Multiple speed web drive system

Details Multiple speed web drive system Multiple speed web drive system

1977-04-28

1980-09-30

Schacher, Richard A.

Advancing material of indeterminate length

Selectively reversible material mover

226136, 226141, B65H 1726

Patent

active

042250730

ABSTRACT:
A film or paper drive system for use in photographic film or paper cutters allows the operator to position the film or paper accurately and rapidly by actuating a switch. The film or paper is driven a predetermined distance at a first rate in response to actuation of the switch. If the switch remains actuated after a first period, the film or paper is driven at a second rate. If the switch still remains actuated after a second period, the film or paper is driven at a third, higher rate.

REFERENCES:
patent: 3362601 (1968-01-01), Ford
patent: 3656673 (1972-04-01), Erickson
patent: 3887122 (1975-06-01), Sommeria
patent: 3904099 (1975-09-01), Inoue
patent: 4029250 (1977-06-01), Tall

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