Cutter picks

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1980-01-03

1981-04-14

Purser, Ernest R.

Mining or in situ disintegration of hard material

Miscellaneous

37142A, E21C 2546

Patent

active

042616190

ABSTRACT:
A mineral cutting tool comprises a head and a shank extending therefrom for fitting into a socket of a box, the shank having a laterally extending, two-part aperture, the parts thereof communicating with one another, with the first aperture part housing a first portion of a resiient retaining member whereby the latter is secured to the shank, the second aperture part housing, with clearance, a second portion of the resilient retaining member, which second portion is flexibly connected to the first portion, the second portion projecting at least from one end of the second aperture part for abutting engagement, in use, with the socket of the box.

REFERENCES:
patent: 4154483 (1979-05-01), Hollingworth

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