Improvements in and relating to nails, staples, spikes, hooks, brads, brobs or the like

摘要

264,933. Humphris, F. Oct. 30, 1925. Nails; hooks; staples.-Sheet-metal blanks x Fig. 1 which are folded to form nails of the shape shown in Fig. 2 or of other curved or sinuous shape have parallel-sided shanks and sharp points a4 the length of the shank exceeding twice the length of head and point combined, and the length of the point being less than the width of the blank. The head-part of the blank is widened. When folded as in Fig. 2 the edges a2 of the V-point are given a helical form a3. The nail may have a W-shaped point, Fig. 9, and a bulbous head closed to a point b5 and stiffened by indentations b3. A head may be formed by turning over the ends b6, Fig. 17. A hook-headed spike is shown in Fig. 13, the hook c having a channel form. A blank pointed at both ends is folded into S-form and bent to form a staple Specification 192,492 is referred to.