Electricity: circuit makers and breakers – Retarded – Clock train
Patent
1980-05-12
1982-04-27
Truhe, J. V.
Electricity: circuit makers and breakers
Retarded
Clock train
200 38FA, 200 38CA, 200293, 3403091, H01H 4310
Patent
active
043272592
ABSTRACT:
There is disclosed a timing mechanism utilizing a digital interval timer composed of rotating drum wheels each having a cam to close electrical switches to provide a program sequence. Cam followers are constructed and arranged so that when they drop in notches of the cams the drum wheels can be rotated in either direction.
An auxiliary program is provided by a slideable drum shaped helical cam that actuates a cam follower. The drum shaped helical cam is manually axially set to provide a desired program. Both the drum shaped helical cam and the drum wheels are power driven from the same source.
The timing mechanism is packaged in a cup shaped housing having individual ribs in its side-walls to receive a frame carrying the drum wheels and the drum shaped helical cam.
REFERENCES:
patent: 3862385 (1975-01-01), Johnson
patent: 3866003 (1975-02-01), Fox
Schuder Maurice E.
Stafford Richard W.
Emhart Industries Inc.
Ginsburg Morris
Gomes David W.
Meyer Robert F.
Truhe J. V.
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