Method of making miter frame corner construction

Claim 1

A method of making a miter corner construction comprising the steps of providing three frame members proportioned for mated engagement at their respective forward ends, each frame member having two spaced parallel longitudinally extending ribs forming a cavity therebetween, providing a three-branched connector clip proportioned for slidable placement within said respective cavities, the thickness of said respective branches being less than the height of the adjacent ribs, the laterally opposite edges of said branches having notched portions therein, slidably interengaging said three frame members with the respective corresponding branches of said connector clip, slidably moving said members towards each other along said respective branches until the forward ends of the members come into mutual mated engagement, whereby said branches are disposed within corresponding cavities of said members and the ribs extend above the adjacent clip branches, moving a swaging tool along a substantially single unidirectional path toward and into contact with the interengaged frame members and connector clip, thereby in a single operation swaging sections of said respective ribs inwardly into the notched portions of the adjacent branches and simultaneously swaging other selected sections of said respective ribs inwardly into overlying engagement with the adjacent branches, whereby said frame members and said connector clip are thereafter held locked against both transverse and longitudinal movement relative to each other.

Claim 2

A method of making a miter corner construction comprising the steps of providing three frame members proportioned for mated engagement at their respective forward ends, each frame member having two spaced parallel longitudinally extending ribs forming a cavity therebetween, providing a three-branched connector clip proportioned for slidable placement within said respective cavities, the thickness of said respective branches being less than the height of the adjacent ribs, the laterally opposite edges of said branches having notched portions therein, slidably interengaging said three frame members with the respective corresponding branches of said connector clip, slidably moving said members towards each other along said respective branches until the forward ends of the members come into mutual mated engagement, whereby said branches are disposed within corresponding cavities of said members and the ribs extend above the adjacent clip branches, moving a swaging tool along a substantially single unidirectional path toward and into contact with the interengaged frame members and connector clip, thereby in a single operation swaging sections of said respective ribs inwardly into the notched portions of the adjacent branches and simultaneously swaging other selected sections of said respective ribs inwardly into overlying engagement with the adjacent branches, whereby said frame members and said connector clip are thereafter held locked against both transverse and longitudinal movement relative to each other.