US1331640A - Sending device for subaqueous-current-line telegraphy - Google Patents

Sending device for subaqueous-current-line telegraphy Download PDF

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Publication number
US1331640A
US1331640A US5043A US504315A US1331640A US 1331640 A US1331640 A US 1331640A US 5043 A US5043 A US 5043A US 504315 A US504315 A US 504315A US 1331640 A US1331640 A US 1331640A
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US
United States
Prior art keywords
current
resistance
sending
circuit
subaqueous
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 - Lifetime
Application number
US5043A
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English (en)
Inventor
Hahnemann Walter
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.)
Signal GmbH
Original Assignee
Signal GmbH
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
Priority to DE1914287117D priority Critical patent/DE287117C/de
Application filed by Signal GmbH filed Critical Signal GmbH
Priority to US5043A priority patent/US1331640A/en
Priority to FR510638A priority patent/FR510638A/fr
Application granted granted Critical
Publication of US1331640A publication Critical patent/US1331640A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
    • H04B13/02—Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy

Definitions

  • This invention relates to a sending device for sub-aqueous current line telegraph stations.
  • t relates more particularly to stations on ships with iron hulls from which current lines are propagated by the sending device through the water.
  • sending devices of this kind the spreading out of the current lines is considerably impaired by the metallic hull of the ship which forms what may be termed a short circuit on account of its low resistance.
  • expedient has been. adopted for sending out alternating currents of a comparatively high frequency from the electrodes into the surrounding water instead of continuous current.
  • the present invention consists in devising means for improving the sending equipment by reducing the aforementioned mternal resistance. This is accomplished by the application of suitable electric tuning or balancing means. and by reducing the resistance of the conducting parts so that the resistance otthe entire circuit of the sending equipment in the ship compares taverably with the resistance of the short circuit formed by the ships hull.
  • the external resistance is represented substantially by the resistance of the ships hull. The maximum efiiciency of transmission is attained when.
  • Figure 1 illustrates an equipment in which condensers are employed.
  • Figs. 2 and 3 show equipments in which transformers are used.
  • Fig. l electrodes E are fixed in any desirable manner by suitable insulating mountings to ships hull A and are connected to a generator W by leads L of very large cross section that include condensers C.
  • Another mode of applying the invention consists in arranging transformers between the electrodes and the hull of the ship the secondary windings of which are formed by means of cable leads between the hull and the electrodes, while the primary windings are connected to the source of current. Thereby longer leads of large cross section are saved.
  • An arrangement of this kind is illustrated in Fig. 3.
  • the electrodes E and the metallic ships hull A are electrically connected by the cable leads L of large cross section.
  • the cables form the secondary windings of transformers T, the primary windings S of which are connected at their one end to a condenser C and at their other end to a generator lV.
  • I claim 1 A system of submarine telegraphy or telephony in which current lines originating at atransmitting station on a ship with a metallic hull are utilized to operate a distant receiving station, said system having an internal or sending circuit comprising an alternating; current generator, spaced submerged sending electrodes carried by the ship and electrically connected to said generator, balancing means 01- reducing the resistance of the electrical equipment to alternating-current and leads of large cross section and low ohmic resistance the resist ance of the Whole internal or sending cir cnit being so small as to be comparable with the resistance of the external circuit; for the purpose specified.
  • system of submarine telegraphy or telephony in which current lines originating at a transmitting station on a ship with metallic hull are utilized to operate a distant receiving station, said system having an internal or scnding circuit comprising an alternating current generator, spaced submerged sending electrodes carried hy the ship and electricall connected. to said orator, balancing means for reducing the IL sist'ance of: the electrical equipment to ternating. current, and leads of large cross section and low ohmic resistance, the res. ance of the Whole internal or sending circuit being so small to be comparable with a the resistance f the external circuit formed hythe Water and the ships hull; for the purpose specified.
  • a system of submarine telcgraphy or telephony in which current lines originating at a transmitting station on shi with metallic hull are utilized to operate a dis taut receiving station, said system having an internal or sending circuit comprising an alternating current generatgu, a transformer with its primary circuit electrically connected to the said generator, balancing means in the primary circuit for reducing the resistance of the electrical equipment to alternating current and a secondary circuit of low ohmic resistance connected to spaced submerged sending electrodes carried by the shi" the resistance of the whole internal circuit being so small-as to be comparable with the resistance of the external circuit formed by the Water and theships hull; for the purpose specified.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
US5043A 1914-02-06 1915-01-29 Sending device for subaqueous-current-line telegraphy Expired - Lifetime US1331640A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE1914287117D DE287117C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1914-02-06 1914-02-06
US5043A US1331640A (en) 1914-02-06 1915-01-29 Sending device for subaqueous-current-line telegraphy
FR510638A FR510638A (fr) 1914-02-06 1915-02-04 Installation de transmission pour la télégraphie sous-marine à bord des navires à corps métallique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE287117T 1914-02-06
US5043A US1331640A (en) 1914-02-06 1915-01-29 Sending device for subaqueous-current-line telegraphy

Publications (1)

Publication Number Publication Date
US1331640A true US1331640A (en) 1920-02-24

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ID=21713847

Family Applications (1)

Application Number Title Priority Date Filing Date
US5043A Expired - Lifetime US1331640A (en) 1914-02-06 1915-01-29 Sending device for subaqueous-current-line telegraphy

Country Status (3)

Country Link
US (1) US1331640A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE287117C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR510638A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3273110A (en) * 1964-03-02 1966-09-13 Douglas Aircraft Co Inc Underwater communication system
US3867710A (en) * 1960-05-02 1975-02-18 Itt Communication system
US3946354A (en) * 1950-12-08 1976-03-23 The United States Of America As Represented By The Secretary Of The Navy Underwater electrical potential detection system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE977779C (de) * 1954-10-19 1970-03-26 Bundesrep Deutschland Fernschreiber zum drahtlosen Unterwasserfernschreiben

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946354A (en) * 1950-12-08 1976-03-23 The United States Of America As Represented By The Secretary Of The Navy Underwater electrical potential detection system
US3867710A (en) * 1960-05-02 1975-02-18 Itt Communication system
US3273110A (en) * 1964-03-02 1966-09-13 Douglas Aircraft Co Inc Underwater communication system

Also Published As

Publication number Publication date
DE287117C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1915-09-10
FR510638A (fr) 1920-12-08

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