Self-advancing mine roof supports
AssigneeDobson Park Industries Limited
InventorsJames Seddon, Frank Jones
Life of this patent
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Abstract
A self-advancing mine-roof-support for use in or aligned with a main roadway or gate has a floor-engaging part and a roof engaging part spaced apart by extensible load-bearing prop or jack means, and engagement means for a face-conveyor and a transversely acting transfer conveyor whereby their relative positions are constrained to facilitate discharge of mineral from one conveyor to the other. The engagement means for the face conveyor comprises sliding anchor beams that assure maintenance of the relative attitudes of the support and the face conveyor and the transfer conveyor is held fore and aft of the support.
Claims20
A self-advancing mine-roof-support for use aligned with a main roadway or gate, said support having a floor-engaging part and a roof-engaging part spaced apart by extensible load-bearing prop means, and conveyor location means for constraining the relative positions of two transversely acting conveyors to facilitate discharge of mineral from one of the conveyors to the other, the roof-engaging part extending from the prop means laterally of the direction of the roadway or gate, which direction corresponds to the direction of action of means for advancing the support.
A self-advancing mine-roof-support for use in or aligned with a main roadway or gate, said support having a floor-engaging part and a roof-engaging part spaced apart by extensible load-bearing prop or jack means, and engagement means for both of transversely acting conveyors, whereby their relative positions are constrained to facilitate discharge of mineral from one of the conveyors to the other, wherein the roof-engaging part is generally crescent shaped and extends to a substantial extent downwards at the transfer conveyor side of the support.
A self-advancing mine-roof-support for use in or aligned with a main roadway or gate, said support having a floor-engaging part and a roof-engaging part spaced apart by extensible load-bearing prop or jack means, and engagement means for both of transverseley acting conveyors, whereby their relative positions are constrained to facilitate discharge of mineral from one of the conveyors to the other, wherein the roof-engaging part is generally crescent shaped and is hinged to a head or crown part each part being supported by one or more further prop means.
Dependencies are inferred from the claim text.