Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – By means advancing along terrain and guiding pipe or cable...
Patent
1977-08-02
1979-07-03
Stein, Mervin
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
By means advancing along terrain and guiding pipe or cable...
F16L 102
Patent
active
041596307
ABSTRACT:
An assembly such as for a tile chute tool for laying tile, plastic pipe or the like or for a crumbing tool either of which tools is adapted to be connected to the digging boom and mobile chassis of a ditching or trenching machine by a four-bar linkage. The linkage is connected to the boom by extensible arm means which can be fixed at one length to maintain the boom and tile chute tool in operable relation to each other for digging and tile laying or other tool function, or released to be telescopically extendible for the digging boom to proceed with digging with the tile chute tool remaining at ground level. A control member tiltable relative to the pivot axis of the digging boom connects to the linkage to alter the position of the tile chute tool bottom.
REFERENCES:
patent: 3286476 (1966-11-01), Maclay
patent: 3292379 (1966-12-01), McElvany
patent: 3605419 (1971-09-01), Wells
patent: 4043135 (1977-08-01), Hoes et al.
Corbin David H.
Stein Mervin
The Charles Machine Works, Inc.
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