Time indicating apparatus and transmission mechanism therefor

Details Time indicating apparatus and transmission mechanism therefor Time indicating apparatus and transmission mechanism therefor

1976-03-26

1977-08-30

Witkowski, Stanley J.

Registers

Coded record sensors

Particular sensor structure

74142, 235134, 346 91, G04B 1902, G06C 1526

Patent

active

040445488

ABSTRACT:
A time clock is provided which includes a minute wheel that is advanced every minute and an hour wheel that must be advanced every hour, wherein a deflecting pawl device is utilized, in place of gears, to connect the wheels. Both wheels have ratchet teeth, and a pawl that oscilltes once each minute to advance the minute wheel. The minute wheel, which rotates once every hour, has a cam that moves beside the pawl to deflect it sidewardly so that the pawl engages a tooth on the hour wheel. Thus, at the next oscillation of the pawl, both wheels are advanced. The minute wheel bears the numbers 0 through 59, while the hour wheel bears the numbers 1 through 12 repeated five times, so that both wheels have 60 numbers.

REFERENCES:
patent: 2596370 (1975-05-01), Bush
patent: 3830053 (1974-08-01), Koide et al.
patent: 3931705 (1976-01-01), Iwaki et al.

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