Milling machine for digging trenches in the earth

Details Milling machine for digging trenches in the earth Milling machine for digging trenches in the earth

1988-07-15

1989-07-04

Massie, IV, Jerome W.

Boring or penetrating the earth

Boring means including a continuously rotating bit...

37 94, 175 96, E02F 508

Patent

active

048445495

ABSTRACT:
A milling machine for digging trenches in the earth, of the type comprising at least one substantially vertical support plate on both sides of which two milling drums are mounted for rotation about an axis substantially perpendicular to the plate, each of the drums carrying, on the one of its edges which is adjacent to the support plate, at least one tool which projects laterally with respect to this edge, and the support plate including opposite the trajectory of said tools, circular channels coaxial with the drums, through which the ends of these tools pass when the drums turn. The projecting tools of one of the drums redisposed at a distance from the axis which is different from the distance to the axis from the projecting tools of the other drum, the channels having, correspondingly, different radii.

REFERENCES:
patent: 3894587 (1975-07-01), Sourice
patent: 4391472 (1983-07-01), Krekler
patent: 4800967 (1989-01-01), Chagnot et al.

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