Mechanical counter

Registers – Operating devices – Plural registers

Patent

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Details

235132R, 235132A, 355 14, G06M 302

Patent

active

RE0292745

ABSTRACT:
A counter device includes an outer annular dial which may be set to a desired detent position to indicate, for example, the number of copies required from a copying machine. A push button positioned at a null position within the annular dial may then be depressed to operate a control circuit initiating operation of the copying machine and simultaneously engage the counter mechanism of the counter device. The push button then moves incrementally to register with the setting on the annular dial, whereupon the counter device automatically terminates operation of the copying machine by opening the control circuit and simultaneously resets the push button to the null position.
The internal mechanism of the counter device includes a ratchet and pawl operated by an external drive from the copying machine. The ratchet and pawl are advanced in incremental steps to register with the preset detent position of the annular dial. The ratchet is then released and returned to its initial or the null position. Release of the ratchet simultaneously operates a switch to terminate operation of the ratchet advance mechanism. The device also includes a setting which renders the advance and counting mechanism inoperative so that the push button will be maintained in a depressed position to command operation of the copying machine until manually released.

REFERENCES:
patent: 3710079 (1973-01-01), Cralle, Jr. et al.
patent: 3731874 (1973-05-01), Fowlie
patent: 3873198 (1975-03-01), Ettelbruck et al.

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