Switch apparatus for activating switch contacts

Details Switch apparatus for activating switch contacts Switch apparatus for activating switch contacts

1979-12-04

1981-12-22

Truhe, J. V.

Electricity: circuit makers and breakers

Retarded

Clock train

200 47, 200153LB, H01H 300

Patent

active

043072690

ABSTRACT:
Apparatus is provided for the positive activation of a switching device operated to function after a predetermined number of revolutions of a drive shaft to deactivate a drive prior to the apparatus reaching a stopping point, such as in finishing machines. Two camshafts are provided, with one driven slowly and one driven rapidly through appropriate gearing from the drive shaft of the apparatus. One or more cams are spaced on each camshaft with the slow cams having a short actuating surface and the fast cams having a long activating surface. Each slow and fast activating surface engages, respectively, one end of a toggle lever, which in turn moves a thrust rod to open the switch. Each toggle lever must be engaged simultaneously with a short and a long activating surface to activate the switch.

REFERENCES:
patent: 2389350 (1945-11-01), Exner

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