291680-A is referenced by 1 patents.
291,680. Power, R. F. Nov. 21, 1927. Paper fasteners.-A paper fastener of bifurcated type has the prongs 2 spaced apart so that when passed through a perforation or perforations in the papers A to be secured and clinched over, the papers are clamped at two separate spaced areas between the prongs and the flat head 1 which extends wholly beneath the clinched prongs as in Fig. 2. Fig. 7 shows a modification made from a single blank and forming a pair of bifurcated fasteners 2, 2a spaced apart and integral with the flat head 1. Modifications are described in which the prongs are stamped out from a flat blank constituting the head of the fastener. The ends of the head may be slightly bent upwards to facilitate gripping in removing papers from the fastener.