Cutter bit assemblies for coal ploughs

Details Cutter bit assemblies for coal ploughs Cutter bit assemblies for coal ploughs

1976-08-30

1978-02-28

Purser, Ernest R.

Mining or in situ disintegration of hard material

Miscellaneous

37142R, 299 34, E21C 3518

Patent

active

040763188

ABSTRACT:
A cutter bit assembly is composed of a carrier or holder secured or integral with a coal plough and a cutter part detachably secured to the holder. The holder has a head piece with opposite plane faces extending transversally to the cutting direction. A bore in the head piece opens to these faces and extends parallel to the cutting direction. The cutter part has a plane face engageable on one of the transverse faces of the head piece and a projection and recess on these engageable faces prevents rotation of the cutter part. A threaded member either integral with or separate from the cutter part extends through the bore in the head piece and receives a nut bearing on the other of the transverse faces and used to detachably secure the cutter part to the head piece.

REFERENCES:
patent: 1916354 (1933-07-01), Barber
patent: 1980897 (1934-11-01), Winings
patent: 2612361 (1952-09-01), Hagenbook
patent: 2680597 (1954-06-01), Brown
patent: 2841896 (1958-07-01), Meshorer
patent: 3203488 (1965-08-01), Eastwood

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