Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – By means advancing along terrain and guiding pipe or cable...
Patent
1978-10-26
1981-05-26
Corbin, David H.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
By means advancing along terrain and guiding pipe or cable...
405183, 172744, F16L 102
Patent
active
042695414
ABSTRACT:
A plow-like trench cutter is carried by a slide movable vertically between spaced upright ways rigidly coupled to a tractor. The trench cutter has a passage for supplying a line, such as cable or pipe, generally to the bottom of the cutter so that when the tractor is moved to cut a trench, the line is laid in the trench cut. A jackscrew carrying the slide can adjust the elevation of the trench cutter relative to the tractor to alter the depth of the trench. The angle of attack of the leading edge of the trench cutter can be adjusted by turning a turnbuckle spindle that extends through a nut carried by the cutter and a nut carried by the slide. The leading edge of the trench cutter is composed of a plurality of bars reciprocable transversely of their lengths.
REFERENCES:
patent: 178957 (1876-06-01), Reynolds
patent: 2755571 (1956-07-01), Clark
patent: 3065557 (1962-11-01), Pewthers
patent: 3515222 (1970-06-01), Kant
patent: 3684030 (1972-08-01), Lucero
patent: 3952532 (1976-04-01), Spearman
patent: 4119157 (1978-10-01), Schuck et al.
Beach Robert W.
Brown Ward
Corbin David H.
Winters Douglas E.
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