Patent GB-190618006-A (GB)
Title: A Machine for Shaping and Attaching Pronged Metallic Ornaments or Spangles to Various Materials or Cloths as Scarfs, Sashes and the like.
Inventor: MACKENZIE JOHN WILLIAM
Filed: 1906-08-10
Granted: 1907-08-10
Abstract: 18,006. Mackenzie, J. W., [Bingham, G. W.]. Aug. 10. Trimmings; belts; shawls.-Relates to a machine comprising rotatable die parts and reciprocating punches for punching out, from a metal strip, blanks to form spangles or other ornaments, and for applying them to sashes, scarves, or other material or fabric. The blank is shown in perspective in Fig. 4, the parts forming the edges being triangular, as shown by dotted lines, so that, when subsequently bent over and clenched, they will fit as in Fig. 6. Each spangle is first punched from the strip 7, Fig. 3, by a punch 6, and forced by the punch into a die opening 4 in a. rotatable die 2 above the strip. The part 2, after receiving the blank, is rotated through 180 degrees, and the blank is forced out by a punch 9 into an opening 5 in a similar rotatable die part 3. This operation turns up the edges of the blank so that it appears as in Fig. 5. The part 3 is then also given a half rotation, and the blank is forced out by a punch 11 so that its upstanding points are forced through the fabric 14 previously placed on the work-plate 45. A plunger 12, normally resting between spring-closed jaws 13, first acts as a guide for the edges of the blank as it is pushed out of part 3, and is afterwards removed, allowing the spring jaws to turn down the edges of the blank inwards. The plunger then descends and stamps the blank flat. The working parts are arranged as in a sewing-machine, the plunger being actuated by the usual arrangement of cranks and connecting-levers contained in an overhanging arm. The three punches 11, 9, 6 are on the same casting 26, Fig. 2. The casting reciprocates vertically below the work plate on guides 27, and is moved by a roller that takes into a slot in a cam 25, the slot being constructed to give a dwell at the extreme upper and lower position. The cam 25 is mounted on the end of a shaft 24, which is given an intermittent rotation from a continuously rotating power shaft 15 by means of intermittent toothed gearing. The blank-holding members 2, 3 are geared together, and their movements are derived from the shaft 24, each of the members having one half rotation and one stop to each complete rotation and stop of the shaft 24. The gearing for driving the shaft 24 consists of a disk 17, Figs. 2 and 8, on the shaft 15, having teeth 18 on a portion of its periphery. The teeth are twice the thickness of the disk. Teeth 20, of the same number and thickness as the teeth 18, are formed, together with an additional half tooth, on a pinion on the shaft 24, and mesh with the teeth 18. The half tooth allows the plain periphery of the disk to pass idly, after each rotation of the pinion, between teeth 22, 23 on the latter. A similar device, but with two half teeth oppositely arranged on the pinion, is used to give the half rotations of the members 2,3. The pinion 36, which is mounted on a shaft 37, engages as before a disk 35 mounted on the shaft 24 and having teeth 38. The shaft 37 is thus driven intermittently, receiving half a rotation for each complete rotation of the shaft 24, and communicates its motion by a spur wheel 44 to one of two intermeshing spur wheels 43. The wheels 43 are attached, respectively, to the rotatable parts 2, 3, and cause them to rotate together.