GB786982A - Improvements in or relating to mineral mining apparatus - Google Patents

Abstract

786,982. Mineral - mining machines. EICKHOFF MASCHINENFABRIK UND EISENGIESSEREI GES., GEB. July 25, 1955 [July 30, 1954], No. 21428/55. Class 68(1) A mineral-mining machine for working a seam over the entire thickness as it is moved through the seam parallel to the face thereof, has cutting means 12, 14, 16 so disposed at either end of the machine that the leading cutting means can operate ahead of the body 6 of the machine to clear a space for the body to be advanced into and, also, load disintegrated mineral on to the adjacent of a pair of conveyers 2 disposed at right angles to the direction of advance of the machine and between the two cutting means, whilst the trailing cutting means can be moved into a position in which it does not contact the seam. Each cutting means comprises a cutter drum 12, a cutter chain-carrying jib 14 and a cutter drum or drums 16. The drum 12 is rotatably at the end outermost with respect to the seam by an arm portion 10 of the body 6, the arm portion 10 extending between the upper and lower runs of the adjacent conveyer 2. The jib 14 is supported on the other end of the drum 12 so as to be rockable about the axis thereof and the cutter chain 29 of the jib 14 is in geared connection with the drum 12. The gear drive between the cutter drum or drums 16 rotatably supported by the jib and the cutting chain 29 is such that the direction of rotation of the drum or drums 16 is opposite to the direction of rotation of the chain 29 and drum 12. A drive 7 on the body 6 engages a fixed chain 24 to advance the machine.