Method of forming a head on a fastener

Details Method of forming a head on a fastener Method of forming a head on a fastener

1995-06-07

1996-07-09

Crane, Daniel C.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

Clamp structure constitutes sole initial metal-deforming...

470 27, 470137, 72377, B21G 312

Patent

active

055333796

ABSTRACT:
A method and apparatus for forming a head, having a controlled predetermined shape on an end of an elongate member, such as a wire, which is formed into a fastener, where an end portion of the wire is secured in a predetermined position and axially compressed so as to expand a predetermined amount of wire material radially outwardly and thereby form the head on the wire, and where material flow is directed during axial compression so as to provide the controlled predetermined shape of the head.

REFERENCES:
patent: 1207948 (1916-12-01), Long
patent: 1619944 (1927-03-01), Leonard
patent: 1699421 (1929-01-01), Bean
patent: 1944150 (1934-01-01), Brugge
patent: 1955924 (1934-04-01), MacLean
patent: 1968516 (1934-07-01), Dieter
patent: 2049259 (1936-07-01), Greenwell
patent: 2074773 (1937-03-01), Camp
patent: 2718647 (1955-09-01), Raible
patent: 2982166 (1961-05-01), Hobbs
patent: 3089159 (1963-05-01), Carlson

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