GB518721A - Improvements in impulse senders of the type used in telephone systems - Google Patents

Improvements in impulse senders of the type used in telephone systems

Info

Publication number
GB518721A
GB518721A GB25188/38A GB2518838A GB518721A GB 518721 A GB518721 A GB 518721A GB 25188/38 A GB25188/38 A GB 25188/38A GB 2518838 A GB2518838 A GB 2518838A GB 518721 A GB518721 A GB 518721A
Authority
GB
United Kingdom
Prior art keywords
impulse
wheel
movement
spring
springs
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
GB25188/38A
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.)
General Electric Company PLC
Original Assignee
General Electric Company PLC
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 General Electric Company PLC filed Critical General Electric Company PLC
Priority to GB25188/38A priority Critical patent/GB518721A/en
Priority to US289949A priority patent/US2276514A/en
Priority to BE436177A priority patent/BE436177A/fr
Publication of GB518721A publication Critical patent/GB518721A/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
    • H04M1/34—Lost-motion or other arrangements for ensuring a pause between successive digit transmissions

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Transmission Devices (AREA)
GB25188/38A 1938-08-27 1938-08-27 Improvements in impulse senders of the type used in telephone systems Expired GB518721A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB25188/38A GB518721A (en) 1938-08-27 1938-08-27 Improvements in impulse senders of the type used in telephone systems
US289949A US2276514A (en) 1938-08-27 1939-08-14 Impulse transmitting device
BE436177A BE436177A (enrdf_load_stackoverflow) 1938-08-27 1939-08-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25188/38A GB518721A (en) 1938-08-27 1938-08-27 Improvements in impulse senders of the type used in telephone systems

Publications (1)

Publication Number Publication Date
GB518721A true GB518721A (en) 1940-03-06

Family

ID=10223660

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25188/38A Expired GB518721A (en) 1938-08-27 1938-08-27 Improvements in impulse senders of the type used in telephone systems

Country Status (3)

Country Link
US (1) US2276514A (enrdf_load_stackoverflow)
BE (1) BE436177A (enrdf_load_stackoverflow)
GB (1) GB518721A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522004A (en) * 1947-12-24 1950-09-12 Telephonics Corp Electric impulse transmitter pawl silencer

Also Published As

Publication number Publication date
US2276514A (en) 1942-03-17
BE436177A (enrdf_load_stackoverflow) 1939-09-30

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