Patent GB-738491-A (GB)
Title: Improvements in or relating to apparatus suitable for use in the manufacture of shoes
IPC: A43D25/18
Filed: 1952-05-09
Abstract: <PICT:0738491/III/1> <PICT:0738491/III/2> <PICT:0738491/III/3> <PICT:0738491/III/4> Apparatus for applying fluid (e.g. cement) on to portions of a shoe which extend around an end portion of the shoe bottom, includes a spray gun, and an arrangement whereby the gun is caused to swing in such a path as, during its swinging movement, to direct fluid consecutively on to portions of the shoe which lie respectively at one side thereof, at the extreme end of the shoe, and at the other side thereof, thereby applying the fluid around said end portion from one side to the other.  In one form of apparatus (Figs. 1 and 2) there is a shoe gauge 78, against the underside of which is placed the toe portion of the bottom of an insole, with the toe portion of the edge of the insole engaging two hooks 80, so that the insole and out-turned margin of the shoe upper are exposed to spray directed from a spray gun 2 mounted on a rotatable shaft 6.  When a treadle (not shown) is depressed, a rod 56 descends compressing a spring 60, whereupon a compression spring 70, acting through a slider member 68, links 72 and a lever 74, rotates a shaft 22 carrying a forked lever 24 having pins 26, so that pins 26 depress a collar 16 having a projection 18 which operates a trigger 20 causing gun 2 to spray cement.  Further movement of the treadle brings the upper ends of slots 54 into contact with a pin 52 in an arm 42 of a bell-crank lever 38 which is caused to rock, so that the other arm 36 acts through a link 34 turning an arm 32 carried by the shaft 6, and gun 2 swings nearly half a turn, applying cement around the end portion of the shoe, until further rotation is prevented by a stop 44, whereupon the treadle is released and the spray gun 2 returns to its starting position under the action of springs 82 and 84, the trigger 20 being released at the end of the return swing.  In another form of the apparatus (Figs. 4 and 5) a shoe gauge 204, similar to the gauge 78 above, positions a shoe below a spray gun 200 mounted on a hollow spindle 208 which is rotatable.  When a treadle (not shown) is depressed, a treadle rod 248 is raised and a spring 250 raises a yoke member 246, the transverse lower end of which is slidably mounted on rod 248, causing a trigger lever 240 to rock and depress a trigger plunger 226, against a spring 232.  The plunger 226, which is slidably mounted in the hollow spindle 208, trips a trigger 230 on spray gun 200, causing the gun to spray cement.  Further depression of the treadle causes spring 250 to yield and the lower ends of slots 272 in the arms of a fork 266, fixed to the top of the treadle rod 248 between the arms of the yoke member 246, engage a pin 270 fixed in one arm of a bell-crank lever 268, which arm is embraced by the arms of fork 266, causing the bell-crank lever 268 to rock.  Rocking of the bell-crank lever 268 about a pin 274 causes a link 280 to swing a quadrant 216 about half a turn, and so, through a pinion 212 secured to the top of spindle 208, the spray gun is swung whilst spraying cement.  On release of the treadle a spring 264 acts to swing the spray gun back to its starting position and to stop the spraying of cement when it has returned.