Adjustable head piece

Claim 1

In a cap formed of sheet material cut, secured and folded to provide a flexible crown part and head band therefor of substantially uniform depth having opposite side walls extending from the front to the rear ends of the cap, each of said side walls being respectively provided along its longitudinally extending top and bottom edges with overlapping downwardly and upwardly presenting inturned flaps, one of said side walls being continuous in length between said ends of the cap to provide a pair of wall sections of unequal length respectively having end portions telescopically interengaged for movement relatively to one another whereby to adjust the head band to a selected size, said crown part being peripherally secured to the upper edge portion of the upturned bottom flap of said head band, the upturned bottom flap of a first one of said overlapping end portions of the head band in the region thereof below said crown part having a pair of parallel slits of substantially equal limited length extending longitudinally inward from its free extremity to provide an end tab which is foldable back against said upturned bottom flap of said first end portion of the head band without any corresponding turning or folding back of any portion of the crown part of the cap, the inner face of said tab being coated with a pressure sensitive adhesive which is inherently capable under pressure of said adhesive against the upturned bottom flap of said second one of said overlapping end portions to permanently seal said overlapping end portions of the head band together, said tab serving as a means for indexing the head band to any one of several head band sizes marked on the upturned bottom flap of second one of said overlapping end portions of the head band, and a removable backing strip disposed in covering relation to said adhesive for precluding the adherent capability of said adhesive to seal together said telescoped end portions of the head band while the same is being adjusted to size, said adhesive covering strip being removable from said tab when the same is folded back to expose said adhesive and render it effective to seal said telescoped end portions of the head band together after the same have been relatively shifted within the limits of their overlap to provide a selected size for the head band.