Duo-Fast Corporation

John E McMenamin

James E Kerrigan

A hog ring fastener has a straight line base and legs each perpendicular to the base but offset at an angle to each other permitting the use of relatively inexpensive 'C' points. A stick of the fasteners is generally channel shaped, with the legs and bases all angularly inclined to the longitudinal axis of the stick. The assembly of fasteners is made in a multiwire process by severing blanks and forming the legs at a bias to a line perpendicular to the wire direction. A tool and method for applying the fastener carries out two different deformation stages, one being a predeformation stage to incline the legs of the fastener inward to a preferred application position.

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Elmhurst, IL, United States of America

John E McMenamin