Apparatus for automatic microphotography

Details Apparatus for automatic microphotography Apparatus for automatic microphotography

1975-03-25

1977-08-30

Aegerter, Richard E.

Sheet feeding or delivering

Feeding

Pack holders

271 31, B65H 704

Patent

active

040450163

ABSTRACT:
An apparatus for sensing the height of a stack of cards is disclosed. The apparatus includes a bar having a projecting portion that is adopted to engage the upper surface of the uppermost card in the stack; a spring that biases the bar in a position so that it does not engage the stack; and a solenoid which displaces the bar downward in response to an actuating signal. Both means for urging the projecting portion of the bar into contact with the upper surface of the uppermost card in the stack as the bar is urged downward by the solenoid and means responsive to the position of the bar to provide a signal that indicates the height of the stack, are included.

REFERENCES:
patent: 2467493 (1949-04-01), Pabich
patent: 3440801 (1969-04-01), Prince et al.
patent: 3580567 (1971-05-01), Hashimoto
patent: 3716226 (1973-02-01), Kistner

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