GB202622A - Improvements in electric multiplex communication - Google Patents

Improvements in electric multiplex communication

Info

Publication number
GB202622A
GB202622A GB18316/23A GB1831623A GB202622A GB 202622 A GB202622 A GB 202622A GB 18316/23 A GB18316/23 A GB 18316/23A GB 1831623 A GB1831623 A GB 1831623A GB 202622 A GB202622 A GB 202622A
Authority
GB
United Kingdom
Prior art keywords
moving
electromagnets
electromagnet
wires
pulley
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
GB18316/23A
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 GB202622A publication Critical patent/GB202622A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/662—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a time/frequency relationship, e.g. time compression or expansion

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Toys (AREA)

Abstract

202,622. Oguti, T. Aug. 17, 1922, [Convention date]. Addition to 190,442. Multiplex signalling.-In a system of multiplex telephony or telegraphy according to the parent Specification, electromagnets of the unipolar type are employed and the moving electromagnets are caused to rotate along and act upon the circular portions of the moving steel wires. Fig. 1 shows one of the wires W4 carried around a series of grooved rollers D4, mounted on a frame A, and around the pulley D<1>4, and acted upon by a stationary electromagnet N, coupled to a telephone transmitter, by a moving electromagnet M4, coupled to the transmitter, and by record eliminating magnet Q. Electromagnet P and receiver R are used for reception. In a modification, the wires are replaced by an endless steel belt W as shown in Figs. 5, 6, M1 - - M4 being the moving electromagnets. Auxiliary pulleys D11 may be provided to cause a greater portion of the belt to lie along the periphery of the pulley D and co-operate with the moving electromagnets.
GB18316/23A 1921-12-15 1923-07-16 Improvements in electric multiplex communication Expired GB202622A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP190442X 1921-12-15
JP202622X 1922-08-17

Publications (1)

Publication Number Publication Date
GB202622A true GB202622A (en) 1924-01-31

Family

ID=26355838

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18316/23A Expired GB202622A (en) 1921-12-15 1923-07-16 Improvements in electric multiplex communication

Country Status (1)

Country Link
GB (1) GB202622A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE940049C (en) * 1950-02-20 1956-03-08 Normalzeit G M B H Device for intermittently successive transmission of several simultaneous messages over a common channel while widening the frequency band
DE970915C (en) * 1953-11-15 1958-11-13 Telefonbau & Normalzeit Gmbh Arrangement for the transmission of messages while reducing the frequency bandwidth
DE1043403B (en) * 1955-07-23 1958-11-13 Boelkow Entwicklungen Kg Device to prevent the eavesdropping of communications by unauthorized persons
DE1043404B (en) * 1955-07-23 1958-11-13 Boelkow Entwicklungen Kg Device to prevent the eavesdropping of communications by unauthorized persons
US4184210A (en) * 1958-09-04 1980-01-15 Julius Hagemann Sonic echo scanning and facsimile recording of water submerged surfaces

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE940049C (en) * 1950-02-20 1956-03-08 Normalzeit G M B H Device for intermittently successive transmission of several simultaneous messages over a common channel while widening the frequency band
DE970915C (en) * 1953-11-15 1958-11-13 Telefonbau & Normalzeit Gmbh Arrangement for the transmission of messages while reducing the frequency bandwidth
DE1043403B (en) * 1955-07-23 1958-11-13 Boelkow Entwicklungen Kg Device to prevent the eavesdropping of communications by unauthorized persons
DE1043404B (en) * 1955-07-23 1958-11-13 Boelkow Entwicklungen Kg Device to prevent the eavesdropping of communications by unauthorized persons
US4184210A (en) * 1958-09-04 1980-01-15 Julius Hagemann Sonic echo scanning and facsimile recording of water submerged surfaces

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