Socketed boss having means for retaining a tool shank

Details Socketed boss having means for retaining a tool shank Socketed boss having means for retaining a tool shank

1979-07-11

1981-06-23

Pate, III, William F.

Mining or in situ disintegration of hard material

Miscellaneous

37142A, E21C 3518

Patent

active

042746787

ABSTRACT:
A mineral mining pick boss having a socket therein for the reception of a shank of a mineral mining pick and a locking arrangement for retaining the shank, the locking arrangement comprising a plug received in a bore extending through the boss transversely of the socket the arrangement being such that the bore intersects the socket, the plug comprising a body of a resilient material (e.g. neoprene) having bonded into the periphery thereof at spaced locations a plurality of metallic members one of which protrudes from the bore into the socket for frictional engagement with the shank of the tool so as to retain the tool in position, the other(s) of the metallic members being disposed within the bore, and the arrangement of the metallic members being such that the plug may be removed from the bore, rotated and re-inserted to change the metallic member which protrudes into the socket.

REFERENCES:
patent: 2987332 (1961-06-01), Bonmartini
patent: 3277592 (1966-10-01), Launder
patent: 3773114 (1973-11-01), Griffin
patent: 3796464 (1974-03-01), Hansen et al.
patent: 4087928 (1978-05-01), Mickus

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