Patent GB-426401-A (GB)
Title: Improvements in or relating to the heeling of shoes
IPC: A43D79/00
Filed: 1933-10-03
Abstract: 426,401. Boot-making machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., WOODCOCK, R. B., and BARTON, F., Belgrave Road, Leicester. Oct. 3, 1933, No. 27124. [Class 17 (i)] A heel attaching machine comprises means for locating a shoe and heel in accurate position by engagement with their rear and side surfaces, so connected to the usual clamping treadle that depression thereof will first bring shoe and heel gauging means into operative position, further depression will clamp the work by the usual tread and rear abutments, and still further depression will return the gauging means and start the machine, to drive the attaching fasteners. To an adjustable bracket 907 are pivoted two pairs of bell-crank levers 909, 913, the upper ends of which carry a swinging frame member 911. The lower ends of the levers are linked together so that the whole comprises a parallel motion linkage. A member 919, forked at its forward end to form a counter gauge, has limited movement on the member 911, being slotted to engage pins 917 on the lower member. The member 919 carries a slide, adjustable forwardly and rearwardly by a screw 926, and forked at its forward end to form a heel gauge 925. The member 919 also carries a pair of side gauges 927 for the shoe, pivoted at 929 and urged away from each other by a spring 937, and a pair of side gauges 939 for the heel, pivoted at 940 and geared together at their rear ends. The arms of the gauges 927 carry spring plungers 945 engaging the heel gauges and are slotted to engage pins 931 upstanding from the member 911. As applied to the machine described in Specification 348,071, the hand-lever for starting the machine is dispensed with, and the clutch is connected to the treadle for lowering the tread and rear abutments. A rod 949 pivoted to this treadle terminates in a yoke 951 carrying on pivots 955 the bifurcated arms 957 of a bell-crank lever having a rear arm 986 and a forward arm 975 urged upwardly by a spring 981. This lever is guided by a stud 959 slidable in vertical slots 971 in a fixed bracket. The stud 959 pivotally carries the lower end of a rod 961 adjustably connected to a lever 963 connected by a link 965 to one of the levers 909. A stop 987 cooperates with the arm 986. In operation, work having been positioned on the jack, the treadle is partially depressed. The gauge 919 is thus swung to press the counter of the shoe against the last and be stopped thereby. The member 911, however, continues to advance and the pins 931 thereon close the arms 927 on the sides of the shoe and the arms 939 on the sides of the heel if this has been positioned with the shoe and pressed rearwardly by the operator against the gauge. If the heel was not positioned with the shoe, it is now pushed rearwardly between the gauges by the operator. Further depression of the treadle brings down the tread abutment P and rear abutment A as described in the prior Specification, to clamp the work. On still further depression, the arm 986 is engaged by the stop 987 and the bell-crank lever 957 swung so that the spring 981 crosses the pivot 955 and returns the stud 959 to the top of its slots, thus raising the rod 961 and causing the gauges to return to starting position. Continued depression of the treadle starts the machine, and the heel attaching nails are driven. Release of the treadle actuates the fastener supply, as described in the prior Specification. Specification 412,599 also is referred to in the Provisional Specification.