(under subclass 280) Apparatus in which the mechanical device includes an internally screw threaded member and an externally screw threaded shaft with the member extending around the shaft and the screw threads of the shaft and member interengaging, the pressure surface being made to move relative to the fixed abutment by the relative rotation of the shaft and member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
230, for reciprocating platen presses having a central strain rod carrying the reaction to the compacting force, the rod usually being in the form of a screw threaded actuator.
SEE OR SEARCH CLASS
83, Cutting,
463, for cutting apparatus including a work clamp jaw actuated by self-locking drive means (e.g., screw), and, subclass 631, for a screw-actuated reciprocating tool. 147, Coopering,
11, for machines which force hoops upon barrels by means of screw operated pressing or driving means.
269, Work Holders,
240+, for patents to a device with relatively movable jaws, actuated by screw-nut means, to grip work while being treated. See the class definition of Class 269, Lines With Other Classes, Relationship to Press Means, for the line with Class 100.
408, Cutting by Use of Rotating Axially Moving Tool,
64, 100+ and 129+, for drill presses having screw and nut feeding mechanism.
