. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. 857. 859, 2 ^. 860, underneath the frame, the machine can be taken through narrow roads without the cutting wheelbeing removed ; the space required for the machine to pass being not more than 4 ft., the diameterof the cutting wheel, with the cutters attached, being 3 ft. 8 in. Another important advantage inthis machine is, that the power to drive the cutting wheel is applied direct on ofthe wheel; which mode of gearing also allows the small pieces of coal or slack to fall through to thebo
. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. 857. 859, 2 ^. 860, underneath the frame, the machine can be taken through narrow roads without the cutting wheelbeing removed ; the space required for the machine to pass being not more than 4 ft., the diameterof the cutting wheel, with the cutters attached, being 3 ft. 8 in. Another important advantage inthis machine is, that the power to drive the cutting wheel is applied direct on ofthe wheel; which mode of gearing also allows the small pieces of coal or slack to fall through to thebottom, so as not to block or clog up the teeth of the machine. A disadvantage possessed by this 390 COAL MINING. machine, in common with many others, consists in its being able to cut on only one side of thecarriage; so that when it is necessary to cut on both sides of a drift or heading, the machine reqiuresto be turned round bodily, by means of a turntable or some similar contrivance. In 1872 this machine had been employed for nearly two years at the Piatt Lane Colliery, Wigau,in a seam of coal kn
Size: 1430px × 1746px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectenginee, bookyear1879
