US PATENT SUBCLASS 72 / 279
.~.~ Varying speed of continuous workpiece through successive tool stations

Current as of: June, 1999
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72 /   HD   METAL DEFORMING

274  DF  BY PULLING WORKPIECE THROUGH CLOSED PERIPHERY DIE (E.G., ROD-, TUBE-, OR WIRE-DRAWING) {8}
278  DF  .~ Utilizing plural metal-deforming tools {5}
279.~.~ Varying speed of continuous workpiece through successive tool stations

DEFINITION

Classification: 72/279

Varying speed or continuous workpiece through successive tool stations:

(under subclass 278) Subject matter which functions to move one portion of a workpiece through one of the instrumentalities at a speed which is different from that at which another portion is moved through another of the instrumentalities.

(1) Note. Typical patents in this subclass include wire-drawing disclosures which provide for successively smaller closed dies, with rotating drums therebetween, and drive means to pull the wire (by rotating the successive drums) at increasing speeds as the wire is reduced and elongated at each smaller closed die.

SEE OR SEARCH THIS CLASS, SUBCLASS:

288, and 289, for a metal-deforming device having a single drum driven at a varying or uniform speed, respectively.