod 118 and its associated parts, as shown in Fig. 12, and the arm 112 is drawn back thereby drawing the block 111 adjacent the curvature 82 so that when the needle 85 passes through the bifurcation it enters immediately into the opening of the block 111 and the looper 108, after passing over th curvature strikes upon the block 111 and does not take up the loop, so that while the needle is reciprocating between bags no stitches are formed and no thread is used. The lifting of the arm 81 causes the thread to engage upon the knife edge 84f whereby the thread is cut and the looper disengaged. The thread of the loop being cut by the knife ec ge Set and still retained by the needle is drawn into the spring catch 8%, and is thereby held until another is encountered, and the block 111 moved so that the looper engages the loop of the thread upon the side of the arch opposite and held by the spring catch 8 1 when the movement of the bag draws the thread from out of said *ateh. As soon as the sewing upon the bag is completed the curvature of the track 71 returns the bell crank levers 54 and 55 to the position shown in Fig. 7 whereby the ends of the bag are disengaged from the hooks 50 and 51 and the bag completely sewed is removed from the rotating table by an attendant.

As shown particularly in Figs. 1 and 2', the rotating table is preferably provided with eight of the bagging mechanisms which also include eight individual sets of the bag openers and twisters which forma part of the said bagging mechanism, and also form a part of the sewing mechanism, as by their employment the bag is properly rolled,-

held and presented to the operation of the sewing mechanism proper.

Vhat I claim is 1. In a device of the class described, a rotating table, means carried by the table for engaging a bag, means for rotatably moving the bag engaging means, and a sewing mechanism arranged to operate upon a bag engaged by the bag holding mechanism.

2. In a device of the class described. a frame, a table mounted to rotate upon the frame, bag holding means carried by the table, means for rotating the bag holders, a sewing mechanism carried by the frame, and means to operate the sewing mechanism in conjunction with the bag holding means.

3. In a device of the class described, a f mm, a table mounted to rotate upon the frame, hooks carried by the table and proportioned to engage a bag, means for rotating the hooks, a sewing mechanism carried upon the frame, and means to operate the sewing mechanism in conjunction with the hooks.

4. In a device of the class described, a frame, a table mounted to rotate upon the frame, hooks carried by the table proportioned to engage a bag, means carried by the table and arranged to rotate the hooks, a cam positioned upon the frame and pro portioned to actuate the hook operating mechanism, and a sewing mechanism carried by the frame and in position for operation in con unction with the hooks.

5. In a device of the class described, a frame, a continuously rotating table, means carried by the table for engaging a bag, a casing carried by the frame, an arm carried by the casing and positioned to engage a bag while being carried by the table, a needle carried by the casing and arranged to operate in conjunction with the arm, and means for transmitting motion from the rotating table to the needle.

6. In a device of the class described, a rotating table, means carried by the table for engaging and rolling the end of a bag, a casing pivotally mounted upon the frame, an arm carried by the casing and proportioned to engage the rolled edge of the bag, means for moving the casing and arm angnlarly to throw the arm into and out of engagement with the bag, a needle carried by the casing and positioned for operation in. conjunction with the arm, and means for transmitting motion from the rotating table to the needle.

7. In a device of the class described, a rotating table, means carried by the table for engaging and rolling the end of a bag, a shaft receiving motion from the rotating table, a casing pivotally mounted upon the shaft, an arm rigid with the casing and proportioned to engage the rolled edge of the bag, a needle mounted in the casing and to reciprocate in conjunction with the arm, and means within the casing for transmitting movement from the shaft to the needle.

8. In a device of the class described, a frame, a table. mounted to rotate upon the frame, hooks carried by the table and proportioned to engage the edge of a bag, means for moving the hooks rotatably to roll the edge of a bag, a shaft journaled upon the frame, means transmitting movement from the rotatingtable to the shaft, a casing positioned upon the shaft, an arm carried rigidly by the casing and proportioned to engage the rolled edge of the bag, a needle mounted to reciprocate within the casing and in conjunction with the arm, and

means Within the casing for transmitting motion from the shaft to the needle.

9. In a device of the class described, a casing, an arm carried rigidly by the casing, and provided with an arched portion, a needle bar mounted to reciprocate within and extending without the casing, a needle carried by the needle bar and positioned to reciprocate longitudinally across the base of the arched portion, an arm carried by the casing, a looper carried by the arm, and means within the casing engaging the arm and arranged to move the looper in an are above the arched portion, and means within the casing for moving the looper to cooperate with the needle upon both sides of the arched portion.

10. In a device of the class described, a casing, an arm carried rigidly by the casing, and having adjacent its extremity a bifurcated arched portion, a needle bar mounted to reciprocate within and extending without the casing, a needle carried by the needle bar and positioned to reciprocate longitudinally through the bifurcation of the arched portion, an arm, a looper carried by the arm, means within the casing engaging the arm and arranged to move the looper in an are above the arched portion, and means within the casing for moving the arm rotatably to move the looper into and out of engagement with the needle upon opposite sides of the arched portion.

11. In a device of the class described, a casing, an arm carried rigidly by the casing and provided with an arched portion, a needle bar mounted to reciprocate within and extending without the casing, a frame mounted to swing within the casing, a rod journaled within the frame, an arm carried by the rod without the casing, a looper carried by the arm, means within the casing for moving the frame to move the looper in an are above the arched portion, and means within the casing arranged to move the bar rotatably to move the looper into and out of engagement with the loop upon opposite sides of the arched portion.

12. In a device of the class described, a casing, an arm carried rigidly by the casing, and provided with an upwardly bowed, bi furcated arched portion, a needle bar mounted to reciprocate within and extending without the casing,,a needle carried by the needle bar and positioned to reciprocate longitudinally through the bifurcation of the arched portion, a plurality of rock bars journaled within the casing, arms carried by the rock bars and movable in dissimilar arcs, a frame pivotally mounted upon and movable with the arms, in an eccentric path, means within the casing for moving the frame and rock bars, a shaft journaled upon the frame and extending without the casing, an arm carried by the shaft, a looper carried by the arm, and means within the casing for moving the shaft and its associated arm and looper rotatably.

18. In a device of the class described, a casing, a positively driven shaft extending transversely through the casing, an arm carried rigidly by the casing provided with an upwardly bowed, bifurcated, arched portion, a needle bar mounted to reciprocate longitudinally within and extending without the casing, a needle carried by the needle bar and positioned to reciprocate longitudinally through the bifurcation of the arched portion, a cam carried by the positively driven shaft and arranged to impart reciprocatory movement to the needle bar, rock shafts journaled transversely within the casing, arms carried rigidly by the rock shafts, a frame pivotally mounted upon the extremities of the arms, a shaft journaled upon the frame and extending without the casing, an arm carried rigidly by the shaft, a looper carried at the extremity of the arm, a cam within the casing carried by the positively driven shaft, engaging the frame and arranged to move the looper in an are above the arched portion, a cam carried by the positively driven shaft within the casing, an arm rigidly connected with the shaft journaled upon the frame, and arranged to move the shaft and arm rotatably, and the looper into and out of engagement with the needle loop upon opposite sides of the arched portion.

14. In a device of the class described, a rotating table, means carried by the table for engaging and carrying a bag, mechanism disposed for operatlon upon the bag while the bag is in motion, and embodying a needle, and means for moving the sewing mechanism in unison with the bag while the needle is inserted through the bag structure.

15. In a device of the class described, a frame, a table mounted to rotate upon the frame, spaced brackets carried by the frame, worms journaled in the brackets, nuts mounted to reciprocate simultaneously in opposite directions upon the worms, means to move the nuts, a sewing mechanism car ried by the frame, and means actuated by the rotating table for raising and lowering the sewing mechanism.

16. In a device of the class described, a frame, a rotating table, carried by the frame, spaced brackets carried by the rotating table, worms ournaled upon the brackets, bag engaging hooks carried by the worms, nuts mounted to reciprocate simultaneously upon the worms in opposite directions, means to move the nuts, a sewing mechanism pivotally mounted upon the frame, a cam carried by the rotating table, and means engaging a sewing the cam and arranged to more the sewing meel mism angularly upon its pivot.

1?. in a bag sewing machine, a frame, a rotating table, hooks carried by the table proportioned to engage opposite corners of a bag, means to rotate the hooks simultaneously in the same direction, and a sewing mechanism carried by the frame and positioned for ope 'ation between the hooks.

18. In a bag sewing mechanism, a frame, a. rotating bag carrying table, spaced hooks proportioned to engage opposite corners of a ag, means for rotating the hooks simultaneously in the same direction, a sewing mechanism carried by the frame, and means operated by the rotating table to lower the se ing mechanism into operative position between the hooks and to raise it out of op-- erative position.

19. In a bag sewing machine, a frame, a rotating table, spaced hooks proportioned to engage corners of a bag, and means for retating the hooks simultaneously in the same direction, to roll. the edge of the bag, a sew ing mechanism embodying an arm provided with an arched portion proportioned to embrace the rolled edge of the bag, a me dle positioned to reciprocate longitudinally through the ba structure below the roll, and

means to engage the thread upon the opposite side of the arched portion, and to draw the thread over the rolled edge of the bag.

20. In a device of the class described, means for rolling the upper edge of a bag, a sewing mechanism comprising an arm, having an arched portion proportioned to embrace the rolled edge of a bag, a needle mounted to reciprocate longitudinally through the base of the arched portion, a looper arranged to engage the thread upon the opposite side of the arched portion, and to draw it over the rolled edge of a bag into position for engagement by the needle, and means to disengage the looper from the said thread.

21. In a bag sewing mechanism, means to roll the upper edge of a bag, a sewing mechanism comprising an arm having an arched portion, positioned to embrace the rolled edge, means to more the arm into operative position relative to the edge of the bag, and means to more the arm out of engagement with the bag, while the sewing mechanism in operation.

In testimony whereof I atlix my signature in presence of two witnesses.

CHARLES D. CROMLEY.

Vitnesses AXNE F. Has'rr, I'IALLY J. Case.

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