G & W Electric Company

James W Fox

Kenneth P Banas

Ronald J Moery

Robert J Hill

A high voltage multi-position type three phase electrical switch having stationary and movable contacts which are supported, respectively, on relatively fixed and movable contact supports internally of a switch casing. The contact supports are interchangeable and are made of a nonconductive molded plastic. The contact supports are adapted to selectively support either conductive contact support bars on which relatively stationary spring contacts are mounted, or contact blades which, in association with movement of a movable contact support, may be closed into spring contacts carried on an associated relatively fixed contact support. The movable contact blades comprise flexible braided electrical conductors having conductive contact sleeves swaged on their opposite ends so that the contact end portions define contact bars which are substantially solid in transverse cross section. In a two-position embodiment, the contact bar ends of each contact blade are adapted, respectively, for fixed connection to the bushing connectors of service entrance terminals and for movement into closed circuit with corresponding spring contacts mounted on the fixed contact support. In a three-position embodiment, a third molded contact support is fixed within the casing and has similar contacts associated therewith to enable closed circuit connection of alternative service entrance terminals.

Switch apparatus

A novel high voltage power cable terminator of the type having a rigid insulating housing made of an inorganic material is provided which employs a pre-stretched elastomeric stress relief tube mounted on a removable core prior to installation to facilitate installation of the terminator upon a prepared end of a high voltage cable. The removable core is a generally cylindrical, helically grooved tubular structure. The stress relief tube is supported coaxially in a stretched condition upon the exterior of the core prior to installation. To install the stress relief tube on the cable, the prepared end portion of the cable is positioned within the hollow interior of the core, and the core is then removed to allow the elastomeric stress relief tube to contract and grip the peripheral surface of the portion of the cable where stress relief is desired.

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Orland Park, IL, United States of America

James W Fox