US PATENT SUBCLASS 72 / 157
.~.~ Including interchangeable or adjustable wiper or form

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}
149  DF  .~ By use of work-contacting wiper and moving, work-holding form {9}
157.~.~ Including interchangeable or adjustable wiper or form {1}
158  DF  .~.~.~> Comprising adjustable wiper

DEFINITION

Classification: 72/157

Including interchangeable or adjustable wiper or form:

(under subclass 149) Subject matter including means permitting either: (a) by substitution of another wiper or another form, or a portion of either member, or (b) by variation in the position of the wiper relative to the form of the work.