Patent GB-190222667-A (GB)
Title: Improvements in or relating to Eyeletting or Analogous Machines.
Filed: 1902-10-18
Granted: 1903-10-01
Abstract: 22,667. Pearson, M. H., and British United Shoe Machinery Co. Oct. 18. Eyeleting.-Relates to punching and eyeleting or analogous machines such as are described in Specification No. 18,530, A.D. 1899. The parts described consist of the stopping and starting clutch, the operating and adjusting mechanism for the punches and eyelet-setting dies, the work-feed mechanism, and the eyelet box and shoots. The machine is arranged to punch or set two eyelets at the same time, but may be used as a single setting-machine. The punching-mechanism may also be employed without the eyeletsetting apparatus. The main shaft 4 carries at one end a loose driving-wheel 5, Fig. 3, provided with an internal friction surface 9 against which a conical disc 10 can be pressed when driving ; when the machine is at rest, the disc 10 bears against a friction surface 33 on the machine. The disc 10 is mounted on the shaft 4 by means of a sleeve 13 and a transverse pin 11, which works in a slot in the shaft and is adjustable by the end screw 14. The end of the sleeve 13 is screwed to receive a block 16 containing springs 17, which normally press the disc 10 into working engagement. The sleeve 13 has an eccentric portion, upon which works a ring with a guide-pin and detent tooth. The detent tooth is arranged to be engaged by a pawl 19 attached to a spring-raised treadle-rod 26. The locking of the pawl and detent causes the toothed or cam surfaces 22, 23 to ride and throw the machine out of gear. The punches 66 and eyelet-setting tools 65 are mounted in holders 63, 64 respectively, which slide in a frame 60, Fig. 5<a>. The frame 60 is pivoted on a shaft 60<b>, so that it can be raised and lowered to bring either set of tools to the operating position. The punches 66 are set eccentrically in the slides 63, Fig. 9, and are operated by pins 68 in the ends of levers 67. The upper ends of levers 67 are connected by toggle-links 70, the other ends of which are connected with a rod 73 capable of reciprocating as required. A cross-pin at the lower end of the toggle is arranged to move in a flared or other suitable guide-slot 78, to allow for uneven pressure, especially when punching from one side only. The eyelet-setting tools are spring-mounted in slides 64, the slides being provided with detent grooves 116 which limit the outward motion. The outer ends have grooves 113, in which engage catches 112 fixed to the ends of the operating- levers 86, Fig. 2. The levers 86 engage together by the rear extensions 86<b>, and are operated by a cam on the driving-shaft. The cam for operating the punching and setting levers is made double, so as to form a rigid action when punching, but to be yielding and capable of adjustment when eyeletsetting, to allow for thick and thin material. The punch blocks and setting-dies are mounted in a central-holding guide-plate 40, which is adjustably mounted in the frame 60, the removable die-pieces being held in position by a longitudinal pin. The guide-plate 40 passes between the two parts of the material, and is provided with adjustable guides for setting the eyelets at various distances from the edge of the work. Clamping-devices 46, mounted on spring-controlled bell-crank arms 47, hold the work in position, except at the moment of feeding, when the levers are separated by the action of a cam. The feed-frame is so arranged that the vertical movement is controlled by a crank mechanism, so set that the crank is on its dead centres in the highest and lowest positions of the frame. The eyelets are delivered from the hopper g to an eyelet box 118 provided with two shoots 117 having combs. The box is cylindrical, and has rotating brushes mounted on a shaft 121<b>. The shaft is driven in one direction intermittently by a roller clutch. The combs are adjustably secured to the shoots. The eyelet-box and the shoots are fixed to the supporting-disc by a transverse flat bolt.