Tool and nozzle supporting device for use in mining machines

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Cleansing fluid passage

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Details

175424, 299 92, E21C 3522

Patent

active

050711954

ABSTRACT:
A tool supporting device for use in mining machines has a base abutting a tool holder which is biased against the base by a wedge-like resilient coupling member. The abutting surfaces of the base and tool holder have aligned holes including a blind hole in the base and a stepped through hole in the holder. The bottom surface in the blind hole serves as an abutment for an annular elastic sealing element which is deformed by the rear portion of a nozzle having an orifice in the through hole and an external shoulder which abuts an internal shoulder between the larger-diameter and smaller-diameter sections of the through hole. When the two shoulders abut each other and the tool holder is coupled to the base, the rear portion of the nozzle deforms the sealing element to prevent leakage of coolant, such as water, from a liquid-supplying channel which is provided in the base and has a discharge end in the bottom surface in register with the inlet of the nozzle. The tool holder has a socket which is adjacent the through hole and serves to receive the shank of a material removing tool, such as a bit.

REFERENCES:
patent: 3865437 (1975-02-01), Crosby
patent: 4070064 (1978-01-01), Cobb et al.
patent: 4280735 (1981-07-01), Lobbe
patent: 4978173 (1990-12-01), Rothkegel
"Kurznachrichten aus Bergtechnik und Kohlenveredelung", p. 3, Aug. 1985 (No. 117).

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