Multiple tip cutting bit for rotary drum-type cutter

Details Multiple tip cutting bit for rotary drum-type cutter Multiple tip cutting bit for rotary drum-type cutter

1978-05-12

1980-03-18

Purser, Ernest R.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Tooth mounted on helical head portion or head with helical...

299 91, 175383, 407 99, 407113, E21C 3518

Patent

active

041936388

ABSTRACT:
A particularly better rotary cutter for a road planing machine and the like has special holders provided with multi-sided tapered sockets extending generally tangential to the drum surface. A multiple tip cutting bit suitable for use with the aforementioned cutter has two or more tips symmetrically and equidistantly spaced about the projected centerline of an integral tapered shank. The shank has a multi-sided cross-sectional shape corresponding in arrangement to the pattern of the cutting tips, such that the bit can be indexed in its holder to place any selected one of the cutting tips in the operative position.

REFERENCES:
patent: 2150189 (1939-03-01), Ronneberg
patent: 3117386 (1964-01-01), Ferwerda
patent: 3277973 (1966-10-01), Eberman
patent: 3485533 (1969-12-01), Proctor
patent: 3544166 (1970-12-01), Proctor
patent: 4006936 (1977-02-01), Crabiel

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