US897278A - Wireless telegraphy. - Google Patents

Wireless telegraphy. Download PDF

Info

Publication number
US897278A
US897278A US33773306A US1906337733A US897278A US 897278 A US897278 A US 897278A US 33773306 A US33773306 A US 33773306A US 1906337733 A US1906337733 A US 1906337733A US 897278 A US897278 A US 897278A
Authority
US
United States
Prior art keywords
primary
wireless telegraphy
receiver
circuit
coupling
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
US33773306A
Inventor
Reginald A Fessenden
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 US33773306A priority Critical patent/US897278A/en
Application granted granted Critical
Publication of US897278A publication Critical patent/US897278A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line

Definitions

  • the invention especially relates to means for cutting out disturbances as hereinafter more fully described and claimed.
  • the receiver is placed in a secondary circuit oper atively connected to the aerial and the primary circuit is so arranged as to act as a shield to the secondary circuit against electrostatic disturbances.
  • 1 is an aerial
  • 2 a variable inductance
  • 3, 3 is the primary of the inductive circuit, grounded at 4.
  • 6 and 16 are variable inductances, 7, 10 and 11, 14, are capacities preferably variable.
  • 17 is a receiver, preferably a liquid barretter, 19 a receiving instrument preferably a telephone and 18 a potentiometer.
  • the primary 3 will act to shield the secondary 5 and the circuits connected thereto from electrostatic disturbances.
  • an inductive coupling comprising a primary, and a secondary and a receiver in circuit therewith,-all inclosed within the primary of the coupling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Near-Field Transmission Systems (AREA)

Description

No. 897,278. PATENTED SEPT. l, 1908. E. A. ELSSENDENh WIRELESS TELEGRAPHY.
APPLICATION FILED 0CT.6, 1906.
0000000OOOOOOOOOGOOOOGOOOOOO000600606 :anonnoocwawoanonoan nnaam,ponuooooawnnonuncnnona amanogawa I OQOOOUOOOOOCOOOOOGOOGQ00000000OOOQQQSG iiNiTnn sTaTns PATENT omiten.
REGINALD A. FESSENDEN, OF WASHINGTON, DISTRICT OF COLUMBIA.
WIRE LE SS TE LE GRAPI-IY.
To all whom it lmay concern.'
Be it known that I, REGINALD A. FnssEN- DEN, a citizen of the United States, residing at 1737 Riggs Place, I/Vashington, in the District of Columbia, have invented certain new and useful Improvements in Wireless Telegraphy, of which the following is a specification.
The invention especially relates to means for cutting out disturbances as hereinafter more fully described and claimed.
The accompanying drawing forming a part of this speciiication shows in diagram and partial section a desirable form of apparatus for carrying out the invention.
In the practice of my invention the receiver is placed in a secondary circuit oper atively connected to the aerial and the primary circuit is so arranged as to act as a shield to the secondary circuit against electrostatic disturbances.
In the ligure, 1 is an aerial, 2 a variable inductance, 3, 3, 3 is the primary of the inductive circuit, grounded at 4.
5, 5, 5 is the secondary of the inductive circuit.
6 and 16 are variable inductances, 7, 10 and 11, 14, are capacities preferably variable.
17 is a receiver, preferably a liquid barretter, 19 a receiving instrument preferably a telephone and 18 a potentiometer.
8 and 9 are the primaries and 12 and 13 the secondaries of an interference preventer,
Specification of Letters Patent.
Application filed October 6, 1906.
Patented Sept. 1, 1908.
Serial Nvo. 337,733.
of my split circuit type, wherein undesired impulses are by proper tuning caused to divide equally between two circuits, so that their effects neutralize each other. But this not being part of the present invention need not be further described.
In the operation of my invention the primary 3 will act to shield the secondary 5 and the circuits connected thereto from electrostatic disturbances.
That I claim is:
1. In signaling apparatus an inductive coupling, and a receiver placed in the secondary of the coupling, and within influence of the primary so that the primary acts to shield it from disturbing influences.
2. In signaling apparatus an inductive coupling, and a receiver connected in the secondary of said coupling, the receiver being placed within the primary and being protected thereby from disturbing influences.
3. In receiving apparatus for wireless telegraphy an inductive coupling comprising a primary, and a secondary and a receiver in circuit therewith,-all inclosed within the primary of the coupling.
Signed at Brant Rock in the county of Plymouth and State of Mass. this 4th day of October A. D. 1906.
BEGIN ALD A. FESSENDEN.
Witnesses:
.Inssrn E. BENT,
ADELEINE WOLENER.
US33773306A 1906-10-06 1906-10-06 Wireless telegraphy. Expired - Lifetime US897278A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US33773306A US897278A (en) 1906-10-06 1906-10-06 Wireless telegraphy.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US33773306A US897278A (en) 1906-10-06 1906-10-06 Wireless telegraphy.

Publications (1)

Publication Number Publication Date
US897278A true US897278A (en) 1908-09-01

Family

ID=2965705

Family Applications (1)

Application Number Title Priority Date Filing Date
US33773306A Expired - Lifetime US897278A (en) 1906-10-06 1906-10-06 Wireless telegraphy.

Country Status (1)

Country Link
US (1) US897278A (en)

Similar Documents

Publication Publication Date Title
US723188A (en) Method of signaling.
GB515739A (en) Improvements in electrical frequency selective apparatus
US897278A (en) Wireless telegraphy.
US2005084A (en) Transmission system
US901649A (en) Space telegraphy.
US766451A (en) Telephonic transmission.
US1014002A (en) Apparatus for wireless signaling.
US717513A (en) Method of relaying space-telegraph signals.
US1245266A (en) Radio telgraphy and telephony receiver.
US717509A (en) Apparatus for relaying space-telegraph signals.
US1829523A (en) Means for preventing interference
US965363A (en) Shoe-cleaning device.
US945606A (en) Savings-bank.
US1185879A (en) Telephone system.
US759216A (en) Wireless signaling apparatus.
US884076A (en) Space telegraphy.
GB191110043A (en) Telegraph Transmitters.
US802423A (en) Space telegraphy.
US802429A (en) Space telegraphy.
US1731243A (en) Signaling system
US1716908A (en) Duplex system of telephony
US802420A (en) Space telegraphy.
US863230A (en) Telephone repeater-circuit.
US932820A (en) Transmitting apparatus.
US1366830A (en) Frequency-selecting receiving-circuit