Patent GB-561718-A (GB)
Title: Improvements in or relating to rivet sticking device
IPC: B21J15/32
Filed: 1943-01-27
Abstract: 561,718. Riveting. MURRAY CORPORATION OF AMERICA. Jan. 27, 1943, Nos. 1386 and 1387. Convention dates, Dec. 4, 1941, and July 20, 1942. [Class 83 (iv)] Magazines for holding a supply of rivets are constructed so that after the projecting rivet has been inserted in the work a further movement of the magazine causes the rivet to be released and, on withdrawal of the magazine, a further rivet assumes the ready position. The magazine may be attached to a riveting-gun. A skelp 16, Fig. 3, with an open slot 26 is filled from a hopper with rivets 17 stacked up by a plunger 24 having a lug 25 projecting through the slot for attachment to a spring 27 passing round a pulley 21 mounted on a hinge pin 19 that connects a hinged arm 22 by lugs 18 welded to the skelp. The other end of the spring is attached to a cross-piece 28 removably located in a slot in the covers. Slots in the front end of the skelp receive wire springs 33, anchored in the lugs, that prevent the leading rivet from being expelled from the magazine. In use, after the rivet has been entered into the hole, further pressure against the work causes the springs to open laterally releasing the rivet but returning to retain the next on removal of the magazine. Modified forms of spring are illustrated and described. In another form, the magazine has its end curved through 90 degrees and after insertion of a rivet is moved transversely thereto to effect release. In another form, the end is curved as shown in Fig. 13 ; the leading rivet is arrested by inclined parts 78 at the end of the channel, a notch in the upper wall of the magazine being closed by a spring piece 79 secured at 81 ; the remaining rivets are held up by a lug 82 stamped from the spring 79. After the rivet has been inserted, lateral movement of the magazine causes the rivet to ride up the cam, raising the spring and allowing the. head to pass through the notch. At the same time the lug 82 is raised to free the next rivet which moves sufficiently to clear the lug 82 but is then arrested by contact with the work. On removal of the magazine, the lug 82 arrests all the following rivets and the released rivet passes to the end of the slot ready for insertion. When the device is to be attached to a riveting gun 86, Fig. 16, the skelp 16 is provided with a lug 98 between which and the end 101 of a plate 88 a supporting spring 99 is confined. Spring lugs 92, 93 embrace the skelp 16 and extensions 96 prevent rotation in the clips. Notches in the cover engage the lugs to limit the longitudinal movement. The plate 88 is adjustably secured to the gun at 91 according to the pitch of the rivets so that by pressing on the lug 98 one rivet may be inserted during the closing of that previously inserted. In a further modification, the end of the channel in the skelp 16 is closed by jaws 140, Fig. 21, recessed at 142 to fit the skelp, bevelled at 146 to suit the rivet head, and recessed at 144 to pass the shank of the rivet. The jaws are 'retained in place by springs 166, retained in notches 170 in the jaws, and eyed at 162 for engagement by screws 176 that secure a distance piece 174 between the lugs 114 that carry the pivot for the pulley and cover. End pressure on the magazine causes the jaws to spread pivoting about the end of the skelp, as . controlled by the springs 166, until the surfaces 148 contact with the work. This releases the leading rivet which is driven into the work by pressure from the following rivets which are again held by the jaws on removal of the magazine.