Coupled draft key puller

Details Coupled draft key puller Coupled draft key puller

1996-04-16

1997-12-30

Eley, Timothy V.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

B23B 1902

Patent

active

057016496

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.

REFERENCES:
patent: 2507003 (1950-05-01), Gagne
patent: 2735649 (1956-02-01), Swallert
patent: 2797889 (1957-07-01), Talboys
patent: 2807080 (1957-09-01), Mathews, Sr.
patent: 2874933 (1959-02-01), Feucht
patent: 3066913 (1962-12-01), Leeson
patent: 3069761 (1962-12-01), Sommer
patent: 3744116 (1973-07-01), Peterson
patent: 3797097 (1974-03-01), Peterson
patent: 3908258 (1975-09-01), Barty
patent: 5129133 (1992-07-01), Reesor
patent: 5233740 (1993-08-01), Chen

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