Patent GB-190619262-A (GB)
Title: Improvements in Machines for Levelling or Beating Out the Outsoles of Boots and Shoes.
Inventor: JUSTICE PHILIP MIDDLETON
Filed: 1906-08-28
Granted: 1907-11-28
Abstract: 19,262. Justice, P. M., [Manufac urers' Machine Co.]. Aug. 28. Soles. - In automatic or "roll" levellers, one or more laterally-movable and preferably swinging devices are provided for levelling the shank of the shoe, the ordinary pressure roll being used. only for the forepart of the shoe ; the devices are arranged to enter and leave the shank from the side of the shoe. The invention also includes a special forepart roll. The jack is of ordinary form, and its base c<1>, Figs. 1 and 4, is supported on an oblique table c at the upper end of the middle member b<12> of three substantially parallel members b<11>, b<12>, which extend upwards from the jack-actuating lever b<9>. This lever is loosely mounted on a shaft b<10>, and is actuated through an adjustable series of levers b<8>, b<7>, b<5>, Fig. 1, from a cam-path in a toothed wheel b<3>, which is driven from a pinion a<3> on the main shaft a. This pinion is surrounded by a band brake, which is released to allow the pinion to be clutched to the shaft on depression of a treadle a<23>. The lever b<9>, Fig. 4, is provided with an arm to which is fulcrumed a segmental gear c<7> coupled up by a rack and pinion c<5>, c<6> with the base of the jack. An arm c<9>, depending from the gear c<7>, carries a roller which runs in a cam-slot c" supported by the machine frame, the arrangement being such that just before the jack reaches the limit of its out ward oscillation, it is projected upward and for. ward above the levelling-devices into a con. venient position for removing the shoe and jacking a new one. The return movement of the jack causes the new shoe to be moved into operative position. The two outer members b<11> above referred to are provided with bearings for an inclined shaft d, to which is pinned a head d' having ears d<3>, between which are detachably pivoted one or more, but preferably two, bellcrank shank levellers d<4>. The upper arms of these tools are adapted to sweep over the shank of the shoe, preferably from the heel towards the toe, while their lower ends are drawn together by a spring d<5> and are provided with rollers d<7> which run on a cam d<6>. This cam allows the tools to remain in full contact with the shank during the whole of their travel, and to be raised only on leaving and re-approaching the shank. The cam may also be arranged to vary the pressure of the tools on the shank. A spring d<8> is provided to prevent any possible damage to the work should the springs d<5> become overloaded. The shaft d is rotated by worm gearing e, e<1> and bevel-gearing e<4> from the jack shaft b<10>, which is driven by chain-and-sprocket gearing e<6>, e<7>, e<8>, Fig. 1, from the same mechanism that oscillates the jack. In addition to the progressive movements thus given to the levellers, the worm shaft e<2> is reciprocated to impirt short and quick vibrating movements to the levellers. This is effected through a rod e<9> from an eccentric f<2>, which actuates the forepart roll. A shanklevelling device is mounted on either side of each jack, the two being, preferably, coupled together by gearing g. To correct for the difference in length from the forepart to the inner and outer sides of the sole, the inner shaft d of each pair of shank-levelling devices is made adjustable. In the operation of the machine, these levelling-devices may be worked simultaneously, in order to ensure a firm holding for the shoe and so to prevent it from buckling. The strap of the eccentric f<2> has a forwardlyinclined arm f<3> carrying a yoke f<4>, between which is journaled the forepart roll f<5>. The arm f<3> is supported by two curved arms f<7> at the upper end of a spring-encircled rod f<9>, the tension of the spring being adjusted by a handwheel f<11>. In addition to the rapid reciprocation of the roll by its eccentric, it is rotated by segmental gearing f<13>, f<14>, which is coupled up by links f<16>, f<17> with the jack-actuating mechanism so as to move in timed relation with the jack. An ordinary roll may be used ; or a speciallyshaped roll, which is moulded in its contour so that at any part of its travel its curvature corresponds with the transverse curvature of the sole, may be employed. Further, the rotating-mechanism is preferably arranged so that the roll makes one complete revolution in its traverse from the tip of the toe to the beginning of the shank of the shoe. Rolls of other size, however, may be used. To render the machine completely automatic, a locking-lever h<2> is provided to release the treadle a<23> directly the jack has been projected into its elevated position for the removal of the shoe. This unclutches the driving-shaft, and stops all but the vibratory movements of the levelling-roll.