Patent GB-805107-A (GB)
Title: Improvements in or relating to shoe upper conforming machines
IPC: A43D21/12
Filed: 1956-02-22
Abstract: 805,107. Shoe upper conforming machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., and CHOICE, F. C. Feb. 21, 1957 [Feb. 22, 1956], No. 5441/56. Class 17(1) A shoe upper conforming machine having means to support a shoe bottom upwards, auxiliary wipers 6 (not shown) overlying toe wipers, upper retarding means to press marginal portions of the upper against the wiping means and so control the upper during wiping, power operated means to move the wipers heightwise relatively to the shoe support, power operated means to cause the toe wipers to urge the upper margins inwardly, and a toe band to clamp the toe portion of the upper firmly against the last after heightwise wiping has been effected, has the following additional features: (1) Means to urge the auxiliary wipers inwardly independently of the toe wipers to press against the upper during heightwise wiping, and means to restrain the auxiliary wipers from being urged inwardly as the toe wipers wipe inwardly after having wiped upwardly, and (2) the toe band is moved heightwise with the toe wipers during upwiping but is clamped against further heightwise movement after it has clamped the upper. The machine is generally similar to that disclosed in Specification 781,303. The wiper movements are the same as those described in Specification 482,275 except that. the first disengagement of the clutch occurs after the wipers have completed the second overwiping. The auxiliary wipers are similar to those disclosed in Specification 519,775. The upper retarding means are similar to those described in Specification 628,426. The cam controlling the upwiping movements of the wipers is modified so that the wipers when in position to commence inwiping are slightly lower than those described in Specification 781,303, so that less upper material is likely to be dragged out from between the wipers and the retarding fingers. To prevent such dragging out of the upper due to the snapping in of the auxiliary wipers, racks 2 are secured to the bars 4 supporting wipers 6, Fig. 1 (not shown), and during upwiping the rack engages pawls 8 on plungers 10 movable heightwise in blocks 12 supported by linkages 14, 16, so that the wipers are prevented from further movement inwardly. The teeth of the rack are shaped so that the wipers 6 may be moved outwardly without hinderance from the pawls. The ends of the toe band are detachably secured to blocks 32 pivoted at 34 between the limbs 35 of a U-shaped member 36 pivoted at 38 on blocks 40 which are situated between the limbs 35 and may swivel on studs 42. Spring plungers 44 engage lugs 45 on blocks 44 and urge blocks 32 upwardly. The toe band partakes of the normal upward movement of the wipers, but when it is pulled to engage the shoe, extending portions of pins 34 enter fixed horizontal guideways, so that when the wipers move further upwardly heightwise movement of the toe band is prevented, blocks 40 moving upwardly against springs 44, and member 36 pivoting about 34. The side clamping members, not shown, have polished faces and do not displace the toe band. Specifications 470,749, 489,649, 514,309 and 567,845 also are referred to.