Patent ID: 7934457

Claim:
A railcar positioning system comprising: (a) a pair of spaced, trackside railcar-moving arrangements positioned outside and parallel to the rails of a railroad track, each said railcar-moving arrangement further comprising: (1) a spaced trackside guideway located next to one of the railway rails, (2) a plurality of spaced, connected dog carriages mounted for operation together in said guideway, each dog carriage carrying a pusher dog mounted on said carriage, (3) a dog carriage moving device consisting of a single reciprocating hydraulic cylinder associated with each of said pair of spaced, trackside railcar-moving arrangements for moving said plurality of spaced, connected dog carriages, (b) a hydraulic power unit connected to operate each of said cylinders optionally individually or together; and (c) a control system associated with said power unit for controlling the operation of said positioning system such that said positioning system may be optionally operated both as an indexer and as a progressor.