The Hook-Case Crochet Set: Hooks of Every Size Swing From One Rivet in Their Own Case

"At their other ends, the hook needles 7 are perforated and loosely pivoted on the transverse pin or rivet 8 extended through and fastened to the edges of a tapered sheet metal handle or case 9. This handle 9 is channel-shaped in cross section, and has inturned edges on one face." "The contracted end of the handle 9 has a U-shaped form of such size that but one hook needle 7 at a time can be turned outward into an operative position."

**Case.** Cut brass sheet to a tapered strip 15 cm long that will fold into a channel 8 mm deep, 25 mm wide at the large end and 8 mm at the small end. Fold the sides up in the vise, then turn their edges in 2 mm along the open face. At the small end squeeze the channel into a U that a 4 mm rod just springs into. **Hooks.** Cut three 10 cm lengths of 4 mm steel rod. File the front 3 cm of two of them down to 2.5 and 3 mm, and file a hook at the end of each of the three, copying bought hooks of the same sizes. Hammer the other 8 mm flat on the anvil and drill each for a 3 mm pin. **Rivet.** A quarter of the way from the small end, as in the patent drawing, drill both sides of the case 3 mm. Pass a piece of 3 mm brass rod through the case and all three hooks and peen both ends over. **Wedge and lock.** Cut a tapered brass plate that slides in from the large end under the turned-in edges and closes the case. Rivet a small brass segment to the closed side at the large end so it turns, with its edge bent over to catch the wedge plate's end. **Test.** Turn out each hook in turn through the U, slide the wedge plate in and lock it. Hang the spring scale on the hook's tip and pull across it until it moves; then crochet 20 stitches with each size.

**Thorinda V. Parker** of Minneapolis, Hennepin County, Minnesota, filed US 1,210,975 on 29 June 1916; it was patented 2 January 1917. The flat wedge plate 10 slides into the case just below the inturned edges and closes its open side; a lock segment 11, pivoted to the closed side, turns its inturned flange over the wedge plate's outer end. The spring of the contracted end may itself hold the outturned needle, but with the wedge plate in it is held positively; the pivot 8 is a considerable distance from the contracted end, and the other hooks stay inside. Folded in, the case encloses them all. Her claims cover the hollow handle with its displaceable side plate, the hooks projected one at a time, and the lock piece; and the tapered handle with flanged edges and wedge plate, the hooks pivoted far from the contracted end, and the lock segment. **Honest limits.** A hand-folded brass case and hand-filed steel hooks stand in for hers; she gives no sizes, and the rivet's place is taken from her drawing. The notebook treats the case and hook as rigid; its lengths and force are examples. The pull you read is the result.