DE40065C - Paper punch for folders, letter folders and the like - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 7O: Writing and drawing materials.

Fatentirt in the German Empire from November 14, 1886.

This hole punch differs from others mainly in that the cutting pins α and a ^{1 are brought} into connection with the pressure bracket b and are loosely suspended in the guide heads c and c ¹ . This device is intended, that the cutting pins without clamping slide up and down, not settle due to disparities in the movement of the pressure stirrup in the guides and keep y in the vertical direction in the holes of the metal matrices and y ^l penetrate, whereby the complete penetration of the pieces of paper is guaranteed.

In Fig. 7 and 8 the cutting pins perforated at the top are so loosely hooked into the ends of the pressure bracket provided with a vertical slot d by means of pin e that if the two ends of the pressure bracket fall unevenly, the cutting pins retain their vertical position and thus before jamming "are secure in the guide heads. The construction in FIGS. 9 and 10 has the same effect. Here the ends of the pressure bar are provided with a horizontal slot /". The lower tab g has a slot in which the cutting pin α hangs loosely. Head h and pin i prevent the cutting pins from falling out.

The loose pressure bracket leads in Fig. 1 to 3 between the rods k and k \ The pins / and l ^l limit the upward movement of the pressure bracket, while the pins m and Ot ¹ , which the bracket meets when punching, the limit for Form downward movement. At the same time, these pins should prevent excessive compression of the springs η and ra '. These springs lift the cutting pins so high that after punching they step back into the guide heads and strip off the perforated paper. The downward movement of the pressure bracket is done by hitting the button of the same.

In Fig. 11 and the simple hole punch, Fig. 12, the bracket b leads around the pins 2 a and is limited in its movement upward by the heads 2 b, down by the lugs 2 c of the pins 2 a. .

The container 0, FIGS. 1 and 4, serves to catch the punched-out pieces of paper which can be poured out through an opening p, FIGS. 3 and 6.

In Fig. 4, 5 and 6, the pressure bracket is attached to an arm q , which is provided with a hinge r and is limited in its upward movement by the flap s. The hinge is so high that the secant of the small circular arc which the ends t of the pressure bracket describe is vertical, whereby the most correct pressure is exerted on the cutting pins. In this construction, too, the pins m and m ¹ limit the downward movement of the pressure bow and help to protect the springs η and n ¹ .

Claims (1)

Patent Claims:
At holes: ι. The upper connection with the pressure bracket b , hanging loosely in the guide heads c and c ^{1 and sagging} the spring η and n ^l raised cutting pins α and a ¹ . The cutting pins α and a ¹ , FIGS. 7 and 8, which are loosely suspended from pins e at the vertically slotted or perforated ends of the pressure bracket b. Hang the horizontally slotted ends of the pressure bracket b with the loosely in the vertically slotted lower tab g. the cutting pins a protected from falling out by the head h and by the pin i. The guide pins kk ¹ and 2 a with head 2 b and attachment 2c, the limiting and protective pins m and m ¹ and the container o. The connection of the pressure bracket b with the arm q with hinge r and the limiting tab 5. For this purpose ι sheet of drawings.