GB372125A - Apparatus for connecting a source of acoustic waves with several listeners for a suitable time - Google Patents

Apparatus for connecting a source of acoustic waves with several listeners for a suitable time

Info

Publication number
GB372125A
GB372125A GB16416/31A GB1641631A GB372125A GB 372125 A GB372125 A GB 372125A GB 16416/31 A GB16416/31 A GB 16416/31A GB 1641631 A GB1641631 A GB 1641631A GB 372125 A GB372125 A GB 372125A
Authority
GB
United Kingdom
Prior art keywords
circuit
coupled
clockwork
relay
meter
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
GB16416/31A
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.)
HOLDING INTERNATIONALE LUXEMBO
Original Assignee
HOLDING INTERNATIONALE LUXEMBO
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 HOLDING INTERNATIONALE LUXEMBO filed Critical HOLDING INTERNATIONALE LUXEMBO
Publication of GB372125A publication Critical patent/GB372125A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/76—Wired systems
    • H04H20/82—Wired systems using signals not modulated onto a carrier
    • H04H20/83—Wired systems using signals not modulated onto a carrier not sharing the network with any other service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/76—Wired systems
    • H04H20/77—Wired systems using carrier waves
    • H04H20/81—Wired systems using carrier waves combined with telephone network over which the broadcast is continuously available

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

372,125. Distributing music &c. HOLDING INTERNATIONALE LUXEMBOURG, 33, Boulevard Royal, Luxembourg. June 5, 1931, No. 16416. Convention date, June 7, 1930. [Class 40 (iv).] The time for which a subscriber remains connected to a programme circuit coupled to a microphone, wireless receiver, &c. is controlled by clockwork mechanism. Preferably there are associated with the programme circuit pilot lamps and an electric meter to indicate to the speaker how many subscribers are using it and a telephone receiver to enable the quality and volume of the transmission to be supervised. As shown, the operator (e.g. an exchange operator) connects the calling line to the wires 3, 4 and operates her ringing key to energize 12<1> which locks temporarily in series with 15 which energizes a common meter 20. 12<1> energizes a relay 25 which unlocks 12<1>, connects the circuit 3, 4 to the transformer 8 coupled to the programme circuit and in conjunction with a clockwork controlled relay 23 which is energized in series with 25 lights a pilot lamp 30 and so varies the current through a meter 41 graduated in subscribers. After a predetermined time, the clockwork relay drops its armature releasing 25 which disconnects the wires 3, 4 from the transformer. The microphone 10 is coupled to the amplifier feeding the programme circuit by means of a diode valve 31.
GB16416/31A 1930-06-07 1931-06-05 Apparatus for connecting a source of acoustic waves with several listeners for a suitable time Expired GB372125A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR602454X 1930-06-07

Publications (1)

Publication Number Publication Date
GB372125A true GB372125A (en) 1932-05-05

Family

ID=8972011

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16416/31A Expired GB372125A (en) 1930-06-07 1931-06-05 Apparatus for connecting a source of acoustic waves with several listeners for a suitable time

Country Status (5)

Country Link
US (1) US1921961A (en)
AT (1) AT134125B (en)
DE (1) DE602454C (en)
FR (1) FR696858A (en)
GB (1) GB372125A (en)

Also Published As

Publication number Publication date
AT134125B (en) 1933-07-10
FR696858A (en) 1931-01-09
DE602454C (en) 1934-09-10
US1921961A (en) 1933-08-08

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