US337964A - Paper-bag machine - Google Patents

Description

(No Model.) 4 Sheets-Sheet 1.

W. A. LORENZ & W. H. HONISS. PAPER BAG MACHINE.

D No. 337,964. Patented Mar. 16, 1886.

N. PETERS, Pmmuum m nw, Washinglnn. n. c.

(No Model.) 4 Sheets-Sheet 2.

W. A. LORENZ & W. H. HONISS. PAPER BAG MAOHINE.

No. 337,964. Patented Mar. 16, 1886.

N. PETERS PhOln-Lilhogmpher. Washington D. c.

(No Model.) 4 Sheet sSheet 3. W. A. LORENZ & W. H. HONISS.

PAPER BAG MACHINE.

No. 337,964. Patented Mar. 16, 1886.

N. PETERS, Phawum a n w. Waihinglcn. n. c.

(No Model.) 4 SheetsSheet 4.

W. A. LORENZ 81; W. H. HONISS.

PAPER BAG MACHINE Patented Mar. 16, 1886.

Fly. 9

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Inventors: WM %Zaw m UNITED STATES PATENT Orrrcn.

WILLIAM A. LORENZ AND WILLIAM H. HONISS, OF HARTFORD, CONNECTI- CUT, ASSIGNORS TO FELIX W. LEINBAOH AND CLARENCE A. WOLLE, OF

BETHLEHEM, PENNSYLVANIA.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 337,964, dated March 16, 1886.

Application filed Fehruaryfl i, 1885. Serial No.156,865. (No model.)

To all whom it may concern.-

Be it known that we, WILLIAM A. LORENZ and WILLIAM H. HoNIss, of Hartford, Connecticut, have invented certain new and useful Improvements in Paper-Bag Machines, of which the following description and claims constitute the specification, and which are illustrated by the accompanying four sheets of drawings.

This mechanism opens out one end of a tuckedpaper tube into the box like form shown in Figure 7 of the accompanying drawings, and is substantially different from the mechanism which performs that function in the machine set forth in our application of May15, 1884, for Letters Patent for a new and useful paper-bag machine, and is suitable to take the place of that mechanism on that machine, such box-like form being one of the forms assumed by the material when being manufactured by that machine into a squarebottom paper bag.

Fig. 1 ot the drawings is a side view of our present invention. Fig. 2 is a plan view of the same. Fig. 3 isa cross-section looking to the left on the line a a of Figs. 1 and 2. Fig. 4 is a cross-section of the tucked paper tube and a view of the tips of the grippers 44 44 and 49 49, adjacent thereto. Fig. 5 is a side view of part of the folding mechanism when doing its work, and Fig. 6 is a View of the same when its work is done. Fig. 7 is a perspective view of a piece of tucked paper tubing of suitable proportions for one squarebottom paper bag,with one of itsends opened out, as by this machine, into a box-like form preparatory to being folded down into a diamond shape, and thence into the form of a complete square bag-bottom. Fig. 8 is a side View of the working-points of the folder mechanism when about to grip the bag-blank, and Fig. 9 is a siniilarview after they havegripped the blank and partly opened it out, while Fig. 10 is a view of the same after the box-like form is completed and is about to be released from the grippers.

The numeral 1 in Figs. 1 and 2 indicates the forward end of the former of the machine shown in our application of May 15, 1884,

while 2 indicates the tucked-paper tubing being drawn from that former into that part of the machine shown in this application. The loose pulley 3 and the fixed pulley 4 revolve on the stud 5, and are driven by the belt 6 in the direction indicated by the arrows in Fig. 1. The gear 7 is secured to the hub of the pulley 4, and meshes with the gears8 and 9, keyed to the shafts 10 and 11, respectively. The gears 8 and 9 respectively mesh with the gears 12 and 13, which latter gears are re- 66 spectively keyed to the shafts 14 and 15. These shafts are journaled in boxes, adjustable by set-screws and springs. The drawing-rolls 16 and 17 are respectively keyed to the shafts 10 and 14, and the cutting- 6 rolls 18 and 19 are keyed to the shafts 10 and 15, respectively. One of the cutting-rolls is provided with a knife, which severs a baglength from the paper tubing at each revolution of those rolls, and the other cuttingroll is provided with a rubber pad, against which that knife operates. The crank 20 is attached to the shaft 10, and works the connecting-rod 21, which rod is pivoted to the carriage 22, reciprocating on the ways 23 and 24. The presser-plate 25 is rigidly attached by its arms 26 and 26 to the shaft 28, and is held down upon the top of the carriage by the spring 27, attached to the arm 26, and by a corresponding spring attached to the arm 26. To the middle of the shaft 28 the arm 29 is rigidly fixed. The roller 30 is pivoted to one side of the end of that arm, and is operated upon by the inclined planes 31 and 31, and by the cam 32, in the manner hereinafter set forth. The cam 32 is fixed to the side of the arm 33, and that arm is pivoted to the standard 34, and is supported by the spring 35. The arms 36 and 37 are keyed to the shaft 38, and respectively work the rods 39 and 40, and 0 are worked by the cam 41, keyed to the shaft 15, and provided with the cam-groove 42. In that groove a roller runs, and is pivoted to the upper end of the arm 36, and thus works that aim, and, through the rock-shaft 38, also 5 works the arm 37. The rods 39 and 40 are respectively fixed to the heads 43 and 43, which heads belong, respectively, to the left in the carriage 22. a roller pivoted to its lower end, and adapted folding mechanism. by the'dog 46, keyed thereto, and that dog is alternately worked by the hook - springs 47 and 48. The upper gripper, 49, is a lever hand and the right hand box-folding mechanism. Asthose two mechanisms are in all respects counterparts of each other, we will here describe only the left-hand mechanism.

The left-hand box-folding mechanism consists of asystem of devices operating the lower gripper, and of another system of devices op- .-erating the upper gripper, and of those two grippers operating together upon the paper tubing. The lower gripper, 44, is a lever pivoted to the side of the carriage 22, so as to work crosswise thereof, and having a projection on its upper end beveled vertically at its extremity at an angle of forty-five degrees, as shown in Fig. 7, and-adapted to press downward upon the adjacent border of the top of the carriage. The gripper 44 also has an angular projection just below the line of its fulcrum, adapted to be pressed by the presser-bolt 44'*,worked by aspiral spring, 44", in a chamber The gripper 44 also has to run in a cam-groove in the periphery of the cam 45 on the shaft 45". That shaft also carries the corresponding cam, 45, which Works the lower gripper, 44, of the, right-hand box- The shaft 45? is worked pivoted to the head 43, and having at its work- .ing extremity a projection adapted to press against the adjacent beveled lower angle of .the inner end of the head 43. Between its working end and its fulcrum the gripper 49 is attached to the lower end of the spring 50, .the-npper end of which is supported by the bracket 51, fixed to the head 43. The outer end of the gripper49 is provided with aroller, 52, adapted to run upon the upper edge of the fixed rail 53. The arm 54 is journaled at distance being precisely half of the distance across the bag-bottom to be formed.

The mode of operation of this invention is as follows: The tucked-paper tubing is drawn into the machine and the end of it is thrust forward upon the carriage 22 by the drawingrolls and the cutting-rolls when the carriage is beginning its backward stroke with the presser-plate elevated to its dotted position in Fig. 1 by means of the roller 30, passing backward under the cam 32. When the crank 20 reaches a position ninety degrees back of that shown in Fig. 1, the roller 30 is released from the cam 32, but the presser-plate is still held out of contact with the paper tubing by means of the inclined plane 31 until the carriage 22'has begun its forward stroke. As that stroke eontinues,the-roller 30 is gradually released from that inclined plane, and the spring 27 and its mate are thus allowed to pull the presser-plate down upon the paper tubing, and thus to clasp it to the top of the carriage. This occurs at the moment of time when the forward end of the paper tubing reaches its most advanced position upon the carriage, and

when a bag-length is severed therefrom by the cutting-rolls. As the carriage proceeds still farther forward, the upper end of the dog 46 collides with the hook end of thehook-spring 48, and thus forces the shaft 45 to oscillate. That oscillation operates, through the camgrooves on the peripheries of the cams 45 and 45, respectively, to work the grippers 44 and 44, thus forcing them to clasp the lower folds of the tucked-paper tubing down upon the top of the carriage, as shown in Figs. 7, 8, 9, and 10. Then the cam-groove 42 so operates upon the arms 36 and 37, and thus upon the rods 39 and 40 as, in connection with the forward movement of the carriage, to raise the heads 43 and 43" and their appurtenancesup= ward upon the ends of the arms 54 and 54', respectively, and to carry them over from the position shown in Fig. 1 to that shown in Fig. 6, through the intermediate position shown in Fig. 5. The operation of the head 43 andits appurtenances duringthis movement ofthe two contrivances is the same as that of the head 43 and its appurtenances, and therefore we will describe the operation of thelatter onlv, i

When the roller 52 is lifted by the movement of the arm 54 from the rail 53, the spring 50 brings the extremity of the gripper 49 into the adjacent tuck :of' the paper tube, and thus causes that gripper to clasp the upper fold of that tuck at the place indicated by the letter bin Fig. 7, between the point of the gripper The box-1ike form of Fig. 7 is thus made and n5 maintained by the grippers 44 and 44 clasping the lower folds of the tuck of the'paper tubing just below the forward wall of the box-like form, and by the grippers 49 and 49 clasping the upper folds just above the rear border of the bottom of the box-like form. Thus the bottom of the box-like form has its forward border defined by the forward and beveled side or edge of the upper projections of the grippers 44 and 44, while its rear border .is defined by the rear extremities of the grippers 49 and 49- pressing nearly horizontally against the beveled angle of the head 43, as shown in Figs. 9 and 10. This permits the corners of the box-like form to stand substantially vertical. Thereupon the lower end of the dog 46 collides with the hook 47 and thus causes the shaft 45 to oscillate, and by oscil- ,lating to remove the grippers 44 and 44 from their hold upon the paper, and at the same time the roller 30 is forced downward by the inclined plane 31, and in turn forces the arm 29 to oscillate the shaft 28 and thus to raise the presser-plate from the paper blank, and at the same time the rollers 52 and 52 strike upon the rails 53 and 53, respectively, and thus remove the grippers 49 and 49 from all contact with the completed paper blank; or, if desired, the raising of the presser-plate and the removal of the grippers may be postponed until the box-like blank has been folded down to a diamond shape by mechanism not shown in the present application, but operating during the latter part of the forward movement of the carriage. \Vhen the carriage begins its backward stroke, the roller passes under the cam 32, which cam,having been forced downward by the roller during the forward movement of the carriage, is now forced upward by the spring 35 and prevents the return of the roller otherwise than below the cam. The backward stroke of the carriage, in connection wit-h the cam 42, operates to return the arms 54 and 54, and their respective appurtenances from the position shown in Fig.6 to that shown in Fig. 1, and thus prepares those mechanisms for a repetition of their former work. During the same backward stroke, also, the backward surface of the upper end of the dog 46 comes in contact with the forward surface of the hookspring 48, but the dog is carried under the hook without being oscillated thereby, such oscillation being prevented by the action of the springs, which press against the inner angular projections of the lever- grippers 44 and 44, respectively, through the presserbolts 44 and 44, respectively. These angular projections being at that time above the plane of the fulcrums of the lever-grippers,the springs 44 and 44 are sufficient to prevent the oscillation of the grippers, and the rocking of the shaft 45 by so slighta cause as the contact of the beveled or rounded backward surface of the upper end of the dog 46 with the rounded or beveled forward surface of the hook 48.

We do not herein claim the combination of two fingers and a spring, that combination being claimed in claim 1 of our application No. 156,866, for Letters Patent of the United States of America,-executed on the same day and filed on the same day with this specification.

We claim as our invention- 1. The combination of the carriage 22, the presser-plate 25, having the arms 26 and 26', the shaft 28, having the arm 29, the fixed inclined planes 31 and 31, and the cam 32, worked by the spring 35, all operating together substantially as described.

2. The combination of the carriage 22, the gripper 44, the cam 45, the dog 46, keyed to the shaft 45, and the hook- springs 47 and 48, adapted to oscillate that dog, all operating together substantially as described.

3. The combination of the head 43, attached to the end of the rod 39, the gripper 49, the spring 50, and the rail 53, all operating together substantially as described.

4. The combination of the carriage 22, the presser-plate 25, the grippers 44 and 44, the heads 43 and 43, and the grippers 49 and 49, all operating together substantially as described.

5. The combination of the head 43, the gripper 49, and the arm 54, all operating to clasp the upper fold of the adjacent tuck of the paper tubing at the place b, and to carry it over from the position shown in Fig. 8 through that shown in Fig. 9 to that shown in Fig. 10, all

substantially as described.

WILLIAM A. LORENZ. -WILLIAM H. HONISS. Witnesses:

ALBERT H. WALKER, FRANK A. PIERPONT.

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