US519916A

US519916A - lorenz

Info

Publication number: US519916A
Authority: US
Publication date: 1894-05-15
Anticipated expiration: 1911-05-15

Description

3 Sheets-Sheet 1.

W. A. LORENZ 86 E. "E. CLAUSSEN. PROCESS OF MAKING PIAPER BAGS.

No. 519,916. Patented May 15, 1894.

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Witnesses: Inventors; I mzcm zzmw. flwwa mad/ gm 3 SheetsSheet 2.

W. A. LORENZ & E. E. OLAUSSEN; PROCESS OF MAKING PAPER BAGS.

Patented May 15,1894.

(No Model.)

Inventors nnnnnnnnnnnnnnnnnnnnnnnnnnnnn Y.

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'(No Model.) 1 S a Sheets-Sheet 3.

W. A. LORENZ 82; E. E. GLAUSSEN.

PROCESS OF MAKING PAPER BAGS.

No. 519,916. Patente d.Ma1y 15,1894.

Big]? UNITED STATES PATEN OFFICE.

WILLIAM A. LORENZ AND EDWARD E. CLAUSSEN, OF HARTFORD, CONNECTI- CUT, ASSIGNORS TO ALBERT H. WALKER, TRUSTEE, OF SAME PLACE.

PROCESS OF MAKING PAPER BAGS.

SPECIFICATION forming part of Letters Patent No. 519,916, dated May 15, 1894.

Applicationfiled August 18,1892. SerialN0.443,360- (No model.)

To all whom it may concern.-

Be it known that we, WILLIAM A. LORENZ and EDWARD E. CLAUssEN, citizens of the United States, residing at Hartford, in the and shown in Rcissued Letters Patent No.

10,083, of April 11, 1882.

Figure l is a plan view of alength of tucked paper tube, such as has long been Well known in the art of making such bags. Figs. 2 and 3 are an edge and an end View respectively of the blank of Fig. 1. Fig. 4 is a plan view of the blank of Figs. 1, 2 and 3, after the first step of our new process has been performed thereon; and Fig. 5 is a view of the lower edge of Fig. 4. Fig. 6 is a view of the completed bag with both flaps of the diamond folded and pasted down. Fig. 7 is a plan view of the blank of Fig. 1 with various instrumentalities shown in connection therewith. Fig. 8 is a view of the lower edge of Fig. 7. Fig. 9 is a plan view of what is shown in Fig. 7, showing the blank partly folded. Fig. 10 is a view of the lower edge of Fig. 9. Figsrll and 13 are plan views representing successive stages in the folding operation, and Figs. 12 and 14 respectively are side views thereof. Fig. 15 is a plan view showing the completion of the first step in the folding of the bottom. Fig. 16 is a plan view of what is shown in Fig. 15, excepting that the folding operation is not carried quite as far as in that figure. Figs. 17 and 18 are respectively plan and side views of the blank of Fig. 16, showing instrumentalities for supporting and folding the rear flap of the diamond. Fig. 19 is a plan view of the blank, showing the rear flap folded over upon the bottom. Fig. 20 is a view of the lower edge of Fig. 19. Fig. 21 is a perspective view of the bag blank as folded in Figs. 11 and 12. Fig. 22 is a perspective view of the folded bag blank as it would appear in Fig. 15, were the blank to be released from the forward gripper shown in that figure.

the fold as shown in Fig. 15, which when fully flattened down is like that shown in Fig. 41. This folding is accomplished by instrumentalities in addition to the plate, 2, which are as follows: A front gripper, 6, is arranged in front of the blank, gripping the lower ply, 7, of the tube between the two slits, 8 and 9. A pair of triangular blades, 10 and 11, pivoted on shafts, 12 and 13, are arranged at the sides of the tube and in front of the plate, 2, in such a position that their apexes, let and 15, can be swung into the

tucks

16 and 17 of the tube 1. Attached to the outer ends of the

blades

10 and 11 are two clips, 20 and 21, shown open and pivoted to the blades, at 22 and 23. The operation of these instrumentalities in folding the bag blank is as follows: The tucked tube, 1, is placed upon the table, 19, beneath the plate, 2, with enough of its forward end projecting to make the bottom of abag. The lower ply of the tube is gripped by the gripper, 6, and held to the bed, 19; then the triangular blades, 10 and 11, are swung upon their pivots, 12 and 13, into the

tucks

16 and 17, so that the sides 24 and 25 of the

blades

10 and 11 correspond in position with the sides 3 and 5 of the plate 2; while the

sides

26 and 27, nearly coincide in position with the dotted lines 28 and 29. In this position, and while the plate 2 is in its raised position, the

blades

10 and 11 are rocked, with their clip ends upward, on axes corresponding with the

sides

26 and 27 of the blades, and also corresponding with the diagonal dotted lines 28 and 29. These blades are shown partly raised in Figs. 9 and 10; which motion of the blades operates to raise the upper plies, 30 and 31, of the blank. These plies are raisedstill farther by the upward swinging motion of the

blades

10 and 11, as shown clearly in Figs. 11 and 12. In Fig. 11, however, the upper clip ends of the blades are omitted for greater clearness. In this position the blank assumes the peculiar shape having been stretched flat by the blades 10.

and 11, in connection with the plate 2. This plate 2 being cut away at 3 and 5 at an angle of about forty-five degrees, holds the upper plies, 30 and 31, while the paper is being stretched over the edges, 24 and 25 of the blades lO'a'nd 11. When the inside triangular folds, 33 and 34, are fully stretched out, the blades and 11 are rocked backward from the position shown in Figs. 11 and 12, to that shown in Figs.13 and 14 and then Without stopping, to that shown in Fig. 15. During the first part of this backward swing of the

blades

10 and 11, the clips and 21 are swunginward against the edges, 24 and 25, of the

blades

10 and 11 so as to clip the paper at and 36, thereby holding it during the downward swing of the

blades

10 and 11. During this downward swing, the upper plies, 30 and 31 swing inward under the

blades

10 and 11, as shown clearly in Figs. 13 and 14. This folding completes the diamond 37 which when fully flattened, is like the diamond 38, in Fig. 4. During the making of the fold just described, the plate 2 may bedropped upon the blank 1,-holding it firmlyto the bed, 19; or it may be raised slightly therefrom. Paste is then applied to the diamond, as shown at 39, and the bag is then completed by folding over the flap 40, upon the diamond 38, and then folding the flap 41 over upon the flap 40, and pressing it together upon the bottom of the bag, thus completing it, as shown in Fig. 6. By using the front gripper,6,during the diamond folding of the blank, the forward end thereof will be held flat, but it is not necessary to use this front gripper in connection with the other instrumentalities. In this case, during the foldingjust described, the

blades

11 and 12, with their clips, 20 and 21, are raised and lowered,

in the manner before described, and. co-operate with the plate 2 in folding the inside triangular folds and laying them down upon the body of the blank; after which,instead of assuming the diamond form, 37, the blank assumes a box-like form 42. This box-like form may be collapsed into the diamond form by pressing inward and downward the two sides, 43 and 44. A further modification in the pro- .cess maybe made by preventing the rear flap, 40, from being folded down flat during the 17 and 18, a creaser-blade, 46, is brought down upon the body of the blank at the folded line, 47, and paste-is applied at 48; then the blade 46 is withdrawn, while the blade is pushed forward, folding over the flap 40 as shown in Figs. 19 and 20. The front flap, 41, is then folded over upon the bottom of the blank, and the bag is thus completed.

We claim as our invention- That process of making apaper bag from a tucked tube which consists in turning the upper plies of each of the tucked sides up substantially at right angles to the body of the tube and to each other upon lines corresponding to the angular edges 3 and 5, thus stretching open the inside triangular folds, then folding those upturned plies and folds down upon the body of the blank producing the diamond form, and then completing the bag by folding the end flaps, all substantially as described.

\VILLIAM A. LORENZ. EDWARD E. OLAUSSEN. lVitnesses:

RALPH M. GRANT, LEWIS N. CRANE.