US744637A

US744637A - Paper-cutting device.

Info

Publication number: US744637A
Authority: US
Inventors: Friedrich Soennecken
Original assignee: Individual
Current assignee: Individual
Priority date: 1901-12-02
Filing date: 1901-12-02
Publication date: 1903-11-17
Anticipated expiration: 1920-11-17

Description

UNITED STATES Patented November 17, 1903.

PATENT OFFICE.

FRIEDRICH SOENNEGKEN, OF BONN, GERMANY.

PAPER-CUTTING DEVICE.

SPECIFICATION forming part of Letters Patent No. 744,637, dated November 17, 1903.

Application filed December 2,-l901n. Serial N'0J84A73. (No modeLl purpose it was a great disadvantage that the knives easily got blunt on account of the paper always sliding over the cutting edge of the same. It also often happened that the cutting edge on account of its lying perfectly free easily got notched, and the paper in consequence thereof was torn. In order to do away with this disadvantage, I provide my new construction, which is illustrated in the accompanying drawings, in Which Figure 1 is a perspective view of the device. Fig. 2 is a vertical section of part of the same. the knife. Fig. 4 shows-a modification of the construction shown in Figs. 1 and 2. Fig. 5 is a verticalsection of this modification.

a is the frame of the device, in which'frame a plate b is fixed. In this plate 1) two rails c are situated, which rails consist of angle-iron, the vertical sides of which serve for guiding the same. a

I To the horizontal sides of the rail 0 pins d are fixed, which pins are guided in holes provided in aplate e, situated between the vertical sides. of the rails 0. Around the pins d spiral springs f are provided, which tend to press the rails oupward. The upward motion of the rails c is stopped by the pins g,

fixed in the parts h of the frame a.

The knife 2' for cutting the paper is fixed upon the plate e, as shown in Figs. 2 and 5.

Advantage'ously the upper edge of the knife is serrated, as shown'in Fig. 3. Above the knife 1), a one-armed lever 10 is situated, which is pivoted at m and the free end of which is provided with a handle a. The lever '20 consists of two rails it, between which a rail k is Fig. 3 shows the construction of;

situated. The three rails are connected to each other by means of screws, rivets, or the like in that way that between the rails k k a groove is formed for receiving the cutting edge of the knife. is angle-iron pieces Z are fixed.

The operation of the apparatus is as follows: The paper to be cut is brought upon the plate I) so that the cutting-line is situated vertically above the knife 2' wherever the lever w is pressed downward. The horizontal sides of the angle-irons Z press upon the rails 0, so that the paper is held fast between the lower surface. of the angle-irons Z and the upper surface .of the rails 0. Now in case the-lever w is still further pressed down the paper is pressed upon the knife and cut in consequence thereof.

In the construction described above the p I cutting of the paper begins near the pivot m of the lever to and gradually advances towardthe free end of the same. This has the disadvantage that the cutting of the pavper begins before the whole paper is held fast between the angle-iron pieces Z and the rails cthat is to--say, the cutting begins on one end of the lever w before the other end of the same is pressed upon the paper. In order to do away with this disadvantage and to hold the paper equally fast in all points before the cutting of the same begins, the following arrangement (shown in Figs. 4 and 5 of the drawings) is provided: The lever for pressing the paper down consists of two parts 19 and p, connected to each other by means of a bolt q. The lower part '10 is constructed in the same way as the 10 verw in the construction described above. By this lower part p being pivoted at q this part in pressing the lever downward will lie down equally upon the paper, so that the whole-paper is equally held fast before the cutting of the same takes place.

Having thus fullydescribed the nature of my invention, what I desire to secure by Letters Patent of the United States is In a paper-cuttin g device,.the combination of a flat table for taking up the paper to be out, a knife t'situated at one end of this ta- To the outside of the rails I hle, mils 0 arranged on the sides of the knife,

In testimony that I claim the foregoing as springs f for pressing the rails c upward, a

my invention I have signed myname in presrail rovided with a OI'OOVG for takin up the enee of two subscribing witnesses.

p FRIEDRICH SOENNECKEN 4 e V 4 Witnesses:

CHARLES L. SIMPLE, CARL SCHMITT.

cutting edge of the knife 2', and a handle it for swinging said rail upward around a, pivot situated at one side of the table, substantially as described.