Percussive slot cutter

Details Percussive slot cutter Percussive slot cutter

1978-11-20

1980-06-10

Pate, III, William F.

Mining or in situ disintegration of hard material

Processes

299 70, E21C 2702

Patent

active

042069475

ABSTRACT:
A machine for cutting a slot in hard rock uses a percussive drill to slot the rock, the drill being so mounted that the tool has an obtuse angle to the base of the slot in the direction of advance, which angle is for optimum effect between 120.degree. and 145.degree. and preferably between 130.degree. and 140.degree.. The drill is oscillated and cuts on the forward stroke and free wheels on the return stroke. The drill may be adjusted to vary the angle and the angle of inclination to the horizontal.

REFERENCES:
patent: 2398311 (1946-04-01), Hulshizer

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