E - Fixed Constructions – 21 – C
Patent
E - Fixed Constructions
21
C
262/81
E21C 35/08 (2006.01) E21C 31/08 (2006.01) E21C 31/10 (2006.01)
Patent
CA 1061813
ABSTRACT OF THE DISCLOSURE A mining machine having a mineral winning head mount including a plurality of links pivotted successively one to another and powered means for pivotting the successive links about their pivot axes and where on said links and powered means allow the mineral winning head to be retracted at least partially into an angled configuration of the links.
279755
Eckersley John
Hamilton Terence
Phillips Reginald A.
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