Coupled draft key puller
AssigneeHydra-Tech International Corporation
InventorsDavid Warren Reesor, David Roy Joseph Reesor
Life of this patent
Estimating the term…
Abstract
Sometimes when attempting to remove the draft key from an E-type railway car coupler, it is difficult to connect the key pulling device to the key without disconnecting the trainline. A simple key pulling device which solves this problem includes a pair of parallel hydraulic cylinders, a yoke interconnecting one end of the cylinders, piston rods extending out of such one end of the cylinders, a socket in the yoke, and separate jaws for removable mounting in the socket and for connecting the pulling device to a key, whereby the jaws can be independently mounted on the head of a key and then connected to the yoke, extension of the piston rods against the coupler causing outward movement of the cylinders, yoke and jaws to pull the key from the coupler.
Claims4
A device for removing a draft key including a shank and a head from a railway car coupler comprising a pair of fluid actuated cylinder means;
- yoke means interconnecting said cylinder means for maintaining the cylinder means in permanent parallel, spaced apart relationship;
- piston rod means extending outwardly from said cylinder means on one side of said yoke means;
- socket means in said one side of said yoke means;
- and separate jaw means for removable mounting in said socket means, and for receiving the head of a key, whereby the jaw means can be independently mounted on the head of a key and then placed in said socket means to connect the jaw means to said yoke means, and the piston rod means extended against the coupler to cause outward movement of said cylinder means, yoke means and jaw means to pull the key from the coupler.
Dependencies are inferred from the claim text.