Punch check apparatus

Details Punch check apparatus Punch check apparatus

1975-06-09

1977-03-22

Meister, J. M.

Selective cutting (e.g., punching)

With means to impose randomly actuated control of...

Stopping means

G06K 102

Patent

active

040132161

ABSTRACT:
In a card punch machine there is provided a photoelectromechanical punch checking system. A shutter is mounted on each punch pin in the card punch machine and movement of each shutter is monitored by a photoelectronic sensor. Signals from the electronic sensors are compared with data employed to select and actuate the punch pins to provide verification that the data signals have caused the selected punch pins to be actuated through a punching operation cycle.

REFERENCES:
patent: 3069075 (1962-12-01), Sallach
patent: 3436010 (1969-04-01), Spanjersberg
patent: 3448247 (1969-06-01), Jones, Jr.
patent: 3452926 (1969-07-01), Bradley
patent: 3474956 (1969-10-01), Cain
patent: 3795791 (1974-03-01), Boyer

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