H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/327
H01H 3/34 (2006.01) H01H 3/30 (2006.01) H01H 3/42 (2006.01)
Patent
CA 1089521
CIRCUIT BREAKER WITH OPERATING MECHANISM HAVING OUTBOARD CAM AND RATCHET ABSTRACT OF THE DISCLOSURE A circuit breaker is taught having an operating mechanism with two parallel, spaced apart support members. A circular shaft having keyed ends is supported in the parallel support members such that the keyed ends extend outboard of the two support members. On one keyed end is disposed a correspondingly keyed cam. On the other keyed end is disposed a ratchet wheel which is spaced from the keyed portion so that it may turn independent of the shaft in one direction. Also disposed on the same end as the ratchet is a correspondingly keyed lever which rotates synchronously with the cam. The lever may interlock with the ratchet to be rotated thereby. Both the lever and cam have parallel connecting rods extending therefrom which are perpendicular to the shaft and generally parallel to the support plates. The rods are attached at one end thereof to a closing spring yoke. A closing spring is provided between the yoke and a fixed member which is perpendicular to and supported by the previously described support members. Rotation of the ratchet in the proper direction causes movement of the connecting rods for compressing or charging the contact closing spring. Correspondingly, discharge of the spring moves the connecting rod to rotate the cam. The cam is interlinked by way of a cam follower to a jack shaft which in turn is interconnected with separable main contacts for opening and closing the contacts. A separate opening spring is interconnected with the jack shaft for the opening operation. -1-
275019
Mcconnell And Fox
Westinghouse Electric Corporation
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