Method and apparatus for making wire nails having radially offse

Details Method and apparatus for making wire nails having radially offse Method and apparatus for making wire nails having radially offse

1992-02-07

1993-03-23

Larson, Lowell A.

Threaded, headed fastener, or washer making: process and apparat

Process

Making headed fastener, e.g., rivet or nail, etc.

470125, 470121, B21G 300

Patent

active

051959313

ABSTRACT:
Nails having radially offset, circular heads are manufactured from a malleable wire. The wire is clamped so that a leading portion extends axially from a clamping mechanism. The extending portion is bent at an acute angle relative to a clamping axis. The extending portion is cut so as to form a pointed end thereon and so as to leave a bent stub extending at such an angle. Such a nail head is formed from the stub, which is pressed by a punch into a cavity defined by the clamping mechanism, and which is deformed when pressed thereinto. The cavity has a fully circular, offset margin. The punch has a face covering the cavity. Once released, the wire is fed axially until a leading portion extends as before. These operations are repeated to form a similar nail in each repetition. A novel apparatus for carrying out these operations is disclosed.

REFERENCES:
patent: 248640 (1881-10-01), Dean
patent: 343839 (1886-06-01), North
patent: 521571 (1894-06-01), O'Neill
patent: 1078147 (1913-11-01), Johnson
patent: 1103659 (1914-07-01), Champion
patent: 1187472 (1916-06-01), Sisson
patent: 2903720 (1959-09-01), James
patent: 4342127 (1982-08-01), Weaver

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