Cutting tool assembly

Details Cutting tool assembly Cutting tool assembly

1979-12-03

1981-11-10

Pate, III, William F.

Mining or in situ disintegration of hard material

Miscellaneous

E21C 2512

Patent

active

042994241

ABSTRACT:
A cutting tool assembly adapted for mounting on a driving mechanism of a mining machine to dislodge solid material in mining operations includes a base member rigidly secured as by welding to the driving mechanism. A cutter member having an elongated shank and a conical head is releasably positioned in a bore through the base member. The conical head extends from the upper end of the shank and supports a hard cutting tip that is operable to dislodge solid material from a mine face upon rotation of the driving mechanism. The shank has a tapered body positioned in a tapered portion of the base member bore. The surface of the tapered body cooperates with the bore tapered portion to form a locking fit of the shank in the base member substantially free of relative movement between the shank and the base member to prevent wear of the base member bore. A securing device engages the lower end of the shank to exert a downward force on the shank and urge the complementary surfaces of the shank and the base member into wedging engagement within the bore. Wear of the base member bore is thus substantially prevented resulting in an extended operating life of the base member and reduced downtime for replacing a worn base member.

REFERENCES:
patent: 3268260 (1966-08-01), Snipe
patent: 3342531 (1967-09-01), Krekeler
patent: 3342532 (1967-09-01), Krekeler
patent: 3397012 (1968-08-01), Krekeler
patent: 3690728 (1972-09-01), Krekeler
patent: 3841708 (1974-10-01), Kniff
patent: 3992061 (1976-11-01), Rollins

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