Car shifting apparatus
AssigneeThe W. R. Stamler Corporation
InventorsEdward H. Ratcliff, Jr., Terry E. Rader
Life of this patent
Estimating the term…
Abstract
Resiliently biased dogs of a car shifting apparatus are automatically moved by double acting hydraulic cylinders to positions in which the dogs cannot engage any car moving along a predetermined path. When this occurs, movement of the dogs from these non-obstructing positions and movement of barneys, which have the dogs pivotally mounted thereon, along the predetermined path are prevented.
Claims10
In an apparatus for shifting a trip of cars along a predetermined path including first movable means and second movable means, each of said first movable means and said second movable means having engaging means for engaging a car to be shifted, means to control movement of said first movable means and said second movable means so that only one of said first movable means and said second movable means moves the car to be shifted at any time, the improvement comprising:
- moving means to move said engaging means of each of said first movable means and said second movable means from a car engaging position to an inactive position in which said engaging means cannot be contacted by any car moving along the predetermined path;
- and means to prevent movement of each of said first movable means and said second movable means unless said moving means is in a position in which said engaging means of each of said first movable means and said second movable means is in its car engaging position.
Dependencies are inferred from the claim text.