US717511A - Method of tuning vertical wire oscillators. - Google Patents

Method of tuning vertical wire oscillators. Download PDF

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Publication number
US717511A
US717511A US4439001A US1901044390A US717511A US 717511 A US717511 A US 717511A US 4439001 A US4439001 A US 4439001A US 1901044390 A US1901044390 A US 1901044390A US 717511 A US717511 A US 717511A
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United States
Prior art keywords
oscillators
vertical wire
tuning
wire
tuning vertical
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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
US4439001A
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 US4439001A priority Critical patent/US717511A/en
Application granted granted Critical
Publication of US717511A publication Critical patent/US717511A/en
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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 telegraphy or of signaling electrically between stations not connected by a conducting-wire, and more particularly to the elevated-conductor system of spacetelegraphy or that system in which the signals are transmitted by means of the 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 inertia by a suitable capacity; This I do by surrounding the conductor with a sheath formed of a medium of greater permeability than the air, but not conductively connected with the conductor, and by balancing the increased inductance thereby obtained by a suitable capacity.
  • O is a central copper core.
  • 'L' is a layer of suitable insulation.
  • M is a circumferentially continuous but longitudinally discontinuous paramagnetic sheath.
  • S is a conducting-sphere
  • G is a ground connection
  • the free period of such a system will be approximately determined by the formula 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.
  • 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- The method of tuninga vertical wire oscillater which consists in increasing its natural inductance or natural electromagnetic inertia by surrounding the conductor with a sheath formed of a medium of greater permeability than the air, but not conductively connected with the conductor, and balancing the increased inductance thereby obtained by a suitable capacity.

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  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Description

Patented Dec. 30, I902.
J. s. stoma. METHOD OF TUNING VERTICAL WIRE OSGILLATOBS.
(Application filed Jan. 23, 1901.)
(No Model.)
1TH E E 5 E 5;
UNITE STATES PATENT OFFICE.
JOHN STONE STONE, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO LOUIS E. WHIOHER, ALEXANDER P. BROWNE, AND BRAINERD T. J UDKINS,
TRUSTEES.
METHODOF TUNING VERTICAL WIRE OSCILLATORS.
SPECIFICATION formingpart of Letters Patent No. 717,511, dated December 30, 1902.
Application filed January 28, 1901. Serial No. 44,390. (No model.)
T0 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 Massachusetts, have invented certain new and useful Improvements in Methods of Tuning Vertical Wire Oscillators, of which the following is a specification.
The invention relates to the art of space telegraphy or of signaling electrically between stations not connected by a conducting-wire, and more particularly to the elevated-conductor system of spacetelegraphy or that system in which the signals are transmitted by means of the 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 inertia by a suitable capacity; This I do by surrounding the conductor with a sheath formed of a medium of greater permeability than the air, but not conductively connected with the conductor, and by balancing the increased inductance thereby obtained by a suitable capacity. A means of accomplishing this end is illustrated in the figure, in which O is a central copper core.
'L' is a layer of suitable insulation.
M is a circumferentially continuous but longitudinally discontinuous paramagnetic sheath.
1; 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 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 O by first insulating it and then winding on a layer of iron wire after the man= nor 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- The method of tuninga vertical wire oscillater which consists in increasing its natural inductance or natural electromagnetic inertia by surrounding the conductor with a sheath formed of a medium of greater permeability than the air, but not conductively connected with the conductor, and balancing the increased inductance thereby obtained by a suitable capacity.
JOHN STONE STONE.
In presence of- ALEX. P. BROWNE, ELLEN B. TOMLINSON.
US4439001A 1901-01-23 1901-01-23 Method of tuning vertical wire oscillators. Expired - Lifetime US717511A (en)

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US4439001A US717511A (en) 1901-01-23 1901-01-23 Method of tuning vertical wire oscillators.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071771A (en) * 1959-10-09 1963-01-01 Andrew Corp Suppressed-radiation antenna
US3372395A (en) * 1963-11-13 1968-03-05 Gen Electric Vlf antenna

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071771A (en) * 1959-10-09 1963-01-01 Andrew Corp Suppressed-radiation antenna
US3372395A (en) * 1963-11-13 1968-03-05 Gen Electric Vlf antenna

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