An Improved Machine for Centrally Punching and Spacing Holes in Leather Straps, and for like purposes

摘要

21,790. Weston, B. S., and Wilton, H. S. Oct. 26. Punching and perforating machines for straps &c. -In a machine for punching holes in straps at regular intervals, and for like purposes, the punch G is carried by a vertical slide B, operated by an eccentric D which is rotated about the pivot F by a hand-lever E. Upon the lever E being raised as far as possible, the punch G is withdrawn from the work S1 and a pin E2 strikes a pivoted lever V, thereby causing a finger Y, attached to the lever V, to engage the last hole punched and advance the work an amount regulated by a stop X. Rubber springs Z, Z' are provided to bring the feed mechanism back to its normal position. The strap S1 is fed forward between two guides I which are connected by pins K passing through slots L to levers M pivoted below the table at N. The pins K are also connected by rods R to a point S on a slide O shown in dotted lines. The guides I may be moved apart by the action of a hand-lever U which draws back the slide O. A spring T moves the slide O in the opposite direction and so closes the guides I upon the work. The brass disk H' upon which the punch G descends may be raised from its socket by pressure upon a knob H', which is connected with it underneath by a rocking lever. To provide for lateral adjustment, the punch G is provided with a notched projection G', Fig. 3, which engages a projection on the punch-bar B and enables the punch to be rocked laterally and clamped in the required position by screws G2. A shoot G3 allows the punchings to fall clear of the strap.