Patent GB-190010142-A (GB)
Title: Improvements in Printing Telegraph Apparatus.
Inventor: MURRAY DONALD
Filed: 1900-06-01
Granted: 1900-10-27
Abstract: 10,142. Murray, D. June 1. Type - writers ; type; type, setting.- Printing - telegraph apparatus is arranged so that a record produced in the form of a perforated strip of paper is employed to control the action of a typewriter, or a typesetting or type-casting-machine. Fig. 1 shows diagrammatically the receiving apparatus up to the perforator, connected by line 29 with an automatic transmitter a. The transmitter may be either single or double current, and is arranged to send impulses of varying duration, the element. of which are synchronized with the receiving station. The receiver is provided with a reed 63 vibrated by an electromagnet 60 in approximate synchronism with the transmitter, flexible spring stops 61, 62, arranged to act through greater limits than those allowable for producing their normal rates of vibration, being employed to correct and control the synchronism. The reed is provided with a contact arm 64 in the circuit of electromagnet 60 and springs 66, 68, in the circuits of the perforator magnets. The main circuit is provided with a relay r, one stop 99 being connected to the relays d, e in the perforator and synchronizing circuits respectively. The main line relay f controls the shunt to the perforator magnets. The perforator consists of two magnets 44, 47, of which the former operates the punch 38 through its armature 43, and the latter the spacing feed-wheel 50 through its armature 53. The armatures 43, 53 are provided with contact-levers in the circuits of the electromagnets and are cross connected so as to act alternately. The punch 38 is connected to the lever 42 by means of a spring link 41, and is provided with a cutting-face consisting of three or more V-shaped points 14, formed by transverse V-shaped cuts. The perforated tape is prepared without any spaces between the completed signs, each sign consisting of one or more perforations out of a series of five. All the signals occupy the same length of tape, so that, when the tape is employed to operate a type-writer or other similar machine, it is fed through the space of a whole signal. Figs. 23 and 25 show views of the apparatus for operating the type-writer &c. ; 201 is a bed, mounted on supports and carrying five combs 248, the spaces corresponding in number to the levers 112 employed. Each comb has an end extension 251 for engaging with the perforated tape, and is provided with a restoring spring 294 on the tape carriage. The tape carriage 209 reciprocates in grooves under the action of a cam 243 on the driving-shaft 205. The tape is fed by a star-wheel 108, the shaft 229 of which carries at its lower end a ratchet-wheel 230 provided with a spring detent pawl. The wheel 230 engages with a feed pawl 231 near the end of its outward movement. The tape passes between and is held by two perforated guide-blocks 211, 212, so that, as the carriage moves to its inner position, some of the combs remain stationary, while others are moved by their extensions 251 bearing against the tape, thus bringing some one set of notches in the combs into line, so that one of the levers 112 can fall. Each of the levers 112 is provided with a spring 257 and with a sliding rod 273, which is connected to one of the operating-levers 106 of the type-writer &c. An adjustable restoring frame 256 is operated by cams on the shaft 205, and a striker-bar 266 is carried by the pivoted frame 264 and operated by a separate cam on the shaft 205 for effecting the movement of the type-writer levers 106. The perforated tape is passed between adjustable tension rollers, and is cleared from the star-wheel 108 by means of a curved screen 225.