Patent GB-191423140-A (GB)
Title: Improvements in or relating to Mechanism for Controlling the Position, Movement or Operation of a Tool or like Member in relation to an Object to be Worked Upon.
IPC: A43D29/00
Filed: 1914-11-26
Granted: 1915-11-25
Abstract: 23,140. British United Shoe Machinery Co., [United Shoe Machinery Co.]. Nov. 26. Sewing-machines; feed by moving machines.-Relates to mechanism for controlling the position, movement, or operation of a tool or like operative member of a machine in relation to an object to be worked upon. A roller 46, Fig. 2, held in contact with a rotating drum 45 or other moving driving - surface, is connected to a controlling-finger, moving over a former, in such a manner that it may be swivelled to one side or the other from the neutral position, in which the axis of the roller and drum are parallel, and the endlong movement then imparted to it by the motion of the drum is used to move the part to be controlled. The invention is shown, in connexion with a machine for cutting boot soles, for so controlling the cutter-head while it travels about a former that it will be maintained in proper relation to its direction of travel, but it may be embodied in welting and turnshoe machines. The sheet of material to be cut is placed on the table 1, above which is supported the former 2. The cutter 5 is carried in a head 4 mounted for rotation in the free end of a compound arm 9, 16 and provided with a stem 11, and a feedwheel 6 which is constantly rotated on its horizontal axis from the shaft 39, by the chains 33, 30 and gearing carried by the head, to cause the cutter-head to travel over the work. At the upper end of the stem 11 are a fixed finger 14 and a pivoted spring-pressed finger 80, Fig. 4, lying side by side, the finger 80 being in advance of the fixed finger. These fingers travel along the edge of the former; while they are moving in a straight path, the faces of the two fingers lie in the same plane, and the roller 46 lies in the neutral position; when they come to a curved part of the former, the finger 80 moves inwards or outwards, as the case may be; and its movement is transmitted to a sleeve 82, and thence by levers 84, 85 to the lever 87, which carries a channel-bar 90; the horizontal arm of a lever 92 pivoted on the carriage 47 of the roller engages with the bar, while its vertical arm 93 is formed with a toothed segment gearing with a segment 79 free to turn in the stem 65 of the yoke in which the roller is journaled ; from the segment 79, motion is transmitted to an arm 76 fixed on the yoke stem. The carriage carries a rack 48 by which its endlong movement is transmitted to a wheel 53 on the shaft 17, upon which the compound arm is mounted, and this shaft is connected by bevel-gearing aud intermediate shafts to the stem 11 of the cutterhead, which is thus automatically turned in its bearings in accordance with the curvature of that part of the former along which the controlling-finger may be moving. When the cutterhead has completed its travel about the former, the roller may be restored automatically to its initial position on the drum. For this purpose, the frame 97 carrying the apparatus is given an upward movement, bringing the bell-crank lever 98 into contact with a fixed cam 99 and thereby effecting the disconnexion of the clutch 54 by which the wheel 53 is secured to the shaft 17, and also bringing the lever 87 against a fixed stop 102 and setting the roller so that it is caused to travel along the drum to its original position; this attained, the roller is turned into the neutral plane by the engagement of a projection 103 with a fixed pin 104. Specification 22,222/07, [Class 17, Boots &c.], is referred to.