US160446A - Improvement in paper-bag machines - Google Patents

Description

` l 4Sheets--Sheeg 2, W. LID DELL.

. Paper-Bag Machine. N0.160,446. Y Patented March2,1875. 4

V .M/ y g 4 @ggg 4 m THE GRAPHIC.COJE'HOTO'LITMKSQH PARK PLACE,N`.Y.

4 Sheets-Sheet 3.

W.. LI'DDELL. Paper-Bag Machine.

, Patented March 2,1875.

No.l60,445.

THE GRAPHIC C0.PHOT0.LITH.39&41 PARK PLAGEJLYA 4 Sheets--Shee 4. W. LID DELL.

Paper-Bag Machine. N0, 160,446 Patented March2,\875.

Xfire/liar I //kefmr UNITED STATES PATENT OFFICE.

VILLIAM LIDDELL, OF BUFFALO, ASSIGNOR TO HIMSELFAND HOWLAND & OO., OF SANDY HILL, NEl/V YORK.

IMPROVEMENT IN PAPER-BAG MACHINES.

Specilication forming part of Letters Patent No. 160,446, dated March 2, 1%75; application filed November 3, 1874.

To all whom t may concern Be it known that I, WILLIAM LIDDELL, of

' the city of Buffalo, in the county of Erie and chines which are employed in the manufacture of what is known as square or satchel bottom bags, the features of which will be best understood from the following description.

1n the accompanying drawings, consisting of three sheets, Figure 1 is a side elevation ot' a machine provided with my improvements. Fig. 2 is a top-plan view. Fig. 3 is a vertical longitudinal section, and Fig. 4 a front elevation, thereof. Fig. 5-is a cross-section in line w Fig. 2. Fig. 6 is an end elevation, with the lower conveyer-rollers and bottom paste mechanism removed. Fig. 7 is a sectional View of the feed-rollers, with the expanding springs compressed between the same. Fig. Sis a similar view, with said springs thrust forward and expanded. Fig. 9 is a similar view of the feed-rollers, with the side folders pressed against the same, and the upper and lower fblding-rollers in the act of forming the upper and lower bottom lap. Fig. 10 is a fragmentary view of the side-folding arms in a close position, and actuating parts. Fig. 1]

is a perspective view, illustrating the manner in which the side-folding arms fold in the distended mouth of the paper tube. Fig. 12 is a detached view of the inclined table and connecting parts. Fig. 13 is a perspective View ofthe bag with the two side laps formed. Fig. 14 is a perspective view of the bag with the bottom completed. Fig. 15 is a detached view of the cam by which the expanding-springs are actuated. Fig. 16 is a detached view of the cam by which the upper and lower folding-rollers are operated. Fig. 17 is a perspective view of one of the cams by which the sidefolding hands are closed. Fig. 1S represents the plain end of the tube; Fig. 19, the same, opened by the spring-arms; Fig. 20, the corners of the tube turned in by the side-folders; Fig. 2l, the upper and lower bottom iiap, formed bythe upper and lower folding-rollers. Fig 22 represents the bottom of the bag flattened out as it passes onto the inclined table. Fig. 23 represents the bottom pasted and folded as it is discharged by the last set of pressure-rollers.

Like letters ot' reference designate like parts in each ofthe figures.

A A represent the side frames of the machine connected by cross-stays a, in the usual manner; al, a horizontal shaft, arranged at the rear end of the frames A, for the reception ofthe paper roll, and a2, an elevated guideroller, over which the web ot' paper passes preparatory to being formed into a tube. B is the horizontal bed-plate or table, supported by cross-bars b b, and 0 c1 the two main feedrollers, arranged above each other at the forward end of the table B. rlhe upper roller c is supported in suitable standard-bearin gs c2, secured to the side frames A A, and connected to the lower roller c1 by two gear-wheels, cl cl, in an ordinary manner. D is the main driving-shaft of the machine. supported in bearings d d, arranged near the forward ends of the side frames A. As represented in the drawings, motion is transmitted to the shaft D from a pulley, d1, and pinion d2, turning on a stud or arbor secured to one of the side frames, and engaging with a gear-wheel, d3, secured to one end of the shaft D. eis a crank, mounted on the opposite end ofthe shaft D, and el a rod or link connecting the same with a radial arm, e2, turning' loosely on an arbor, e3. E is a gear-wheel, and El a ratchet-wheel, secured together side by side, and turning loosely on the arbor. The radial arm e2 is provided with a spring-pawl, e4, engaging with the teeth of the ratchetwheel E', so that when the arm c2 is turned by the crank ein the direction of the arrow, Fig. 1, the ratchet-wheel E and gear-wheel E are turned on the arbor c, while, when the movement of the arm e2 is reversed, the pawl e4 slides over the ratchets, when the wheels E E remain stationary. The gear-wheel E engages with a pinion, c, secured to the shaft of the lower feed-roller c1.

By this means an intermittent rotary motion is transmitted to the feed-rollers O C from the continually-rotating driving-shaft D.

The bolt or pin by which the rod el is connected vby the crank c is arranged in a slot of the latter, so that the throw of the crank e can be increased or reduced by shifting said bolt in its slot, whereby the arc through .which the arm e2 moves and the motion of the feedrollers are correspondingly increased or lessened. ff are two pair of dat springs arranged between the feed-rollers C C', the upper roller being provided with two shallow annular grooves, c3, for the reception thereof. The two springs f, forming one pair, are arranged one upon the other, and secured with theirrear ends to the arms of a bifureated bar, F, while their front ends are free, the springs being so constructed that their front ends will expand when they are released. The rear end f1 of the bar F slides in dependent bearings f2, secured to brackets f2.

The web of paper is formed into a tube around this bar by any suitable and wellknown means, which mechanism is not shown in the drawings, the position of the guideroller a2 bein g removed farther back or changed, as may be required by the particular tubeforming mechanism employed.

The bar F is operated by a lever, g, mounted on a cross-shaft, g1, and connected with the bar by a link, g2. rlhe bar F is retained in such a position th at the free ends of the springs f are compressed together, or held in contact between the feed-rollers C C', as shown in Fig. 3, by a spiral spring, g3, connecting the lever g with the rear guide f2. The shaft g1 and lever g are actuated by means of an arm, g4, and rod g5 from a cam, gi, mounted on the shaft D, and engaging with a pin on the rod g5, the latter sliding in guides gFI attached to the side frame. H H are two radial frames or bearings, arranged at the ends of each of the feed-rollers C C', so as to turn loosely on the shafts thereof. h is a folding-roller, supported in the bearings H of each feed-roller, so as to travel in contact with the surface thereof. llhe two swinging bearings H of each roller are connected by a cross-stay, h1. h2 is v1a rock-lever, pivoted at its lower end to one of the side frames, and jointed at the top to two links, h2, connecting with the swinging bearings H of both feed-rollers, so as to actuate the same simultaneously. The lever h2 is swung forward at regular intervals, so as to bring the upper and lower folding-rollers h together in front of the feed-rollers, by means of a rod, 11.4, sliding in a bearing, h5, and actuated by a cam, h, mounted on the shaft D, and engaging with a pin on the rod h4. The lever h2 is returned to its rearward position when released from the cam h6 by a spiral spring, hl, Fig. 2, connecting it with one of the side frames (l. It is a flat spring or plate attached to the cross-stay of the upper bearings H, and arranged in a groove of the upper roller h, on the inner side thereof, so as to project slightly from under said roller, for a purpose hereinafter to be explained. I represents the movable knife, and I1 the stationary knife, by which the paper bags are severed from the tube. The movable knife I is secured to a head, t', attached to a rock-shaft,i'1, by an arm, 2, which is preferably composed of two parts bolted together, so as to be lengthwise adjustable. This knife is retained in an elevated position by a cam, I2, mounted on the shaft D, and engaging with the pin j of an arm, J, secured to the rock-shaft il. The cam I2 is provided with a recess, jl, which, as the pin j of the arm J enters, leaves the knife I free to descend and close upon the stationary blade I1. )2 is an elastic cushion secured to the side frame A, and j an arm secured to the rock-shaft il, so as to strike this cushion at the moment the tube is severed, thereby arresting the closing movement of the knife, and causing the same to rebound when the pin j is withdrawn from the recess of the cam I2 and the knife returned to its elevated position by the latter.

The same result may, however, be attained by arranging the cushion j2 in the bottom of the recess jl of the cam.

The lower knife Il is attached to the side frames A A in such manner that it can be readily adjusted toward and from the feedrollers to correspond with the adjustment of the upper knife. folding hands, each having two concave faces joining to a horizontal edge, so as to fit in the angle between the feed-rollers G Gl. The hands KK are hinged to horizontal arms L L, pivoted at Z to a cross-piece, Z1, secured to the side frames. The hinges of the hands K K are provided with a stop or shoulder, k, to limit their inward movement on the pivot, while their outward movement is opposed by a iiat spring, k1, the normal position of the hands being shown in Fig. 2, in which the springs k1 hold the hands against the stops k. rIhe arms L when opened, as shown in Fig. l, hold the folders K at such a distance apart that the paper tube can pass between them to the cutting mechanism. The arms L are swung inwardly, so as to close against the feed-roller, by two cams, Z2, mounted on the driving-shaft D, and engaging with pins projecting downwardly from links Z3, attached with their inner ends to the arms L, while their outer ends are guided in brackets Z4, secured to the crosspiece Z1. AThe'arms L are opened, when released from the cams Z2, by spiral springs Z5, in an obvious manner. M is an inclined table, arranged between the side frames A A, with its upper end in the rear of the stationary knife Il, while its lower end terminates near the bottom of the machine, at the forward end thereof. m m1 are two feed-rollers, arranged near the upper end of the plate M, on opposite sides thereof, and n a two rollers of larger diameter, arranged similarly near the lower end thereof'. The rollers m n and m1 a are connected, respectively, by endless tapes or cords o 01, forming two con- Veyers, the carrying parts of the tapes running in close contact with the upper surface K K represent the two sideof the inclined table. m2 is a guide-bar, attached to the under side of the cross-piece l1, and arranged with its inner end over the stationary knife Il, so as to guide the bottom lap of the bag between feed-rollers m m1. p is a pinion, mounted on the end of the shaft of the upper feed-roller m1, and 101 a counter-pinion, turning on an arbor secured to the side frame, and transmitting motion to the pinion p from a gear-wheel, P, mounted ou the driving-shaft D. The upper roller m transmits motion to the lower roller'a byineans of the tape-s o, whence the motion is transmitted to the roller nl by two gear-wheels, 102103, and thence to the upper roller m1 by the tapes 01. q is the pastereceptacle of the bottompasting mechanism, arranged at the forward end of the machine, near the lower portion of the inclined table M, and q the paste-roller arranged therein.

R is the revolving pasting-plate, curved in the form of a cylinder-segment, and attached by 'an arm 1' to a shaft r1 arranged e uidistant from the surfaces of the inclined table and the paste-roller g. The radius of the segmental plate R is slightly less, or almost equal to the distance from the axis of the shaft r1 to the surface of the paste-roller and to the inclinedy table M, so that as the plate R revolves its surface will come in contact with the paste 011 the roller q', and take it therefrom, and then apply it to the paper. The face of the pasting-plate is preferably roughened to better receive, retain, and transfer the paste to the paper. r2 is a friction-roller, arranged in an opening of the inclined table, at the point where the paste-plate R is designed to come in contact therewith, so as to facilitate the carrying along of the paper by the plate R in applying the paste thereto. The outlines of the pasting-plate R are of such shape as to apply the paste in the bottom of the bag in the form represented by the shaded portion in Fig.

- 13. r3k is a slot formed in the rear portion of the pasting-plate, and extending nearly the whole length thereof, to prevent any paste being applied between the inner edges ofthe side laps 1 2, which would cause the bottom to adhere to the inside ofthe sack. s are projecting gagestrips of rubber or other suitable material arranged around the outer edge of the pastingplate for the purpose of regulating the thickness of the layer of paste taken from the roller q. The paste-roller q' is revolved by its contact with the carrier R, but if desired it ma-y be rotated from the shaft r1 by an endless band and pulleys, or by any other suitable means. The paster-shafti11 is provided with a pinion, S, to which motion is transmitted from the wheel P of the main driving-shaft D by means of a duplex gear-wheel, Sl S2. The latter is composed of two halves, arranged side by side and secured together, the halfS1 engaging with the Wheel P being provided with teeth on its entire circumference, while the half S2 engaging with' the pinion S of the paster-shaft is` provided with teeth only on a certain portion of its circumference. The size of the pinion S and of the toothed portion S2 of the intermediate gear-wheel are so proportioned that the paster-shaft will make one revolution for each revolution of the main driving-shaft D, while the pasting-plate R will have the same circumferential velocity as the upper conveyer-rolls m m1, and consequently travel at the same speed at which the sacks move past the pasting mechanism. t is a circular disk mounted on the shaft r1, and provided with a notch, t1, in which engages a spring-pawl, t2, pivoted to the inner side of the side frame. The disk t is so arranged on the shaft r1 that when the pasting-plate lt has completed one revolution and the partlytoothed wheel S2 is disengaged from the piuion S, the pawl t2 will engage into the notch t1 and retain the paster-shaft and pinion S in this position ready for re-engageinent with the wheel S2, as shown in Figs. 2, 3, and 4. The weight and overhanging position of the pasting-plate R, when the shaft 'rl is released, are sufficient to counteract any momentum which it may have acquired during its revolution, and insure the stopping ofthe parts at the proper point. U is a folder-plate attached to a shaft, u, arranged above the lower end of the inclined table near the rollers u n. V is an oscillating striker or folding arm pivoted at o to a bracket attached to one of the side frames A, and arranged parallel with the inclined table and in close proximity therewith. It is actuated by a sliding bar, v1, running in guides o2 attached to the table M and connecting with the striker V by a pin, 03, engaging in a slot thereof, as clearly shown in Fig. 6. if* is a spiral spring attached to the bar o1, so as to hold it in a raised position. The bar r1 is operated by a cam or arm, o5, mounted on the paster-shaft and engaging with a projection, o6, on the bar nl. The latter actuates the folderplate U by means of a pin or projection, u1, engaging with a springdog, u2, on the shaft u. The shaft u is provided with an arm, ua, against which bears a spring, a4, whereby the folder-plate U is held iiran open position, as represented in Fig. l2.

The paper tube having been formed it is fed forward between the feed-rollers C C with the springs ffwithin the tube, until the mouth of the same projects about six inches from the feed-rollers,when the motion ofthe latter ceases. The bar F and springs f f, the ends of which have been pressed together so far, are now thrust forward by the action of the cam gs, so that the free ends of the springs f f expand, whereby the mouth of the tube is distended, as clearly shown in Fig. S. The arms L, with the folding-hands K in the position shown in Fig. 2, are now closed by the cams Z2. As these arms begin to close, the relative position ofthe hands to the arms remaining unchanged, the edges of the hands begilitoincline inwardly from their former position parallel to the feed-rollers. In continuing to close, the folding-edges of the hands strike the edge of the distended mouth of the tube in the inclined position shown in Fig. 11, and begin to fold in the paper, when the outer end of the foldinghands engage in the angle between the feedrollers, near their ends, which, as the arms continue their closing movement, cause the inner ends of the hands K to be gradually forced into the angle of the feed-rollers, and against the same, until they assume the posisition shown in Figs. 5 and l0. This action of the han ds K K causes the mouth of the tube to be folded laterally and inwardly, so as to approximate the form of the folds marked l 2 in Fig.13. As the hands K K close against the feed-rollers the springs f f are released from the action of the cani gs, and withdrawn to their former compressed position by the spiral spring g3. The folders K being retained in their closed position against the feed-rollers, the upper and lower folding-rollers h It are brought simultaneously together over the side folders K by the action ofthe cam h6 npon the rock-lever h2, folding the top portion of the mouth of the tube downward over the upper straight edges of the hands K K, and the bottom portion thereof upward, over the lower straight edges thereof, whereby the folds or creases marked 3 4 in Fig. 13 are produced. The spring ILS, projecting below the upper foldin g-roller h, serves to press inward the upper lap 3 a little in advance of the lower one 4, thereby preventing the interference of one lap with the other. r1he folding-rollers h h are now released from the action of the cam h5, and swiftly moved back to their former position by the spring hl, when the side folders K K are also released from the action of the cams Z2, andreturned to their extended position by the springs L5. The mouth of the tube being creased, as above described, the top and bottom laps partially expand or straighten out again after the rollers hare withdrawn. As soon as the side folders K are opened the feed motion begins, and the paper tube is fed over the stationary knife l1 toward the conveyer-rollers m m1, the tip of the partially-unfolded lap 4 being guided between the latter by the guidebar m2. rollers m m1 is slightly in excess of that of the feed-rollers (l C1, so as to take up any slack in the paper, and hold it tant over the knife Il. in being advanced between the endless tapes 0 o over the table M, as shown in Fig. 6, now meets, with the point of its lower lap 4, the point of the pasting-plate R, and is clamped thereby against the roller r2, as shown in Fig. 3, when the knife I descends, and severs the bag from the tube. The paste is now applied to the flattened bottom, in the form represented in Fig. 13, bythe pastingplate as it revolves. Before the bag has advanced far enough to reach the folding-plate U the latter is swung with its edge against the inclined table by the action of the sliding bar o1, as shown by dotted lines in Fig. 12, so as to receive the tip of the lower bottom lap 4 as it is fed forward. The folder U is then re- The circumferential Velocity of the rlhe creased end of the paper tube,A

leased, and returned to its open position, where-` by the lower bottom lap 4 is raised and turned up. The striker Vis now swung downward from the position shown in Fig. 6, and travels in contact, or nearly so, with the surface of the paper bag untill it reaches the upper lap 3, which it folds down under the lower lap 4, the latter being folded back as the bottom of the sack passes under the plate U in traveling to the rollers a a. The latter finally compress the folds, the tip of the lower fold being supplied with paste, by which it is secured over the tip of the lap 3. As the partially formed bag is carried down the inclined table by the endless tapes, the upper tapes o, by pressing the paper against the table, retain it in place thereon during the refolding of the laps 3 and 4, as above described. When the bottom of the bag is lirmly clamped by the rollers a n', the striker V is released by the cam c5 and returned to its former position by the spring c4. The completed bags are conducted from the rollers n a to a drying apparatus of any suitable construction.

What I claim as my invention is- 1. The combination, with the feed-rollers C C', of the reciprocating bar F and expanding-springs j' f attached thereto, for distendin g the mouth ofthe tube against the peripheries or faces of the rollers, preparatory to folding the same, substantially as hereinbefore set forth.

2. The combination, with the feed-rollers G C and expanding-springs, of the side folding hands and arms K L, constructed and combined as described, for forming the side laps of the bottom of the bag, substantially as hereinbefore set forth.

3. The combination, with the arms L L and side folding-hands K K hinged thereto, of the shoulders 7c and springs 7c', substantially as and for the purpose hereinbefore set forth.

4. The combination, with the rollers C C, of the side folding-hands K K, and the foldingrollers It h, adapted to the peripheries of the feed-rollers, for folding the upper and lower bottom laps, substantially as hereinbefore set forth.

5. The combination, with the feed-rollers C C and folding-rollers h h, of the swinging bearings H H, links h3, and rock-lever h2, for operating the folding-rollers simultaneously, substantially as hereinbefore set forth.

6. The combination, with the simultaneously-operatin g folding-rollers h h, of the projecting plate or spring ha, for folding one of the laps a little in advance of the other, substantially as hereinbetore set forth.

7. The combination, with the intermittinglyrevolving pasting-plate R and shaft r1, of the notched disk t tl and spring-pawl t2, for supporting the pasting-plate in its proper position while at rest, substantially as hereinbcfore set forth.

8. The combination, with the driving-shaft D and paster-shaft r1, of the connecting gear- Wheels P S, and the perfect and mutilated gears S1 S2, for imparting an intermittent rotary motion to the pasting-plate, substantially as hereinbefore set forth.

9. The combination, With the table M and tape conveyer o o', of the folding-plate U, for refolding the lower bottom lap of the bag, substantially as hereinbefore set forth.

10. The combination, with the table M and conveyer o o', of the folding-plate U and oscillating striker V, the bottom 1ap3 being folded and held down by the striker until the folderplate has folded back the bottom lap 4 and secured it in an overlapping position over the lap 3, substantially as hereinbefore set forth. I 1l. The combination, with the folder-plate

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