Patent GB-362370-A (GB)
Title: Improvements in electrically operated type-composing systems and apparatus
IPC: H04L17/00
Filed: 1930-06-02
Abstract: 362,370. Type - making machines. TELETYPE CORPORATION, 1410,Wrightwood Avenue, Chicago, U.S.A. June 2, 1930, No. 17069. Convention date, June 5, 1929. [Class 100 (iii).] Relates to facilities for editing perforated strip in a telegraphic news-distributing system comprising type-composing machines controlled electrically. According to the invention, the tape-operated transmitter is arrested upon an improper operation of the composing machine. System. Slip, perforated at the central office, Fig. 1 (not shown), of a news-distributing system, controls the transmission to local' printers. The printed record is edited, and the perforated slip is cut and patched accordingly; the matter is then retransmitted, Fig. 2 (not shown), over several branch office circuits by relays in series. The branch offices take simultaneous printed and perforated records which are again edited and patched, Fig. 3 (not shown), and the perforated record is then passed to a local transmitter which controls a local composing machine, Fig. 4 (not shown). Alternatively, the uncorrected tape may be passed directly to the local transmitter and the editor's corrections may be applied, with the aid of the printed record, directly to the type set up by the composing machine. Perforator code. For a line-setting machine a 6-hole code may be employed having single-hole combinations a, b, Fig. 6 (a) for line-feed of page printer and elevator-actuation in the composing machine, and (b) for line-feed only. The line feed signal b, when repeated several times to denote a fresh paragraph, can be recognized readily and so, facilitates editing of the tape. Other combinations may be used to indicate the end of a section in the 6-hole tape, Fig. 13 (not shown), or in the case of a single-type-setting tape with 30 holes, Fig. 14 (Cancelled, not shown). The en, em, and thin space combinations can be converted one into another by addition of holes. In an alternative code, Fig. 14, the combinations f, g, h are ordinarily punched for thin, en and em spaces, but any of these can be converted by the use of emergency perforator keys, to one of the alternative signals k, j, i, denoting the same spaces. Patching of tape. When tape is to be cut and patched, the end of one piece may be perforated as at m, Fig. 16, to permit of overlapping ; or a patch punched with all possible holes may overlap the ends of both the parts to be joined, Fig. 10 (not shown). Holes may be blocked out by means of blank sections of tape pasted in position. Transmitter for 6-impulse code for controlling line-setting machine. Six impulses in addition to starting and stopping impulses are emitted for each character, under the control of a tape 8, Fig. 21, co-operating with six pecker levers 7, whose lower ends permit or prevent, as the case may be, the successive rising of levers 2 under the control of cams 4. The common line contact-maker 1 is operated successively by the six levers 2. The rotation of the friction-driven transmitter shaft 3 is held up whenever the latch 10 is released by de-energization of magnet 12, in response to signals sent back from the printer. Tape-feed safety device. When the type-casting machine is fed directly from the reperforater, with out preliminary editing of the slip, the transmission is stopped when the slip 8, Fig. 21, tightens, tilting the lever 154 and moving the stop 151 into the path of a rotating projection 152. Line-setting machine controlled at a distance. The input impulses are applied to the line magnet 13, Fig. 21, which in known manner moves the start-stop rotary selector 14 axially so as to set the latches 15 and thus control the permutation bars 16 for selecting actuator bars 17, some of which effect closure of selected contacts exemplified at 19. According as one or other of the contacts 24, 25 has been closed by the case-shift bars 21, 22 (which are operated by signals similarly to the bars 17), one or other of two selected magnets 26 (selected by contacts 19) is energized, the alternative selections corresponding to two cases of type. Each magnet 26 acts instead of a corresponding key on the setting-machine keyboard, Fig. 20 (not shown), to release a matrix. The matrices accumulate in the usual elevator carriage until a line-casting signal is received. The line-casting signal effects closure of the contacts 60, energizing the relay 62 which breaks at 65 the circuit of the transmitterstarting magnet 12 to hold up the transmission, locks itself from battery 68 through armature 67, and cuts in at 64 the indicator lamp 69. The line-casting signal also cuts in at 60 the slow-acting magnet 63 which effects testing of the length of the line of type which has been set up. This magnet holds on momentarily via 73, cuts in at 71 the proving magnet 47, and also cuts in the magnet 72 which then short-circuits the magnet 63, so that the line-proving interval is of brief duration. The line-proving magnet 47 releases a spring drum 45 which if the line of type is of the right length, closes at 49 (by means of a cam 48 of variable length) a circuit through magnet 78, which locks up via 79, cuts out at 80 the slowacting magnet 82, and energizes the line-casting solenoid 43 through the relay 84. The solenoid 43, by turning the shaft 36, raises the elevator carriage against the control of a dashpot (see below) and so initiates the casting of the line, this action being alternative to operation by the usual handle 37. Energization of the solenoid 43 disables, by breaking contacts 51, the transmitter-starting magnet 12 until the return of the solenoid core 42. When the core is withdrawn the contacts 50 are opened to restore the magnets 62, 78, 82, 43. If the line of type is not of the right length, contacts 49 fail to close during the process described and magnets 78, 82, 84, 43 fail to act, but magnet 62 nevertheless acts to hold up transmission and lights the indicator 69. The operator manually opens contacts 85b to ensure stoppage of the transmitter, opens 85a to reset all the relays, and corrects the line by hand. He then closes contacts 86 to effect line-casting through magnets 62, 63, which act as before, and closes contacts 85b to restart the transmission. Switch 85 or 86 may be used to effect line-casting (through relay 78) according as contact 49 is or is not closed. Safety contacts 87, 88 respectively hold up transmission when operated by the usual clutch 89, Fig. 20 (not shown), which is released by bent matrices and by the usual lever which stops the line-setting machine when a line fails to cast through being too long. Should the elevator solenoid 43 be energized before the cross carriage has returned to its normal position, the elevator is prevented by mechanical means 92a, Fig. 22 (not shown), from rising, but the solenoid remains energized and type-casting proceeds as soon as the elevator is free to move. Reperforator for use with 6-impulse code. Associated with the composing machine is an ordinary type-printer controlled by a line magnet and a reperforator controlled by a line magnet 97, Fig. 25. The selector cam shaft 99 makes one revolution per letter, and selectors 100 act through levers 101 to position the interponents 102. The selected interponents are driven by hammer 111 against punches 103, the hammer-driving cam 110 being clutched to shaft 99 towards the end of the stroke under control of the cam 104. The tape feed is operated by the return of the hammer through the plate 114 and pawl 116. Transmitter controlled by 30-hole-position tape. In a tape for single-type-casting machines, each row comprises 30 hole positions, one hole being punched in each half of the row. For transmission over the line 177, Fig. 29 (Cancelled), this two-hole code is converted to an 8-impulse code, starting and stopping impulses being transmitted in addition. The tape controls A and B groups of peckers 170A, 170B each comprising 15 peckers. The active peckers actuate two selections out of the A and B groups of universal bars, 174A, 174B, and so put a selection of polarities on the commutator segments 173 for transmission to the line 177. Reperforator for 30-hole code. The impulses in the received 8-impulse signals are distributed by a start-stop distributer 182, Fig. 29 (Cancelled), to eight magnets 185A, 185B, controlling latches 188 which release a selection of the eight permutation bars 189A, 189B. The permutation bars select a punch selector 191A and a further punch selector 191B. These co-operate with punches 192 to punch one hole in each half of a tape with 30-hole position in each row. 4-position case-shift for type-printing telegraph. The 8-impulse signals received over line 177, Fig. 29 (Cancelled), are applied also to a magnet 198 controlling a type-printer in which six of the impulses set the notched permutation bars 201 to select a type lever 202, while the remaining two impulses select case-shift magnets 205, 206. These magnets control, through toggle mechanism 209, 210, sliders 212, 213 which are linked to a fixed part 211 and to the platen-arm 208. The toggle-mechanisms having unequal throws, four shift positions are obtainable. The Specification as open to inspection under Sect. 91 (3) (a) includes the subject-matter of the last three paragraphs of this abridgment, but that subject-matter does not appear in the Specification as accepted.