Patent GB-190628687-A (GB)
Title: Improvements in Slugging Machines for Boots and Shoes.
Inventor: PERLEY RICHMOND GLASS
Filed: 1906-12-15
Abstract: 28,687. Glass, P. R. Dec. 16, 1905, [date applied for under Patents Act, 1901]. Void. [Published under Patents &c. Act, 1907.] Nailing.-Relates to a slugging-machine. The machine is started on the depression of a treadle, which raises a spring-controlled bar 11, Fig. 4, and, by a wedge action, causes a collar 8 to slide along the main shaft C and force the loose driving pulley 2 into engagement with a fixed clutch member 1. After a complete rotation of the shaft, and at a predetermined point, a stud 29, carried at one end 28 of a bell-crank lever 21, rides off a cam-groove 30 in the member 1 into a recess in the groove ; this causes the other end of the lever, which engages the bar 11, to lower the latter and so unclutch the pulley. At the same time, through the adjustable connexions 50, 48, 40, two rollers 38 move along wedge-shaped faces at the free projecting ends of a spring band brake, and apply the brake to the member 1. A locking-plate 57 is provided for preventing the treadle from moving the pulley sufficiently far to clutch it to the shaft, when it is desired to inspect or adjust the various parts of the machine. This plate is normally held by a spring pin 60 in such a position that its upper end comes between the collar 8 and a bearing, consisting of a steel ring 62 and a brass ball-containing ring 63, which is located in a recess in an adjustable collar 61 on the shaft C. A similar bearing is placed next the hub of the pulley 2. When the plate is lowered, however, the bar 11 is thrown backwards on the shaft sufficiently to prevent it, when raised, from actuating the collar 8. The work-support 65 is elevated when a slug is ready to be driven by a rod 70, Fig. 1, which is actuated through a pivoted lever 68 from a cam-groove 67 in the member 1. The driving-mechanism consists of a driver carried by a bar 71, which is provided with a roller 72 running in a cam 74 on the shaft C. The machine head A<1> is also provided with the usual foot-plate 76, driver guide 77, hinge-plate 78, and a swinging, adjustable edge-gauge 79. For perforating the work, the awl-bar 85, Fig. 5, is mounted in an-oscillatory head B, Fig. 1, and is connected by segmental gearing to an arm 96 having a roller 97 which runs in a groove in the cam 74. This groove.has a depression into which the roller moves periodically to force the awl into the work. The head B is oscillated to feed the work forwards by blocks 116, Fig.. 5, on the end 115 of a stud 110 projecting through a slotted arm 109, which is carried by a rock-shaft 102. The latter is actuated through an arm 104 by a roller running in a cam 108. By adjusting the position of the blocks 116, the extent of oscillation of the head B can be varied to vary the feed. The cam 108 is also grooved to receive a roller 118, Figs. 1 and 6, on an arm 119 depending from a sleeve 120 loosely mounted on a rock-shaft 121 ; the sleeve is provided with a pair of spring pawls 127, which engage a ratchetwheel 128 on a wire-feeding wheel 129. The wire passes from a reel 149<a>, Fig. 1, between this wheel and an adjustable presser-wheel 130, Fig. 6, and is fed forwards by the pawl-and-ratchet mechanism as the sleeve 120 is oscillated. The amount of feed is adjusted by altering the position of a spiral cam 139, Fig. 6, against which bears an arm 138 depending from the sleeve 120. From the wheels, the wire passes into a groove 148 between two bars 147 removably mounted in oblique channels in the machine head A', and from there into an adjustable vertical guide 152, which has a flaring mouth 156. From this, it passes into a carrier 157 secured to a reciprocating shaft 158, Fig. 5, which is actuated by segmental gearing 174, 175. from a lever 178 having a conical roller which engages a cam 179 on the drive shaft. The shaft 158 is surrounded by a loose sleeve 160, which is engaged and rocked by the divided clamp 161 of an arm 162 actuated by the cam 108. The sleeve is prevented from moving longitudinally by shoulders 165,166. At the front end of the sleeve is an arm 167, Fig. 6, carrying an adjustable cutter 168, which is opposed to a similar fixed cutter 171 carried in a block 172 on the machine head A<1>. When the required amount of wire has been fed, the rocking of the sleeve 160 causes the cutters to cut off a slug, which drops into the carrier 157 immediately beneath the driver. The horn rises to clamp the work, and simultaneously the nail is driven and the work perforated by the awl.