US743056A - Wireless telegraphy. - Google Patents

Wireless telegraphy. Download PDF

Info

Publication number
US743056A
US743056A US71346899A US1899713468A US743056A US 743056 A US743056 A US 743056A US 71346899 A US71346899 A US 71346899A US 1899713468 A US1899713468 A US 1899713468A US 743056 A US743056 A US 743056A
Authority
US
United States
Prior art keywords
condensers
waves
wireless telegraphy
wireless
gap
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
US71346899A
Inventor
Ferdinand Braun
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
Priority to US71346899A priority Critical patent/US743056A/en
Application granted granted Critical
Publication of US743056A publication Critical patent/US743056A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
    • H05B41/20—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch
    • H05B41/23—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode
    • H05B41/232—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps

Definitions

  • My invention relates to the transmission of electrical signals without connecting-wires, and comprises the improvements hereinafter described.
  • Figure 1 illustrates a simple form of apparatus.
  • Fig. 2 illustrates an apparatus providing for the use of inductioncoils.
  • the period of oscillation of waves which are produced by discharging-condensers depends on capacity and self-induction, viz: T 2 11 MIKE, in which T denotes the period of oscillation, L the self-induction, and O the capacity.
  • T denotes the period of oscillation
  • L the self-induction
  • O the capacity
  • a plurality of condensers O C O are shown in Fig. 1 connected in series. Each of them is provided with a spark-gap, all elements being of identical dimensions. If the first condenser receives a quantity of electricity E, an equal quantity E is induced on its other coating and E accumulates on the second, rive-that is, all condensers would be charged to exactly the same potential. The total potential, therefore, will be equal to the potential at a single condenser multiplied by the number of condensers, and the same must be true for the energy stored up. Experiments have shown that the discharge first actually takes place if the potential is attained which corresponds to a distanceequal to the sum of the single sparking dis- Serial No. 713,468. (No model.)
  • FIG. 2 A modification of the invention is illustrated in Fig. 2.
  • the condensers (3' (J C are of spherical shape, each of them having its own air-gap a a a
  • the inner coating of one condenser is connected to the outer coating of the next across a coil 1 2 3, Fig. 2, which is asecondary to the primary I II III.
  • the corresponding primaries are connected in series and joined to the terminals of a Ruhmkorfi apparatus. Of course the insertion of these coils will influence the periodicity of oscillations.
  • the other part of the transmitting apparatus and the receiving apparatus, asthe vertical transmitting-wire, the coherer, he, are of the usual kind well known to electricians generally.
  • the invention can be altered in various ways. ranged in parallel instead of being in series connection.
  • the main idea remains the samenamely, to replace by a group of similar apparatus a single apparatus of known kind.
  • the coils may be ar-a said coils being the primaries of transformers, the secondaries being connected to a Ruhmkorfi induction apparatus, substan- I5 tially as described and for the purpose stated.

Landscapes

  • Magnetic Resonance Imaging Apparatus (AREA)

Description

N0. 743,056. V PATENTED NOV. 3. 1903- P. BRAUN. WIRELESS ,TELEGRAPHY.
APPLICATION FILED APR. 18, 1899.
N0 MODEL.
43 Q Q C t e ('1 (2 ([fiedt Inventor @M a W IHi News PETERS ch. mo'muwa. WASHINGTON. n. c.
a... 74am.
Patented November 3, 1903 PATENT ()Fl llit FERDINAND BRAUN, or STRASSBURG, GERMANY.
WIRELESS 'l'ELEG RA PHY.
SPECIFICATION forming part of Letters Patent No. 743,056, dated November 3, 1903.
Application filed April 18,1899.
To aZZ whom; it may concern:
Be it known that I, FERDINAND BRAUN, a subject of the German Emperor, and a resident of Strassburg, Alsace, German Empire, have invented a new and useful Improvement in Wireless Telegraphy, of which the following is a specification.
My invention relates to the transmission of electrical signals without connecting-wires, and comprises the improvements hereinafter described.
In the accompanying drawingsflvhich illustrate diagrammatically apparatus embodying the invention, Figure 1 illustrates a simple form of apparatus. Fig. 2 illustrates an apparatus providing for the use of inductioncoils.
The period of oscillation of waves which are produced by discharging-condensers depends on capacity and self-induction, viz: T 2 11 MIKE, in which T denotes the period of oscillation, L the self-induction, and O the capacity. Theoretically, therefore, the energy of the Waves should be able to be increased by raising the potential. Experience, however, has shown that there is a limit to the voltage which may be used at the ter-' minals of a single spark-gap, the fact being that a certain critical value of distance is not to be exceeded,because above this value the discharge is no more of oscillatory nature. In order to increase the energy to be transmitted without disturbing the fre-,
quency, the arrangement shown in the drawings is used.
A plurality of condensers O C O are shown in Fig. 1 connected in series. Each of them is provided with a spark-gap, all elements being of identical dimensions. If the first condenser receives a quantity of electricity E, an equal quantity E is induced on its other coating and E accumulates on the second, rive-that is, all condensers would be charged to exactly the same potential. The total potential, therefore, will be equal to the potential at a single condenser multiplied by the number of condensers, and the same must be true for the energy stored up. Experiments have shown that the discharge first actually takes place if the potential is attained which corresponds to a distanceequal to the sum of the single sparking dis- Serial No. 713,468. (No model.)
tances. Although one would be inclined to assume that as each condenser has its own circuit three separate trains of waves would be set up. This is not so. The waves produced nearly, if not exactly, at the same time will'either coincide or interfere with each other. In the first case the amplitude of the electric impulse will be simply multiplied by the number of condensers. In the case of interference the maximum amplitude of'the wave composed by its components will come approximately to the same value.
A modification of the invention is illustrated in Fig. 2.
The condensers (3' (J C are of spherical shape, each of them having its own air-gap a a a The inner coating of one condenser is connected to the outer coating of the next across a coil 1 2 3, Fig. 2, which is asecondary to the primary I II III. The corresponding primaries are connected in series and joined to the terminals of a Ruhmkorfi apparatus. Of course the insertion of these coils will influence the periodicity of oscillations.
The other part of the transmitting apparatus and the receiving apparatus, asthe vertical transmitting-wire, the coherer, he, are of the usual kind well known to electricians generally. Y
The invention, can be altered in various ways. ranged in parallel instead of being in series connection. The main idea, however, remains the samenamely, to replace by a group of similar apparatus a single apparatus of known kind.
I do not generally claim the use of multiplespark-gaps for producing electric waves for wireless telegraphy, as such devices are known; but- What I claim, and desire to secure by Letters Patent in the United States, is
1. In a system of transmitting electrical signals by means of electrical waves, the combination with a plurality of identical condensers connected in series, of a spark-gap provided for each of said condensers, substantially as described and for the purpose stated.
2. In a system of transmitting electrical signals by means of electrical waves, the combination with a plurality of identical condensers connected in series, of a spark-gap pro- The coils, for instance, may be ar-a said coils being the primaries of transformers, the secondaries being connected to a Ruhmkorfi induction apparatus, substan- I5 tially as described and for the purpose stated.
In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.
FERDINAND BRAUN.
Witnesses:
MAX ADLER, FRITZ NIESS.
US71346899A 1899-04-18 1899-04-18 Wireless telegraphy. Expired - Lifetime US743056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US71346899A US743056A (en) 1899-04-18 1899-04-18 Wireless telegraphy.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71346899A US743056A (en) 1899-04-18 1899-04-18 Wireless telegraphy.

Publications (1)

Publication Number Publication Date
US743056A true US743056A (en) 1903-11-03

Family

ID=2811553

Family Applications (1)

Application Number Title Priority Date Filing Date
US71346899A Expired - Lifetime US743056A (en) 1899-04-18 1899-04-18 Wireless telegraphy.

Country Status (1)

Country Link
US (1) US743056A (en)

Similar Documents

Publication Publication Date Title
US2414541A (en) Electronic frequency multiplier
US1955093A (en) Oscillation circuit for electric waves
US743056A (en) Wireless telegraphy.
US1389255A (en) High-frequency electrical oscillation apparatus
US1356763A (en) Oscillation-generator
US3356931A (en) High voltage transformer
US768004A (en) Space telegraphy.
US1986599A (en) Frequency stabilizing means
US1158123A (en) Apparatus for generating and receiving electromagnetic waves.
US946167A (en) Space telegraphy.
US767984A (en) Space telegraphy.
US876165A (en) Wireless telegraph transmitting system.
US1740969A (en) Duplex transmission system
US1531633A (en) Oscillation generator
US1507016A (en) Radiosignaling system
US767989A (en) Space telegraphy.
US767976A (en) Space telegraphy.
US956165A (en) Electrical space communication.
US1182003A (en) Signaling by electromagnetic waves.
US1153717A (en) Means for generating and radiating electromagnetic waves.
US1639045A (en) Harmonic frequency producer
US1308514A (en) von arco and a
US1359310A (en) Detector-condenser
US1626856A (en) Circuit arrangement for multiplex communication
US785276A (en) System of wireless telegraphy with tuned microphone-receivers.