Patent GB-190415430-A (GB)
Title: Improvements in, and relating to, Apparatus for Perforating Paper and the like.
Inventor: JUDD WALTER
Filed: 1904-07-11
Granted: 1905-06-01
Abstract: 15,430. Judd, W., Fraser, A., and Hardie, A. R. July 11. Telegraphs.-Fig. 2 shows a plan of a machine for punching the spacing-holes in telegraph strips. The reel d of paper is mounted on a boss h, and as it is unwound it passes round a tension device t consisting of a roller u mounted on a spring - controlled arm v. The paper then passes over a roller 1 to a second tension device, comprising a fixed member 3 and a spring- pressed member 4, by which it is gripped, and thence over a cylindrical guide 13 which cants it towards the punching. device, consisting of a punchwheel 22 and a die-wheel 21. After the paper is perforated, it is stripped from the punches by the knife 58, and the burrs at the holes are cleared off by a scraper or knife 59 and deposited in a box 61 or in a drawer 20. The paper afterwards passes round a tension device 66 similar to the tension device t, and is wound on the drum 68. The reel of paper is gripped internally by segments i, Fig. 4, mounted on straight or curved resilient strips j fixed to a collar on the sleeve l, which revolves on a spindle m. The segments i are pressed outwards to grip the reel of paper by a conical plug o. The rotating support for the reel of paper passes through a hole y in a disc e mounted on pillars. The die-wheel 21 consists of a band 34, Fig. 10, having punch holes 35, secured by rings 36, 37 to the frame 23, the whole being fixed to a vertical spindle 26 mounted in bearings 27, 28. The lower end of the spindle is supported by a spring- controlled lever 29, seizing being thus prevented. The upper side of the wheel is closed by a disc 39, and the bottom is open and communicates with a ring-like chamber 40, formed by a fixed ring 41 and a movable ring 42, in which the punchings, dropping from a slot 38, collect. The punch-wheel 22 comprises two superposed discs 43, 44, Fig. 12, mounted on a spindle 45. The punches 49 are placed in radial grooves in the upper face of the disc 43 or in a ring 50 in a recess in the disc 43, a ring 51, changeable in order to compensate for wear, serving as a backing for the punches. For gripping the punches, a fibrous or other ring 53 is recessed into the upper disc 44, or grooves are provided in the under surface of the upper disc, the two plates being, pressed together by screws. The die or punch wheel may be adjustable laterally by means of a screw 56, Fig. 2, mounted in a bracket 57 to correct for variation in the thickness of the band 34. The winding-on drum 68 has a collapsable centre consisting of a ring divided into two parts 79, 80, Fig. 16. The paper is gripped in the gap 81 between the two parts, the part 80 being hinged at 82 and manipulated by a handle 85. The winding-on drum is driven from a pulley 89, Fig. 3, which actuates one member 88 of a friction clutch, the other member 87 of which is fixed to the shaft 76 carrying the drum. The clutch member 88 may be raised or lowered by a lever journalled in bearings 95 and actuated by a spring hand-lever 98. The hand-lever 98 is held in position by an arm engaging a projection on the band-lever. By raising a second hand-lever, the arm is disengaged from the projection and the lever 98 falls, thus separating the clutch members and stopping the winding-on drum without stopping the driving- pulley 89. The winding-on drum may be arranged to be automatically stopped either mechanically or electrically when the paper is completely unwound from the reel d. In a mechanical arrangement, a spring-pressed lever knocks the arm on the lever 98 out of contact with the projection below it, when the roll of paper on the drum reaches a predetermined size. In an electrical arrangement, a contact may be combined with the above-mentioned spring- pressed lever, and a magnet with the arm on the lever 98, or the clutch may be of the magnetic type.