Track mounted welding head base having cam pivoted drive assembl

Details Track mounted welding head base having cam pivoted drive assembl Track mounted welding head base having cam pivoted drive assembl

1985-11-08

1987-11-03

Reeves, Robert B.

Railway rolling stock

Locomotives

With rack rail engaging drive

173 31, 228 29, 104119, B23K 3702, B61B 1304

Patent

active

047036982

ABSTRACT:
A welding head base to facilitate the mounting of a welding head assembly thereon for the purpose of welding a joint between abutted ends of a pipe. The base is mounted on the edges of a thin, sheet material, continuous band track and is capable of low frictional movement, through a series of wheel assemblies, relative to the track. Each wheel assembly includes a wheel with each wheel including an enlarged flange to facilitate the mounting of the welding head base onto the track. Mounted on the fixed section of the base is a sprocket assembly with a sprocket wheel that is to be rotatably driven by a motor. The sprocket is to engage with a series of gear teeth formed within the track. The sprocket assembly is to be movable from an operating position (in engagement with the track) to a retracted position (spacing the sprocket wheel from the track). Movement of the sprocket assembly is caused through the use of a manually operated cam assembly. With the sprocket assembly in the operating position, the cam assembly is pressed against a spring which in turn exerts a continuous bias tending to maintain the sprocket wheel in continuous contact with the track.

REFERENCES:
patent: Re28121 (1969-12-01), Gulley
patent: 3753525 (1973-08-01), Homes
patent: 3844468 (1974-10-01), Nelson et al.
patent: 4092928 (1978-06-01), Clavin
patent: 4132338 (1979-01-01), Bove et al.
patent: 4158315 (1979-06-01), Kensrue et al.

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