DE40784C - Corner rounding machine with automatic pressing - Google Patents

Description

IMPERIAL

PATENT OFFICE.

. CLASS 11: Bookbinding.

On the prism U _{1 of} the stand α , the slide b with the cutting plate c is guided above, the slide d with the knife e below. Both carriages are f ¹ only by the lever and the drawbar g, as seen from the drawing, connected to each other. The feed table h rests on the bracket i, which is firmly screwed to the stand α.

The process is as follows: After the cards k to be rounded are placed in a suitably thick fabric on the feed table h against the stops H ₁ and h ₂ , the lever f is pulled. Here, the upper carriage b first goes down until the cutting board c is firmly on the cards and praises them; then the lower slide d rises, the knife e cutting upwards and sweeping past the cutting plate c.

Since roundings of different radii are made on a machine, the three main parts in question: knife, cutting plate and feed table must be able to be quickly and precisely repositioned. For this purpose the cutting plate has a square basic shape and is rounded at some or all four corners conforming to the associated knives so that the sides of the square are exactly tangent to the arches. One now only has to move the feed table h so that the stops H ₁ and K ₂ touch the cutting plate, whereby the edges k ₁ and k. _{2 of} the inserted cards k touch this arc and thus have the correct position. During the adjustment, the knife e, which can only be moved in the longitudinal direction, is first fixed by means of the hook screw I , then the cutting plate c is held with its rounding against the knife cavity and tightened by the screw m on the slide head b _x; last of the feed table is, as mentioned above, held with the stops Zz ₁ h ₂ against the cutting plate c and the screw η i found on the hanger.

Slide head b ₁ and bracket i have enlarged bores for the screws m and n, depending on the necessary clearance, and are slotted at the front so that the cutting plate and feed table can be easily removed.

Claims (1)

PATENT claims: The construction and arrangement of the three main parts: knife e, cutting plate c and feed table h with regard to their mutual adjustability, essentially in such a way that the cutting plate c is of a square basic shape at the corners, conforming to the associated knives, so that the square sides are rounded Tangiren the arches to serve the feed table h as a direction, so that its stops \ and h ₂ also the arches of the cutting plate respectively. tangling of the knife.