Spiral vane shearer drum

Details Spiral vane shearer drum Spiral vane shearer drum

E - Fixed Constructions

21

C

262/54

E21C 25/06 (2006.01) E21C 25/10 (2006.01) E21C 35/18 (2006.01) E21C 35/22 (2006.01)

Patent

CA 1169103

-10- ABSTRACT SPIRAL VANE SHEAR DRUM A spiral vane shearer drum 1 comprises a rotatable outer barrel 2, a plurality of helical vanes 7 welded around the external periphery 6 Or the outer barrel 2 and extending generally radially with respect to the axis of rotation 3 of the outer barrel 2, and a plurality of elongate pick supports 11 welded at spaced apart locations along outer edges 10 of the vanes remote from the outer barrel 2, each pick support providing a male projection 13 adapted, in use, to retain releasably a female apertured pick 16.

391697

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