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 63.—PRESSING.

(See also [p. 144].)

[2387]. Lever press for hay, straw, &c., with rack and pawl at each side operated by two hand levers.

[2388]. Continuous press for coal dust, &c. The ram has a reciprocating motion, and the material is forced into a tapered chamber, the resulting friction in which gives sufficient resistance to press the material to the density required.

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