GB352913A - Improvements in and relating to methods of transmitting signals - Google Patents

Improvements in and relating to methods of transmitting signals

Info

Publication number
GB352913A
GB352913A GB998/30A GB99830A GB352913A GB 352913 A GB352913 A GB 352913A GB 998/30 A GB998/30 A GB 998/30A GB 99830 A GB99830 A GB 99830A GB 352913 A GB352913 A GB 352913A
Authority
GB
United Kingdom
Prior art keywords
shaft
distributer
relay
crown
strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB998/30A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB352913A publication Critical patent/GB352913A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/18—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 of receivers
    • H04L13/182—Printing mechanisms
    • H04L13/184—Photographic printing and recording
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
    • H04L15/04—Apparatus or circuits at the transmitting end
    • H04L15/18—Automatic transmitters, e.g. controlled by perforated tape
    • H04L15/20—Automatic transmitters, e.g. controlled by perforated tape with optical sensing means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
    • H04L17/02—Apparatus or circuits at the transmitting end
    • H04L17/12—Automatic transmitters, e.g. controlled by perforated tape
    • H04L17/14—Automatic transmitters, e.g. controlled by perforated tape with optical sensing means

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Rehabilitation Tools (AREA)

Abstract

352,913. Typewriters. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Compagnie Francaise pour l' Exploitation des Precedes Thomson-Houston; 173, Boulevard Haussmann, Paris.) Jan. 10, 1930, No. 998. Convention date, Jan. 10. 1929. Void [Published under Sect. 91 of the Acts]. [Class 100 (iv).] Strip-controlled wave-actuated driving-mechanism. -A code strip 1, comprising transparent spots on a black ground, is passed between a light source 3 and a light-sensitive cell 2 ; the current impulses, amplified at 16, are fed to a distributer 13, 14 of the usual type, and actuate the magnets 28 of a decoding typewriter. A shaft 4, driven by a motor 40, feeds the strip 1 and is connected by a differential gear 5 to the shaft 15 of the distributer 13, 14. To obtain synchronism between the passage of the signals recorded and the passage of the brushes over the contacts of the distributer, the currents from the cell 2 pass to a brush 11 in contact with a disc 10 having three contacts and thence to the distributer through relay 7, no relay, or relay 8 according as the shaft 15 is ahead of, even with, or behind the signal impulses. The relay 7 or 8 operates to displace the crown 6 of the differential and so alter the speed of shaft 15. Since disc 10 rotates faster than the shaft 15, this correction may be made at every impulse. To attain initial synchronism, one letter is sent several times and the crown 6 operated, e.g. by hand until this letter is printed.
GB998/30A 1929-01-10 1930-01-10 Improvements in and relating to methods of transmitting signals Expired GB352913A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR681498T 1929-01-10

Publications (1)

Publication Number Publication Date
GB352913A true GB352913A (en) 1931-07-16

Family

ID=9022848

Family Applications (1)

Application Number Title Priority Date Filing Date
GB998/30A Expired GB352913A (en) 1929-01-10 1930-01-10 Improvements in and relating to methods of transmitting signals

Country Status (2)

Country Link
FR (1) FR681498A (en)
GB (1) GB352913A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2150032A5 (en) * 1971-08-12 1973-03-30 Zuehlke Engineering Ag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2150032A5 (en) * 1971-08-12 1973-03-30 Zuehlke Engineering Ag

Also Published As

Publication number Publication date
FR681498A (en) 1930-05-15

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