Crossing undercutter and switch undercutter mounted on tractor-t

Details Crossing undercutter and switch undercutter mounted on tractor-t Crossing undercutter and switch undercutter mounted on tractor-t

1974-04-04

1976-07-06

Burr, Edgar S.

Excavating

Railway graders

171 16, E01B 2704, E02F 308

Patent

active

039673952

ABSTRACT:
An undercutting apparatus for removing ballast and other material from beneath railroad ties, particularly ties in areas that are difficult to undercut with conventional equipment. The apparatus includes a carrier capable of moving over ordinary ground. An undercutter in the form of a toothed chain moving around the periphery of a plate member is rigidly mounted to a first frame member. A drive motor is provided for driving the chain by means of a sprocket. The first frame member is mounted on a second frame to pivot about a vertical axis with respect to the second frame. A motor and interconnecting gears are provided to pivot the first frame member as desired. The second frame is mounted on a travelling frame mounted on a vertically oriented track frame. Hydraulic cylinders pivot the second frame means as desired. The track frame is mounted to the carrier to transport the undercutter and provide it with the necessary power.

REFERENCES:
patent: 2847134 (1958-08-01), Slate
patent: 3019536 (1962-02-01), Kershaw
patent: 3436848 (1969-04-01), Peppin et al.
patent: 3624936 (1971-12-01), Yard

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