High dog indexer
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 20, 1998
Grant Date -
N/A
app pub date -
Dec 29, 1995
filing date -
Dec 29, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Railway car indexers are disclosed that include a high dog engaging member for engaging a bogey frame behind a railway axle. The high dog is pivotally attached to a dog carriage which is slidably inserted in an indexer track juxtaposed to the railroad track. The high dog is actuated between a raised and a lowered position by a lever arm which is pivotally attached to the dog carriage and a spring-piston cylinder connected to the high dog and the lever arm. The dog carriage is moved back and forth in the indexer track to engage the lever arm and high dog with the bogey frame to move the railway cars. In a reversing indexer, the dog carriage includes opposing high dogs for engaging the bogey frame behind either axle for moving the railway cars in either direction. The single direction or reversing direction indexers include a dog carriage on one or both sides of the railroad track. The spring-piston cylinder is built to urge the high dog to the raised position or the lowered position without damaging the dog carriage if the high dog is prevented from moving.
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