Adjustable blade holder

Excavating – Ditcher – Wheel excavator

Patent

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Details

37193, 405181, 172744, A01B 364, E02F 502

Patent

active

050901419

ABSTRACT:
The invention provides automated adjustment of the height of a trenching blade. There is a blade holder having a generally vertical channel defined therein, and support means for carrying the blade holder behind a vehicle at a height above the ground. A trenching blade for dragging through the ground behind the vehicle has a shank portion extending upwardly therefrom into the channel and slidably engaging in the channel for vertical movement therewithin, whereby the depth of the blade may be varied. At least one hydraulic cylinder is connected between the blade holder and the blade shank for varying the position of the blade shank within the blade holder and thereby varying the depth of the blade. In the preferred embodiment, the support means is at the end of a boom which is pivotally connected to the vehicle for pivotal movement about a generally vertical axis, and the blade holder is pivotally mounted to the support means, for pivotal movement about a generally vertical axis. There is additionally at least one hydraulic cylinder connected between the blade holder and the support means for varying the angle in the horizontal plane between the blade holder and the support means, whereby the angle of the trenching blade may be varied to steer the movement of the blade through the ground.

REFERENCES:
patent: 304776 (1884-09-01), Barnes
patent: 3041751 (1962-07-01), Chattin
patent: 3611596 (1971-10-01), Bright et al.
patent: 3777500 (1973-12-01), Kelly
patent: 4219947 (1980-09-01), Paladino

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