Mandrel jaw and method of manufacture
AssigneeUSM Corporation
InventorsClarke R. Sutherland, Frederick A. Skinner
Life of this patent
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Abstract
A mandrel jaw and a process for forming it from a strip of steel including the steps of forming a shape, bending portions of the shape and then stamping the bent body into the configuration of the jaw.
Claims16
A mandrel pulling jaw for setting rivets, said jaw comprising:
- a central body formed with a generally triangular flat surface and a conical outer surface;
- a first and a second arm attached to said body, said first arm being shorter than said second arm, said first arm being folded over and disposed upon said body and said second arm being folded over and disposed upon said first arm;
- a central groove disposed within said jaw and extending longitudinally from the apex of said body to the base and a plurality of teeth disposed transversely to said groove.
A process of forming a mandrel jaw from a strip of metal, the steps which comprises;
- forming a body having a first and a second arm extending therefrom;
- folding said first arm over said body and then folding said second arm over said first arm;
- stamping said body into a generally conical shape with a flat surface on a plane parallel with the axis of the cone and stamping a central groove along the axis of said cone and forming teeth transverse with said axis so as to form said jaw.
A mandrel pulling jaw for use in a rivet setting tool, comprising a body with a generally triangular flat inner surface having a central groove extending longitudinally from the apex of said body to its base and a substantially conical outer surface, characterized by the fact that said jaw is formed of a central body portion, a first arm on one side of, integral with, and folded over so as to be disposed upon said central body portion, and a second arm on the side opposite said first arm and integral with said central body portion, said second arm being folded over and disposed upon said first arm.
A method of making a mandrel pulling jaw, characterized by the steps of forming a central body portion in a strip of metal, said body portion being of generally triangular shape and having a first and a second arm extending on opposite sides therefrom, folding said first arm over said body portion from one side, folding said second arm over said first arm from the opposite side, stamping said body with said arms folded thereon into a generally conical shape and forming a flat surface on a plane parallel with the axis of the cone, and stamping a central groove in said flat surface along the axis of said cone.
Dependencies are inferred from the claim text.