Timer with delayed start capability

Details Timer with delayed start capability Timer with delayed start capability

1981-09-11

1983-11-15

Scott, J. R.

Electricity: circuit makers and breakers

Retarded

Clock train

200 38R, H01H 4300

Patent

active

044157843

ABSTRACT:
The timing (program) cam is driven at timing speed through a gear train which includes a clutch. When a delayed start is desired the timing cam must be positioned at the start of a cycle so a lever sensing the cam position will move a tiltable jackshaft to an active position in which the worm gear on the shaft can be engaged by a manually set ratchet segment while a cam moving with the segment de-clutches the timing speed drive. The worm gear rotation drives the ratchet back to zero at which time the clutch is engaged and normal timing begins. The number of ratchet teeth engaged with the worm gear determines the length of the time delay.

REFERENCES:
patent: 2920153 (1960-01-01), Horstmann
patent: 3372597 (1968-03-01), Dotto
patent: 3700837 (1972-10-01), Schulze-Berge

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