Stock material for use as edging strip

Claim 1

A BUILDING-CORNER EDGING STRIP COMPRISING A CARRIER WEB MADE OF COILABLE FIBROUS MATERIAL AND HAVING A SHALLOW LENGTHWISE LOOPED PORTION EXTENDING INTERMEDIATE THE LENGTHWISE EDGES OF THE WEB, AND A REINFORCING WEB MADE OF COILABLE SHEET MEATAL AND HAVING IN ONE OF ITS SIDES A LENGTHWISE GROOVE EXTENDING INTERMEDIATE THE LENGTHWISE EDGES OF SAID WEB AND ON THE OTHER SIDE A LENGTHWISE RIB OPPOSSITE SAID GROOVE, SAID RIB BEING OF A TRANSVERSE WIDTH IN EXCESS OF THE MAXIMUM WIDTH OF SAID GROOVE, SAID FIBROUS WEB BEING COEXTENSIVE IN LENGTH WITH SAID SHEET METAL WEB BUT WIDER THAN SAID WEB AND ATTACHED ALONG THE TWO LENGTHWISE MARGINAL PORTIONS OF THE FIBROUS WEB DEFINED AND SEPARATED BY THE LOOPED WEB PORTION TO THE SHEET METAL WEB ON THE SIDE THEREOF HAVING SAID RIB IN A POSITION IN WHICH SAID RIB AND SAID LOOPED WEB PORTION ARE IN LENGTHWISE ALIGNMENT AND THE MARGINAL PORTIONS OF THE FIBROUS WEB PROTRUDE LATERALLY FROM THE LENGTHWISE EDGES OF THE SHEET METAL WEB, THE LOOPED WEB PORTION BEING LEFT UNATTACHED TO THE SHEET METAL WEB AND HAVING A TRANSVERSE WIDTH IN EXCESS OF THE TRANSVERSE WIDTH OF SAID RIB, WHEREBY UPON LENGTHWISE FOLDING OF THE EDGING STRIP TO AN ANGULAR CROSS SECTION SAID RIB FORMS A REINFORCING METAL BEAD LOCATED OPPOSITE THE GROOVE AND EXTENDING WITHIN SAID UNATTACHED LOOPED FIBROUS WEB PORTION, SAID COILABLE SHEET METAL WEB BEING OF A RIGIDITY SUFFICIENT TO IMPEDE LENGTHWISE BENDING OF THE WEB EXCEPT ALONG SAID GROOVE, BUT PERMITTING COILING OF THE METAL WEB TOGETHER WITH THE FIBROUS CARRIER WEB.