Patent GB-190607170-A (GB)
Title: Improvements in Machines for Lasting Boots and Shoes.
Inventor: DENNE MARK THOMAS
Filed: 1906-03-24
Granted: 1907-01-10
Abstract: 7170. Denne, M. T. March 24. Lasting.-Relates to that class of machine in which wiper plates are used at the toe and heel. The heel-wiper carriage a, the toe-wiper carriage b, the toe-rest carriage e, and a carriage h carrying a holding-down device, are all mounted to slide on. a bed c. The toe-rest e<2> is carried by a verticallyadjustable and spring-controlled rod e<1> in the carriage e, while the jack consists of a similar rod d mounted in the carriage a. The latter is in the form of a headstock, and can be moved along the bed c by. rack-and-pinion gearing a<3>, a<4>, and locked in its adjusted position by a pawl and ratchet - device a<5>, a<6>, governed by a treadle a<7>. - The carriage carries supplemental carriages f, f<4>, in which a heel-clamping band f<1> and the heel-wipers g are respectively mounted. The clamp f<1> is pivoted to arms f which -gear together, and it is moved into contact with the boot by rack-andpinion gearing f<5>, f<6>, and held there by clutch mechanism. The latter is automatically disengaged when the carriage a is retracted. The wipers g, Figs. 1 and 10, are carried by blocks g‹; which gear with intermeshing pinions g<4>, the latter being also in gear with racks g<5> on a plate f<3>, which carries the carriage f<4>. One of the pinions is provided with a hand-lever g<6>, which, when moved, advances the wipers relatively to the plate f<3> and at the same time moves them towards one another. The carriage f<4> can be oscillated slightly, to adjust the wipers to the work, by means of a handwheel j, or from a treadle. The toe-wipers ! l are constructed. similarly to the wipers 9, and are carried in a carriage l<1>, which can. be raised against the action of a spring by depression of a treadle b<3>, while it can be tilted longitudinally by, means of a hand wheel l<6>, and oscillated transversely by a worm and wheel l<8>, to present the wipers correctly to the work. The holding-down device consists of a roller h<4> carried by an arm h', which is made in two parts so that the roller can be swung out of the way when not required. The roller is forced down tightly on to the work by depression of a treadle m, and is oscillated longitudinally of the last by segmental gearing h<2>, h<3> actuated by a hand-wheel h<6>. The treadles m, b<3> are provided with pawl and ratchet devices for locking them when depressed. The rod d carrying the jack pin is locked in position during the wiping-action by a pivoted plate t, which is released when the carriage a is run backwards. In operation, the boot is placed in the machine, and the various rests and clamps properly adjusted. The toe-wipers are then actuated to wipe the leather around the toe of the boot, after which a bracing-tape is drawn round the toe. The ends of the tape are held in a clamp o, q, Fig. 16, carried by the upper end of the rod h', which, when oscillated, draws the tape tight. The ends of the tape are then backed to the last, after which the heel-wipers are moved to wipe the leather over the heel seat. Instead of the clamp shown in Fig. 16, the tape may be secured by a pivoted serrated block y, Fig. 18, which coacts with the wall of the clamp.