Patent GB-191515953-A (GB)
Title: Improvements in Lasting Machines.
IPC: A43D21/02
Filed: 1915-11-12
Abstract: 15,953. British United Shoe Machinery Co., [United Shoe Machinery Co.]. Nov. 12. Stapling.-In a boot and shoe lasting machine in which five wire staples or like metallic fasteners are driven more or less parallel to the last bottom through the upper and the lip on the sole, the sole rest of the machine is used as a clinching-anvil. The invention is described as applied to a lasting-machine of the type described in Specification 14,453/97, [Class 17, Boots &c.], the tacking-mechanism of which is replaced by a stapling-mechanism. The wire w for the staples is led from a reel 137, Fig. 2, through guides 139, 141, and over a grooved feed disk 67, with which co-operates a freely mounted wire-retaining disk 71. The disk 67 is mounted on a shaft 66, which is driven through a one-way clutch by a rack 63 connected by a selfadjusting connexion 61 to one end of a lever 49 ; the other end of this lever is connected by a link 47 and crankpin to a shaft 41, which is actuated by worm gearing 43, Fig. 1, from the main shaft 3 of the machine. The lever 49 is slotted at 59, Fig. 2, to receive a movable fulcrum pin 55 carried by an arm 57 rigid with a shaft 33, which is geared to a shaft 27 adapted to be actuated by a toothed lever 23 from a. rack 21 formed on the usual knee-actuated positioning-slide 13 of the wipers. An arm 35, Figs. 1 and 2, projects from the lower end of the shaft 33 and is connected through an eccentric stud 38 and link 37 with a slide 39 in which is slidably mounted a spring-pressed pawl 40 adapted to engage teeth 42 on the driven member of the one-way clutch above referred to. The stud 38 carries a spring-pressed pin adapted to engage recesses in the stud bearing; in one position of the stud the pawl 40 is inoperative, but when the stud pin is in engagement with the other recess, the pawl locks the clutch and the wire feed is arrested. The wire w passes from the feed disk 67 through a covered duct 143, Fig. 4, which terminates at a point near wire-cutter members 93, 95. The member 93 is carried by a shaft 91 mounted in a bearing 89 on a slide 87, which is connected by gearing 83, 85, and links 81, 79, 77, Fig. 2, to the shaft 33 ; the member 95 is attached to a projection rigid with the bearing 89. The shaft 91, Figs. 2 and 4, is actuated by an arm 97 engaging a cam-slot 101 in a block carried by a staple-forming slide 103, which is reciprocated by a rack and pinion 118, 116 from a rock-shaft 109 operated by a pinion 113, rack slide 105, and a lever 8, Fig. 1, from a cam on the main shaft 3. The shaft 109, Fig. 4, also carries a rigid arm 117 adapted to coact with a roll 131 on an arm 129 projecting from one end of the shaft 127, the other end of which carries a toothed arm 125 meshing with rack teeth on the two members of a bifurcated stripper 123, which is arranged in close engagement with the sides of an anvil 121 rigidly attached to the machine frame; the staple is shaped round the anvil by bending-corners 157 provided on the slide 103. The stripper 123 raises the staple into a driver passage 147 formed at its top and sides partly in the slide 103 and partly in a member 151 secured to the slide. The staple is driven from this passage into the work by a driver 119 clamped in a split block 122, which is actuated by rack-and-pinion gearing 126, 127<1>, 132, 135 from a driver bar 133; this bar is raised against the action of a spring 10 and forcibly depressed substantially in the same manner as the driver bar of the machine described in the above-mentioned Specification. The slide 103 terminates in a nose-piece shaped to fit snugly against the upper and to force it into the angle of the sole, while the sole rest 159, Fig. 1, of the machine acts as a clinching- tool. In the operation of the machine, if the lasting is to begin at the sides of the shoe, the usual knee-lever is moved to render the wipers inoperative, and the rack slide 13 causes the fulcrum pin to be set for a short wire feed. The lasting proceeds until the toe is reached, and if it is also desired to use staples at the toe, the machine is stopped and the eccentric stud 38 is moved so that the pawl 40 will not become operative ; the knee lever is then swung so as to cause the wipers to advance and, by movement of the pin 55, the wire feed also is increased. The machine is then restarted and the toe lasted and secured by longer staples. If, however, it is desired to secure the toe by the usual binder, the stud 38 is turned so that the pawl 40 will render the wire feed inoperative; the ends of the binder may be secured by tacks or by single staples driven after appropriately setting the machine, the shoe being held so that the staples straddle the binder. Specifications 24,455/10, [Class 17 (ii), Boots and shoes, Construction of], 24,456/10, and 8825/14 also are referred to.