Cutter bit assemblies

Details Cutter bit assemblies Cutter bit assemblies

1977-06-29

1979-04-17

Purser, Ernest R.

Mining or in situ disintegration of hard material

Miscellaneous

299 86, E21C 2510

Patent

active

041497538

ABSTRACT:
A cutter bit for use with a cutting or winning machine has a generally cylindrical shank and a generally conical cutting head. The shank is rotatably received, in use, within a matched bore in a bit holder. The shank is formed with a reduced-diameter portion on which is rotatably mounted a bearing ring. A compressible locking ring surrounds and grips the bearing ring so that, in use, the locking ring frictionally engages the bore in the bit holder so as to restrain relative axial movement between the cutter bit and the holder.

REFERENCES:
patent: 3132557 (1964-05-01), Bauer
patent: 3498677 (1970-03-01), Morrow
patent: 3512838 (1970-05-01), Kniff
patent: 3618683 (1971-11-01), Hughes
patent: 3820848 (1974-06-01), Kniff
patent: 3986565 (1976-10-01), Atkinson

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