US717512A - Tuned electric oscillator. - Google Patents

Tuned electric oscillator. Download PDF

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Publication number
US717512A
US717512A US4439101A US1901044391A US717512A US 717512 A US717512 A US 717512A US 4439101 A US4439101 A US 4439101A US 1901044391 A US1901044391 A US 1901044391A US 717512 A US717512 A US 717512A
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United States
Prior art keywords
electric oscillator
wire
tuned electric
tuned
stone
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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
US4439101A
Inventor
John Stone Stone
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.)
ALEXANDER P BROWNE
BRAINERD T JUDKINS
LOUIS E WHICHER
Original Assignee
ALEXANDER P BROWNE
BRAINERD T JUDKINS
LOUIS E WHICHER
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 ALEXANDER P BROWNE, BRAINERD T JUDKINS, LOUIS E WHICHER filed Critical ALEXANDER P BROWNE
Priority to US4439101A priority Critical patent/US717512A/en
Application granted granted Critical
Publication of US717512A publication Critical patent/US717512A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
    • H01Q7/08—Ferrite rod or like elongated core

Definitions

  • the invention relates to the art of space [0 telegraphy or of signaling electrically between stations not connected by a conducting- Wire, and more particularly to the elevatedconductor system of space telegraphy or that system in which the signals are transmitted by means of electromagnetic waves which emanate from elevated conductors.
  • the object of the present invention is to provide in an elevated-conductor system of space telegraphy means for definitely tuning the elevated conductors both at the transmitting and receiving stations to any desired periodicity, and this is accomplished by distributing the electromagnetic inertia along the wire and balancing said electromagnetic in- 2 5 ertia by a suitable capacity.
  • 0 is a central copper core
  • 41 is a layer of suitable insulation
  • M is a circumferentially-continuous but longitudinally-discontinuous paramagnetic sheath
  • 6 is another layer of insulation
  • S is a conducting-sphere
  • G is a ground connection.
  • O is the electrostatic capacity of the sphere S, measured to earth
  • L is the inductance of the conductor connecting S with the earth.
  • the distributed electromagnetic inertia may also be conveniently imparted to the Wire C by first insulating it and then Winding on a layer of iron wire after the manner in which pianoforte-strings are loaded; but in every case care must be taken to produce longitudinal electrical discontinuity in the iron sheathing or wrapping at frequent intervals.
  • an insulating-coat thoroughly impregnated with iron-dust may be used, and, in fact, there are a great variety of ways of realizing the desired result; but
  • a vertical oscillator adapted to transmit and receive free electromagnetic waves, having interiorly a Wire surrounded by insulation,and a 1ongitudinally-discontinuous paramagnetic sheath, inclosing said Wire.

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  • Geophysics And Detection Of Objects (AREA)

Description

N0. 7|7,5I2. Patented'Decr30, I902.
J. 8. STONE. TUNED ELECTRIC USCILLATUR.
(Application filed Tan. 23, 1901.)
' (No Model.)
WITHE 551:5;
UNITED STATES PATENT OFFICE.
JOHN STONE STONE, OF BOSTON, MASSACHUSETTSIASSIGNOR TO LOUIS E. VVHIOHER, ALEXANDER P. BROVVNE, AND BRAINERD T. JUDKINS,
TRUSTEES.
TUNED ELECTRIC OSCILLATOR.
SPECIFICATION formingpart of Letters Patent No. 717,5 12, dated December 30, 1902.
Application filed January 23, 1901. Serial No. 44,391. (No model.)
T at], whom it may concern:
Be it known that I, JOHN STONE STONE, a citizen of'the United States, residing at Boston, in the county of Suffolk and State of Mass sachusetts, have invented certain new and useful Improvements in Tuned Electric Oscillators, of which the following is a specification.
The invention relates to the art of space [0 telegraphy or of signaling electrically between stations not connected by a conducting- Wire, and more particularly to the elevatedconductor system of space telegraphy or that system in which the signals are transmitted by means of electromagnetic waves which emanate from elevated conductors.
The object of the present invention is to provide in an elevated-conductor system of space telegraphy means for definitely tuning the elevated conductors both at the transmitting and receiving stations to any desired periodicity, and this is accomplished by distributing the electromagnetic inertia along the wire and balancing said electromagnetic in- 2 5 ertia by a suitable capacity.
A means of accomplishing this end is illustrated in the figure, in which 0 is a central copper core, 41 is a layer of suitable insulation, M is a circumferentially-continuous but longitudinally-discontinuous paramagnetic sheath, 6 is another layer of insulation, S is a conducting-sphere, and G is a ground connection.
The free period of such a system will be approximately determined by the formula T 2 71 CL,
where O is the electrostatic capacity of the sphere S, measured to earth, and L is the inductance of the conductor connecting S with the earth. The distributed electromagnetic inertia may also be conveniently imparted to the Wire C by first insulating it and then Winding on a layer of iron wire after the manner in which pianoforte-strings are loaded; but in every case care must be taken to produce longitudinal electrical discontinuity in the iron sheathing or wrapping at frequent intervals. Again, an insulating-coat thoroughly impregnated with iron-dust may be used, and, in fact, there are a great variety of ways of realizing the desired result; but
What I claim as my invention is- 1. In an electric oscillator the combination of a conducting-wire surrounded by insulation, a longitudinally discontinuous paramagnetic sheath inclosing said conductor and a capacity.
2. A vertical oscillator adapted to transmit and receive free electromagnetic waves, having interiorly a Wire surrounded by insulation,and a 1ongitudinally-discontinuous paramagnetic sheath, inclosing said Wire.
JOHN STONE STONE.
In presence of ALEX. P. BROWNE, ELLEN B. ToMLINsoN.
US4439101A 1901-01-23 1901-01-23 Tuned electric oscillator. Expired - Lifetime US717512A (en)

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US4439101A US717512A (en) 1901-01-23 1901-01-23 Tuned electric oscillator.

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US717512A true US717512A (en) 1902-12-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372395A (en) * 1963-11-13 1968-03-05 Gen Electric Vlf antenna

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372395A (en) * 1963-11-13 1968-03-05 Gen Electric Vlf antenna

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