(under subclass 105) Pushing and pulling implement of the step-by-step traveling bar type in which the relative travel of the bar is produced by one or more reciprocating clutches.
(1) Note. The term "clutch" is here used to designate a bar-engaging device, generally annular, which engages opposite sides of a bar with a canting, clamping, or gripping action. The bar may be smooth or notched.
SEE OR SEARCH THIS CLASS, SUBCLASS:
31, for a pipe or rod lifter having a clutch means for engaging and shifting the pipe or rod.
210, and 245, for implements or apparatus having a lever and gripping means attached thereto for shifting a bar component.
SEE OR SEARCH CLASS
40, Card, Picture, or Sign Exhibiting,
350, for a copyholder including one or more clutches to move a step-by-step traveling bar attached to, and in turn moving a platen to which copy is secured.
