E - Fixed Constructions – 21 – C
Patent
E - Fixed Constructions
21
C
262/81
E21C 29/02 (2006.01) B61B 13/12 (2006.01) B61J 3/04 (2006.01) E21C 35/08 (2006.01)
Patent
CA 1148179
Abstract of the Disclosure A rack for mounting on a segmented mine wall face conveyor and for assisting the movement of a drum mining machine along the conveyor, the rack comprising a series of rack segments aligned substantially in an end-to-end relationship, each rack segment provided with a plurality of equidistantly spaced pins adapted for driving engagement with a pinion of the drum mining machine, each segment rotatably mounted on the conveyor, and adjacent rack segments rotatably joined together by a connection link. Means are disclosed for extending and contracting the connection link relative to each adjacent rack segment, and means are disclosed for maintaining the rack at a relatively constant position relative to the pinion in the region of engagement with the pinion.
353826
Politechnika Slaska Im Wincentego Pstrowskiego
Swabey Ogilvy Renault
LandOfFree
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