Drum switch construction

Details Drum switch construction Drum switch construction

1990-11-02

1992-01-28

Broome, Harold

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

200 24, H01H 1956, H01H 2176

Patent

active

050845977

ABSTRACT:
An electrical switch including a frame defined by a base and two opposing end walls extending substantially perpendicular from the base, and a spindle journalled in the line holes in the end walls to allow for oscillatory movement of the spindle. A plurality of resilient stationary contacts arms are releasably secured to the base and are cooperable with the moveable contact. A cam having a plurality of concave recesses on its periphery is positioned on the spindle. A bearings surface is biased against the cam. The biasing is accomplished by a spring positioned in a housing mounted on the frame. There is also a handle connected to the spindle for rotating the spindle so that the bearing surface may engage the cam recesses to releasably lock the spindle in a plurality of positions, thus resulting in the stationary contacts arm and moveable contact being selectively maintained in different electrical connection relationships.

REFERENCES:
patent: 2107045 (1938-02-01), Rasmussen
patent: 2108883 (1938-02-01), Furnas et al.
patent: 2137481 (1938-11-01), Furnas et al.

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