Patent GB-190608858-A (GB)
Title: Improvements in or relating to Machines for Setting Grommets, Buttons, Rivets and the like.
Inventor: BOULT ALFRED JULIUS
Filed: 1906-04-12
Granted: 1907-04-11
Abstract: 8858. Boult, A. J., [S. O. & C. Co.]. April 12. Button-setting machines ; eyeleting ; eyelets.- A machine for setting grommets, buttons, rivets, &c., with which a washer or the like is used, comprises a punch and a setting-device to which grommets and washers are fed from oscillating hoppers through shoots and feed-slides, a washercontaining well being preferably employed. In Fetting grommets, the stock is placed on the table 20 and perforated by means of the punch a operated by the treadle-rod 23, after which it is threaded over a grommet held on the normallyraised centring-pin e. The elevation of the setting treadle-rod 28 causes the retraction of the feedslide h, Fig. 4, by the spring 54, the roller 52 traversing the cam face 56, Fig. 2. The motiou of the feed-slide is limited forwardly by a shoulder engaging the roller 60, and backwardly by the pin 58 engaging the guide 53. The grommets are fed to the forked slightly raised end of the slide from a hopper f, which is oscillated by a link 40 and lever 27 and has apertures with gates 41 and preferably also a hinged door with a latch. A shoot g receives the grommets, which can only emerge shank upwards, and delivers them singly to spring fingers 51 through the turnstile i, intermittently rotated by a ratchet 48, Fig. 4, and a pawl rocked by a link 50 from the lever 27. Surplus and incorrectly-positioned grommets are turned into a shoot 45, Fig. 4, by ribs 43, 44 on the guard 42. As the grommet feed-slide is withdrawn, the washer feed-slide o, Figs. 3 and 9, is advanced through the guideway 78 over leaf springs 79 by means of the actuating-block t, which carries a laterally sliding pin 80 engaging a short slot 81. The actuator is operated against the spring 86 by a cam 88 on a spring-controlled bell-crank lever 89, which is pivoted to the treadle rod 28, its upper end normally bearing on the adjusting-screw 91, thus permitting the cam, when the slide has been retracted, to return on the other side of the roller 84. The washers, preferably shaped as shown at q, Fig. 14, are fed from an oscillating washer-hopper j having a tray 68 with parallel tracks 69, Fig. 8, leading to apertures 70, and are only permittt d to escape convex side downwards by reason of the tapered bar 71<b> which raises and finally throws back incorrectly positioned washers. The washers delivered to the raceway k travel on their edge to the outlet 72, which is turned at an angle, whence they fall to an auxiliary raceway l, and travel, convexity upwards, to a washer well m, Fig. 9. Thence they are pressed into a seating at the end of the feed-slide o by a spring - controlled follower n intermittently operated from the setting - lever 27, Fig. 2. The bevelled retaining-strip s, Fig. 9, being fixed to the pin 80, has a slight forward movement relative to the feed-slide, and thus separates the washers for delivery one at a time. The washers in the well are jarred at intervals by the agitator u, Figs. 3 and 9, which is operated from the centring- pin lever 63 through a lever 99 and a spring-controlled link 103, the link and agitator forming a toggle, whereby the agitator is reciprocated and also given a slight rocking movement. As the washer feed-slide is advanced, the spring-controlled set c, Fig. 9, is depressed, and coming into contact with the lip of a washer rides over and drops into the central aperture. The setting - plunger 26 continues its move downwards, and the feed-slide having been withdrawn, it causes the set c to force the washer into contact with the stock and clinch the grommet shank over the washer.