US PATENT SUBCLASS 470 / 73
.~.~.~ Having collapsible die

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  DF  .~ Screw fastener making {6}
66  DF  .~.~ Having thread cutting means {8}
73.~.~.~ Having collapsible die {4}
74  DF  .~.~.~.~> And bevel operator
75  DF  .~.~.~.~> And cam operator {1}
77  DF  .~.~.~.~> And lever closer {1}
79  DF  .~.~.~.~> And pivotable chaser carrier

DEFINITION

Classification: 470/73

Having collapsible die:

(under subclass 66) Subject matter wherein the apparatus is further provided with a mechanism provided with two elements structured to cooperate to cut, shape, or stamp a portion of the fastener and further wherein the elements are capable of opening or closing with each other such that work material being used to form the fastener can be separated from the

mechanism without having to unscrew the material from the mechanism.

(1) Note. The elements or dies used to form the threads on the fastener are know in this art as "chasers".