Improvements in cutter picks and means for mounting such picks in mineral-mining machines

855,279. Mineral-mining equipment. UNION CARBIDE CORPORATION. Sept. 12, 1959, No. 31150/59. Class 68(1). In a blind bore 32 in the shank 18 of a pick for a mineral-mining machine is housed a ball 30 that is urged outwards of the bore by a coil spring 36 positioned in the bore. The ball when the shan...

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Bibliographische Detailangaben

1. Verfasser:	BOWEN JOHN THOMAS
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS MINING MINING OR QUARRYING
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