Mining or in situ disintegration of hard material – Miscellaneous
Patent
1990-09-20
1991-07-09
Bagnell, David J.
Mining or in situ disintegration of hard material
Miscellaneous
299 92, E21C 2512, E21C 3518
Patent
active
050299441
ABSTRACT:
A tool holding device for use in mining machines has a base with a plane surface which abuts a plane surface of a detachable tool holder. The latter has a through hole for a protuberance of the base and two projections which are remote from the through hole and extend into complementary recesses in the surface of the base. The protuberance of the base has a transverse aperture which is outwardly adjacent an exposed surface of the tool holder opposite the abutting surfaces and serves to receive the deformable prongs of a slidable coupling member having a head adjacent the free end of the protuberance. The shank of the material removing tool is receivable in aligned sockets of the tool holder and base in such a way that the working end of the properly inserted tool is adjacent the head of the coupling member and the bolt cannot be extracted or expelled from the aperture prior to removal of the tool shank from the sockets. This ensures that the tool holder cannot become accidentally separated from the base when the tool holding device is in actual use. When the tool holder is properly interfitted with the base, it protects the base from damage.
REFERENCES:
patent: 3865437 (1975-02-01), Crosby
patent: 4744605 (1988-05-01), Komotzki
Bagnell David J.
Kontler Peter K.
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