GB184774A - Improvements in long telegraph cables - Google Patents

Improvements in long telegraph cables

Info

Publication number
GB184774A
GB184774A GB9997/22A GB999722A GB184774A GB 184774 A GB184774 A GB 184774A GB 9997/22 A GB9997/22 A GB 9997/22A GB 999722 A GB999722 A GB 999722A GB 184774 A GB184774 A GB 184774A
Authority
GB
United Kingdom
Prior art keywords
adjustable resistance
condenser
earth
series
resistance
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
GB9997/22A
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
Publication of GB184774A publication Critical patent/GB184774A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/12—Arrangements for exhibiting specific transmission characteristics
    • H01B11/14—Continuously inductively loaded cables, e.g. Krarup cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/143—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of wires

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Communication Cables (AREA)

Abstract

184,774. Western Electric Co., Ltd., (Assignees of Buckley, O. E.). Aug. 16, 1921, [Convention date]. Systems using code elements distinguished by polarity of current; restoring or modifying imperfect signals.-The Specification as open to inspection under Sect. 91 (3) (a) comprises a circuitsystem for a longitudinal conductor which is designed to reduce the distortion due to unequal attenuation and phase-shift of the different frequency-components. The cable 6 is connected to earth through the transmitting apparatus 7 and the condenser 8, and at the receiving end is connected to earth through two parallel branches, one of which comprises a large inductance 9 in series with an adjustable resistance 10, and the other comprises the condenser 11 in parallel with the adjustable resistance 12 and in series with the inductance coil 13 and the adjustable resistance 14. The latter are shunted by a potentiometer resistance 15, the taps from which complete the input grid-circuit of the vacuum-tube amplifier 16, the output circuit of which comprises the recording instrument 17, preferably a string oscillograph recording photographically on sensitized paper. This subject-matter does not appear in the Specification as accepted.
GB9997/22A 1921-08-16 1922-04-07 Improvements in long telegraph cables Expired GB184774A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US492725A US1586874A (en) 1921-08-16 1921-08-16 Long submarine telegraph cable for operation at high speed

Publications (1)

Publication Number Publication Date
GB184774A true GB184774A (en) 1923-08-07

Family

ID=23957393

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9997/22A Expired GB184774A (en) 1921-08-16 1922-04-07 Improvements in long telegraph cables

Country Status (4)

Country Link
US (1) US1586874A (en)
DE (1) DE455568C (en)
FR (1) FR26495E (en)
GB (1) GB184774A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882441A (en) * 1974-04-24 1975-05-06 Honeywell Inc Response negative magnetostrictive wire for an intruder detector
FR2954397B1 (en) * 2009-12-22 2012-05-04 Geoservices Equipements INTERVENTION DEVICE IN A FLUID OPERATING WELL IN THE BASEMENT, AND ASSOCIATED INTERVENTION ASSEMBLY.

Also Published As

Publication number Publication date
DE455568C (en) 1928-02-04
US1586874A (en) 1926-06-01
FR26495E (en) 1924-01-03

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