GB191506480A - Improvements in "Telephone Systems." - Google Patents

Improvements in "Telephone Systems."

Info

Publication number
GB191506480A
GB191506480A GB191506480DA GB191506480A GB 191506480 A GB191506480 A GB 191506480A GB 191506480D A GB191506480D A GB 191506480DA GB 191506480 A GB191506480 A GB 191506480A
Authority
GB
United Kingdom
Prior art keywords
current
interrupter
telephone systems
alternator shaft
turner
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
Inventor
Hubert Sydney Turner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB191506480A publication Critical patent/GB191506480A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Control Of Direct Current Motors (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

6480. Turner, H. S. June 20, 1914, [Convention date]. Drawings to Specification. Commutator switching-arrangements.- In a method of producing a pulsating current for ringing telephone bells, an interrupter is mounted on an alternator shaft and is so arranged that only that part of each half-wave of current when the voltage is at its highest is sent to line, the intervals between such pulses of alternating current being nearly filled by direct-current impulses from a battery controlled by a second interrupter on the alternator shaft.
GB191506480D 1914-06-20 1915-04-30 Improvements in "Telephone Systems." Expired GB191506480A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US191506480XA 1914-06-20 1914-06-20

Publications (1)

Publication Number Publication Date
GB191506480A true GB191506480A (en) 1916-05-01

Family

ID=32683060

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191506480D Expired GB191506480A (en) 1914-06-20 1915-04-30 Improvements in "Telephone Systems."

Country Status (2)

Country Link
DE (1) DE321823C (en)
GB (1) GB191506480A (en)

Also Published As

Publication number Publication date
DE321823C (en) 1920-06-15

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