Timer mechanism

Details Timer mechanism Timer mechanism

1977-11-18

1980-04-08

Scott, James R.

Electricity: circuit makers and breakers

Retarded

Clock train

200 38R, H01H 4300

Patent

active

041974360

ABSTRACT:
A timer mechanism for a clock which has a manually settable rotatable timer drum. A pair of complementarily arranged semicircular contacts which are electrically insulated from each other are adapted to actuate the timer when electrically connected to each other. Two contact fingers are provided which are urged into contact with the respective semicircular stationary contacts. A timer cam between the timer drum and a projecting lug associated with one of the contact fingers for prevention thereof from contacting one of the semicircular contacts and thereby render the timer inoperative. A flange with a cutout is provided on the timer cam which permits the one of the contact fingers to contact the semicircular stationary contact and thereby actuate the timer.

REFERENCES:
patent: 3825702 (1974-07-01), Morata et al.
patent: 4000384 (1976-12-01), Kumazawa
patent: 4045627 (1977-08-01), Kitai et al.

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