Device for cutting loose hard ground material

Details Device for cutting loose hard ground material Device for cutting loose hard ground material

1978-03-08

1980-05-27

Crowder, Clifford D.

Excavating

Peat excavators

37 56, 37 72, 37 73, E02F 390

Patent

active

042043476

ABSTRACT:
Hard ground beneath a water surface is controllably cut away by a device ch includes a buoyant body having a work support depending therefrom and forced against the hard ground so as partially to support the weight of the body. A cutter assembly is releasably clamped to the work support and the clamp has arms connecting it to a short, rigid carrier which mounts a rotatable cutter head at one end. The arms allow the carrier to swing about a horizontal axis and a vertical axis and hydraulic motors are provided to sweep the carrier about such axes in controlled fashion. A winch on the body allows the carrier to be clamped at desired vertical positions on the work support.

REFERENCES:
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patent: 929613 (1909-07-01), Lytton
patent: 1962363 (1934-06-01), Reimel et al.
patent: 2762136 (1956-09-01), Bell
patent: 3171219 (1965-03-01), Kaufmann et al.
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patent: 3683521 (1972-08-01), Sloan et al.
patent: 3755932 (1973-09-01), Cargile, Jr.
patent: 3808716 (1974-05-01), Verbeek
patent: 3893249 (1975-07-01), Wolters
patent: 3983707 (1976-10-01), Lezgintser
patent: 4073078 (1978-02-01), Leitz

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