Electricity: circuit makers and breakers – Multiple circuit control – Operating means
Patent
1975-07-24
1977-03-22
Scott, James R.
Electricity: circuit makers and breakers
Multiple circuit control
Operating means
200 11TC, 200153P, H01H 300, H01H 1954
Patent
active
040138470
ABSTRACT:
Tap changing apparatus for connection to the windings of a three-phase power transformer. The tap changer includes a mounting board on which three sets of stationary contacts, arranged in a circular pattern, are mounted. A rotating contact assembly is associated with each set of stationary contacts and may be pivoted around the center of the stationary contact set for engagement with one of the stationary contacts. An operating bar extends across each set of stationary contacts and is coupled to the rotating contacts by rack and pinion assemblies. When the operating bar is moved in one direction, the rotating contacts are turned in a counterclockwise direction. When the operating bar is moved in the other direction, the rotating contacts are turned in the clockwise direction. The operating bar is moved by a rack and pinion assembly which is connected to a rotating shaft.
REFERENCES:
patent: 2177109 (1939-10-01), Hill
patent: 2980901 (1961-04-01), Morris et al.
patent: 3155782 (1964-11-01), Wilson, Jr.
patent: 3396248 (1968-08-01), Wilson, Jr.
McHale C. L.
Scott James R.
Westinghouse Electric Corporation
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