US980871A - Paper-folding machine. - Google Patents

Description

B. J. JENSEN.

PAPER FOLDING MACHINE. APPLICATION FILED 001221, 1909.

Patented Jan.3,191 1.

2 SHEETS-SHEET 1'.

IN VENTOI? WITNESSES Arman Era,

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B. J. JENSEN.

PAPER FOLDING MACHINE. APPLICATION FILED o0'1:.21,'1909,v

-2 SHEETS-SHEET 2.

Patented Jam 3, 1911.

ran: mains Pam-: m, 1/1- WITNESSES: fd'M "UNITED STATES PATENT @FFTQE.

IBERNHARIDT JOHAN JENSEN, OF FREDERIKSBERG, NEAR- CGPENHAGEN, DENMARK.

PAPER-FOLDING MACHINE.

To all whom it may concern:

1% it known that I, BERNHARDT Jonas Jnxsnx, of Frederiksberg, near Copenhagen, in the Kingdom of Denmark, have invented new and useful Improvements in Paper Folding Machines. of which the following is a specification.

This invention is a folding machine to be used in manufacturing capsules, paper-bags, envelops and the like, and it consists of a simple and easily adjustable mechanism, by means of which the same machine can be made to produce capsules, paper-bags, envelops and the like of any desired size.

A constructional form of the invention shown in the accompanying drawing, in which- Figure 1 represents a vertical section through the machine, Fig. 2 shows partly diagrannnatically a step in the operation of the machine. F 3 and 1 are end views of a folding cylinder in different positions of adjustment, and Fig. 5 is a side elevation of the folding cylinder.

The machine as illustrated operates upon previously cut sheets; it folds the sheets in the middle. bends the fold along one of the sides and lastly bends the fold along the edge of the bag.

As the mechanism which applies the adhesive does not come within the scope of this invention, a description of this part of the mechanism is omitted.

As shown in Fig. 1 the frame of the machine carries three horizonal shafts (3, 7 and 8. To the shaft (3 is fastened a cylinder 9 provided on its surface with an obliquely projecting, horizontally extending foldingknife 10, and at its end with a gear wheel 11. ()n the shaft 7 is rotatably mounted a c vl inder 12 provided with a gear-wheel 13 eu gaging the gear wheel 11. These wheels have the same number of teeth. For each rotation of the cylinder 9 and the gearwheel 11, in the direction shown by the arrow 14, the folding-knife is carried into a folding-slot on the drum 12. said slot being formed by a fixed jaw 15 and a movable jaw 16 the latter of which is secured at opposite ends to elbow levers 16 pivotally mounted on the spindle 1T movably mounted on the end walls of the cylinder 12. The movement of the aw 1G is caused by a roller 18 carried by the elbow lever 16 and which, when the cylinder 12 revolves, moves along the edge of a fixed guiding canrdisk 19 of such a shape,

Specification of Letters Patent.

Application filed October 21. 1909.

Patented Jan. 3, 1911.

Serial No. 523, 6 1.

that the jaw 16 is forced against the jaw 15 immediately after the knife 10 leaves the jaws, whereupon the jaws only open when the cylinder 12 assumes the position shown in Fig. 1. The cylinder 1 is moreover supplied with a folding-knife 20 ex actly like the above described foldingknife 10.

As shown in Figs. 2 to 5 the cylinder 12 is composed of inner and outer relatively adjustable parts. The inner part which is directly fastened to the axle 7, consists of two disks 21 and 22 carrying the foldingknife 20. The outer part of the cylinder 12 consists of two disks 23 and 2% which are both loosely mounted on the axle 7. A series of remo *able strips 25 connect said disks 23 and 2% together, and it is this outer part of the cylinder that carries the jaws 15 and 16, the spindle 17 being passed through large slots 17 in the disks 21, 22 and secured to the disks 241. The two parts of the cylinder are held in their respective positions by means of clamping screws 26 projecting through arcuate slots 27 in the disks 23 and 24 and entering the disks 21 and 22. By loosening the clamping screws 26, turning the two parts of the cylinder relatively to each other, removing or replacing one or more strips and finally again tightening the screws 26, the distance between the jaws 15, and 16 which are fastened to the outer part of the cylinder, and the folding-knife 20 that is fastened to the inner part, can be varied as desired. Figs. 3 and a show the two extreme positions, in Fig. 3 the greatest, in Fig. 4 the smallest distance between the knife and the folding slot. As explained below, this adjustment will have the effect of altering the size of the paper-bags.

That part of the cylinder 12 which carries the jaws 15. 16 carries also a gear wheel 13 which engages the gear-wheel 11 mounted on the shaft 6. while the part of the cylinder 12 which carries the folding-knife 20 carries another gear-wheel of the same size as the wheel 13 (and therefore not shown) and which engages with a gear-wheel 28 fixed on the shaft 8. On the shaft 8 is moreover mounted a cylinder 29 which in the same manner as the cylinder 12 is provided with a folding-slot formed by a fixed jaw 30 and a movable one 31, the latter being carried by an elbow-lever pivotally mounted on a pin 32 and provided with a roller 33 which, when the cylinder rotates, engages the edge that they pass forward between the cylinders 5') and 12. ll ere they are arrested by a special apparatus not shown on the drawing and are held by a mechanism consisting; of a rail 3? fixed on to the frame and a movable arm :38, which from below is pressed up against the rail 37. T he arm 38 is pivoted on a pin 50 and is connected by a rod 51 with a rocking; arm 53 which is ttulcruined on a pivot The arm 53 carries a roller 54; which engages a cam 55. rotated with the same speed. as the cylinders 9 and 12, and which has such a form that the arm 3? is autoinatically :torced up against the rail 37 and removed again from it once for every revolution of the cylinders 9 and 12. A guard 39 arranged below the cylinders 12 and 29. To the right of the cylinder 29 is arranged a spindle with rollers 40, and between these and the cylinder 29 are drawn chords 4-]. which rest in grooves on the cylinder.

The operation of the machine is follows The papersheets are fed forward by means of the bands 35 until they attain a horizontal position between the cylinders 9 and They are here held fast by being grasped between the movable rail 38 and the fixed rail 3?. B} the rotation of the cylinders 9 and 12 the folding-knife l0 presses the paper down between the folding aws 15. 16 on the cylinder 12 which close upon and carry the paper along while the rails 37, 38 at the same time open. d2 in Fig. 2- shows the paper in this position. The paper is thereby folded in the middle. During the further rotation of the cylinder 12 the fold ing jaws l5, 16 remain closed, and the paper which is now lying double, is carried along by the cylinder. In the position shown in Fig. 1 the movement has proceeded so far that the folding-knife 20 of the cylinder 12 presses the hindmost partof the paper between the jaws 30, 31 of the cylinder 29 which close upon the paper. The foldingjaws 15, 16 open at this moment, and the cylinder 29 pulls the paper along, whereby it is drawn back over the guard 35). The

side-told of the paper-basis then formed.

After the cylinder has made about one third of a revolution as regards the position shown in Fig. 'l, the jaws 80, 31 open automatically the chords 4C1 remove the paper from the cylinder 29, and the paper is carried along by means of endless bands in order to have the bottom-fold bent and guinmed by means of another couple of cylinders.

I claim:

In a folding machine, the combination of a rotatable shaft, a pair of inner disks lixcd to the shaft and provided with large arcshaped slots, an obliquely disposed folding knife carried by said disks, a pair of outer disks loosely mounted on said shali't at the outer face of said inner disks respectively, and provided with arc-shaped slots, clamping screws passing through the arc-shaped slots of the outer disks and into said inner disks, a spindle passing through the arcshaped slots of the inner disks and extend ing into and connecting said outer disks, elbow levers pivotally mounted on said spindle. a movable jaw carried by one end of each of said levers, a roller carried at the other end of each lover, a fixed cam-disk adapted to be engaged by said rollers, a jaw tired to said outer disks and adapted to cooperate with the movable jaw and remov able strips connecting rid outer disks; and lying between said kni'tc and jaws.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

BERNHARDT JQHAN JENSEN. l l itnesses I. l-lorrraX-Bimo, Eunns'r joi'f'rann.

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