GB431769A - Improvements in keyboard transmitters for teleprinters - Google Patents

Improvements in keyboard transmitters for teleprinters

Info

Publication number
GB431769A
GB431769A GB28381/33A GB2838133A GB431769A GB 431769 A GB431769 A GB 431769A GB 28381/33 A GB28381/33 A GB 28381/33A GB 2838133 A GB2838133 A GB 2838133A GB 431769 A GB431769 A GB 431769A
Authority
GB
United Kingdom
Prior art keywords
key
cam
roller
depressed
cylinder
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
GB28381/33A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Priority to GB28381/33A priority Critical patent/GB431769A/en
Priority to FR763352D priority patent/FR763352A/en
Publication of GB431769A publication Critical patent/GB431769A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04L15/16—Apparatus or circuits at the transmitting end with keyboard co-operating with code discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

431,769. Type - printing telegraphy. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Oct. 13, 1933, No. 28381. Void [Abridged as open to inspection under Sect. 91 of the Acts, May 28, 1934]. [Class 40 (iii)] In a keyboard arrangement for transmitting combinations of electrical impulses, means are incorporated for indicating when the signal combination corresponding to the key depressed has been transmitted. On the depression of a key 1 a roller 10 on a pivoted frame 7, positioned beneath the keys, is brought into an operative position with respect to a cam 5 on the shaft 4 of a contact cylinder 2. On the completion of a revolution by the cylinder 2, the cam 5 engages the roller 10, and the opposite end of the frame raises the depressed key.
GB28381/33A 1933-01-12 1933-10-13 Improvements in keyboard transmitters for teleprinters Expired GB431769A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB28381/33A GB431769A (en) 1933-01-12 1933-10-13 Improvements in keyboard transmitters for teleprinters
FR763352D FR763352A (en) 1933-01-12 1933-10-24 Method and device for the telegraphic transmission of write and image signals

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE763352X 1933-01-12
GB28381/33A GB431769A (en) 1933-01-12 1933-10-13 Improvements in keyboard transmitters for teleprinters

Publications (1)

Publication Number Publication Date
GB431769A true GB431769A (en) 1935-07-15

Family

ID=10274748

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28381/33A Expired GB431769A (en) 1933-01-12 1933-10-13 Improvements in keyboard transmitters for teleprinters

Country Status (2)

Country Link
FR (1) FR763352A (en)
GB (1) GB431769A (en)

Also Published As

Publication number Publication date
FR763352A (en) 1934-04-27

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