Patent GB-190721793-A (GB)
Title: Improvements in Machines for Marking or Notching Welts or other Parts of Boots and Shoes to Facilitate Bottoming.
Inventor: JUSTICE PHILIP MIDDLETON
Filed: 1907-10-02
Granted: 1908-10-01
Abstract: 21,793. Justice, P. M., [Manufacturers' Machine Co.]. Oct. 2. Welts and welting; uppers; presses; punching.- The adjustment of the sole leather and the upper of a boot when they are initially assembled during manufacture is facilitated by making on the upper a mark to which the sole leather may be referred. A machine to be used for notching the welt of a welted upper is constructed and operated as follows :- A removable marking bed is supported in the bifurcation 8 of a slide plate 9, which is moved horizontally by an eccentric 10 pivoted to the machine frame at 12. An arm 13, attached to the eccentric 10, has at its outer end a pointer which moves over a graduated scale 14, so that the distance between the line of stroke of the marking-tool 3 and the edge gauge 11 can be adjusted as desired. To hold the arm in position, a block 17 sliding on the arm 13 carries a movable plug 16, which engages in holes 15 in the table of the machine. The marking-tool 3 is carried at the lower end of a plunger 28, the upper end of which is threaded to receive an adjusting-screw 29 revolubly connected to a pin 30 integral with the brackets 31 supplying brackets for a shaft 32. The plunger is depressed by an oscillating lever 34 engaging with a piece 33 pivoted to the shaft 32, and is drawn upwards by a spring 36. The piece 33 is normally held out of engagement by a spring 35, but is moved into engagement as required by means of a bell-crank lever 40, which is rocked on its pivot through the agency of a gauge, which is employed to assist the operator in placing the shoe and holding it in an horizontal position. The gauge is carried at the lower end of a rod 44, which, when pressed upwards against a spring 46, rocks a lever 54 to which is pivoted a vertical latch 56. The upper end of the latch engages an arm 58 of the bell-crank lever 40, so that, when the gauge is pressed upwards, the piece 33 is caused to move into the path of the oscillating lever 34 and the plunger is depressed. In order that only one mark shall be made on the work, the piece 33 is disengaged from the lever 34 at the end of the downstroke. To accomplish this, a releasing finger 60, the end of which partly encircles the latch 56, is rigidly secured to the stud 32. As the plunger moves downwards, it strikes the cam-surface 62, Fig. 7, and rocks the latch 55, causing it to release the arm 58 of the bell-crank lever 40, thus allowing the spring 35 to draw the piece 33 out of engagement with the lever 34. The lever 34 is pivoted at its middle to the machine frame, and is oscillated by a connecting - rod and an eccentric attached to a driving-shaft. It is convenient to use a cutter which makes a rectangular notch in the welt or the like, aud a brushing-device is employed to remove chips from the marking - bed. Each brush 82 is mounted on a lever 84, which is pivoted at 86 to the machine frame and is connected by a link 88 to a second pivoted lever 90. A toe 94 on the lever 90 is engaged by the bifurcated end of an arm 96, which is pivoted to the frame and has integral with it a sector gear meshing with a rack 99 rigidly secured to the stud 32. As shown in Fig. 7, two plungers are provided, and the descent of one of them causes the brush to move over the table of the other. The plungers are arranged to mark different parts of the welt, for example, the toe part and the sides, and the marking-tables and accompanying gauges are so positioned that when work is presented to one cutter it will not cause the other cutter to operate.