US PATENT SUBCLASS 470 / 58
.~ Screw fastener making

Current as of: June, 1999
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470 /   HD   THREADED, HEADED FASTENER, OR WASHER MAKING: PROCESS AND APPARATUS

57  DF  APPARATUS FOR MAKING EXTERNALLY THREADED FASTENER OR ARTICLE, E.G., SCREW, BOLT, ETC. {2}
58.~ Screw fastener making {6}
59  DF  .~.~> Wooden screw
60  DF  .~.~> Having head nicking {3}
64  DF  .~.~> Having head shaving means
65  DF  .~.~> Having pointing means
66  DF  .~.~> Having thread cutting means {8}
84  DF  .~.~> Having thread swaging means {1}

DEFINITION

Classification: 470/58

Screw fastener making:

(under subclass 57) Subject matter for apparatus for manufacturing a securing device, i.e., a fastener, having an

external helical ridge which converges to point on an end of the device.