GB168399A - Improvements in or relating to sewing or other machines applicable for use in connection with the manufacture of boots or shoes - Google Patents

Abstract

168,399. Richs, F., Burgoyne, E. G. E., and British United Shoe Machinery Co., Ltd. May 31, 1920. Boot - sole sewing-machines; welted and turnshoe; starting and stopping gear.-Relates to welt-end cutting and holding devices operative after the stopping of the machine, as described in Specification 19679/11 and consists in the addition of a separate manually - controlled device for the prevention of the welt-end cutting operation. In the Specification referred to, the cutting operation is prevented during running by a rod 111 coupled to the stopping-gear. When the machine is stopped, this rod is raised and the separator, by pulling on the welt, lifts the pawl 80 and sets the cutting mechanism free to operate. According to the present invention, the rod 111 is coupled to a separate lever 52b which is operated from a separate treadle and is held locked, until the machine is stopped, by a latch 52f. The weltholding'devices are also modified. The lower jaw 55a is formed with two gripping-surfaces 55<b>, 55c at a slight angle one to the other so that welts of differing thicknesses are squarely gripped without adjustment of the jaws. The rear portion 55<e> is weighted so that when it passes on to the end of a cam-surface 83a, the jaw closes lightly on to the welt before the completion of the forward movement of the jaws. The front and rear portions 55a, 55<e> are mounted separately upon the pivot 55<d> and there is a slight freedom of movement between them. They are coupled together by a spiral torsion spring whereby welts of unequal thicknesses are substantially equally compressed between the jaws. The Provisional Specification refers to Specification 20731/12.