Westinghouse Air Brake Company

William G Greenaway

Lawrence R Streitman

Howard D Huss

James M Zemyan

Roger V Lewis

A manual shifting apparatus for an automatic empty/load brake device used in conjunction with a pneumatic braking system provided on a transport vehicle having a truck and a car body mounted thereon through a resilient suspension system. The automatic empty/load brake device has a sensor arm which moves through a range of positions upon the application of a braking force to the transport vehicle by the pneumatic braking system. The range of positions includes a first range of positions indicating the transport vehicle as being in a loaded condition and a second range of positions indicating the transport vehicle as being in an unloaded condition. The automatic empty/load brake device applies a substantially reduced pneumatic braking force to the transport vehicle whenever the sensor arm is in the second range of positions. The manual shifting apparatus is adapted for mounting on the transport vehicle adjacent the automatic empty/load brake device and includes a manual shifting member movable between a first disposition and a second disposition. In the first disposition, the manual shifting member confines the sensor arm of the automatic empty/load device to the first range of positions and excludes the sensor arm from travel into the second range of positions. In the second disposition, the manual shifting member permits the sensor arm of the automatic empty/load device to travel into the second range of positions.

Manual empty/load device

A method of forming a rubber seal containing a metal insert where a transfer mold having a cavity is provided with a post and a plurality of upwardly extending arcuated bosses on the base of the cavity. A metallic insert is disposed on the bosses and a flowable rubber material forced into the mold cavity and envelopes the metallic insert to form the rubber ring seal. The rubber seal produced has a plurality of spaced, aligned arcuate grooves in a flat planar surface of the base extending inwardly towards the embedded metallic insert.

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North Huntington, PA, United States of America

William G Greenaway