Contact assembly for selector of step transformer

Details Contact assembly for selector of step transformer Contact assembly for selector of step transformer

H - Electricity

01

F

H01F 29/02 (2006.01) H01H 9/00 (2006.01) H01H 11/06 (2006.01) H01H 19/58 (2006.01)

Patent

CA 2083096

Abstract of the Disclosure A step-transformer drum formed with throughgoing apertures each centered on a respective axis has a contact assembly in each aperture having an insulating washer lining the aperture and having an inside part lying on an inside surface of the drum and an outside part lying on an outside surface of the drum. A stud has an enlarged head bearing outward on the inside washer part and a shaft projecting through the washer past the outside washer part and formed outside the outside washer part with a transversely throughgoing hole. A pin extends transversely through the hole and bears inwardly on an out- wardly directed ramp so that rotation of the stud and pin in one di- rection relative to the structure makes the pin ride up on the ramp and tightens the stud in the aperture and opposite relative rotation loosens the stud.

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