.~ With means to control magnitude of work-feed increment or work acceleration {2}
264
.~.~ Means to prevent random or excessive work feeds
DEFINITION
Classification: 83/264
(under subclass 263) Device wherein means is provided to prevent the overrunning of a work-feed means or its motion during any part of the cycle other than while it is being driven.
(1) Note. These devices may be utilized to prevent advance of work by tampering or unauthorized use, as in ticket-issuing machines, or may be used to handle certain kinds of workpieces with greater precision, reduce wastage, etc.
(2) Note. If overrunning is prevented by positive drive trains (double-acting cams, etc.), search the pertinent types of work-feeds.
SEE OR SEARCH THIS CLASS, SUBCLASS:
221, 399+, for an interlock including control of work-feed means.
242+, for a machine characterized by multiple-unit work-feed increments, which usually include means to prevent overrun or unauthorized work-feed operation. 274, for positive stop during dwell.
