US159030A - Improvement in paper-bag machines - Google Patents

Description

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Patented Jan. 26,1875.

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Paper-Bag Machine.

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Paper-Bag Machine. No. 159,030. Patentedjan. 26,1875.

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Paper-Bag Machine."

Patentedlan.26,1875.

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Paper-Bag Machine.

Patented Jan. 26, 1875.

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lPrapelf-ulag Machine.

UNITED STATES PATENT i Gamen.

THOMAS W. GRINTER, OF CINCINNATI, OHIO, ASSIGNOR TO HIMSELF AND JOSEPH F. JEWETT, OF SAME PLACE,

IMPROVEMENT INHPAPER-BAG MACHINES.

Specification forming part of Letters Patent No. 159,030, dated January 26,1375; application filed September 30, 1874.

i To all whom yit may concern:

Be it known that I, THOMAS W. GRINTER, of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Paper-Bag Machinery, of which the following is a specification:

The object of my invention is automatically to make paper bags. The subject-matter claimed is hereinafter specied.

The accompanying drawings represent my improvements embodied, in the best way now known to me, in a machine organized for the manufacture, from a web of paper, of bellowsfolded, satchel-bottomed bags.

Figure l represents a plan or top view of so much of the machine as is necessary to illustrate the subject-matter herein claimed; Fig. 2, a front view thereof 5 Fig. 3, a vertical longitudinal section therethrough on the line 'o c of Fig. l; Fig. 4, a similar section on the line u u of Fig. l; Fig. 5, a vertical transverse section on the line t t of Fig. 1 5 Fig. 6, a section on the line e z of Fig. 2; Fig. 7, a similar section on the line a zo, and Fig. 8 a section on the line y y of Fig. 2. Figs. 9, l0, and 1l represent detail sections through the folding mechanism. Fig. l2 is a vertical transverse section, on an enlarged scale, through the knife. Fig. 13 is a front view of the bottom folding mechanism, partly in section, with the front folding-roller removed.

The mechanism is mounted in a stout frame, A, preferably of metal. A main or driving shaft, B, is driven, in any well-known way, from a suitable prime mover. The cams and gearing which actuate the various parts of the machine are mounted on this shaft, as hereinafter specified.

The paper, of a width equal to twice the depth of the bag, plus that of the bottom folds and top flap, if any, is fed from a roll, C, provided, if desired, with a proper tension device to insure accurate feeding. The web c of paper passes between tension-rolls Cl C2 to the cutters, which consist of two fixed blades, d d1, having toothed edges, which are, by preference, waved or indented, as in Fig. l, in order to cut the blank of a shape which will leave an overlappingedge on each side when folded,

as hereinafter explained. The web passes between the blades ofthe cutter,through creasing rolls O3 G4, which deliver it between two sets of feed-tapes, E El, which I call the rst feed* tapes. These tapes run over suitable rollers c el e2 e3 in a well-known way, traveling somewhat faster than the feed-rollers, in order to draw the severed blank away from the web. As the web passes between the drawing or creasing rolls C3 CSthree central, parallel, transverse creases are formed in it by creasin g-led ges ol c2 on the upper roll, and a similar one, o3, on the lower one, which creases form the lines on which the bottom folds of the bag are subsequently formed. Each of these ledges works in a corresponding groove in the opposite roll. Then the web has been fed forward the width of a bag, a knife, cl2, mounted on a gate, D, reciprocating in suitable guides in the frame, moves quickly past the fixed blades d d1, and severs the blank from the web. The edge of this blade is serrated correspondingly with that of the fixed ones. The knife cuts both on its upward and downward stroke, pausing after each cut to allow the web for the next blank to pass over or under it, as the case may be. For light work the cutter may move so rapidly as to allow the feed of the web to be continuous; but with heavy paper I prefer an intermittent feed, as it insures more accurate work. This end is easily attained by the usual pawl-and-ratchet feed, or other well-known equivalents. The transversely-creased severed blank is carried forward between the tapes E El until its front edge abuts against stops E2, which arrest its movement. These stops maybe n iade adjustable to suit varying widths of bags. The moment the forward movement of the blank is arrested a folding case or sheath, F, descends upon the paper directly over the central crease previously formed in the blank, and carries it downward between two rotating folding-rollers, Gr G. Just before the commencement of thisdescending movement of the sheath, folding-blades H H1, sliding in suitable guides, move upward at an angle of about fortyf1ve degrees, parallel with the folding-rollers, and at each end thereof passing `in between the rollers, and acting on each side of the blank in such manner as to fold the blank on the line of the creases previously formed therein, and to push the fold thus formed into the sheath. (See Fig. l0.) The folders then withdraw, the folded part of the blank is seized by the rollers, the sheath retracts, the blank is carried down between the rolls, and the folds compressed. (See Fig. 11.) of the feed-tapes E E1 is so much more rapid than that of the feed-rolls G1 G2 as to gain time enough for the sheath to descend upon one blank, and to rise to make room for its successor before it arrives,'this portion of the' stroke being made very rapidly. The transversely-folded blank is fed, by the rollers G G1, through a guide-frame, G2, to a second set of rollers, I I1, each provided with a set of feedtapes, z' 'i'. Theblank is carried by these tapes, bottom foremost, horizontally backward transversely to the line of movement o f the first set oftapes,E E1, and directly beneath them, until it abuts against a stop, I2. The result of the previous manipulations to which the blank has been subjected up to this point is that it lies with one of its overlapping edges over two rollers, J J', provided with' carryingtapes j j1, Fig. 4.. As soon as the blank stops in this position a vibrating pasting knife, 7c, passes over a paste-roller, l, and descends upon the blank, folding and pasting its flap, and carrying it down between the rollers J J', above mentioned, by which the fold is coinpressed. The third set of tapes, j j, carry the blank forward until it abuts Yagainst a stop, y2, inY whichpositionits un-V pasted edge lies over two rollers,M M'. A second vibrating pasting-knife, n, passes over a paste-roller, m, descends upon the blank, pastes and folds its edge, and thrusts it between the rollers M M', which discharge it from the machine in a completed state. Each set of tapes gains upon the preceding one the time necessary for its appurtenant apparatus to perform its functions before the succeeding blank arrives. Four blanks are simultaneously passing through the machine in different stages of completion.

The bag formed by a machine organized as above described is similar to the one shown in an application for Letters Patent of the United States filed by me April 17, 1874. i

The main driving-shaft B projects beyond the frame A at each end. A spur-pinion, o, on this shaft drives the feed-rolls G1 C2 and creasing-rolls C3 G4 through a train of gears, O O' o2 o3 o'r 05. The first set of feed-tapes are driven from the gear 05 by gears p p1 p2. The knife d2 is reciprocated by means of a grooved cam, Q, on the main shaft, in which friction-rollers mounted on an arm, Q1, traverse. This arm is fast on a rock-shaft, Q2, on which an arm, Q2, vibrates. A link, Q4, connects this arm with the gate D, which carries the knife. The cam is provided with a snailgroove, q, on each face, eccentric to the axis, and of varying depth. (See Figs. 2 and 6.) 1n Fig. 2 the cam is shown in section on the The movement line 2 2 of Fig. 6.V The roller-arm Q1 is bifuri cated, so as to embrace the cam and roller, being on each side thereof', and each engaging alternately therewith. This engagement is effected by the revolution of the cam itself, which shifts the arm and the rock-shaft on which it is mounted at proper intervals, the rock-shaft being made movable endwise in its bearings for this purpose. The folding case or sheath F is actuated by means of a bevelpinion, 1^, on the main shaft B, which pinion drives a corresponding one, r1, on a countershaft, R, which carries a cann'Rl, by which an arm, r2, on a rock-shaft, r3, is vibrated. A link, R2, connects this arm with the corresponding arm f of a rockshaft, F1, carrying arms F2, pivoted to the sheath F, which slides in guides f' on the frame. A spur-wheel, S, on the counter-shaft R, drives a spur-pinion, s, on the roller I1, gearing with a similar pinion, s1, on the roller I. A bevelgear, s2, ou the shaft of the roller I1, drives a corresponding pinion, s3, on a vertical shaft, S', carrying on its upper end a bevel-gear, g, which drives a corresponding one, g1, on the shaft of the roller G1. The roller G is driven by a pinion, g2, meshing with the gear g1. The tuckers or folders H H1 are actuated by means of a cam, T, Fig. 3, o n the main shaft B, which cam vibrates an arm,T1, rocking on a fulcrum, t, and secured to a pitman, T2, connected by links t1 t2 with rocking arms H2, connected by links h with the folders H H1. The iirst pasting-knife lc is actuated by means of a cam, U,

Yon the main axle, which vibrates an arm, u,

on arock-shaft, U1. An arm, U2, on this rock shaft is connected by a link, U3, with the arm K of' the paster, which arm is mount-ed on a rock-shaft, K'. A spur-wheel, V, on the main shaft drives a corresponding idle gear, V', which drives a pinion, v1, on the shaft of the roller J Another pinion, c2, on this shaft drives a pinion, c3, on the roller J'. The spur- Wheel V also drives a pinion, w, on the shaft of the roller M. The roller M' is driven by a gear, w3, on its shaft meshing into a gear, co2, on the shaft of the roller M. A cam, X, on the main axle vibrates a rocking arm, X1, connected by a link, X2, with an arm, N, on a rockshaft, n', ou which the arms N2, which carry the paster, are mounted. The pastingrollers are rotated by the friction of the pasting-knife; or they may be operated in any Well-known way.

I claim- 1. The combination ofthe fixed cutters, between which the web of paper passes, and the Vdouble-acting reciprocating cutter vibrating carrying-tapes geared to run faster than the rolls, whereby the creased and severed blank is drawn away from the web.

4. The combination of the supporting-tapes, the folding-sheath, and the folding-blades, whereby the bottom folds of the bag are doubled into, and the sides laid upon, the sheath.

5. The combination of the creasing-rollers, 'the carrying-tapes, the sheath, and the folders, whereby the blank is creased and folded.

6. The combination of the sheath, the folders, and the compressing-rollers, whereby the bottom folds are formed and compressed. f 7. The combination of the waved or indented cutter, the carrying-tapes, the sheath, the folders, the compressing -rollers, the guideframe, the second set of rollers, the carryingtapes, and the first pasting-knife, whereby the blank is severed, folded at the bottom, reversed, and presented in proper position to the iii-st pasting-knife.

THOMAS w. GRINTER.

Witnesses:

WM. REED, GEORGE E. J EwE'r'r.

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