GB197797A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB197797A
GB197797A GB859822A GB859822A GB197797A GB 197797 A GB197797 A GB 197797A GB 859822 A GB859822 A GB 859822A GB 859822 A GB859822 A GB 859822A GB 197797 A GB197797 A GB 197797A
Authority
GB
United Kingdom
Prior art keywords
energized
ringing
slow
relay
intermittently
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
GB859822A
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.)
WESTERN ELECTRIC CO Ltd
AT&T Corp
Original Assignee
WESTERN ELECTRIC CO Ltd
Western Electric Co Inc
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 WESTERN ELECTRIC CO Ltd, Western Electric Co Inc filed Critical WESTERN ELECTRIC CO Ltd
Priority to GB859822A priority Critical patent/GB197797A/en
Priority to US610752A priority patent/US1541387A/en
Publication of GB197797A publication Critical patent/GB197797A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

197,797. Western Electric Co., Ltd., and Polinkowsky, L. March 24, 1922. Commutator switching-arrangements. - In a method of generating ringing-current in an automatic telephone, system, the primary windings of the ringing-transformer 48 are connected to the front and back contacts of a slow-acting relay 45 which is wired to a slow-acting relay 46 in such a way that these relays are intermittently energized and de-energized, thus generating ringing impulses in the transformer secondary. The arrangement operates periodically under control of a relay 44 energized by a switch arm 47b mounted by a magnet 47 energized intermittently by a set of interconnected relays 41, 42, 43.
GB859822A 1922-03-24 1922-03-24 Improvements in or relating to telephone systems Expired GB197797A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB859822A GB197797A (en) 1922-03-24 1922-03-24 Improvements in or relating to telephone systems
US610752A US1541387A (en) 1922-03-24 1923-01-05 Telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB859822A GB197797A (en) 1922-03-24 1922-03-24 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
GB197797A true GB197797A (en) 1923-05-24

Family

ID=9855555

Family Applications (1)

Application Number Title Priority Date Filing Date
GB859822A Expired GB197797A (en) 1922-03-24 1922-03-24 Improvements in or relating to telephone systems

Country Status (1)

Country Link
GB (1) GB197797A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4432504A (en) * 1981-03-02 1984-02-21 Pace Ron L Holder and dispenser for bathroom tissue rolls

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4432504A (en) * 1981-03-02 1984-02-21 Pace Ron L Holder and dispenser for bathroom tissue rolls

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