Patent GB-327677-A (GB)
Title: Improvements in or relating to machines for marking boot or shoe soles
IPC: A43D95/14
Filed: 1928-12-04
Abstract: 327,677. British United Shoe Machinery Co., Ltd., Elliott, H. E., and Brough, R. Dec. 4, 1928. Sole blanks, machines for.-Relates to machines for making location marks on a face of a sole, especially for indicating to an operator the points along the margin where a sole bevelling operation should begin and end, and comprises work gauges and opposed marking and presser means. A unitary adjustment sets the gauges for size of sole, supplementary adjustments being provided for alteration in style. An eccentric 3 on a shaft driven through a one-revolution clutch oscillates one end of a beam 5 pivoted at 6 and carrying at its free end pressing devices comprising pressers 7 each backed by a spring 13 abutting against a screwed sleeve 10 through which passes the stem 9 of the presser, adjusting and lock nuts being provided. A heel end gauge 29 is adjustable longitudinally of a slide 27 secured to a bracket 28 threaded to engage a screw 17 provided with a hand-wheel 18. A reduced part of the screw 17 engages a bracket 16 secured to a marking slide 15 carrying marking ridges 20 and work-centering arms 21 geared together and spring-pressed inwardly. Each arm carries a flat spring 25 at the end of which is a block 26 positioned above the ridge 20 to be engaged by the presser as this descends. For marking the fore end of the sole, a bar 34, pivoted centrally and formed with marking ridges 25, is connected by a link 37 with a plunger 38 backed by a spring and adjusted by a thumb nut 40, a handle 36 on the free end of the bar enabling this to be pushed over dead centre to snap into position for the reverse sole, when rights and lefts are dealt with alternately. Side gauges 42 are mounted on transverse rods 44, 45 formed with rack teeth gearing with a pinion 47 on a fixed pivot. These gauges are adjusted in unison by a head 49 on a. screwed rod 48 engaging a block 50 an extension of which engages an inclined groove 52 in a plate secured to the bracket 28, so that the side gauges are automatically adjusted to correspond with the size adjustment of the heel gauge. The screw threads on the rod 17 and the incline of the groove 52 are such that one revolution of the head 18 moves the heel end gauge one-sixth of an inch, the markers 20 one-eighth of an inch, and the side gauges one-twelfth of an inch. The bracket 28 carries a pointer 54 to indicate, the size to which the gauges are set. A guard 55 is provided to prevent the operator's fingers being placed beneath the plungers. One of the segments 23 carrying the centering arms 21 has an inclined face engaging an adjusting screw to limit the inward movement of the arms, so that a sole pushed between the arms can force them apart. The sole is inserted flesh side down with its inside edge touching the adjacent gauge 42. The preseers 7 may each be duplicated, to provide one for each side of the sole. The marking ridges may be higher at their outer ends than at their inner ends to make the indentation deeper at the edge of the sole, or the pressers may be concave for the same purpose. The presser heads may be self-adjusting to the sole surface.