Patent ID: 6536847
Filing Date: 2003-03-25
Classification: E21C,Y10T

Abstract:
A â€œwetâ€  pick box for releasably housing a shank of a mineral cutter pick, the box comprising:(i) a body member, adapted in use to be secured to a rotary member, and having a front end and a rear end; (ii) a first aperture provided in said body member and corresponding in cross-section to that of a sleeve or of a shank of a cutter pick intended, in use, to be inserted into said aperture; (iii) an internal water course provided in said body member and defined by at least one bore, said water course being connectable, at an inlet end thereof, to a source of pressurised water; (iv) a second aperture provided in said body member and adapted to house a water spray nozzle with said second aperture connected to an outlet end of said water course; (v) a hole intersecting said bore towards said rear end of said body member, and (vi) said hole accommodating optionally either a first member capable of permitting water flow to said spray nozzle for normal operation, or, in circumstances of a box becoming broken in use, a second member capable of blanking-off the bore and preventing water flow.