US2115282A

US2115282A - Apparatus for use in connection with the making of bags

Info

Publication number: US2115282A
Application number: US746083A
Authority: US
Inventors: Potdevin Adolph
Original assignee: Potdevin Machine Co
Current assignee: Potdevin Machine Co
Priority date: 1932-04-22
Filing date: 1934-09-29
Publication date: 1938-04-26
Anticipated expiration: 1955-04-26

Description

A. POTDEVIN 2,115,282

APPARATUS FOR USE IN CONNECTION WITH THE MAKING OF BAGS April 26, 1938.

Original Filed April 22, 1932 4 Sheets-Sheet l INVENTOR y M ATTORNEYS 1 BY 42 m APPARATUS FOR USE IN CONNECTION WITH THE MAKING OF BAGS A. POTDEVIN April 26, 1938.

Original Filed April 22, 1952 4 Sheets-Sheet 2 INVENTOR MM ATTORNEYS A. POTDEVIN April 26, 1938.

APPARATUS FOR USE IN CONNECTION WITH THE MAKING OF BAGS Original Filed April 22, 1952 4 Sheets-Sheet s INVENTOR M m ATTORNEY April 26, 1938. POTDEVlN 2,115,282

APPARATUS FOR USE IN CONNECTION WITH THE MAKING OF BAGS Original Filed April 22, 1932 4 Sheets-Sheet 4 ATTORN EY 'Patented Apr. 26, 1938 APPARATUS FOR USE IN CONNECTION WETH TEE MAKING OF BAGS Adolph Potdevin, Garden City, N. .Y., assignor to Potdevin Machine Company, corporation of New York Brooklyn, N. Y., a

Original application April 22, 1932, Serial No.

606,839. Divided and this application September 29, 1934, Serial No. 746 083 5 Claims.

This invention is directed to an improved apparatus for use in connection with the making of paper bags, being primarily directed to an apparatus for folding a paper tape over the ends of a bag and stitching the same in place, the tape being supplied in a. continuous strip from a supply roll and advanced successively to an aplparatus for sewing the tape along the ends of the ag. ti In the drawings accompanying this applica- Fig. 1 is a side elevational view of my improved apparatus;

Fig. 2 is an end view of the apparatus substantialy along the line 2-2 of Fig. 1;

Fig. 3 is a plan view;

Fig. 4 is a detail of one of the pushers employed for advancing the bag to the sewing apparatus;

Fig. 5 is a detail of the folding apparatus for the paper tape;

Fig. 6 is a section on the line G6 of Fig. 7;

Fig. 7-15 a plan view of the apparatus of Fig. 5;

Fig. 8 is a detail of the cutting mechanism;

Fig. 9 is a view substantially on the line 9-9 of Fi 3;

Fig. 10 is a view substantially on the line I0I0 of Fig. 3;

Fig. 11 is another view of the cutting mechanism; and

Fig. 12 is a plan view of the bags with paper strips sewn across the ends thereof.

Referring to the drawings in detail: The machine of this invention comprises a feed table I elevated at a convenient distance above the floor, the bags being advanced successively along this table to a pair of sewing machines intermediate the ends of the machine. These sewing machines are'well known commercial apparatus and will v not be described in any detail. They are designated 2 and 3 on the drawings.

The paper tape which I fold over and stitch to each end of the bag is taken from rolls 4 and 5 at opposite sides of the machine and the thread employed forsewing this tape to the bags is taken from bobbins Ii and 'I also at opposite sides of the machine. Pivoted to the bottom of the frame 8 of the machine are vertically extending pusher arms 9.- Two or more of these arms are provided and the arms are adjustably aflixed to a rock shaft I0 mounted in the lower part of the machineframe. Y

The table I of the machine is slotted longitudinally as shown at II and I2, for instance, in Fig. 3, and on the upper ends of each of the pusher arms 9 is pivoted a pusher I3 which under certain conditions projects above the top of the table through the slots above mentlo'ned- Each of these pushers is provided at its rear end with a spring I4, the lower end of this spring being attached to a pin IS on the pusher arm.

Each pusher is provided with a roller I6 at its forward end, these rollers riding alongthe underside of the table i of the machine on movement of the pushers to the left, or in a-forward direction, as viewed in Figs. 1 and 4, for instance.

Near the end of their travel the rollers I6 engage the forward end of a rail I'I resiliently mounted below the table I. The rail is held in its upward position as shown in full lines in Fig. 4, for instance, by spring I8. On reversal of the pushers-after they reach the limit of their forward movement, the rollers I6 ride along the underside of the rail I1 so as to retract the pushers out of the slots I I and I2 entirely, the pushers pivoting to their original position, however, under the action of the springs I4 as soon as they ride ed the rear or tail end of the rail I'l so that on the next forward movement of the pushers the rollers will travel along the upper side of the rail with the pushers projecting through the slots II and I2 as before.

The rocker rod It carrying the pusher arms 9 is rocked through the medium of an arm the lower end of which is fast to the shaft I0. A link 2| is adjustably secured to the upper end of the arm 20 by a slot and bolt connection 22 and 23, the other end of this link being attached to crank 24. The drive for the crank 24 will be referred to hereinafter.

The adjustable connection of the link 2I to the arm 20 enables the travel or throw of the pushers i3 to be varied so as to accommodate the machine to bags of different widths, it being appreciated that the bags are fed forward to the sewing machines laterally as distinguished from lengthwise.

As the bags are advanced by the pushers I3 they pass under hold-down plates 25 adjustably mounted, as will be brought out hereinafter.

At each side of the machine I provide means for applying paper tape to the ends of the bag, the tape being stitched to the bag ends as the bags progress through the machine.

The paper taper, as has already been mentioned, is taken from supplyrolls 4 and 5 which are mounted on suitable standards at each side of the. machine. Each tape asit passes into the machine travels over the face of a gluing roller 28 where glue is applied to the edge of the paper as shown in Fig. 2, for example, the paper tape being designated 21 and the adhesive 28; After each of the paper tapes receives its coating of adhesive it passes around a roller 29 set at an angle of 90 to the plane of the paper and from thence the paper tape passes into a troughshaped folding member 30, this member, as seen in Fig. '7 for instance, gradually decreasing in width until at the discharge end thereof it is just about the width of a double thickness of the tape and the thickness of the bag.

Extending into this trough-like folding member is a guide plate 3| spaced from the top of the member 38, the tape passing between this plate 3| and the inner face of the member 38.

Extending into each of the folding members 38 is a plate 32 providing a guide plate for the bag, which in Fig. 5 I have designated 33, the bags as they are advanced through the machine passing along the side of this guide plate 32. As the paper tape leaves the roller 29 it is flat and at right angles to the end'of the bag. As the bag and tape advance through the folder or former 38 the tape is folded over the bag end to emerge from the folder as is indicated in Fig. 5.

The hold-down plates 25 are adjustably mounted at the underside of a slotted bar 35 extending transversely of the machine and fastened at each end to the side frames of the machine. Each plate is held to this bar by a bolt 36, passing through the slot in the bar, and a nut 31. It

will be appreciated that this permits of each plate I being adjusted laterally independently of the others.

The rollers 29 are adjustably supported on the transverse bar 35 by brackets 38 and bolts and nuts 39. These brackets 38 also support the trough-like members 38, the brackets being provided with a strap 48 which may be secured to the member 38 in any suitable manner.

The members 32 above referred to are adjustably carried by the transverse bar 35, being attached thereto by a bolt 4| and nut 42.

The plates 3| heretofore referred to which lie within the trough-shaped members 38 are carried by guide plates 45 extending longitudinally of the machine along each side thereof, these plates 45 properly directing the end of the bag into the apparatus as the same progresses into that part of the machine where the tape is applied to the bag ends. These plates are set so as to hold the bags away from the tape until both bag and tape have moved into that part of the machine where the tape is applied. The plates 45 are held in place on the machine frame by thumb screws 45'. One of the plates 45 is capable of being adjusted transversely of the machine to accommodate the machine to bags of different lengths by providing a plurality of holes 45" for receiving the thumb screws.

It will be appreciated, therefore, that the rollers 29, brackets 38 and member 38 are adjustable as a unit; also that guide plates 45 and plate 3| are adjustable as a unit independently of the rollers 29, brackets 38 and member 38 and that the plate 32 is likewise adjustable independently of each of these members.

The base of each of the

sewing machines

2 and 3 is designated 46 and is adjustable transversely of the machine, being mounted in guideways 41 so that the machine may be adjusted transversely of the machine to accommodate bags of different lengths.

The bags as they pass from the sewing machines travel between feed rollers 48 and 49, 58, 5| and 52, 53, the latter discharging the bags upon a receiving platform 54. The rollers 48, 58 and-52 are adjustably mounted on shafts 55, 58 and 61, respectively; while the rollers 49, 5| and 53 are adjustably mounted on shafts 58, 59 and 68, respectively.

One set of rollers 48 and 49 is adjustable with adjustment of the sewing machine base on that side of the machine, the bearing for the shafts 55 and 58 which carry the rollers 48 and 49 being provided in a member 58' which is rigid with the base of the sewing machine.

The rollers 48 and. 49 travel slightly faster than the machine feed so as to exert a gentle pull on the paper. Likewise the rollers 58 and 5| travel slightly faster than the rollers 48 and 49 to keep the paper taut, while the

rollers

52 and 53 are further overspeeded toeflect quick discharge.

Intermediate the sets of feed rollers 48, 49 and 58, 5| is the cutting-off mechanism 6| for the tape.

Reference numeral 98 designates a shaft extending transversely of the machine and mounted at each end in suitable bearings 9|. On each end of this shaft is a bevel gear 92, adjustable on the shaft and meshing with bevel gear 93 on the outer end of a stub shaft, each of these stub shafts carrying a cutter 6| at its inner end. The cutters are operated intermittently to sever the paper tape adjacent the side of each bag after the tape has been sewn in place thereon.

At one end the shaft 98 is provided with a bevel gear 94 in constant mesh with two pinion bevel gears 95 which are mounted in a rotatable housing 96.

ratchet I8I adapted to cooperate with pawl I82.

The two pawls are pivotally mounted on sta tionary mount I83 and are connected to each other for simultaneous operation by bar I84.

When one pawl is in engagement with its ratchet the other pawl is out of engagement with its cooperating ratchet.

The connecting member or bar I84 is pivoted to one arm I85 of a bell crank lever which is pivoted to the mount I83. The other arm of this bell crank lever is pivotally connected to a link I86 the opposite end of which is pivotally connected to one arm I81 of ,a bell crank lever pivoted on the machine frame, the other arm I88 of this bell crank lever being connected through a link I89 with a cam follower II8 cooperating with cam III on the same shaft 1| with the crank 24 which drives the pusher mechanism for the bags as above described.

It will be seen that when the cam III is rotated the pawls I88 and I82 will be actuated intermittently alternately to release ratchet 99 and lock ratchet I8I.

At the side of the machine opposite the differential just described bearing members I I3 and J are attached by member II 5 to the sewing machine base 46. Accordingly adjustment of the sewing machine will at the same time and to the same degree effect adjustment of the rollers 48 and 49 and the cutting mechanism adjacent thereto.

The driving motor for the machine is desi'gnated 62 and the shaft of this motor is provided with a gear 63 meshing with a gear 64 in mesh with a gear 65 on a shaft 66 carrying a worm 61. This worm meshes with a worm gear 68 on a short shaft carrying a bevel gear 89 meshing with bevel gear 78 on the shaft II carrying the crank 24.

The shaft I2 carrying the gear 64 also carries a gear 13 meshing with gear 14 on the shaft 58 of the feed roller 49. This shaft58 carries a gear I5 meshing with gear 18 which is on the shaft 91.

The gear 14 also meshes with an intermediate gear 18 meshing with gear 19 on the shaft 59 of the feed roller 5!, the gear I9 in turn meshing with an intermediate gear 88 meshing with a gear 8| on the shaft 88 of the feed roller 53.

The shaft 12 which carries the gear 84 is provided at its other end with a gear 82. The gear 84 meshes with a small gear 83 while the gear 82 meshes with a small gear 84, the

gears

83 and 84 being the drive gears of the two sewing machines. The shaft 12 which carries the gears 64 and 82 extends entirely across the machine.

Reference numeral 85 designates a sleeve on the shaft 12 adjacent thegear 82 which drives sewing machine gear 84, this sleeve being carried by a hanger 88 attached to the sewing machine base 46. Inside the sleeve 85 is a headed bushing keyed to the shaft 12. This bushing passes through the gear 82 and the hub of the latter is secured thereto as by a screw, for instance. Consequently when the sewing machine base 46 is adjusted gear 82 will be adjusted and hence remain in mesh with the sewing machine gear 84.

Adjustment of the sewing machine base 46 and the

rollers

48 and 48 is effected by a threaded rod 81.

In operation the bags are fed successively to the table I and advanced by the pushers I 3 to the

sewing machines

2 and 3. As the ends of the bags enter the forming members 38 they pass between the plate 32 of each of these members.

and the side of the formingmember, the guide plates 3| properly directing the bag. Thetape from the rolls 4 and 5 is advanced with the bags, passing. through the forming members 38 where it is folded over the ends of the bag, the tape previously having been glued at the rollers 26. As a consequence when the bag reaches the

sewing machines

2 and 8 the tape has been folded over the bag ends and pasted down.

As the bags pass through the sewing machine the tape is sewn in place and by the time this sewing operation is completed the cam II I has moved to such position that the pawl I82 will be in engagement with the ratchet IM to prevent the housing of the differential mechanism which constitutes a part of the drive for the cutters from rotating. Consequently the pinion 94 will be driven to drive the shaft 98, rotating the cutters 8| and severing the tape. The"rotation of these cutters is only momentary, further rotation of the cam I ll shifting the pawl I82 out of engagement with the ratchet IM and the pawl I88 into engagement with the ratchet 98, this latter operation preventing further rotation of the cutters without, however, necessitating stopping the gear 18. The bag is then passed by the feed rollers 58, SI, 52, 58 to the discharge platform 54.

It will be appreciated that by changing the worm gear 68 the machine can be changed over to accommodate bags of different widths.

Itwill be understood that changes may be made in the mechanism above described within the purview of my invention.

This application is a division of my copending application Serial No. 606,839, filed April 22, 1932 which has resulted in Patent No. 1,989,943.

What I claim is:

1. In apparatus of the class described, the combination of means for advancing articles successively along a support, means in the path of the articles for folding tape over the ends of the articles and to secure the same in place to provide a plurality of advancing articles connected by the tape, a drive for the advancing means operating continuously, rotary cutters for severing the said tape between adjacent articles, driving mechanism for the cutters, and cam mechanism between the cutter driving mechanism and the driving mechanism for the advancing means and controlled by the latter to effect intermittent rotation of the cutters.

2. In apparatus of the class described, the com bination of means for advancing articles succes mechanism for the cutters, and a cam amxed t0 the shaft of said crank for efiecting intermittent and timedrotation of the cutters.

3. In apparatus of the class described, the combination of pusher mechanism for advancing articles successively along a support, means in the path of the articles for folding tape over the ends of the articles and to secure the same in place thereby to provide a plurality of advancing articles connected to each other by said tape, a driving motor, a crank driven by said motor for driving the pusher mechanism, forwarding rollers driven by said motor for continuing the advance of the connected articles, rotary cutters for severing the tape between adjacent articles, and a cam rotating in fixed relation to said crank for effecting intermittent rotation of said cutters.

4. In apparatus of the class described, the'combination of pusher mechanism for advancing articles successively along a support, means in the path of the articles for folding tape over the ends of the articles and to'secure the same in place thereby to provide a plurality of advancing articles connected to each other by said tape, overspeeded forwarding rollers for receiving the connected articles, rotary cutters for severing the tape between adjacent articles, and cam mechanism driven in timed relation to said pusher mechanism for intermittently rotating said cutters.

5. In apparatus of the class described, the combination of mechanism for advancing articles successively along a support, means in the path of the articles for folding tape over the ends of the articles and to secure the same in place thereby to provide a plurality of advancing articles connected to each other by said tape, rotary cutters for severing the tape between adjacent articles, cam mechanism to effect intermittent rotation of said cutters, and pairs of rollers at each side of said cutters operating at different speeds to maintain tension on the tape during the severing operation.

ADOLPH PO'I'DEVIN.