Patent GB-190717689-A (GB)
Title: Improvements in or relating to Machines for Lasting Boots and Shoes.
Inventor: WARD ARTHUR
Filed: 1907-08-02
Granted: 1908-10-02
Abstract: 17,689. Ward, A., Hopper, G. W., and Sugden, A. Aug. 2. Lasting.-Machines in which the upper at the toe and heel is lasted by wiper plates are arranged so that the toe rest and the heel post are independently mounted and capable of independent adjustment vertically and horizontally. The wiper plates are arranged on heel and toe heads supported on separate columns rising from a bed-plate. The heel head is adjustable vertically by a hand-wheel, and heel and toe heads may be adjusted longitudinally on their columns. Beneath each pair of wiper plates are independently-operated bands adapted to be pressed about the upper on the last. The bed A carries the head column A<1> and the heel head column A'. A slide F<3> is mounted in adjustable guides in the latter, and may be adjusted vertically by a hand - wheel F' through suitable gearing. Stays a<1> unite the columns. The bed-plate and stays are shaped to allow the operator to get close to the work. The heel post is pivoted to the bed A, and the toe rest is carried in a longitudinally adjustable slide D<18> controlled by the hand-wheel D<19>. To adjust the heel rest longitudinally, a screw C<5> works in a bracket C<6> against a spring c<7>. The last is placed on a ball-ended pin c<8> in a socket at the top of a heel post C<1>, which may be adjusted vertically to fix its lowest position by a flange on a screwed sleeve C<2>. An adjustable clamp C<9> is carried by the heel post. The heel head may be raised by a treadle linked to the lower end of the sleeve C<2> through a universal joint, a spring encircling this sleeve tending to restore the parts. The toe rest E is a resilient pad covered with a leather strap, and is pivoted to a carrier E<2>, springs e<3> tending to maintain it horizontal. The carrier E<2> rests on a spring e' interposed between it and a screwed sleeve e having a flange which acts as an adjustable stop for the toe rest. The rod e<1> on which this sleeve is screwed has a square head which engages a square hole in the carrier E<2>, preventing the toe rest from rotating but allowing vertical movement. To raise the toe rest, a chain e<6> passing over a pulley e<9> is connected at one end to a treadle and at the other to a plug in a sleeve c<5> connected to the screw e<1>, a spring e<8> tending to restore the parts. The toe-rest mechanism is supported in a sleeve e' fixed in the slide D<18>. The toerest and heel-rest treadles have locking - means consisting of a pawl and rack, the pawl having an arm which may be actuated to free the pawl by the tilting of a pedal plate pivoted to the treadle. While this plate is tilted, the pressure of the toe rest on the heel post is directly determined by the pressure of the operator's foot, and the rests may be locked in any position by shifting the centre of foot pressure. The wiper - plate operating - mechanism on the toe and heel heads is of similar construction. The wipers D<11> are held by dowel pins in carriers d<14>. Links D<12>, D<13> are connected to the carriers d<14>, the links D<13> being fixed at their opposite ends to pins in the base of the wiper box D<6>, and the links D<12> being pivotally connected to a slipper d<11> oscillating in a slide d<10> in the wiper box. To assist in guiding the wiper carriers d<14> in their movement, pins d<15> in the wiper box engage slots d<16> in the wiper carriers d<14>. A plate d<20> prevents the wiper plates from rising from the carriers d<14> and a section of the wiper-box cover is hinged to facilitate changing the wiper plates. A hinged bolt and lever nut hold the cover closed. The wipers are operated by a hand-lever D<8> pivoted to the wiper box, a pin in the slipper d'‹ engaging a slot therein. They may be locked in any position by a pawl and rack d<13>, Beneath each wiper box, a yoke g<5> is adapted to reciprocate. The yoke has a screwed shank and carries linked bell-crank levers which support a leather band G to clamp the upper about the last. A lever g pivoted to the wiper box operates through bevel and screw gearing to reciprocate the yoke g<5>, The rear part of the cover of the toe-wiper box has projections d<17>, and is adapted to carry a somewhat usual form of retarder. The toe-wiper box is journaled in projections d<5> on an oscillating plate D<5>, and its weight is balanced by a spring. From the rear of the plate D<5> rises a rack D<7>, which, with double pawls d<7> on a rod d<6> bolted to the wiper box, permits of the vertical angular adjustment and locking of the latter. To provide for lateral angular adjustment and locking of the wipers, the plate D<5> slides between segments D<3>, D<4> on a slide D, the latter segment having a rack with which pawls d' on the plate D<5> engage. The heel-wiper box is pivoted horizontally by a pin f 4 and a segment F<5> in a saddle f<2>, a friction clamp F<6> on the latter providing for transverse rocking and locking of the wiper mechanism. The saddle f is mounted for vertical and horizontal angular adjustment and locking in the same manner as the toewiper box. The slides D on which the toe and heel heads are mounted are arranged for adjustment longitudinally by means of levers D<2>, which, when moved, engage the inner inclined ends of weighted locking-pawls d, so freeing the pawl in advance from the respective racks formed in the members D<1>, F<3>. The levers D' are pivoted on brackets d<2> fixed to the members D<1>, F<3>. In operation, the last with the upper is placed on the heel rest pin,c<8>, the toe portion resting on the toe-rest E, and the heel and toe heads are adjusted to the angles of the bottom of the last. The heel post is adjusted by its pedal or the flange C<2> till the heel seat of the last is level with the heel wipers. The heel band G is brought up to the last by means of the lever D' and the heelband operating-lever. The last is then carried forward till its toe portion is in contact with the centre of the toe wipers but well above them. The tacks at the toe of the upper are then removed, and the upper laid over the toe wipers and gripped in this position by the toe ring H of the retarder. The last is forced beneath the wiper plates by the presser H<1>, the pressure of the toe rest E being governed by the toe-rest pedal in the manner already described. After sufficient depression, the toe wipers are swept in over the toe. The toe and heel band may be used to hold the upper at any time ; they permit the inspection of the upper and the use of hand pincers. The toe band acts as a stop during the lasting of the heel seat, which is performed by the heel wipers in conjunction with the heel band. The position of the heel band may be adjusted at any time during the lasting of the toe, to vary the effect of the toe wipers on the upper. The toe rest slide D<18> may be operated by bevel - gearing in place of the screw mechanism shown.