Patent GB-191011841-A (GB)
Title: Improvements in or relating to Laying and Leveling Machines for Acting on the Soles of Boots and Shoes.
Inventor: PLANT THOMAS GUSTAVE
IPC: A43D35/00
Filed: 1910-05-12
Granted: 1911-07-10
Abstract: 11,841. Plant, T. G. May 12. Sole laying, levelling, &c.-Sole laying and levelling machines of the type described in Specifications 27,350/09 and 11,480/10, are provided with improved jacks and jack-actuating mechanism. The line of support of the jack is varied by a cam-plate 26, Fig. 2, which is laterally vibrated through connexions 29, 34, 37, 40, and a slotted link 42 by a cam 45, as described in Specification 11,480/10. In the present machine, the path of vibration of the cam-plate can be varied without affecting the amplitude of the vibrations, for which purpose the rod 34 is adjustably connected with the link 30 through a screw-threaded engagement with a sleeve 32 pivoted to a lug 31 extending from the link. The amplitude of vibration of the plate is varied by varying the position of the end of the lever 40 in the link 42, through connexions 50, 52, 57, 59, 62, 63 and a cam gear 22, as is also described in Specification 11,480/10. The shape of this cam may be varied to suit the work on hand; but, as another means for effecting such variation, the levers 52, 57 are connected by a block 55. the position of which is adjustable by means of a screw 53. Another improvement consists in the provision of an adjustable connexion between the jack carrier 73 and its actuator 77. This consists of a twopart link 74 connected by a right and left hand screw 83 carrying a hand-wheel 82. The jack carrier comprises a cradle 85 hung on slides which are moved to vary the position of the line of support of the jack, as described in the Specifications above referred to. The jack proper 101, Fig. 5, is mounted in slideways in the cradle 85, and comprises a heel post, back gauge, toe support, instep support, and counter clamps. The heel support 104 is loosely pivoted at 103 to a post 102 rising from the base of the jack, and to an arm 107 projecting upward from a two-part spring-controlled actuating-link 108, Fig. 6. When this link is moved rearwardly, the support is turned with a yielding movement to jack the shoe. The link 108 is actuated by a pin-and-slot connexion with a shaft 114, Fig. 5, which pivotally carries a jacking-lever 115. This lever is connected through a spring to a crank arm 116 looselv mounted on the shaft 114 and connected by a link 128 to a crank 127 on a shaft 122. After the lever has been turned to jack the shoe, it is locked by the engagement of teeth 125 on a locking-lever 124 carried by an eccentric portion 123 of the shaft 122 with teeth 126 on the cradle 85; the eccentric 123 permits further backward movement of the shoe after the lever 124 has been locked, so as to seat the shoe firmly against the heel gauge 140, Fig. 3. This gauge is carried by a lever 138 pivoted at 134 on the cradle 85; adjustment is effected by a screw 137, which bears against an extension 136 of a lever 135 also mounted on the pivot 134. The toe rest 142, Figs. 3, 5, and 14, is adjustably secured to a carrier 143 carried by pins resting on spring-pressed plungers located in slots in a support 144, which is pivoted at 145 to the saddle 101; rack teeth 149, 150 lock the rest in the position into which it is moved by the shoe as the shoe is jacked. Relative movement of the toe rest and heel gauge for size adjustment is effected as described in Specification 27,350/09. The instep support comprises a saddle 173, Fig. 14, secured by a set-screw to a shifting pin 172 supported in bearings 171 carried by plates 166, which are pivotally carried by the support 144; one of the plates is formed with locking-teeth 169 adapted to be engaged by a series of spring-pressed pawls 170. Different saddles are provided for rights and lefts; when mounted on the pin 172, they are held by a spring to one side or other according as to whether a right or a left shoe is being operated upon. The instep support is positioned with the toe-rest, but it is afterwards raised to seat it firmly against the shoe by manipulating a handlever 179, Fig. 3. The counter clamps 183, 184, Fig. 10, are carried by slides movable in guides in the heel gauge supporting-lever, and are arranged to be opened and closed automatically. These slides are engaged by a right and left hand screw 187 formed on a shaft which is operated by segment gearing 195, 198. The gear 198 is actuated in one direction, to open the clamps by connexions operated by a cam piece on the jack carrier, as this moves outwards for the removal of the shoe; a spring rotates the gear in the reverse direction to close the clamps on the inward movement of the jack. The gear 195 may be, disengaged from the segment gear 198, and the clamps may then be adjusted by a hand-wheel 194. Specification 14,497/11 is also referred to.