Improvements in or relating to boot or shoe sole sewing machines
163,967. Gouldbourn, J., Ricks, F., and British United Shoe Machinery Co., Ltd. Feb. 16, 1920. Chain-stitching machines; needles, dividing; rotary horns; presser bars with periodic control; feed by presser and the like; driving; starting and stopping gear.-The main driving shaft extends from front to rear of the machine and is provided with a hand-wheel 184. The stroke of the needlebar is determined by the position of the horn, which rises and falls as the thickness of the work varies, by means of mechanism 13, 15, 21, 23, 35 as described in Specification 10147/11. The presser and feed foot mechanism used is described in Specification 106,454. The speed of the machine is varied, as described in Specification 16186/10, by means of an epicyclic train including pinions 227 carried by a brake drum 213, the shoe of which is controlled from a cam 199 fast on the supporting shaft of the horn. The starting and stopping-gear includes a friction clutch 211 actuated from an inclined gimbal device and controlled from a treadle as described in Specification 720C/07, [Class 80, Mechanism &c.]. In moving the treadle to start the machine, a treadle rod 239 rises and throws in the clutch, the epicyclic gearing imparting the lowest speed to the machine. Further upward movement of the rod 239 raises a lever 231 and, by removing the brake from the drum 213, causes the speed to increase. Thereafter the speed is controlled by the cam 199.