GB302638A - Improvements in or relating to telephone circuits - Google Patents

Improvements in or relating to telephone circuits

Info

Publication number
GB302638A
GB302638A GB2467027A GB2467027A GB302638A GB 302638 A GB302638 A GB 302638A GB 2467027 A GB2467027 A GB 2467027A GB 2467027 A GB2467027 A GB 2467027A GB 302638 A GB302638 A GB 302638A
Authority
GB
United Kingdom
Prior art keywords
signals
transmitter
receiver
relating
systems
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
GB2467027A
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.)
PATRICK BERNARD HEALEY
Telephone Manufacturing Co Ltd
Original Assignee
PATRICK BERNARD HEALEY
Telephone Manufacturing Co Ltd
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 PATRICK BERNARD HEALEY, Telephone Manufacturing Co Ltd filed Critical PATRICK BERNARD HEALEY
Priority to GB2467027A priority Critical patent/GB302638A/en
Publication of GB302638A publication Critical patent/GB302638A/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
    • H04M9/001—Two-way communication systems between a limited number of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

302,638. Healey, P. B., and Telephone Manufacturing Co., Ltd. Sept. 19, 1927. Direct-call systems; systems for transmitting music &c.-A simple telephone circuit comprising a receiver, a transmitter and a battery in series is coupled to an external source of signals (such as wireless signals) by means of a capacity as in Fig. 1. In the case of a duplicated telephone circuit, when it is desired to render audible in each receiver the signals from the transmitter at the same station, as for example in aeroplanes, the circuits may be coupled together in this manner, as in Fig. 2. he arra.ngement of Fig. 4 shows these effects combined, The Provisional Specification refers to the use of an inductive coupling. Specification 137,367 is referred to.
GB2467027A 1927-09-19 1927-09-19 Improvements in or relating to telephone circuits Expired GB302638A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2467027A GB302638A (en) 1927-09-19 1927-09-19 Improvements in or relating to telephone circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2467027A GB302638A (en) 1927-09-19 1927-09-19 Improvements in or relating to telephone circuits

Publications (1)

Publication Number Publication Date
GB302638A true GB302638A (en) 1928-12-19

Family

ID=10215405

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2467027A Expired GB302638A (en) 1927-09-19 1927-09-19 Improvements in or relating to telephone circuits

Country Status (1)

Country Link
GB (1) GB302638A (en)

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