Patent GB-190625730-A (GB)
Title: Improvements in or relating to Insoles and Methods and Machines for Producing the same.
Inventor: BOULT ALFRED JULIUS
Filed: 1906-11-14
Granted: 1907-11-14
Abstract: 25.730. Boult, A. J., [United Shoe Machinery Co.]. Nov, 14. Insoles; channelling; cementing. - Relates to insoles, and especially to composition insoles for welted boots and shoes, and consists in forming a "stitch-receiving" lip round the shank and fore parts of an insole by slitting the edge of the insole along the line 2<a>, Fig. 3, by means of an inclined knife 11, Fig. 16, and by channelling the insole along the line 5<a>, Fig. 3, by means of a knife 1 with a plough 2 for turning up the edge 5<a>. The edges 5<a>, 3<a> are then pressed by means of a reciprocating hammer 78, which works against the side of the knife 11, and the two edges, which are preferably previously coated with a cement, are thus united. A strenghening-cover 7<a> of heavy cotton duck or canvas &c. is preferably applied by cement to the insole, and it may extend to the inner side of the lip, as shown in Fig. 5; or, it may be secured to the outer face of the tip, or to both faces of the lip. The insole is produced.by the machine shown in Figs. 6 and 8. The knives 1, 11 are carried by blocks 3, 12, respectively, which are mounted in a yieldingly-supported carrier 9. The knife 1 is fixed in an inclined position by means of a clamping-plate 4 and screw 5, Fig. 8, a screw 6 serving to adjust the knife longitudinally in the block 3; in order to adjust the distance between the two knives, the block 3 has a tongue which can move in a groove 8 in the carrier and is normally fixed by a screw 10. The knife 11 can be adjusted also longitudinally along its block 12, in order to vary the thickness of the feather and to allow for wear of the knife. The depth of the cuts made by the knives is regulated by a presserfoot, which is vertically adjustable in a block on the carrier 9, the block itself being adjustable so as to regulate the distance between the presser-foot and knives. The work is fed by means of a reciprocating device 45 provided with two rows of teeth 46, which are adapted to act on the insole in such a manner as not to weaken the material between the cuts. The device 45 is mounted in a rod 48, to which horizontal reciprocating motions are imparted by an embracing-sleeve 49 actuated by a crank-pin 50, and to which vertical motions are imparted by an arm 55 fixed to a rock-shaft 54 actuated by a cam 52 and lever 53, the arm 55 being jointed to a sleeve 57 which acts on an adjustable-nut 58 in order to raise the device 45 from the work. The device 45 is returned to the work by a spring 60, the tension of which can be regulated by nuts 62, which act on a sleeve 59 splined to a guiding-sleeve 64 connected by a yoke to the sleeve 49. The work-support 35 is slightly convex, and its stem is carried by a vertical slide 37, which is normally kept fixed vertically by a bell-crank lever 39, 40 journaled to it. The lever 39 is pivoted to a link 41 on a bracket 38 which guides the slides 37, and a spring 42 controls the link 41 and lever 39, which form a toggle, and maintains the slide fixed until the lever 40 is moved by hand or a treadle. The lever 39 then moves so as to lower the work-support, and permits the insertion of the work. The worksupport is rotated intermittently, in order to assist the feed, by means of a split clutch ring 67, Fig. 10, which embraces the stem 36. The ring is reciprocated by a cam-actuated lever 69 provided with a lug 70 and controlled by a spring 71, which engages a lug 68 on the ring. On the forward movement of the lever 69, the ring is caused to engage the stem 36 and tightly and to rotate it, but on the return movement the engagement is slackened, and the ring slides over the shaft without rotating it. This means of rotating the work-support may be dispensed with, and means for vibrating the knives in the line of feed may be employed instead. The carrier 9 is supported yieldingly, being provided with a guided shank 25, Fig. 6, provided with a lug 27. The shank 25 can move vertically against the action of a spring 31 on a rod 29 provided with adjusting-nuts 32, 28, the latter of which engage the lug 27 in its raised position. The downward motion of the carrier is limited by a fixed lug on the rod 29. The hammer 78, Figs. 6 and 16, is connected to a lever 80 pivoted to an extension on the knife-carrier, so that the hammer rises and falls with the knives. The hammer is oscillated substantially parallel to the upper surface of the insole by means of a cam-reciprocating lever 82, which is connected to the lever 80 by an adjustable spring. To facilitate operating on insoles with sharp curves, the knives and hammer are arranged close together. The width of the feather on the insole is determined by an edge gauge 91, Fig. 8, carried by a rack 92, which can be moved by means of a segmental gear 93 fixed to a rock-shaft 94 mounted in a bracket 95 on the slide 37. The bracket 95 is fixed by means of set-screw 98 and an adjusting-screw 108, so that the initial position of the gauge 91 may be adjusted. The gauge is also fitted with three adjustable stops, to allow it to be set to the widths of the feather at the shank, and the inside and outside of the foreparts. For this purpose, the shaft 94 has a slotted arm 99 engaged by a block 100, Fig. 15, pivoted to a disk 101 on a shaft 102 journaled in a sleeve 103 adjustably mounted on a projection 97 from the slide 37. The shaft 102 is rotated by a handle 106, and the first position of the gauge is determined by a pin 107 on the disk 101 which engages a rece-s in the bracket 104. On rotating the handle 106, the gauge is stopped in its intermediate position by a latch 109 on the lever, which engages a recess in a sleeve 103 adjustably fixed by a clamppin 1 and 2 and a lock-nut 113. The final position is determined by the engagement of a lug 116, on a collar 115 on the disk 101, with a fixed stop. The construction of the apparatus may be varied by using a yielding work-support and unyielding feedslide, and in other ways.