Earth working – With drive means for tool or cleaner – Vibrating tool
Patent
1974-06-27
1976-04-27
Burr, Edgar S.
Earth working
With drive means for tool or cleaner
Vibrating tool
371425, 37193, 61 726, 172400, 172413, 172537, 280 4323, 404124, 404128, F16L 102, E02F 518
Patent
active
039528103
ABSTRACT:
A slit trenching and cable laying device includes: a frame held above the ground by a support, preferably adjustable to various levels above the ground, a plow for digging a slit trench and laying a cable or line therein, the plow being mounted so as to be relatively movable with respect to the frame, a mechanism for imparting a digging motion to the plow, preferably, adjustable to impart a variable motion and being adapted to be driven by a vehicle towing the device, and another mechanism for imparting a motion to the plow for reducing surface contact and resultant drag between the plow and the sides of the trench, preferably adjustable for varying the magnitude of the motion as conditions warrant.
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patent: 3782480 (1974-01-01), Schmahl
Burr Edgar S.
Ulrich Foundation, Inc.
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