US PATENT SUBCLASS 72 / 148
.~.~ With core inside coil

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}
146  DF  .~ To form spiral coil {2}
148.~.~ With core inside coil

DEFINITION

Classification: 72/148

With core inside coil:

(under subclass 146) Subject matter wherein the work is deflected onto an arbor to form the convolutions of the coil.

(1) Note. The Figures below illustrate two exemplary forms of "blocker and core" used to start the winding of a strip around a core or arbor. In one form a belt (backed by rollers) surrounds the core; in the other, rollers (without the belt) urge the first convolutions of a strip around the core. [figure] [caption]Belt Blocker and Core [figure] [caption]Roller Blocker and Core