Patent GB-190918672-A (GB)
Title: Improvements in or relating to Heeling Machines.
Inventor: PLANT THOMAS GUSTAVE
IPC: A43D79/00
Filed: 1909-08-13
Granted: 1910-11-14
Abstract: 18,672. Plant, T. G. Aug. 13. Heels, machines for.-In a heeling-machine for attaching loaded heels, such as those produced by the heel-loading machine described in Specification 12,867/09, to shoes and afterwards blind-nailing on a top-lift, means are provided for determining the pointing of the heels relative to the shoes. The shoe is supported on a jack, the spindle 66, Fig. 5, of which moves in a sleeve 68 projecting from a slide 62, which can be drawn forwards to place the shoe in position. A second slide 64 carries a frame 70, in which a support 72 slides vertically, carrying a shoe back-stop 74 and counter clamps 75, which are mounted on overlapping bell-crank levers, the ends of which are forced downwards to close the clamps by a spring 82. A bar 90 having a cam-surface 91 projects from the sleeve 68, and, as the slide 62 is moved forwards to remove the shoe from below the nailing-mechanism, the cam 91 depresses the clamp carrier 72; thus leaving the space directly below the nailing-means clear. A wedge 360 moved by a screw.is provided for adjusting the vertical position of the counter clamps 75 when in operative position. When the shoe has been placed in position and a loaded heel and a top-lift inserted below a removable multiple and adjustable nail block 54, Fig. 3, and in a top lift carrier of the type described in Specification 11,711/09, respectively, one .of two..treadles 96, Fig. 7, is depressed, the first effect of which is to cause a rod 106 to be depressed, thus releasing a catch 110, Fig. 5, and allowing a spring-operated rod 116 to start the slide 62 in motion towards its operative position. The operator manually completes its movement. Further depression of the treadle causes an arm 122, Fig. 7, to come in contact with a projection 125 on one side of a rod 126, thus rotating the rod. If the other treadle is depressed, the rod is rotated in the other direction. One treadle is used for right and the other for left shoes. The rod 126 is provided at its upper end with a bevel-pinion 128, Fig. 3, meshing with a similar pinion on a shaft 132, on which is formed a thread 134 engaging a block 136. A, lever 138 is attached at its ends by universal joints to the block 136 and to a table 60, Fig. 5. The position of the pivot of the lever may be altered to vary the length of movement of the end attached to the table 60. The table 60 carries the jacksupporting slide 62, and is itself movable by the lever 138 in circular guides 61 on a table 58 longitudinally movable in slides on a cross bar 32 of the main frame. The shoe is thus moved through a definite angle depending upon the position of the pivot of the lever 138. To render the pointing of the shoe accurate in the event of incorrect holding by the counter clamps, one or other of a pair of fore-part gauges 88, Fig. 3, carried on arms 86 is moved into contact with the side of the shoe by cams 154 on shafts 152 rotated through gearing by the shaft 132. A second cam on one of the shafts 152 holds the counter clamps 75 apart against the pressure of their operating-spring until the fore-part gauges 88 are ready to operate. The arms 86 are carried on pivots mounted on slides on the clamp support 72, the slides being adjustable by a hand-wheel 354. The gauges 88 may be adjusted along the arms 86 for different sizes of shoes. The axis on which the table 60 turns is normally directly below the centre of the back of the top-lift. A square appearance is thus given to the heel. If desired, the table 58 carrying the table 60 may be moved forwards or backwards, thus causing a right or left appearance to be given to the heel. Before the nailing operation commences, the heel is measured, and the height of the jack is automatically adjusted to prevent the heel from being damaged by being compressed through more than a determined amount. The jack spindle 66, Fig. 10, is mounted in a slide 166 moving horizontally in guides 167 in a vertically sliding block 168 carried by the upper end of a measuring-spindle. The measuring-spindle comprises two pairs of right and left handed screws, each pair being connected by a sleeve in the form of an elongated pinion. The upper screw 170 is pinned to the block 168, which may be raised by moving a handle 186 engaging with a pinion 184 meshing with the upper pinion sleeve 172. The lower pinion sleeve is operated by a rack 188, Fig. 7, moved by a spring-pressed lever 190, which is released from a catch 196 by the depression of the treadle. The shoe is thus automatically raised after the jack has been moved under the nailing- devices until the heel seat is pressed against the heel. The bottom screw of the measuring-spindle is attached to a support 260 resting on a strong spring 270, and is screwed at its lower end into a collared sleeve 272 sliding in a cylinder 276 on the frame. The sleeve 272 is adjustable on the support, thus varying the compression to which the heel is subjected. The bottom screw is prevented from rotating during the measuring operation by a roll 264 on a cam-operated bell-crank lever 262 passing below a projection 265 on the support 260. Before compressing the heel, the rack 188, the jack slide 62, and the swinging table 60 are locked against movement by mechanism operated by a cam operated lever 226, Fig. 5. The depression of the treadle throws in a clutch starting the power shaft, and the cross-head 46 is depressed by cams on the main shaft to compress the heel. As the cross head is lowered, a rod 286, connected by a lever and universal joint with the drive block which operates the drivers in an inclined direction, moves downwards through the telescopic portion 284 of an adjustable joint with a rod 282. At the end of the compression, the rod 286 is operated, driving the nails through the heel and clenching the ends on the inside, but leaving the heads projecting. The cross-head is then raised, the camoperated roll 264, Fig. 10, passing above the stop 265 on the jack support to retain the shoe in its depressed position, and the top-lift holder is swung under the cross-head, positioning the top-lift for spanking on the heel. The cross-head then descends for the second time, blind-nailing the top-lift. The power shaft is adapted to revolve four times to reciprocate the cross-head twice, to attach the heel and spank on a top-lift. The shaft is provided with a one-revolution clutch so that the machine may be stopped at the end of each of the first two revolutions of the power shaft, for the operator to see if the heel has been properly attached, and to ascertain that the top-lift is properly positioned relatively to the heel. A catch is provided to prevent the machine from being stopped at the end of the third revolution during which the top-lift is attached, the catch being released at the end of the fourth revolution, which is occupied in returning the various parts of the machine to their " set " position for a fresh shoe. In a modification, the jack is replaced by an iron anvil, the measuring-mechanism in this case being thrown out of operation.