Coupler draft key puller

Details Coupler draft key puller Coupler draft key puller

1991-04-22

1992-07-14

Watson, Robert C.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

B23B 1902

Patent

active

051291339

ABSTRACT:
Removing the draft key from a so-called E-type railway car coupler can be a difficult job. A relatively simple tool for removing a key of the type including a flanged head includes a pair of parallel hydraulic cylinders, a yoke interconnecting one end of the cylinders, piston rods extending out of the other end of the cylinders, a sleeve in the yoke parallel to the cylinders, an elongated shaft for removable mounting in the sleeve, a latch for retaining the shaft in the sleeve, and a socket in the outer free end of the shaft for receiving the head of the key, whereby with the shaft in the sleeve and connected to a key, extension of the piston rods against the coupler pocket pushes the cylinders, and consequently the sleeve and shaft outwardly to pull the key from the coupler.

REFERENCES:
patent: 2507003 (1950-05-01), Gagne
patent: 3744116 (1973-07-01), Peterson
patent: 3797097 (1974-03-01), Peterson

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