Patent GB-190928926-A (GB)
Title: Improvements in or relating to Machines for Inserting Fasteners of Metal or Wire in Leather Goods and the like or for Producing as well as Inserting said Fasteners.
Inventor: BOULT ALFRED JULIUS
IPC: A43D69/02
Filed: 1908-09-28
Granted: 1909-12-28
Abstract: 28,926. Boult, A. J., [United Shoe Machinery Co.]. Sept. 28, 1908. Slugging. -- Relates to high-speed fastenerinserting machines for leather and the like, particularly for use in the manufacture of boots and shoes, and consists in the provision of means for varying the length of the fastener cut off from the fastener-material, and in automatic means for presenting fasteners to the gripping and inserting means in a predetermined series of varying lengths. The invention is particularly designed for use with the multiple heel-slugging machine described in Specification 20,322/08, and in its associated Specifications 28,925/09 and 28,927/09. To vary the length of the fasteners, the wires are passed through and yieldingly gripped in a retainer 80, Figs. 4 and 6, which is adapted to be moved by rack mechanism controlled by the engagement of a cam roll 106 on the end of a lever 102 with a cam 110 on a shaft 114. This shaft is driven by worm gearing from the main shaft 14, and rotates once to every six revolutions of the main shaft. The cam 110, therefore, is provided with six removable cam members 108, which are adapted in turn to actuate the cam roll 106. By varying the shape of these members, the retainer 80 and the fastener strips are moved, while the cutters are inoperative, lengthwise more or less, relatively to the point in the path of their movement at which the cutters are actuated to grip the strips, so that the length of fastener is varied. By varying the order of the members 108, the order of lengths in which the fasteners are inserted may be varied. In some cases, a particularly long fastener is required, and for this purpose a second means for varying the length of fastener is provided. This consists in providing a modified fastener length cam, which, at a predetermined time, moves the retainer 80 away from the cutters while these latter are pulling a length of wire through the retainer. This variation is added to the variation produced by the cam-members 108. Means are also provided to ensure that this longest fastener will be inserted first and at a particular part of the work, such as at the breast corner of a heel. After passing through the retainer, the wires pass through a presenter, which is movable transversely to the cutter-head automatically to vary, as desired, the pattern or design formed by the fasteners when inserted. The means for effecting this control of the wires is the same as that described in Specification 17,432/05. The means for gripping, feeding, inserting, and severing a fastener, the work - supporting mechanism, the work - feed mechanism, and the driver mechanism are controlled by a cam - disk loosely mounted on the shaft 114 but adapted to be clutched to and released from the shaft six times during each revolution. This is effected by a clutch which is described in Specification 20,322/08. This disk is designed so that the various mechanisms controlled by it are placed in operative relation to each other and to the continuously-moving parts driven by the main shaft during the first three clutching movements of the disk, and the first fastener is partly inserted during the last half of the fourth clutching movement. To prevent, therefore, any fastener from being formed until the proper time, the retainer 80 is locked by means of a pawl 340 to the cutterslide 66, so that there is no fastener-measuring relative movement of the strip and the gripping-mechanism.