Patent GB-191308134-A (GB)
Title: Improvements in or relating to Machines for Slashing Insoles or Soles of Boots and Shoes.
IPC: A43D8/48
Filed: 1913-04-07
Granted: 1914-05-07
Abstract: 8134. Gouldbourn, J., Jerram, A. E., and British United Shoe Machinery Co. April 7. Slashing. - Machines for slashing the soles and insoles of boots &c., to render them more flexible, are stopped automatically when a predetermined length of the sole has been operated upon; and machines of the kind described in Specification 541/12, having two cutters B, B<1>, Figs. 3, 4, and 6, relatively slidable to vary the length of slash in accordance with the width of the sole at any point and operated to feed the work after slashing it, are provided with special means for operating the cutters and the presser-foot J. The cutters are carried by slides working on a frame C pivoted at C<1> and are reciprocated thereon to slash the work on the table A' by toggles F<2>, F<3> operated by an arm F<6> pivoted on the frame C, a connecting-rod G, and a crank on the shaft G'. The frame C is rocked to cause the cutters to feed the work to the right, as seen in Fig. 3, by a toggle C<3>, C<4> operated by a toggle D, D<1>, a connecting-rod D<4>, and a crank on the shaft G<1>. When a toggle J<5>, J<6> is straightened against the action of a spring J<8> b<y> a chain J' connected to a treadle to rock a shaft N' to start the machine, it rocks a bent lever J<2> on its pivot J<3>, and the presser-foot J pivoted thereto and controlled by a spring J<4> is thereby brought into contact with the work beneath a bridge A<3>. When the work is being fed, the presser-foot is rocked out of contact with it by a rod K connected to the arm F<6>. The length of this rod is adjustable. The cutter-slides B<2>, B3 are connected by pins and slots H', Fig. 4, to arms H pivoted at H<1> to the frame C. The free ends of these arms are bent to form gauges H<2> which are pressed by a spring H<4> against opposite sides of the work and so serve to regulate the length of the slash at each point of the work. An adjustable connexion I<2> between the cutters and the arm H enables the width of the margin between the slashes and the edge of the work to be regulated, and adjustable connexions B<4>, B<5>, B<6>, B<7> between the cutters and their slides enable the depth of cut to be regulated. A clutch of the kind described in Specification 720c/07 is provided on the driving-shaft. When the machine is working, a swash-ring R running in an inclined groove in a rotating member of the clutch causes the fork R<1> that carries it to rock in its bearings in a member R<4>, Fig. 2, and this member to rock on a shaft R<5>. When the rocking of the member R<4> is arrested, the swash-ring stops the machine. The member is normally prevented from rocking by a toggle R<6>, O straightened to form a strut by a spring O<3>. When the shaft N' is rocked by the treadle, an arm N<6> on it moves a rod N<5> to bend the toggle R<6>, O to allow the machine to start. A stop L is adjustably secured by a screw L<1> to a sliding rod M, and when the travelling work contacts with the stop and moves the rod M, this rocks a bent lever N, N<3> to depress a rod N<4> and the rod N<5> against the action of a spring N<9> and so disengages the rod N<5> from the toggle-member O; the spring O<3> then straightens the toggle and stops the machine. When the treadle is released, the rod N<5> is restored ready to operate the toggle R<6>, O. According to a modification, the cutters B, B', Fig. 6, are are-shaped, and their slides are carried by an arm T pivoted at U<1> to a lever U which is pivoted at U<2> to the frame of the machine. The arm T is rocked on its pivot U<1>, to cause the cutters to slash the work, by toggles V, V<1> operated by a connecting-rod V<5> and a crank on the driving-shaft, and the lever U is rocked to cause the cutters to feed the work, by toggles U<4>, U<5>, W, W<1>, a connecting-rod W<4>, and a crank on the driving-shaft.