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

[267]. Cradle and roller mill.

[268]. Cone disc mill; the cones being inclined axially to one another, the material is crushed at the lower side of the cones.

[269]. Another form of stone breaker with toggle motion.

[270]. Horizontal cone plate mill.

[271]. Revolving stamp and pan mill for ores.

[272]. Vertical cone mill.

[273]. Revolving pan and ball mill.

[274]. Planishing discs for accurately rounding iron bars. See the patent rolled shafting in use, manufactured by the Kirkstall Forge Co. and others.

[275]. Vertical cone grinding and crushing mill. The vertical shaft has an eccentric motion at the footstep, giving a swaying rotatory motion to the grinding cone.

[276]. Crushing rollers with spring bearing.