Patent GB-190625731-A (GB)
Title: Improvements in or relating to Machines for Reinforcing Insoles.
Inventor: BOULT ALFRED JULIUS
Filed: 1906-11-14
Granted: 1907-11-14
Abstract: 25,731. Boult, A. J., [United Shoe Machinery Co.]. Nov. 14. Cutting - machines for leather. - Relates to a machine for applying a canvas &c. covering to insoles, especially those of the type in which a lip is formed by securing together two flaps cut from the insole. The insole is spread with cement, a sheet of canvas roughly cut to shape is applied by hand, and the insole is then inserted in the machine shown in Figs. 2 and 3, which presses the canvas against the inner edge of the lip, and trims off the top of the lip and canvas in order to form a lip of uniform thickness. The insole is supported on a revoluble support 1 in a bracket 2, and the outer edge of the lip is guided by a roll 28, Figs. 2, 3, and 8, and a fixed guide 29, while the work is fed along by a presser 6, which also moves the canvas against the inner edge of the lip, and so causes it to adhere to the lip. The presser 6 is provided with a feed-point 6<a>, and it is adjustably connected to an arm 7, which is reciprocated vertically in order to raise the presser from the work, and is reciprocated to and from the lip in order to press the canvas against the lip, and in a direction at right-angles to this in order to effect the feed. These movements are obtained from cams 13, 14, 15 on the driving-shaft, the first of which depresses a slide 9 against the action of an adjustable spring 17. The arm 7 is pivoted in the slide 9, which moves in guides in an arm 10 on an horizontal rockshaft 11. The cam 14 acts on a roll 22 on the arm 10 and oscillates it against the action of a spring 23, in the direction of the feed to an extent regulated by a stop screw 26, which engages a lug 25 on the arm 10. The cam 15 moves a guiderod 20, which presses on the arm 7 and moves it away from the lip, and the arm 7 returns under the action of an adjustable spring 20<a> in order that the presser may give a yielding blow to the lip and canvas cover. The top edges of the lip and canvas are trimmed off evenly by a knife 30, which is continuously rotated by a pulley 33 and a band, and the shaft of the knife 30 is pressed down by a spring 34 on to the top of the roll 28, which coacts with the knife 30 to give a shearing action. The knife 30 is mounted in a carrier 32, which is pivotally mounted on a stem 38 screwing into a lug 39 on the frame, in order that the knife may be quickly removed from the working position when the knife is to be sharpened. The end of the carrier 32 is split and receives a clamping- screw 37 by means of which it is clamped to a screwed sleeve 35, which can be adjusted in the carrier by turning a perforated flange 36. This adjustment permits the tension of the spring 34 to be varied when the carrier is fixed in position by turning the stem 38, a lug on the stem then forcing the flange 36 into frictional engagement with the lug 39. A screw stop 32<x> in the carrier may be provided for determining the working position of the carrier. In order to prevent the knive from becoming clogged with cement, an extension 40 of the carrier is provided with an inclined socket, in which is arranged a felt wick 41 saturated with oil and bearing against the upper surface of the knife. A similar inclined socket in the extension 40 allows a stick 42 of abrasive material to be inserted in order to sharpen the knife during the working of the machine. The work-support 1 can be adjusted in position by means of a clamp nut 5, and a non- yielding work-support may be used, but it is preferably adjustable.