GB165645A - Improvements in sound receiving or detecting apparatus, particularly for subaqueous use - Google Patents

Improvements in sound receiving or detecting apparatus, particularly for subaqueous use

Info

Publication number
GB165645A
GB165645A GB1544920A GB1544920A GB165645A GB 165645 A GB165645 A GB 165645A GB 1544920 A GB1544920 A GB 1544920A GB 1544920 A GB1544920 A GB 1544920A GB 165645 A GB165645 A GB 165645A
Authority
GB
United Kingdom
Prior art keywords
sound
box
diaphragm
electrodes
electrode
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
Application number
GB1544920A
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 DE1920345546D priority Critical patent/DE345546C/en
Priority to GB1544920A priority patent/GB165645A/en
Publication of GB165645A publication Critical patent/GB165645A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

165,645. Walker, W. L. June 8, 1920. Detecting and locating subaqueous sounds. -Apparatus for detecting subaqueous sounds comprises two electrodes of dissimilar metals such as zinc and copper, or steel and Monel metal, immersed in a liquid, for example sea-water, so that a difference of potential due to galvanic action occurs, the electrodes being arranged so that the distance between them is varied by the sound waves. One electrode 13 projects through a stuffing-box 12 in the wall of a sound-box 1, the other electrode 8 being secured to a movement - magnifying lever 6 pivoted to a bracket 7, the other end of the lever being attached to a diaphragm 2 on which the sound-waves impinge, and forming a closure to the box 1. Leads from the electrode pass upwards through a plug 26 and tube 19 to the input terminals of a three-electrcde amplifier 27, the plate circuit of which includes an indicator such as an oscilligraph, a telephone receiver 38, or ammeter 37. The apparatus is used with the sound-box 1 and electrodes submerged, and to equalize the pressure on opposite sides of the diaphragm a downwardly directed tube 24 is provided with its lower end open to the water. By means of a switch 43 the apparatus can be used either with or without a battery 41 included in circuit with the detector. The apparatus is directional, giving maximum response with the diaphragm 2 normal to the direction of sound propagation.
GB1544920A 1920-06-08 1920-06-08 Improvements in sound receiving or detecting apparatus, particularly for subaqueous use Expired GB165645A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1920345546D DE345546C (en) 1920-06-08 1920-06-08 Sound receiver, especially for underwater sound signals
GB1544920A GB165645A (en) 1920-06-08 1920-06-08 Improvements in sound receiving or detecting apparatus, particularly for subaqueous use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1544920A GB165645A (en) 1920-06-08 1920-06-08 Improvements in sound receiving or detecting apparatus, particularly for subaqueous use

Publications (1)

Publication Number Publication Date
GB165645A true GB165645A (en) 1921-07-07

Family

ID=10059330

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1544920A Expired GB165645A (en) 1920-06-08 1920-06-08 Improvements in sound receiving or detecting apparatus, particularly for subaqueous use

Country Status (2)

Country Link
DE (1) DE345546C (en)
GB (1) GB165645A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1076413B (en) * 1954-06-02 1960-02-25 Fruengel Frank Dr Ing Impact sound source

Also Published As

Publication number Publication date
DE345546C (en) 1921-12-14

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