Patent GB-626588-A (GB)
Title: Improvements in or relating to machines adapted for coating parts of platform shoes
IPC: A43D25/18
Filed: 1947-07-30
Abstract: <PICT:0626588/III/1> <PICT:0626588/III/2> A platform cover attached to a shoe upper and socklining is fed by combined feeding and supporting means past a cementing nozzle by which successive portions of the cover are coated with a band of cement.  Simultaneously, a band of cement may also be applied to the margin of the platform sole, each band spaced a little inwards from the edge of the sole to prevent the cover sticking to it before the lasting operation is performed on the cover.  Two machines are described, in the first of which, shown in Figs. 1, 2, a shoe mounted on a last 78 is presented by the operator with its platform sole 80 against a depending flexible articulated nozzle 10 constructed as described in Specification 518,779, and supported on the <PICT:0626588/III/3> <PICT:0626588/III/4> <PICT:0626588/III/5> <PICT:0626588/III/6> <PICT:0626588/III/7> <PICT:0626588/III/8> machine frame 14 by a stud 12.  The platform cover 74 is supported between a combined shoe-feed and cover-supporting roll 64 of yieldable material attached to a driven shaft 66, and a fluted coating-applying roll 50.  The shaft 66 passes through a movable carrier 68, which, on depression of a treadle, is moved to the position shown, where a portion contacts a rigid stop 70 to determine the operative position of the roll in relation to the work.  The roll 64 has a frusto-conical work-engaging face 72 which supports the whole width of the cover 74 substantially opposite to the freely rotatable roll 50, to which cement is fed by means of tubes 62 supplied from the same source as the tubes 40 for the yieldable nozzle 10.  The axis of the roll 5 is inclined downwardly and forwardly with respect to the direction of work feed so as to tension the cover to remove wrinkles and extend it to its full width, as the work is progressed through the machine. By heightwise and lateral adjustment of a carrier 54 in its supporting bracket 56 on which the nozzle 10 is supported, and by the tensioning effect on the cover 74, clean margins free from cement may be provided on the sole and on the cover adjacent the sole edge.  The second machine, shown in Fig. 5, likewise applies bands of cement 1052, 1046, respectively, Fig. 4, to the marginal portions of the platform cover and platform sole, the former by a rigid nozzle device 1032, against which the side face of the cover is pressed by a vibrating finger 1034, and the latter chiefly by an articulated nozzle device 1030, but also by a slot 1116 in the lower end of the nozzle 1032.  The nozzle 1030 is similar to the nozzle disclosed in Specification 518,779.  Cement is supplied from a tank 1060, Fig. 5, under pressure controlled by an adjustable byepass valve 1068, to the nozzle devices by a gear pump 1062, through flexible hose 1064 and thence through valve 1084 and passage 1078, Fig. 15, to recess 1074 in block 1076 which communicates with a passage in the nozzle block 1028 through passages 1070, 1072.  Rigid nozzle 1032 is attached to depending portion 1100 of block 1028 and is connected to passage 1070. Nozzle 1030 is also connected to passage 1070, a needle valve 1110 controlling the relative quantities fed to the nozzles.  The work is fed by the combined action of a power driven cover-tensioning roll 1036, Figs. 5, 12, mounted on a shaft 1132, Fig. 12, downwardly and forwardly inclined to the direction of feed, and a shoe feeding roll 1038.  The bands of cement 1046, 1052, Fig. 4, are spaced from the edge of the sole as in the first machine, the spacing on the cover being gauged by the position of the end of the rigid nozzle 1032 against which the cover is pressed by the roll 1036 to tension and smooth the cover and also assist in feeding the shoe through the machine.  The finger 1034 intermittently presses the cover against the outlet opening in the nozzle 1032 and releases it for feeding movement past the nozzle.  The spacing of the cement band on the platform sole is determined by a driven roll 1038 which engages the shoe opposite the periphery of the platform sole and which, under control of the operator, may be moved to an adjustable pre-determined operative position with respect to the nozzles 1030, 1032.  A plate 1035 is secured in fixed relation to the roll 1036 between the finger 1034 and the roll 1036 to prevent the material of the cover being drawn between the edge of the finger and the toothed roll 1036. Insertion and withdrawal of a piece of work is facilitated by mounting the shaft 1132 of the roll 1036 in a pivoted sleeve 1134 and connecting it by universal joints to a shaft driven by a belt 1204, Fig. 5, so that it may be tilted without interfering with the driving of the roll 1036.  Separation of the rolls 1036, 1038 and finger 1034 from the nozzles 1030, 1032 when work is being inserted or withdrawn is performed by levers connected to these parts and under the control of the operator by a treadle rod 1210. The shut-off valve 1084 in the cement supply system is also operated by this treadle.  A device 1304, Fig. 21, which brings out, on operation of a treadle, a freshly-coated tongue to which the overlapping ends 1050 of the platform cover 1048 may be applied, with one end above and the other below the device 1304, is provided.  The ends are pressed against the device by the operator and then withdrawn coated with cement to stick them together.  Release of the treadle permits the device 1304 to return into its receptacle 1294 through the outlet opening 1306. This opening may be closed by a pivoted cover 1342 when the apparatus is not in use.