Threaded – headed fastener – or washer making: process and apparat – Apparatus for making externally threaded fastener or... – Screw fastener making
Patent
1993-01-15
1994-03-29
Larson, Lowell A.
Threaded, headed fastener, or washer making: process and apparat
Apparatus for making externally threaded fastener or...
Screw fastener making
470185, 470 66, B23G 500
Patent
active
052979970
ABSTRACT:
A hand-held tool is provided for applying threads to an earring post, to enable the earring post to thereafter receive a clutch member in a non-slip relationship. This novel tool comprises an elongate member of generally cylindrical configuration, around one end of which a cap member may be removably secured, such as by the use of interfitting threads. The one end of the elongate member defines a flat recess of circular configuration designed to receive therein, a flat circular die equipped with centrally disposed female threads. The recess is slightly shallower than the thickness of the die, and the die is preferably held in a non-rotative position in the recess by the internally threaded cap being tightened into firm contact with the threaded end of the elongate member. The cap member has a centrally disposed hole therein, into which an earring post may be inserted, and thus be brought into contact with the female threads of the die. As a result of this construction, upon rotation of the elongate member relative to the post, threads will be formed on the post. A die may be operatively mounted on both ends of the elongate member, so that a pair of different size dies may be mounted in a ready-to-use condition.
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Larson Lowell A.
McKeon Michael J.
Renfro Julian C.
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