Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – By means advancing along terrain and guiding pipe or cable...
Patent
1977-03-24
1978-09-19
Shapiro, Jacob
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
By means advancing along terrain and guiding pipe or cable...
37193, 405181, E02F 512
Patent
active
041143914
ABSTRACT:
A tape laying, trenching apparatus adapted to be drawn behind a vehicle for the purpose of depositing a tape beneath the surface of the earth. The tape is an identification tape and serves as an underground installation identification means. The trenching apparatus includes a wheel-mounted drawbar and a vertically adjustable trenching tool. The trenching tool includes a hollow column and a trenching blade at the foot of the column. A tape dispenser is attached to the upper end of the column and accomodates feeding the tape downwardly through the column to a position behind the trenching blade. The trenching tool is releasably attachable to the drawbar at a plurality of lower, trenching positions and at an upper, traveling position. A strut is interconnectable between the drawbar and the column to support the trenching tool in both the trenching and the traveling positions. The trenching apparatus also includes a tool box mounted on the framework and a drag for backfilling the trench as the tape is being laid.
REFERENCES:
patent: 1490502 (1924-04-01), Barnhart
patent: 2663515 (1953-12-01), Kinsinger
patent: 3559414 (1971-02-01), Pike et al.
patent: 3777500 (1973-12-01), Kelley
Shapiro Jacob
Workman H. Ross
Young J. Winslow
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