Patent GB-190517431-A (GB)
Title: Improvements in or relating to Machines for Inserting Fasteners or Metal or Wire in Leather Goods and the like or for Producing as well as Inserting said Fasteners.
Inventor: BOULT ALFRED JULIUS
Filed: 1905-08-29
Granted: 1906-11-29
Abstract: 17,431. Boult, A. J., [United Shoe Machinery Co.]. Aug. 29. Nailing ; nails.- Relates to a pattern device applicable to wire - slugging and loose nailing - machines for inserting two sets of fasteners in a predetermined design, for instance, to insert a complete row of fasteners around the outer edge of a boot heel, and a partial inner row properly and uniformly located with respect to the outer row as shown in Fig. 12. The invention is shown applied to the machine described in Specification No. 6971, A.D. 1898, in which wire is drawn from a reel and cut off to form slugs, which are carried beneath a driver, which drives them into holes previously formed in the stock by an awl, which also feeds the work. In the present case, wire is drawn from two reels and the feeding and driving devices are in duplicate, but one set may be operative or inoperative, while the operation of the other set is continuous. The means for controlling the wire for forming the inner row of fasteners comprise a dial 10 rotatably mounted on a stud fixed to a bracket in the head of the machine. The dial is formed with teeth adapted to be engaged by a pawl 16 pivoted to the arm that actuates the awl bar, so that the dial is moved forward one step at each cycle of operations of the machine. Retrograde movement of the dial is prevented by a locking dog 18. Wheu the machine is stopped, the dial is returned to starting position by a coiled spring 20, Fig. 10. Around the dial are controlling-pins 22 adapted to be moved into operative position as shown in Fig. 4 by a manually-operated spring-controlled plunger 33, Fig. 7, and restored into inoperative positions by a rotatably-mounted spring finger 35. In their operative positions, the pins engage and elevate the end 24 of a lever 26, Figs. 4 and 9, pivoted to the frame and connected at its lower end to a controlling-lever 30. The lever 30 is formed with a shoe 32 adapted to engage rollers 39 on the pawls that operate the wire-feed rollers. When the lever 24 is raised by the pins, the pawls are disengaged from the ratchets and the wire is not fed forward. The arrangement of the pins around the dial determines the sequence in which the fasteners are inserted. Light springs are provided to retain the pins in their operative positions. In order to repeat the design on different pieces of stock, the dial is returned to its original position whenever the machine stops. This is effected by the spring 20, Fig. 10, after the locking dog 18 is raised by a link 47, Fig. 4, on a rock-shaft 40. The rock-shaft is operated through a system of link-work by the extra movement imparted to the horn depressing lever in order to remove the work. A pin on the locking dug engages the lever 26 and raises that also clear of the pins. When the machine is restarted, the rock-bar, locking-dog, and pawl 16, are returned to their normal position by springs. The starting position of the dial is governed by a stop-lever 50, Figs. 9 and 10, mounted on the bearing 31 and within the hub of the lever 30. The position of the stop lever is regulated by an adjustable spring top 53, with which it is held in contact by the spring 54. The dial may be temporarily locked in any position by a manually-operated spring-controlled plunger 60, Fig. 4. A rim 84, Fig. 7, surrounding the dial is provided with a projection 85 in line with the plunger. In operating on boots and shoes, the dial is never required to make a complete revolution but, should it be necessary to operate on large pieces of stock where more than one revolution would be required, a notch 87, Fig. 10, is formed in the periphery of the dial. At the end of a complete revolution, the notch comes opposite the pawl 16, the operator then stops the machine, and the dial returns to its starting position. The rock-shaft 40 may also be manually operated, to avoid the necessity of adjusting the whole of the pins when it is required to let the dial remain inoperative, or to operate continuously. To avoid the necessity of re-adjusting the pins when dealing with right and left shoes respectively, means are provided for adjusting the starting position of the dial. These means comprise a hand - lever 70 connected by means of a link 72 with the stop lever 50. The lever 50 is locked in its adjusted position by a lug 931 in the link 72 engaging behind the head 83 of the link 47 previously described. The starting position of the dial may also be varied by changing the position of the stop 53, and hence the location of the inner rows of fasteners may be varied.