Patent GB-914947-A (GB)
IPC: B29C69/00
Abstract: 914,947. Setting studs. UNITED-CARR FASTENER CORPORATION. Dec. 7, 1960 [Dec. 21, 1959], No. 42183/60. Class 43. Apparatus for feeding and attaching fastener elements to a support material comprises a lower support member having a fixed lower tool secured thereto for receiving the support material thereon, an upper support member disposed in vertically-spaced substantially parallel relationship to the lower support member, a housing secured to the upper support member and extending upwardly therefrom and in substantially vertical alignment with the fixed lower tool, an upper vertically-reciprocable tool positioned in the housing, means associated with the upper tool to effect the desired vertical reciprocating movement thereof, rotatable element strip feeding means carried by the upper support member for feeding a strip of fastener elements through a passageway in the forward end of the upper support member, and means associated with the housing and feeding means for actuating the feeding means upon the vertical movement of the upper tool to place a fastener element into the path of the upper tool so as to be engaged by the upper tool and attached to the support material on the downward stroke of the tool. The machine comprises a base 1 which is a pedal 7 operated high frequency unit and an air compressor 3. On the base are attaching heads 4 and supply reels 5 for strips of snap-fastener studs 6. The heads have each an upper part 13 and a parallel spaced lower part 12 separated by a post 14. The reels supply strips of studs over a rotary reel 19 to a bore in a tool 8 above a tool 11. The tool 8 is at the lower end of a reciprocating member 18 within a housing 17 attached to a cylinder 9. The cylinder has a piston 39 and rod 40 secured to the member 18. Admitting compressed-air to the top or bottom of the cylinder lowers or raises the tool. The rod carries a sleeve 59 which during downward movement of the rod engages a hook like member 21 and moves it downwardly, guided by a rod 22. The member 21 carries a pivoting arm 23 with an end connection to a clutch roller 20 rotating within the reel 19. During downward movement of the arm the clutch slips and during upward movement the clutch drives the reel which is indexed by a spring-pressed double wheel device 28 which moves from one depression on the edge of the wheel to the next. A pivot 29 on a guide secured to the part 13 mounts the wheel device. A roller 33 engages beneath the stud under the tool 8. The roller pivots on a member 34, pivoting on the part 13, the arm being spring-biased to engage beneath the stud by a spring 37 on a rod 38, pivoting between the end of the member 34 and the housing 17. High-frequency current for heating the base of the stud is supplied to the lower tool 11 and to a metal block 49 having a spring-urged pivoting member 50 contacting the metal tool 8. In operation a strip of studs is fed by hand through a hole 57 in a post 14, between guides leading to the reel 19, then over a guide block and beneath the tool 8. The roller 33 is snapped beneath the stud. The operator presses the pedal 7 to supply compressed-air to the top of the cylinder 9 to move the tool downwards severing the stud from the strip and engaging it in a bore in the tool where it is retained by resilient members. The roller 33 disengages the stud and the tool lowers the rest on an article 10 placed over the lower tool 11. High-frequency current flows through the tool 11 to heat the stud to secure it to the article. Admitting air to the lower end of the cylinder 9 raises the tool which indexes the reel 19 to position the next stud under the tool 8.