Strachan & Henshaw Limited

David Arthur Evans

A rail-car positioner comprises a carriage on a track running alongside and parallel to the train track and an elongate arm on the carriage is transversely displaceable to enter between a pair of coupled rail-cars of the train and connect the positioner drivingly to the train. The arm is extended substantially axially, from a retracted position on the carriage, in a preferably generally horizontal first direction to introduce an end of the arm between the pair of rail-cars, and said end is then engaged with the rail-cars' coupling by displacing it in a second direction transverse to the first direction.

Positioning means

A rail wheel gripper for holding or retarding a rail vehicle has opposed gripper mechanisms that engage a wheel between them. Each mechanism comprises a carrier arm for a gripper member and upper and lower pivot arms connected to the carrier arm controlling the path of movement of the gripper member. Each mechanism is so arranged, and a drive device co-operates with it, as to exhibit a mechanical advantage with increased gripping force when the opposed gripper members reach their operative positions, and a mechanical disadvantage with magnified displacement of the members when they are remote from their operative position.

Growing community of inventors

Bristol, United Kingdom

David Arthur Evans