GB1175701A - Improvements relating to the Trimming of the Sole Edges of Footwear - Google Patents

Abstract

1,175,701. Trimming soles. CLARKS Ltd. 16 Jan., 1967 [17 Jan., 1966], No. 2176/66. Heading A3B. A shoe 1 supporting device used in sole trimming apparatus comprises a last 4 rotatably mounted about a vertical axis with the plane of the sole normal to the axis and means to rock the last about a second axis so that the toe-end portion of the sole is normal to the vertical axis when the toe-end is being trimmed. The shoe is supported on a platform 13 rockably supported on a table 14 on a roller 15. The peg 113 on the platform prevents relative rotation of the table and platform. The table is freely rotatably mounted on an axis 27 aligned with the vertical of rotation axis. The last 4 has a peg 5 which is connected to a rocking bar 6. The bar 6 has a pad 9 which engages the toe and a drive pin 11 which engages in a slot 21 in a rotary arm 20. The leg 16 depends from a slider 17 and engages a groove 10 on the bar 6. The slider 17 has two end pins 18, 19 which extend through slots 21 in the rotary bar 20 on which cam rollers 41, 42 are mounted. The slider and the bar 20 have rollers therebetween held by strips 17a to facilitate relative movement. The rotary bar 20 is rotated by a spindle (24), Fig. 2 (not shown), rigidly connected to the bar. Cams 43, 44 mounted on the spindle make the slider 17 move relative to the bar 20 to impart predetermined rocking to the last 4 as it is rotated about the vertical axis. The trimming tool 39 comprises a shell 45 with flutted cutting edges and a cap 57 which rides along the welt 3. If the rear part of the heel is to be pitched forwards or backwards, the cams and followers are arranged to cause the last to tilt accordingly during each revolution.