B - Operations – Transporting – 21 – G
Patent
B - Operations, Transporting
21
G
B21G 3/12 (2006.01) B21G 3/00 (2006.01) B21G 3/16 (2006.01)
Patent
CA 2086214
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.
Clous à tête circulaire excentrée fabriqués à partir d'un fil malléable. Le fil est pincé de manière qu'un bout ressorte axialement du mécanisme de serrage. Ce bout de fil allongé est courbé à un angle aigu par rapport à l'axe de serrage. Il est ensuite coupé de manière à former une extrémité pointue courbée selon le même angle. Ce type de tête de clou est formé de ce bout de fil inséré par pression dans une cavité du mécanisme de serrage et déformé par ce procédé. La cavité présente un contour circulaire déporté. Le poinçon utilisé dans ce procédé recouvre la cavité. Une fois le fil relâché, un autre bout de fil est alimenté axialement jusqu'à ce qu'il en ressorte un bout, et le même procédé est répété pour former un autre clou semblable. Un appareil innovateur servant à réaliser ces opérations fait aussi l'objet de l'invention.
Binder John
Gabriel William L.
Wright Robert W.
Finlayson & Singlehurst
Illinois Tool Works Inc.
LandOfFree
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