Electricity: circuit makers and breakers – Retarded – Clock train
Patent
1974-07-19
1976-04-13
Scott, James R.
Electricity: circuit makers and breakers
Retarded
Clock train
74 35, H01H 708, F16H 574
Patent
active
039506240
ABSTRACT:
A multiple switch automatic reset timer in which the switches are located in the back of the timer and have operators angularly spaced about a main bearing axis. A clutch operator is also angularly spaced from the switch operators. A spring return timing gear on the main bearing axis drives a spring tensioner also carried on the main bearing axis. This stores power in the spring which is released at the timed-out point for driving a cam wheel carried on the main bearing axis. This actuates the switch operators and also releases the clutch allowing the timing gear to reset. The cam wheel is maintained in the timed-out position by a latch engaging the spring tensioner. This latch is released by a solenoid operated wheel carried on the main bearing axis. This wheel may also operate the clutch and one or all of the switches. The wheel configuration determines the type of action given by the timer. Provision is made for on delay, off delay, interval, instantaneous switch operation and many other combinations.
REFERENCES:
patent: 2957962 (1960-10-01), Hanstein et al.
patent: 3238328 (1966-03-01), Harris
patent: 3489015 (1970-01-01), Harris
Deltrol Corporation
Scott James R.
LandOfFree
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