US820678A - Paper-bag machine. - Google Patents

Description

PATBNTED MAY 15, 1906.

W. M. STONE.

PAPER BAG MACHINE.

APPLIOATION FILED JUNE3,1905.

11 SHEETS-SHBET 1.

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No. 820,678. 'PATENTED MAY 15, 1906.

W M'. STONE. PAPER BAG MACHINE.

APPLIUATION FILED JUNE 3.1905.

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Witnesses Inventor:

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No. 820,678- PATENTED MAY 15, 1906.

W; M. STONE. PAPER BAG MACHINE.

APPLIOATION FILED JUNE 3. 1905.

11 SHEETS-SHEET 3.

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' W. M. STONE.

PAPER BAG MACHINE.

APPLIOATION FILED JUNE 3. 1905.

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Witnesses Inventor:

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PATENTED MAY 15, 1906,

W. M. STONE. PAPER BAG MACHINE.

APPLICATION FILED JUNE 3.1905.

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Inventor:

Witnesses umocmwm msmmmu n c PATENTED MAY 15 1906.

W. M. STONE.

PAPER BAG MACHINE.

AP-PLIGATION FILED JUNE 3.1905.

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PATENTED MAY 1.5, 1906.

W. M. STONE. PAPER BAG MACHINE.

APPLICATION FILED JUNE 3.1905.

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Witnesses CZM. WXW WW/@144 PATENTED'M'AY'15, 1906.

W. M. STONE.

PAPER BAG MACHINE.

APPLICATION PILEDJUNE 3.1905.

11 SHEETS-SHEET 10.

[n venfor VViinesses Ciws rgm fl wwz No. 820,678. PATENTED MAY 15, 1906. W. M. STONE.

PAPER BAG MACHINE.

APPLIOATION TILED JUNE 3.1905.

11 SHEETFSHBIIT 11.

Witnesses UNITED STATES PATENT OFFICE.

WILBUR M. STONE, OF NEW YORK, N. Y., ASSIGNOR TO CONTINENTAL PAPER BAG COMPANY, OF TION OF MAINE.

RUMFORD FALLS, MAINE, A CORPORA- PAPER-BAG MACHINE.

Specification of Letters Patent.

Patented May 15, 1906.

To all whom it may concern.-

Be it known that I, WILBUR M. STONE, a citizen of the United States, residing in New York, N. Y. have invented certain new and useful Improvements in Paper Bag Machines, of which the following is a specification.

This invention relates to paperbag machines, and particularly to that class of such machines as are provided for making selfopening square paper bags from tubular paper blanks having an inwardly-folded tuck in each side thereof, respectively.

One embodiment of my invention and which may be the preferred one is illustrated in the drawings accompanying this specification, wherein- Figure 1 represents a side elevation of the machine with that side frame nearer the observer removed. Fig. 2 is a vertical section of the upper part of the machine, taken on line a a of Fi l and looking in the direction of arrow A 11%181'6111. Fig. 3 is a detail plan view of a portion of what is shown in Fig. 1. Fig. 4 is a sectional elevation of the lower part of the machine, taken on line a a of Fig. 1 and looking in the direction of arrow A therein. Fig. 5 is a side view of a detail of the machine. Figs. 6 to 13, inclusive, are a series of diagrammatic side elevations illustrating successive steps in the operation of my improved machine. Figs. 14, 15, and 16 are face views of the bag-blank and flapfolders corresponding, respectively, with the diagrammatic views of Figs. 11, 12, and 13.

Similar characters refer to like parts throughout the several figures of the draw- 1n s.

lVIy improved machine comprises side frames 2 3, in which are mounted the several parts of said machine. Main shaft 4 is mounted for rotation in sleeves 6 7, inreachingfrom and fast to side frames 2 3, respectively, and on said shaft is fixed carrier 5, and whic carrier may be provided with one or more folding-beds, preferably concentric with shaft 4. In the present instance I have chosen to employ two folding-beds 8 9. Mounted on shaft 10 above carrier 5 is folding-roll 11 for successive coaction with the folding-beds of carrier 5 to open out the mouth of the tuckedpaper tube and fold the same into the well-known diamond form.

Shaft 10 is supported for revolution in sleeves 16 17, inreaching from and fast to side frames 2 8, respectively. Shafts 10 and 4 are parallel to each other and are geared together by gear 12 on shaft 4 and gear 14 on shaft 10. In the present case gear 14 is one-half the diameter of gear 12, whereby roll 11 revolves twice for each revolution of carrier 5, said roll thereby being presented for rolling coaction with each successive folding-bed.

Power may be communicated to the machine from any suitable source and preferably through main shaft 4.

Each folding-bed of carrier 5 is provided with side clips, as 18 19 for folding-bed 8 and 28 29 for folding-bed 9. These side clips are provided to grip the lower plies, respectively, of the side tucks to the folding-bed and at points on the bag-blank rearward and adjacent, respectively, to those points where the tuck-folds of the bag-bottom are to commence. Said folding-beds are also each provided with front clips, 13 for folding-bed 8 and 15 for folding-bed 9, to grip the lower ply of the mouth respectively. Each of folding-beds 8 9 is provided with a second pair of side clips 47 47 for folding-bed 8 and 48 48 for foldingbed 9. These side clips are located rearwardly in the direction of travel of the folding-beds of side clips 18 19 and 28 29, respectively and are provided to grip the bagblank after the diamond has been folded and just forward thereon of'the line on which the rear flap is to be folded over.

Side clips 18 19 and 28 29 are actuated by fixed cams 20 21 on the inward ends of sleeves 6 7, respectively. Said side clips are peculiarly mounted and operated, and as such mounting and operating is common toboth pairsv thereof I will describe thesefeatures in connection with one pair of clips only. Under folding-bed 8 and reaching axi ally therefrom is bracket 22 and to which bracket is pivoted two arms 24 25. These arms project in opposite directions from under the folding-bed and at their outer ends are pivoted side clips 18 19, respectively. Side clip 18 has its paper-gripping member 23 extending upwardly from its pivot, and extending outwardly at right angles therefrom is roll member 26, carrying roll 27 for engagement with cam 20. Side clip 18 is of the bag-blank thereto,

urged to its open position by spring 30, one end of which is attached to arm 24 and the other end to member 26 of the side clip. Said. clip is prevented from opening too far by ear 31 thereon engaging pin 32 on arm 24. Side clip 19 is constructed and mounted in all respects similar to the just-described construction and mounting of side clip 18. For holding rolls 27 33 in contact with their respective cams and for withdrawing the paper-engaging members 23 34 below the plane of the face of thefolding-bed spring 35 is provided. This spring is fastened at its opposite ends. to arms 24 25, respectively, so that it tends always to swing those arms downwardly, Fig. 2, on their pivots in bracket 22, also spring 35 is relatively weaker than either of springs 30 or 36, whereby when rolls 2? 33 are urged upwardly, l1 ig. 2, by earns 21, respectively,

arms 24 will be swung upwardly on their pivots in bracket 22 until said arms engage abutments 38 39, respectively, under the folding-bed and at which time the gripper- 1 blades of side clips 18 19, respectively, will be above the race of the folding-beds, and as rolls 27 33 are urged farther upward side clips 18 19 willbe rocked on their respective trunnions and the gripper-blades thereof be moved down into engagement with the folding-bed. As rolls 27 33 run down toward the low parts of cams 2O 21, respectively, this operation will be reversed, the side clips, urged by their respective springs first swinging on their trunnions until they encounter their respective stops, when arms 24 25, urged by spring 35, will swing inwardly from against their respective stops until rolls 27 33 are on the lowest parts of their respective cams and side clips 1.8 19 withdrawn below the plane of the face of the folding-bed. By the use of box-cams instead of face-cams 2O 21 it is obvious that spring 35 may be dispensed with. Without changing the function or operation of the machine. This observationis also true in regard to the other side clips mechanism of my improved machine.

Front clips 13 15 are alike in construction and mode of operation and a description of one will suffice for both. Front clip 13 (shown as comprising two paper-gripping members 41 42) is pivotally mounted at 40 below the face of the folding-bed in carrier 5.

. L Pivot-shaft 40 extends outwardly at one side beyond the folding-bed and has mounted thereon arm 43, carrying roll 44 for engagement with cam 45 for closing said clip 13. Roll 44 is urged to engagement with cam 45 and said front clip opened by spring 46. Front clip 13 may be prevented from opening too far by engaging with heel 37 of the slot in folding-bed 8, through which said clip projects.

Side clips 47 47 and 48 48 are actuated by fixed cams 50 51, and which cams are mounted upon sleeves 6 7, outside and adjacent to cams 20 21, all respectively. Side clips 47 47 and 48 48 are constructed,mounted, and operated in every way similar to the construction, mounting, and operating of side clips 18 19, except that the former are operated by cams 5O 51, while the latter are operated by cams 20 21, respectively.

Folding-roll 1.1 is provided with side clips 52 53 for gripping the upper plies, respectively, of the side tucks to said roll directly opposite to the points at which the lower p ies are gripped to the folding-bed by side clips 18 19, for instance. Side clips 52 53 are constructed, mounted, and operated in every way similar to the construction, mounting, and operating of side clips 18 19 of foldingbed 8 and detail descri tion is therefore unnecessary. Said side c ips 52 53 are operated and actuated by fixed cams 54 55, mounted on the inboard ends of sleeves 16 17, all respectively.

For holding the upper ply of the mouth of thebag-blank to the face of roll 11 I have provided one or more needles 56. These needles are mounted in arm 57 on rock-shaft 58. At the rearward end of said shaft 58, Fig. 1, is fixed arm 59, bearing roll 60 for engagement with cam 61 on frame 2 for withdrawing said needles at the proper time from their operative positions. Said needles may be urged to their operative positions by spring 62. At 63 63 are shown suitable cavi ties in folding-beds 8 9, respectively, for the reception of said needles as roll 11 revolves in successive coaction with said folding-beds.

For forming the main transverse crease in the bag-blank creaser-blade 64 in roll 11 and creaser- grooves 65 and 66 in folding-beds 8 9, respectively, are provided.

On shaft parallel with main shaft 4 and mounted for revolution in suitable bearings in frames 2 3 is the creasing, pasting, and front-finger mechanism. Said mechanism comprises a revoluble frame 67, in which is pivoted front-finger arm 68 on shaft 69. Also to said shaft 69 and at the outboard end thereof is fixed arm 71, carrying roll 72 for engagement with fixed cam 75. Said cam is carried by sleeve 73, inreaching from frame 2. Shaft 70 comprises two members separated at their inboard ends, respectively, (see Fig. 3,) so as to allow room for arm 68 to swing through the path of said shaft. Said arm has pivoted at its free end front finger 74, and said finger is urged to its work, and roll 72 is held in engagement with cam 75 by means of spring 76, one end of which is attached to arm 71 and the other end to sleeve 77 on frame 67. Front finger 74 has a length crosswise of the machine slightly less than the distance of slits 79 80 from each other. Said slits 79 80 are preferably provided in the lower ply ofthe mouth of the bag-blank and lengthwise of said blank to facilitate the formation of the diamond fold. To prevent loo , the diamond is in the tearing at the roots of said slits during the early stages of the formation of the diamond fold, front clip 13 is raised from the bagblank to allow the forward end thereof to rise and to thereby relieve the strain at the roots of said slits 79 80. Front finger 74 is provided to hold said lower ply to the folding-bed during the temporary release of the front clip, and said finger is pivoted to arm 68, so that as saidfinger coacts with the folding-bedthe face of the front finger willlie flat against said folding-bed. Also pivot-shaft 69, on which arm 68 swings, is located from its center of rotation 70 a distance greater than the radius of the pastin segments 81 82, so that proper timing may e had for finger 74 in its coaction with the folding-bed. Also the rearward ends of the folding-beds are cut away at 87 88, respectively, so as to allow room for the passage of the hub in which shaft 69 turns.

Revoluble frame 67 is provided with pasting-segments 81 82 for applying paste to the folded diamond prior to the folding of the end flaps. Also said frame 67 is provided with two creasing-blades 78 83 for coaction with grooves 84 85, all respectively for forming in the folded diamond suitable creases on which to fold over the end flaps. Said frame 67 is revolved in proper time with by means of gear 86 on shaft gear 12 on main shaft 4.

The means provided for folding the flaps of nature of animprovement upon the rear-flap-foldin mechanism of United States patent to Smit No. 807,211, dated December 12,1905, and is as follows:

70 meshing with Mounted in brackets 90 91, inreaching-fromframes 2 3, are shafts 89 92, all respectively. These shafts stand adjacent to the path of the folding-beds and at acute angles thereto Mounted on the inward ends of said shafts are flap-folders 93 94, respectively. Said shafts 89 92 are more inclined to the plane of the folding-bed than are the corresponding shafts of the Smith application referred to, as in the present case the fla folders have additional functions over the ap-folders of Smith and a longer travel in coaction with the folding-bed is required. Furthermore, the present flapfolders 93 94 are somewhat yielding at their outer ends 121 122, respectively, so that in passing, for instance, from the position of ig. 12 to that of Fig. 13 they may yield to make suitable delivery of the folded bagblank to the ironing means. On the outer ends of shafts 89 92 are bevel-gears 95 96, respectively. Shaft 97 is mounted for rotation in side frames 2 3 andhas fixed thereon bevel-gears 98 99, meshing with bevel-gears 9596, respectively. The operating-ed esof flap-folders 93 94 are of peculiar con ormation, and in conjunction therewith said flap-holders are so actuated as to have a vathe folding-b eds' riable rotary motion, whereby they travel at relatively high speed to turn over the rear flap and then at relatively less speed to complete the folding thereof and to fold the front flap and later at still with the folding-bed to deliver the folded bag to the ironing means. Said flap-folders are driven at a variable rotary speed through bevel-gears 95 98 and 96 99, respectively, and shaft 97 by the following means: On main shaft 4 and adjacent to gear 12 is secured gear 100, meshing with gear 101 on shaft 102, set below and parallel with shaft 97. Gear 101 is one-half the size of gear 100, and gears 95, 98, 96, and 99 are all of one size, whereby flap-folders 93 94 will each make one complete revolution for each passing of a folding-bed and cycle ofthe machine. Shaft 102 is supportedfor revolution in bracket 103, secured to frame 2. On the inboard end of shaft 102 is fixed crank-arm 104, bearing crank-pin 105. Said pin engages slot 107 in crank-arm 106 on the end of shaft 97. Thus by a uniform rotary motion of shaft 102 a variable rotary motion is imparted to shaft 97 and to flap-folders 93 94. This motion of shaft 97 is relatively slow as crank-pin traverses that part of its revolution below the plane of its axis 102 and relatively fast as said crank-pin traverses that part of its revo-- lution above the plane of its axis. By these means flap-folders 93 94 are caused to travel at relatively high speed during the early part of their coaction with the rear flap, as 110, of the bag-blank and relatively slower after laying that flap down and while folding the front flap and with decreasing speed while feeding the folded blank under ironing-roll 108. To compensate for the decreasing, but still eX- cessive, speed of revolution of the flap-folders over that of the folding-bed during'the delivery of the folded bag-blank under ironing-roll 108, noses 121 122, respectively, 0fv

said flap-folders are curved so that the edge of each thereof in contact with the bag-blank is at an increasing distance from the axis of rotation of that edge and said point of contact at the same time recedes in the line of its travel, whereby the bag-blank is fed in unison with the folding-bed and delivered without deviation from its normal speed or direction to the ironing and delivery means. This varied movement of the operative edges of folders 93 94 with the folding-bed from first at relatively high speed and then at slower speed and then synchronously therewith may be accomplished by other means than those described and within the scope of my improvements. For instance, instead of a'variable crank-drive a cam-drive may be sub-- stituted.

Ironing-roll 108 is fast on shaft 112 and whichshaft'is supported for rotation in suitable bearings in frames 2 3. Said roll is less speed in unison driven at equal surface speed with the folding-beds by means of gear 113 on ironing-roll shaft 112 and which gear meshes with gear 12 of double its size on main shaft 4. Ironing-roll 108 is provided with a suitable cavity 111%, into which front clips 13 15 successively IO The operation of my improved machine is as follows: The machine bein started, a suitable tucked paper tubular b ank is delivered in proper time onto a folding-bed, as 8, and the lower ply of the forward end thereof is gripped thereto by front clip 13 as roll 44 passes under cam 45, F i 6. Immediately thereafter needles 56 wil? be forced into the forward end of the blank by the rolling together of roll 11 and folding-bed 8. As said roll and bed diverge the lower ply of the bagblank will be led downwardly on said foldingbed by front clip 13, and the upper ply will be led upwardly on roll 11 by needles 56, whereby the mouth of the bag-blank will be opened and the side tucks distended, Fig. 1. This distention of the side tucks provides room for the entrance therein of the side clips of roll 11 and side clips 18 19 of folding-bed 8. Just after passing the plane intersecting shafts 4 and 10 the rolls of side clips 18 19 and 52 53 mount their respective cams, whereby side clips 18 19 swing upwardlywith their supporting-arms 24 25 until said arms impinge against their respective stops 38 39, when the continued rising of rolls 27 33 on cams 20 21, respectively, cause said side clips to swing on their pivots in the outer ends of arms 24 25, respectively, and close down onto the lower plies, respectively, of the bag-blank. At the 1 same time side clips 52 53 swing downwardly and then inwardly to grip the upper plies respectively, of the bagblank to roll 11. The bag-blank mouth is now open suificiently to allow the entrance of front finger 74 therein. Roll 72 forthwith runs off horn 750 of cam 7 5, whereupon arm 68 is swung outwardly on its pivot in revoluble frame 67 by spring 76 and front finger 74 enters the mouth of the bag-blank and engages the lower ply thereof between the roots of slits 79 80 therein, Figs. 3 and 7. Roll 44 of front-clip shaft 40 now runs out from under cam 45, whereupon by means of spring 46 front clip 13 springs up 1 from engagement with the bag-blank and allows the forward end thereof to rise from the folding-bed, Fig. 8, whereby the strain on the paper due to the opening out of the mouth of the ba -blank in the formation of the diamond old is materially relieved. Between the positions of Figs. 7 and 8 the main trans verse crease in the bag-blank is formed by creaser-blade 64 and creaser-groove 65. Directly succeeding the position shown in Fig. 8 needles 56 are retracted from engagement with the upper ply of the bag-mouth by the impinging of r0 1 60 against cam 61. The side tucks are now distended substantially their full amount by the divergence of side clips 18 19 as they turn downwardly .from side clips 52 53 as they turn upwardly around their respective axes of revolution. This causes the sides 117 of the mouth of the bagblank to be drawn inwardly to form the diamond fold and the rearward portion of the diamond to fold backwardly on the line of the main transverse crease 120, Fig. 9. Rolls 115 116 thereupon run off the hlgh spots of their respective cams 54 55, whereby side clips 52 53 open and withdraw radially of roll 11, thus severing the last connection of the bag-blank to sald roll 11 and allowing the ba -blank to be led downwardly on foldingbe 8. As soon as the strain on the roots of slits 79 80 is relieved by the folding down of the diamond fold front clips 13 by the engagement of roll 44 with cam 450 regrip the forward end of the lower ply of the ba mouth, and front finger 74, with its face sti l in contact with the lower ply of the bag-blank, swings on its pivot in the free end of arm 68, ready to pass out of the forward end of the diamond fold. Paste-segments 81 82 having had paste applied thereto by any suitable means, (not shown,) the folded blank now passes downwardly under forward paste-segment 82, and front finger 7 4, still in contact with the bag-blank, retracts within pockets 119 in revoluble frame 67, Fig. 9. Creaserblade 78 and creaser-groove 84 now come into action, forming a crease across the folded blank just in advance of side clips 18 19 and on which crease the front flap is later to be folded. Also paste-segments 81 now apply paste to the blank, Fig. 10. At this time roll 72 runs off high part 705 of cam 75, whereby front finger 74, still with its face in contact with the bag-blank, moves rapidly downward and out of engagement with the bag-blank and then continuing its revolution with frame 67 presently swings back into pockets 119, ready to repeat its operation on a succeeding bag-blank. Creaser 83 and groove 85 now engage the blank and form therein another transverse crease, on which the rear flap is later to be folded. Directly succeeding the operation of creaser 83 the rolls of side clips 47 47 mount high spots 500 510 on cams 50 51, respectively, whereby said side clips are moved outwardly and over onto the diamond-folded bag-blank, gripping the same and all the plies thereof to the folding-bed just forward of the rear flapcrease. This stage of the operation occurs between the positions shown in Figs. 10 and 11. Also at about the same time front clip 13 is released from engagement with the bagblank by roll 44 running out from under cam 450. This allows front flap 111 of the diamond fold to spring up from the folding-bed and the end of said front fiap to pass below rod 109, whereby said front flap is bent backwardly, ready to be folded down over the .18 19 and 47 47.

rear flap. Ironing-roll 108 is efiicient to perform the function of rod 109, as well as to roll down the completed bag; but I preferably employ rod 109 as being somewhat more reliable in action. Thebag-blank is now in the grip of the two pairs of side clips Flap-folders 93 94 now swing inwardly on op osite sides of the folding-bed behind rear flap 110 and at a speed considerably in excess of the speed of the folding-bed. Blades 121 122 now impinge against rear flap 110, Figs. 11 and 14, and turn it over onto the bag-blank bottom. Said blades continue to travel faster than the bag-blank, but at decreasing speed, to the position shown'in Figs. 12 and 15, and at which time their speed has slowed down to nearly that of the bag-blank. Said blades thereupon swing into contact with the backwardly-bent front fla 111 of the bag-blank, and side clips 18 19 re ease their hold. Flapfolding blades 93 94 have their noses 121 122, respectively, cut back, as hereinbefore described, to compensate for the difference in speed of said blades and folding-bed, whereby the operative edges of said blades now travel synchronously with the bag-blank and lead and deliver it into the bite between the folding-bed and ironing-roll 108, Figs. 13 and 16. At the same time flap-folders 93 94 swing outwardly from engagement with the blank, Fig. 16, and continue their revolution around their respective axes to repeat their operations. Directly after the delivery of the folded blank to the ironing means side clips 47 47 open, and the completed bag is de livered over the top of ironing-roll 108.

. I claim 1. The combination of a folding-bed, a lever pivoted thereunder, a side clip pivoted in the free end of the lever and disposed normally below the face of the foldin -bed means to swing the lever on its pivot to ring the side clip into operative position above the face of the folding-bed and to swing the side clip on its pivot to grip a bag-blank to the folding-bed, all combined and operating together substantially as described.

2. The combination of a revoluble foldingbed, a lever pivoted thereunder for revolution therewith and for oscillation substantially normal to the face of the folding-bed, a side clip pivoted in the free end of said lever, a cam to oscillate the lever and to oscillate the side clip to grip a bag-blank to the folding-bed, and means to return the lever and side clip to their inoperative positions respectively, all combined and operating together substantially as described.

3. In a paper-bag machine a revoluble folding-bed, an arm pivoted thereunder and for revolution therewith and having its free end projecting beyond the edge of the folding-bed, a side clip pivoted in the free end of said arm, means to swing the arm to move the side clip into operative position above the face of the folding-bed and to operate the side clip to grip a bag-blank to the foldingbed, all combined and operating together substantially as described.

4. The combination of a folding-bed, a lever 24 pivoted thereunder, a side clip 18 pivoted in the free end of the lever, a cam 20 for oscillating the lever and for swinging the side clip intoengagement with the folding-bed and means to return the side clip to its idle position with respect of the lever, all combined and operating together substantially as described.

5. The combination of a revoluble foldingbed, a pair of levers pivoted thereunder for revolution therewith, a side clip pivoted in the free end of each lever, and means to oscillate the levers to present their respective side clips in operative position and to swing the side clips to grip a bag-blank to the foldingbed, all combined and operating together substantially as described.

6. The combination of a folding-roll, a lever pivoted therein, a side clip pivoted in the free end of the lever, means for oscillatin the lever toward and away from the plane 0 the face of the roll and for oscillating the side clip into and out of engagement with the face of the roll, all combined and operating together substantially as described.

7. The combination of a revoluble foldingbed, means for holding a bag-blank thereon, a revoluble pasting-wheel, a front finger eccentrically pivoted therein, means for moving the front finger into engagement with the bag-blank, and means for timing the foldingbed and the pasting-wheel, all combined and operating together substantially as described.

In a paper-bag machine the combination of means for supporting a bag-blank, a revoluble paste-roll, a front finger pivotally mounted therein and means for moving the front finger into and out of engagement with the bag-blank, all combined and operating together substantially as described.

9. In a paper-bag machine the combination of means for supporting a bag-blank, a revoluble creaser, a front finger pivotally mounted therein and means for moving the front finger into and out of engagement with the bag-blank, all combined and operating together substantially as described.

10. The combination of a revoluble folding-bed means to grip a bag-blank thereto, a rotatable carrier adjacent to the foldin bed a front finger pivoted in said rotatab e carrier, a blade mounted in the free end of the front finger and adapted to present its face in contact with the bag-blank throughout the operation of said front finger, all combined and operating together, substantially as described.

11. The combination of a revoluble folding-bed, means for holding a diamond-folded,

folders so mounted for rotation that their operative edges, during their period of coaction With the folding-bed will travel substantially concentric With the path of said folding-bed and means to move the flap-folders so that their operative edges Will travel first, relatively faster than the folding-bed, then at a decreasing speed and finally at an equal speed with said folding-bed, all combined and operating together substantially as described.

12. The combination of a revoluble folding-bed, means for holding a diamond-folded bag-blank thereon, oppositely-disposed flapfolders, so mounted for rotation that their operative edges, during their period of coaction With the folding-bed Will travel substantially concentric with the path of the folding bed, andmeans to move the flap-folders so that their operative edges Will travel first at a speed relatively faster than the folding-bed, to turn over the rear flap and then at a speed synchronous With the foldin -bed to fold the front flap and to deliver the olded bag to the ironing means, all combined and operating together substantially as described.

Signed at New York, N. Y., this 1st day of June, 1905, in the presence of two subscribing witnesses.

WILBUR M. STONE.

Witnesses OHAs. W. LA RUE, WM. E. MoREYNoLDs.

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