Patent GB-190911119-A (GB)
Title: Improvements in or relating to Nail Assorting and Delivering Mechanisms.
Inventor: JUSTICE PHILIP MIDDLETON
IPC: B23Q7/12
Filed: 1909-05-11
Granted: 1910-05-11
Abstract: 11,119. Justice, P. M., [Plant, T. G.]. May 11. Loose-nailing.-A nail sorting and delivering mechanism is shown applied to a heel-nailing machine. Nails from a hopper 1, Fig. 1, supplied from a shoot 13, which has an adjustable opening at the bottom, are lifted by a bucketwheel on to a shelf 3, which guides them to the upper end of a raceway 4 formed by two rolls rotated by gearing 9, 11, 12. To throw off misplaced nails on the raceway, corrugations 20 are formed on the rolls, a spring plate 22 being fitted over the corrugations to limit the upward motion of correctly-positioned nails. From the rolls, the nails are delivered on a second raceway 19, Fig. 7, whence they pass sideways into recesses 42 in a rotating turret 26. A reciprocating spring finger 28 assists the nails in moving down the raceway. The turret is given a positive intermittent rotation by the mechanism shown in Fig. 10. A shaft 44, thrown into action by an automatically-operated " Horton " clutch, is fitted with a fixed sleeve 45 provided with spring-pressed pins 46 engaging a loose sleeve 47. A third sleeve 49 on the shaft is provided with a pair of longitudinal lugs which engage in recesses in the sleeve 47. The sleeve 49 is fitted with a cam-groove, and with a worm 52 engaging teeth on the bottom of the nailreceiving turret 26. A roller 54, supported from the frame of the machine, rides in the cam-groove. The sleeve 49 is thus given a longitudinal motion when the shaft rotates, which is so adjusted that, while the sleeve moves to the right, the threads of the worm 52 turn idly in the cogs 55 and do not rotate the turret; during the movement in the other direction, both the rotary and longitudinal movements of the sleeve tend to rotate the turret. The spring- connexions 46 allow the worm to become disconnected should the turret jam. A small cam, operated from the sleeve 49, actuates a bellcrank lever, which reciprocates the spring finger 28 on the nail race. When the required number of nails has been delivered to the turret, a counting-device, shown in Figs. 9 and 12, throws the clutch 43 out of gear. A hollow stud 97 carries a pinion 98; a pin 100, which is provided with an arm 101 carrying a projection 102, passes through the stud, and can be rotated by pressing the pin inwards against a spring 106. The projection 102 can thus be brought to engage with any one of a series of holes in the pinion 98. A rib on the sleeve 49 engages with one of the teeth of the pinion 98 during the rotation of the shaft, and, as it moves longitudinally, rotates the pinion. Part of the rib is cut away so that, on the backward movement of the sleeve, the pinion is not rotated. When the required number of nails has been delivered, the arm 101 on the pin 100 strikes the end of a lever 111, which throws the clutch 43 out of gear and permits the counter to return to zero. The nails are released from the turret by the operation of a carrier, which is moved from a position under the turret to a position under the hammers at definite intervals through gearing operated from the driving- shaft. As it reaches its position below the turret, the carrier strikes a lever which rotates a cover-plate on the bottom of the turret, until holes in the cover-plate correspond with the recesses in the turret; the nails then fall into distributing-tubes, which lead them into desired positions on the carrier. As the carrier swings away from the turret, it moves a second lever, which throws the clutch 43 into gear, thus starting the rotation of the turret. Specification 20,722/06, [Class 17, Boots &c.], is referred to.