GB502522A - Improvements in or relating to keyboard arrangements - Google Patents

Improvements in or relating to keyboard arrangements

Info

Publication number
GB502522A
GB502522A GB16774/38A GB1677438A GB502522A GB 502522 A GB502522 A GB 502522A GB 16774/38 A GB16774/38 A GB 16774/38A GB 1677438 A GB1677438 A GB 1677438A GB 502522 A GB502522 A GB 502522A
Authority
GB
United Kingdom
Prior art keywords
rollers
depressed
levers
key
end stops
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
GB16774/38A
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.)
Creed and Co Ltd
Original Assignee
Creed and 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 Creed and Co Ltd filed Critical Creed and Co Ltd
Publication of GB502522A publication Critical patent/GB502522A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L19/00—Apparatus or local circuits for step-by-step systems
    • 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
    • H04L17/04—Apparatus or circuits at the transmitting end with keyboard co-operating with code-bars

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Devices (AREA)
  • Mechanical Operated Clutches (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Gear Transmission (AREA)
  • Impact Printers (AREA)
  • Common Mechanisms (AREA)
  • Pile Receivers (AREA)

Abstract

502,522. Type - printing telegraphy; crowding locks. CREED & CO., Ltd., THOMPSON, A. E., and SALMON, R. D. Sept. 17, 1937, No. 16774/38. Divided out of 490,404. [Class 40 (iii)] [Also in Groups XVI and XIX] In order to prevent the simultaneous depression of two keys, a plurality of rollers 65, each mounted on a pivoted lever 64, is arranged between end stops 66, of which one only is shown. When a key lever 34 is depressed, it passes between two adjacent rollers 65, moving them sideways. The amount of free sideways movement allowed to the rollers by the end stops is such that there is only sufficient space for one key lever to be depressed at a time. The upper ends of the levers 64 may be wedge shaped in order to assist the guiding of the key levers between the rollers.
GB16774/38A 1937-01-12 1937-09-17 Improvements in or relating to keyboard arrangements Expired GB502522A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB210431X 1937-01-12

Publications (1)

Publication Number Publication Date
GB502522A true GB502522A (en) 1939-03-17

Family

ID=10156205

Family Applications (8)

Application Number Title Priority Date Filing Date
GB16710/38A Expired GB490413A (en) 1937-01-12 1937-01-12 Improvements in or relating to printing telegraph apparatus
GB15545/37A Expired GB490404A (en) 1937-01-12 1937-01-12 Improvements in or relating to transmitters for step-by-step telegraph systems
GB973/37A Expired GB490361A (en) 1937-01-12 1937-01-12 Improvements in or relating to printing telegraph apparatus
GB16778/38A Expired GB501420A (en) 1937-01-12 1937-08-27 Improvements in or relating to printing telegraph apparatus
GB22843/38A Expired GB501717A (en) 1937-01-12 1937-08-27 Improvements in or relating to telegraph apparatus
GB20844/38A Expired GB503384A (en) 1937-01-12 1937-08-27 Improvements in or relating to printing telegraph apparatus
GB16773/38A Expired GB502521A (en) 1937-01-12 1937-09-17 Improvements in or relating to transmitters for step-by-step telegraph systems
GB16774/38A Expired GB502522A (en) 1937-01-12 1937-09-17 Improvements in or relating to keyboard arrangements

Family Applications Before (7)

Application Number Title Priority Date Filing Date
GB16710/38A Expired GB490413A (en) 1937-01-12 1937-01-12 Improvements in or relating to printing telegraph apparatus
GB15545/37A Expired GB490404A (en) 1937-01-12 1937-01-12 Improvements in or relating to transmitters for step-by-step telegraph systems
GB973/37A Expired GB490361A (en) 1937-01-12 1937-01-12 Improvements in or relating to printing telegraph apparatus
GB16778/38A Expired GB501420A (en) 1937-01-12 1937-08-27 Improvements in or relating to printing telegraph apparatus
GB22843/38A Expired GB501717A (en) 1937-01-12 1937-08-27 Improvements in or relating to telegraph apparatus
GB20844/38A Expired GB503384A (en) 1937-01-12 1937-08-27 Improvements in or relating to printing telegraph apparatus
GB16773/38A Expired GB502521A (en) 1937-01-12 1937-09-17 Improvements in or relating to transmitters for step-by-step telegraph systems

Country Status (6)

Country Link
US (1) US2215802A (en)
BE (2) BE425638A (en)
CH (2) CH233476A (en)
FR (1) FR831558A (en)
GB (8) GB490413A (en)
NL (1) NL58050C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE960545C (en) * 1953-03-21 1957-03-21 Lorenz C Ag Key lock, especially for teletyping machines

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR916496A (en) * 1945-06-15 1946-12-06 Mecanique Et Transmission Metr New keypad manipulator for pulse-counting telegraphs
US2622153A (en) * 1948-10-15 1952-12-16 Teletype Corp Multiplex telegraph system utilizing electronic distributors
SE8802426L (en) * 1987-10-31 1989-05-01 Triumph Adler Ag DEVICE FOR PRINTING A SUMMARY BEARER ORGANIZED LETTERS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE960545C (en) * 1953-03-21 1957-03-21 Lorenz C Ag Key lock, especially for teletyping machines

Also Published As

Publication number Publication date
US2215802A (en) 1940-09-24
CH210431A (en) 1940-07-15
GB490413A (en) 1938-08-12
CH233476A (en) 1944-07-31
GB490361A (en) 1938-08-12
GB490404A (en) 1938-08-12
NL58050C (en)
BE425717A (en)
GB501420A (en) 1939-02-27
GB502521A (en) 1939-03-17
GB501717A (en) 1939-02-27
GB503384A (en) 1939-03-27
FR831558A (en) 1938-09-08
BE425638A (en)

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