Chapter LVII: 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.=

=1185. Ster-hydraulic press;= a strand or rope is wound upon a barrel inside the cylinder, thus displacing the water and raising the ram.

=1186. Screw fly press.=

=1187. Combined screw and hydraulic press.= The screw is worked down by hand until the pressure becomes too great for hand power, when the pressing is finished by the hydraulic ram.

=1188. Revolving dies.=

=1189. The “Boomer” double-screw toggle press,= with increasing pressure as the press follower descends.

=1190. Revolving toggle press,= with similar capabilities but more restricted movement.

=1191. Sector and link press= for increasing pressure.

=1192. Press dies,= with sliding plate for discharging.

=1193. Screw and toggle press;= a modification of No. 1189.

=1194. Double ram hydraulic press= for two pressures; the small ram is employed to give the first pressure, the large ram then finishes the pressing.

See also Section 13.