US PATENT SUBCLASS 83 / 273
.~ Intermittent drive type of gearing for work-feed means

Current as of: June, 1999
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83 /   HD   CUTTING

202  DF  TOOL ENGAGES WORK DURING DWELL OF INTERMITTENT WORKFEED {40}
273.~ Intermittent drive type of gearing for work-feed means {2}
274  DF  .~.~> Gearing modified to lock the work-feed means
275  DF  .~.~> Mutilated gear in mesh with gear driving work-feed means

DEFINITION

Classification: 83/273

(under subclass 202) Device wherein step-by-step work-feed motion is obtained by means of modified rotary gearing which periodically interrupts the flow of power to the feed means during continued rotation of a portion of the gearing.

(1) Note. This subclass includes only those devices wherein a rotary gear or element rigid therewith drives the work-feed means intermittently.

SEE OR SEARCH THIS CLASS, SUBCLASS:

241+, for disclosures of work-feed adjustment by altering an

effective number of teeth in intermittent gearing which controls, but does not drive, a work-feed device.

246, for an interrupted gear drive wherein the effective number of driving gear teeth is adjustable to vary the work-feed increment.