Patent GB-817532-A (GB)
Title: Improvements in or relating to apparatus adapted for use in heating shoe bottoms
IPC: A43D25/20
Filed: 1954-09-04
Abstract: 817,532. Shoe bottom presses. BRITISH UNITED SHOE MACHINERY CO. Ltd., and QUARMBY, R. C. Sept. 5, 1955 [Sept. 4, 1954], No. 25713/54. Class 17(1) Apparatus for heating shoe bottoms to activate sole attaching cement comprises a plurality of devices for supporting shoes adjacent a heating means. Each device is moved, automatically from a first position to a second position, which is readily accessible to the operator, and thereafter reverts to the first position, which is less accessible, the setting into the second position being accomplished by movement of the device relatively to at least one other device, and indicating to the operator that the shoe therein is ready for attachment of the sole. The apparatus is combined with an operator-controlled cement sole press, and movement of the press actuating member causes movement of one of the devices from its first to its second position. The cement sole press has two pressing means each with an operator-controlled actuating member such that when the two members are operated alternately successive devices are indicated to the operator as supporting a shoe which is ready for sole-attachment. As shown the machine has two pressing means 2, 4, interconnected with heating boxes 12, 14, 16, 18 and 20, 22, 24, 26, and the arrangement is such that the operator of the treadle and lever 190 and 140, or 6 and 8, to actuate one pressing means moves two boxes associated with the other pressing means, one to its forward position and the other to its rearward position. Each heating box comprises hinged parts 32, 34, Fig. 3, with supporting grids 40, 42 and heating elements 54, 56, the angular relation of the two parts being adjusted through arm 46 and cam 50 by means of knob 52. Louvres 70 pivoted at 68 at the bottom of the boxes are held in closed position, as shown in Fig. 3, by engagement of pins 74, 72 (not shown) with the ends of the louvres, but when bars 78, 76 (not shown), carrying pins 74, 72 (not shown) are moved endwise, by movement of handle 148 which then acts through 150, 152, 158, 164 (not shown), 166 (not shown), 168 (not shown) and 174 the louvres fall downwards to an open position and permit cooling air to enter, e.g. when the operator wishes to leave the machine. Movement of handle 148 also acts, through a screw on shaft 88 engaged in a slot in sleeve 90 to move the shaft and sleeve as a unit and so return any forward boxes, the boxes then being held in the rearward position by engagement of a spring plunger in a recess in shaft 88. The plunger is withdrawn on actuation of treadle 6, or 190 to operate a pressing means and spring 132 returns handle 148. Each box 20-26 is supported by parallel arms 92, 94 (not shown) on a sleeve 90 (not down) which may be turned on and relative to a rotatable shaft 88, and an arm 102 on a sleeve 104 (not shown) which may be turned on and relative to cam shaft 106 carrying cams 112 (not shown), 114 (not shown), 116, and 118 associated respectively with boxes 20-26. Boxes 12-18 are similarly mounted, but shaft 106 is replaced by shaft 142 (not shown). Movement of box 26 is brought about by cam 118 which is engaged by a roll 120 on arm 122 pivoted at one end to a member extending from sleeve 90 and at the other end to the ear 126 of a forked member 128 extending from sleeve 104 and urged clockwise by spring 132, shaft 106, bearing the cam, being turned through steps of 90 degrees by a chain 136 from sprocket 220. Shaft 142 is similarly turned from sprocket 218. Sprockets 218, 220 are carried respectively by members 210, 222 each having two teeth spaced 180 degrees apart. The members have engaging projections 248, 250 and are urged apart by spring 232 so as to engage frictionally truncated cone portions of members 206, 236 adjustably spaced apart and secured to a constantly rotating shaft 200. Arms 212, 228 are moved by similar mechanisms, that for arm 212 being illustrated, to engage or be disengaged from one of the teeth in members 210, 222, and when engaged prevent rotation of that member. When lever 140 is operated to disengage arm 228 from a tooth of members 222 the latter turns through 180 degrees, turning shaft 106 through 90 degrees, and member 210 through a small angle until arm 212 engages a tooth thereof, and when extension 250 engages extension 248, members 210, 222 are held as a unit until lever 8 is moved in application of pressing means 4, further operations of lever 140 are ineffective. Movement of lever 8 acts through 288, 287, 284/286, 278, 270, 266 to rotate shaft 260 and turn arm 212 out of engagement with the tooth of member 210, whereupon the latter is allowed to turn. Movement of arm 270 also releases a latch which permits a spring to return arm 212 to a position adjacent member 210. When the pressure in means 4 is released lever 8, and hence arm 270, is automatically returned. Specification 817,533 is referred to.