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

[1179]. Gripping pawls and ring for silent feed motion.

Snail ratchet, [No. 725].

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Section 63.—PRESSING.

The ordinary Screw press and Hydraulic press are well-known machines.

[1180]. Rack and screw press.

[1181]. Power press or stamp, with double crank movement worked from below.

[1182]. Dick’s anti-friction press, with rolling contacts throughout.

[1183]. Hydraulic press, with dies for lead pipe making; a similar press is used for making earthenware drain and flue pipes, the material being forced out of an annular orifice.

[1184]. Wedge press.