Patent GB-191216260-A (GB)
Title: Improvements in or relating to Machines for Setting Lacing Hooks, Lacing Studs or like Fasteners.
Inventor: BOULT ALFRED JULIUS
IPC: A43D100/10
Filed: 1912-07-11
Granted: 1913-07-10
Abstract: 16,260. Boult, A. J., [United Shoe Machinery Co.]. July 11. Setting lacing-hooks.-Relates to a machine for setting lacing-hooks, lacing-studs, &c. which is described as a duplex machine for setting hooks simultaneously in two superimposed layers of material but may be adapted for setting hooks one at a time. Setting-mechanism.-The hooks carried by flanges 6, Figs. 1 and 9, on supporting plungers 5 are clinched in the material by upsetting-dies 1 secured by a set-screw 4 in an arm 2 of a frame 3 pivoted to the main frame of the machine. Each plunger 5 is normally held retracted by springs 8 in guideways 7 on the main frame and is forced towards its co-operating die 1 by a plunger 9, which is provided with a spring-pressed pin 10 to engage and hold the hook in position during the setting operation. The plungers 9 are mounted in arms projecting from the frame 3 and are reciprocated by bellcrank levers 12, 13, which have adjustable blocks 14 engaging the plungers on their outer ends and intermeshing teeth on their inner ends, the lever 13 also having an arm provided with a cam roll engaging a cam on the main driving-shaft 20. Work-feeding mechanism.-Before the plungers 5 are retracted, the frame 3 is swung on its pivot through a cam-actuated lever 24, Fig. 13, and links 25, 26, 27 provided with a feedregulating arm 28, so that the dies 1 remove the hooks sideways from the flanges 6 and feed the work, the dies being held by the pins 10 in engagement with the hooks during the feeding movement. The work rests on a stationary guide-plate 30 against edge guides 31, and is clamped by jaws 33, 34, Fig. 1, which are formed on bell-crank levers 35, 36 and are held in engagement with the work by a spring 37 except during the feeding movement, to allow which they are released by a cam acting on an extension of the lever 36. The jaws are opened to allow the insertion and removal of the work by mechanism under the control of the operator which comes into action as the machine stops. The mechanism comprises a lever 39 one end of which engages a projection 40 of the lever 36; to the other end is pivoted an arm 41 connected by a spring 42 to the lever and by a rod 43 to a foot treadle and also provided with a cam roll 44 adapted to be engaged by a cam projection when the setting-plungers are retracted. When the machine is started, the rod 43 is depressed to swing the roll 44 out of the path of the cam projection, but as the machine comes to rest the rod 43 is allowed to rise, and the lever 39 is actuated to open the clamping-jaws. Lacing-hooks, feeding.-The hooks are fed from a hopper 46, Fig. 1, along raceways 45, Fig. 13, from which they are pushed past spring- pressed latches 58 to the flanges 6 by feed fingers 50, each feed finger being pivoted to a lever 51 and having a heel engaged by a spring- pressed pin 52, so that the end of the finger moves in practically a straight line, being guided along a straight portion 53 of the raceway. The hooks are correctly positioned on the flanges by the pins 10, by extensions 59 of the latches 58, and by the projecting ends of guard plates 49 for the raceways. Each lever 51 is connected by a link 56 with an arm 57 integral with the lever 24 so as to secure a proper relation between the work feed and the hook feed. For use with different sized hooks, the path of movement of the finger 50 may be changed through an adjustable connexion between the link 56 and arm 57 comprising an eccentrically mounted pivot pin 60. The hopper 46 is smaller at the centre than at the ends, and contains brushes rotated alternately in opposite directions from a shaft 80 provided with a clutch which is controlled by a rod 84 connected to a foot treadle. Driving-mechanism.-The main driving-shaft 20 is driven from a pulley 86 through a clutch and brake controlled by a suitable mechanism, a well-known form connected by a rod 98 to a foot treadle being described; this is arranged so that the machine comes to rest with the plungers in a retracted position. The treadle mechanism comprises a rock-shaft 103, Fig. 8, having projecting arms 106, 107 provided with pins 109, 108, which extend over the bent end of the rod 43 and the ends of the rods 84, 98 respectively. The shaft is rocked by a treadle 104 so that all three rods are depressed, the rod 43 being actuated before the rod 98, so that the workclamping jaws are closed before the driving- shaft is thrown into operation. The rod 84 is connected by a chain 110 to a treadle 105 mounted freely on the shaft 103, so that the brush and hopper mechanism may be thrown into operation without starting the whole machine.