US PATENT SUBCLASS 72 / 160
.~ By use of deflected arranged to provide longitudinally undulating path for work (e.g., "leveling")

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

127  DF  BY DEFLECTING SUCCESSIVELY-PRESENTED PORTIONS OF WORK DURING BODILY MOVEMENT THEREOF (E.G., FOR COILING, LEVELLING, CURVING OR TROUGHING MATERIAL IN MOVEMENT) {11}
160.~ By use of deflected arranged to provide longitudinally undulating path for work (e.g., "leveling") {4}
161  DF  .~.~> With deforming of work or product (other than levelling)
162  DF  .~.~> Including relatively-inclined successive rollers
163  DF  .~.~> And back-up means for roller-deflector
164  DF  .~.~> And adjustable carrier for deflector {1}

DEFINITION

Classification: 72/160

By use of deflected arranged to provide longitudinally undulating path for work (e.g., "levelling"):

(under subclass 127) Subject matter wherein the instrumentality includes a plurality of deflectors* positioned along the path of moving work in offset relationship, each of which deflectors forces each successively presented portion of work from one direction into another direction in an arc extending partially around an axis-of-bend* that is disposed transversely of the path of work movement.

(1) Note. Included in this and indented subclasses are patents disclosing operations known in the art as "straightening" and "levelling". These patents have a plurality of deflectors located adjacent a course of work movement along a straight line from entrance end to exit end of the instrumentality. At least one of the deflectors is intruded into the line from one side and another deflector is adjacent to, or intruded into, the line from another side.

As the work passes along the successive deflectors, any specific work portion will move along the course, be deflected in one direction by a first deflector, and that specific portion will be deflected in another direction by another deflector. The work within the instrumentality is engaged by a plurality of deflectors simultaneously, so that at any instant of time the work has formed therein a plurality of deflected portions similar in shape to a "roller coaster" track extended into a single compass direction. However, each specific portion passes through a sinuous path. In many disclosures it is clear that the amplitude of the deflections is greatest at the entrance end of the device and least (or zero) at the exit end thereof, so that at the exit end the product is straight or planiform. An illustration of a typical "leveller" appears in Figure III-4 under the definition of axis-of-bend* in the Glossary of this class.

(2) Note. Patents placed originally in this and indented subclasses disclose an operation wherein a stress is applied to work because of, and during, its passage through an undulant path. See the disclosures of subclass 205 for an undulant path "tension bridle" as a retarding means in a roller couple system.

SEE OR SEARCH THIS CLASS, SUBCLASS:

205+, and see (2) Note above.