The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose

by Thomas Walter Barber

Section 13.—CRUSHING, GRINDING, AND DISINTEGRATING.

[250]. Stamp mill, generally arranged in a battery of 4 or 6, for gold and other ores.

[251]. Stone-breaker, with chilled iron jaw faces and toggle or knapping motion. See Blake’s, H. R. Marsden’s, and other modifications in common use.

[252]. Double edge-runners. Sometimes driven below. In some designs the rollers revolve, and in others the pan revolves and the roller shaft is stationary.

[253]. Lucop’s patent centrifugal pulveriser.

[254]. Carr’s patent disintegrator. In this machine, each ring of bars is driven at a high speed in opposite directions inside a casing, the material being broken by the rapidity and intensity of the blows it receives.

[255]. Horizontal centrifugal roller mill. The material is crushed between the rollers and the shrouding of the pan by the centrifugal force of the rollers, which are suspended from a crosshead.

[256]. Cone roller mill, with vertical spindle.

[257]. Cone roller mill, with horizontal spindle and conical pan.