Device for affixing cutter drums to an apparatus intended for cu

Details Device for affixing cutter drums to an apparatus intended for cu Device for affixing cutter drums to an apparatus intended for cu

1990-01-12

1991-02-12

Reese, Randolph A.

Excavating

Rotary digger

37 91, 403370, 403383, E02F 324

Patent

active

049913220

ABSTRACT:
The invention relates to a device for affixing cutter drums on an apparatus designed to cut trenches in the ground.
The driver includes a revolving plate 4 disposed perpendicular to its axis and to the end of the latter, the plate having on its periphery a convex polygonal shape 9. A cutter drum 8 is provided with a portion 8a including a central hollow of concave polygonal shape 10 corresponding to the convex polygonal shape 9 of the plate 4 and of slightly greater dimensions. Bolts 11 unite the cutter drum 8 to the said plate 4 such that the rotational driving of the cutter drum 8 by the plate is performed through the medium of the aforesaid polygonal surfaces 9, 10 which come into engagement with one another.

REFERENCES:
patent: 2732641 (1956-01-01), Jespersen
patent: 3390473 (1968-07-01), Williams

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