All position tractor

Details All position tractor All position tractor

1981-06-16

1983-12-27

Reeves, Robert B.

Railway rolling stock

Locomotives

With rack rail engaging drive

105144, 104119, 266 67, 173 32, B23Q 900, B23K 710

Patent

active

044223846

ABSTRACT:
A tractor assembly for mounting on a track fixed to a workpiece the tractor used to support and guide a metal-working tool along a fixed path, the tractor having three wheels to engage opposite edges of the track, one of said wheels being laterally displaceable to facilitate mounting of the tractor to the track. The invention also includes rest buttons or supports to facilitate alignment and mounting of the tractor and additional roller supports engageable to said track if needed.

REFERENCES:
patent: Re28121 (1974-08-01), Gulley
patent: 117257 (1871-07-01), Cass
patent: 945140 (1910-01-01), Ruckert
patent: 2474153 (1949-06-01), Livesay
patent: 2718195 (1955-09-01), Bock et al.
patent: 3176587 (1965-04-01), Appleton et al.
patent: 3226027 (1965-12-01), Cable et al.
patent: 3259021 (1966-07-01), Appleton et al.
patent: 3374974 (1968-03-01), Furrer et al.
patent: 4158315 (1979-06-01), Kensrue et al.
Arcair Company, Travel Systems for the Welding and Cutting Industries, 1973.
M. K. Products, Inc., Pack Rat Travel Carriage System 1977.

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