John X Binder

US Patent:

51959313, Mar 23, 1993

Filed:

Feb 7, 1992

Appl. No.:

7/832802

Inventors:

Robert W. Wright - Buffalo Grove IL
John Binder - Morton Grove IL
William L. Gabriel - Barrington IL

Assignee:

Illinois Tool Works Inc. - Glenview IL

International Classification:

B21G 300

US Classification:

470 40

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.