Patent GB-490467-A (GB)
Title: Improvements in or relating to machines for lapping plaits or lengths of fibrous material for forming soles for shoes
IPC: A43B13/00
Filed: 1937-01-14
Abstract: 490,467. Lapping rope soles. HARRIS, G. E. Jan. 14, 1937, No. 1173. [Class 17 (i)] Relates to machines for winding plaits or other lengths of jute, cotton and other fibrous materials for simultaneously forming a plurality of soles for canvas or hempen shoes. The machine has means for holding the whole of the plaits or lengths, a number of rods, one of which is interposed at each turn of the forepart centre, means for forming a double curl or fold at the heel without stopping or reversing the main winding, and means for extracting the wound soles from the machine without losing their formation. The machine comprises a pair of side columns, one of which may be retracted to allow removal of the wound batch of soles. A shaft 9, which may be turned by hand or rotated through a clutch with a hand control, is secured to a plate 6 forming one of a pair of gripping plates for the ends of the lengths. The co-operating plate 7 has at each end a pivot 6a and a sliding plate 7a to secure the plate on the lengths. Surrounding the shaft 9 is a fixed sleeve carrying rotatable arms 16, 17, 18, 19, each of which has a groove a and a pin c. The arms are duplicated at the other side of the machine, and are joined by bars 25 ... 28, the ends of the bars 9 and 25 ... 28 entering sleeves on the corresponding arms on the other side of the machine when the movable side-column is in operative position. On each side, a fifth arm 20 carries a lug e co-operating with a notch f on a sixth arm 21 slotted to engage a bearing of a member 30 to which is pivoted a link 35 connecting the member with an arm 36. All the arms are rotatable about the fixed sleeve surrounding the shaft 9. The member 30 has a projection 29 notched to engage a bar 31 connecting the arms 21. The members 30 on the two sides of the machine are connected by bars 32, 33. On the bar 21 are two projections 37, 38 which normally lie across the arm 36 and maintain this locked against turning by contact with a lug 39 on the side column 15. A spring 40 urges the arm 36 towards the arm 21. Behind the side columns are supports for a work feed table 2, or roller 3 for engaging the upper sides of the lengths, a roller 4 acting as a tension regulator, and a pair of members 41 having frictional engagement with the members 30 and urged thereagainst by springs 42. In operation, the machine being in the starting position shown in Fig. 2, a number of lengths of the fibrous material are passed over the table 2, under the rollers 3 and 4, over the bar 33, under a T-piece 8, their ends being clamped between the plates 6, 7. To facilitate this operation, the ends of the lengths are clamped between a pair of plates 5 hinged together and provided with a handle. The lengths having been positioned, the shaft 9 is rotated. The projections 6b are allowed to pass by the notches a in the arms 16, and then engage the other ends of the arms, carrying these with them and positioning the bar 25 between the turns, the lugs c picking up another pair of arms at each rotation until the bars 20 have been carried to the position shown in Fig. 3. On engagement with the lugs 29, the bars 20 free these from the bar 31 and then engage the arms 21 swinging their upper ends and the members 30 clockwise. At this time the arms 36 are prevented from turning, so that the links 35 swing the members 30 about their axes, as the arms 21 swing clockwise, producing the " curl " shown in Fig. 4. The members 41 urge the bearings of the members 30 to the end of the slots 34. The projections on the arms 21 now come into line with the arm 36, allow the springs 40 to push the arms clear of the lugs 39, and allow the whole assembly to be rotated a sufficient number of turns to reach the required size of sole. A fork is then placed over the assembly of soles, the unwound lengths are severed, and the movable side column is retracted to divide the bars 25 ... 28 and 31 ... 33. The plate 7 is freed and the lapped soles can be withdrawn. The machine is then turned backwards to starting position.