Patent GB-190916347-A (GB)
Title: Improvements in or relating to Lasting Machines.
Inventor: PLANT THOMAS GUSTAVE
IPC: A43D21/12
Filed: 1909-07-13
Granted: 1910-10-13
Abstract: 16,347. Plant, T. G. July 13. Lasting. - Auxiliary wiping - devices are provided in a lasting-machine for engaging the same surface of the upper as the wipers and in advance them, together with additional devices co-operating with the opposite side of the upper. The invention is described as applied to a machine e having a last support and end wipers mounted on carriers slidable on the bed of the machine. In this machine, the shoe is jacked on a pin 17, Fig. 5, the lower end of which is supported by a friction roller on a wedge 18, which is movable longitudinally of the bed by means of spur and ratchet gearing connected to an external hand-wheel. To facilitate the angular adjustment of the wipers about the longitudinal axis of the machine, curved flanged supports 38, 39 on the wiper support 40 engage respectively with similarly curved bedding pieces 36, 37 mounted on the toe or heel lasting carriage. The saddle 35 carrying the wiper mechanism is pivoted about an horizontal axis 34, which connects two parallel upstanding lugs 33 on the carriage. To adjust the saddle angularly about the axis 34, a projection 47, on a flanged member 46 that maintains the curved support 39 in contact with its bed 37, has screwed engagement with a vertical spindle 48 which can be rotated by a hand-wheel 10. The auxiliary heel wiping devices comprise pairs of grippers 72, Figs. 5 and 14, mounted on arms 78 pivoted at 80, and also additional grippers 73 for the purpose of increasing the wiping eftect at the side of the heel and back of the heel respectively. The grippers 73 are carried on arms 82 and are given their closing- in movement by rollers 84 on the arms taking into guiding-slots 85. The retractive movement is effected by a spring 86. The operative parts of both sets of auxiliary grippers 72, 73 are serrated, and the grippers may be adjusted on their carrying arms by means of packing-shims and by the provision of additional holes to take the securing- screws. The shoe being jacked, the auxiliary wipers are depressed on to the work by letting down the supplemental pivoted head 74, Fig. 5, on which they are mounted. A hand-lever 94 then advances a cap plate 90 under inclined guides on the work support, thereby depressing the teeth of the grippers into the leather to an extent limited by an adjustable foot 96. The guiding of the grippers is effected by horn-shaped projections 88 on the side wiper-locking mechanism and the sloping edges 89 of the end wiper plates, the closing-in movement of the main wipers causing also the closing-in of the auxiliary lasters. The auxiliary lasters for the toe comprise work-engaging members 162 mounted on arms 161, Fig. 20, on a head 158 pivoted to the wiper support as in the case of the heel lasters. The members 162, when in operation, rest partly on the out-turned surface of the material on the top of the wipers, and partly on the out-turned material at the edge of the wipers, and are preferably roughened on their under surface. When the wipers are closed in to wipe the leather over the insole, the auxiliary members 162 tend to follow them, but are, for normal friction, held away by springs. A sliding cap is used, as with the auxiliary heel lasters, to hold the toe lasters 162 down on the stock. A pad 181 is provided for the toe, and a similar one for the heel, to wipe up the leather about the last and retain it until the wiper plates have performed their function. In each case, the pad is provided with clips or brackets to permit its easy removal and the substitution of another. The pads are adjustably clasped about the last before the lasting operation, and their position may be shifted to compensate for the roll and swing of the last.