GB191307530A - Improvements in Number Impulse Instruments for Automatic Telephone Systems. - Google Patents

Improvements in Number Impulse Instruments for Automatic Telephone Systems.

Info

Publication number
GB191307530A
GB191307530A GB191307530DA GB191307530A GB 191307530 A GB191307530 A GB 191307530A GB 191307530D A GB191307530D A GB 191307530DA GB 191307530 A GB191307530 A GB 191307530A
Authority
GB
United Kingdom
Prior art keywords
wheel
setting
spring
locking
impulses
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
Other languages
English (en)
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 Corp
Original Assignee
Siemens and Halske AG
Siemens Corp
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 Corp filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of GB191307530A publication Critical patent/GB191307530A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/32—Locking setting devices during transmission to prevent interference by user

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
GB191307530D 1912-03-29 1913-03-31 Improvements in Number Impulse Instruments for Automatic Telephone Systems. Expired GB191307530A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE191307530X 1912-03-29

Publications (1)

Publication Number Publication Date
GB191307530A true GB191307530A (en) 1913-10-09

Family

ID=32604539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191307530D Expired GB191307530A (en) 1912-03-29 1913-03-31 Improvements in Number Impulse Instruments for Automatic Telephone Systems.

Country Status (2)

Country Link
DE (1) DE277145C (cs)
GB (1) GB191307530A (cs)

Also Published As

Publication number Publication date
DE277145C (cs)

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