Timer clock

Details Timer clock Timer clock

1977-04-04

1978-05-30

Weldon, Ulysses

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

58 855, 58 395, 200 35R, 58 2113, G04F 302

Patent

active

040916081

ABSTRACT:
A timer clock of the type having a time-of-day recording mechanism, a switch electrically connectible to an electric device, an adjustable timer wheel for controlling the switch, and a power source operably connected to drive said time-of-day recording mechanism and the timer wheel. The wheel has a first set of teeth defining a second timing period which is more extended than the first timing period. The power source includes a motor and a drive shaft driven by the motor. The drive shaft carries a first gear adjacent one end thereof for actuating the second set of teeth. The first gear is engageable with the second set of teeth to drive the timer wheel during the second timing period. The timer wheel carries gearing for actuating the switch at the end of a timing cycle. The drive shaft carries a pinion engageable with a second gear, the latter comprising part of the time-of-day recording mechanism. The pinion carries drive teeth adjacent said one end of the drive shaft for driving the first set of teeth during the first timing period, preceeding the driving of the second set of teeth by the first gear. The drive shaft is mounted at its other end, opposite the one end, in a manner permitting swinging movement of the one end relative to the timer wheel.

REFERENCES:
patent: 2620872 (1952-12-01), Wyman
patent: 2864443 (1958-12-01), Niemand
patent: 2973659 (1961-03-01), Gallagher et al.
patent: 3431720 (1969-03-01), Ehner et al.
patent: 3534545 (1976-10-01), Oster et al.
patent: 3941000 (1976-03-01), Allison
patent: 4020625 (1977-05-01), Mahon et al.

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