US PATENT SUBCLASS 83 / 246
.~.~.~ By change of effective shape of driving or driven surface of element of work-feed mechanism

Current as of: June, 1999
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83 /   HD   CUTTING

202  DF  TOOL ENGAGES WORK DURING DWELL OF INTERMITTENT WORKFEED {40}
240  DF  .~ Means to change tool position, or length or datum position of work- or tool-feed increment {2}
241  DF  .~.~ With means to vary magnitude of work-feed increment {4}
246.~.~.~ By change of effective shape of driving or driven surface of element of work-feed mechanism

DEFINITION

Classification: 83/246

(under subclass 241) Device wherein the length of work-feed increment may be varied by altering the contour of that portion of a moving member which transmits or receives force to drive the work-feed mechanism.

(1) Note. Typical examples of work-feed adjustments included in this subclass are (a) changing the number of teeth used in a mutilated drive gear, (b) removing part of the tooth of a worm gear, (c) two cam segments in

juxtaposition on a shaft may be made angularly adjustable relative to each other.

(2) Note. The adjustable cam or gear must be in the work-feed drive train itself, not merely in a control linkage, for which see subclass 241, supra.

SEE OR SEARCH THIS CLASS, SUBCLASS:

241+, for changing magnitude of work-feed increment by altering the effective shape of a cam or the like in a timing or control mechanism (not transmitting force to drive the work-feed means), and see (2) Note, above.