Method and apparatus for selecting the bias upon stacks of sheet

Details Method and apparatus for selecting the bias upon stacks of sheet Method and apparatus for selecting the bias upon stacks of sheet

1987-04-23

1988-07-19

Yost, Frank T.

Cutting

Processes

83 71, 83 72, 83364, 83452, 83461, 269329, B26D 704

Patent

active

047577312

ABSTRACT:
A guillotine type cutting machine wherein the length of cuts to be made in stacks of sheets determines the force with which a hold-down device bears upon a stack in the course of the cutting operation to prevent stray movements of the sheets. The force varies as a function of the length of the contemplated cuts and is regulated in such a way that the pressure of the hold-down device per unit area of a larger or smaller stack containing identical numbers and types of sheets is the same.

REFERENCES:
patent: 2122186 (1938-06-01), Southworth
patent: 2570873 (1951-10-01), Seybold
patent: 2621733 (1952-12-01), Seybold
patent: 2781844 (1957-02-01), Pearson et al.

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