GB129674A - Improvements in Means for Detecting Sounds. - Google Patents

Improvements in Means for Detecting Sounds.

Info

Publication number
GB129674A
GB129674A GB1722217A GB1722217A GB129674A GB 129674 A GB129674 A GB 129674A GB 1722217 A GB1722217 A GB 1722217A GB 1722217 A GB1722217 A GB 1722217A GB 129674 A GB129674 A GB 129674A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
carried
contact disk
tongue
metal tongue
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
GB1722217A
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.)
Head Wrightson and Co Ltd
Original Assignee
Head Wrightson and Co Ltd
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 Head Wrightson and Co Ltd filed Critical Head Wrightson and Co Ltd
Priority to GB1722217A priority Critical patent/GB129674A/en
Publication of GB129674A publication Critical patent/GB129674A/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

Abstract

129,674. Wrightson, T. G., Ringquist, J. M., and Head, Wrightson, &. Co. Nov. 22, 1917. Microphones a n d variable - resistance transmitters.-A device for detecting sounds, particularly for subaqueous use, comprises a felt or like ring containing carbon granules carried by one end of a metal tongue and pressed against a contact disk supported by a diaphragm or by a rod projecting from a diaphragm. The felt ring f, Fig. 1, containing granules, is carried by a metal tongue d' and caused to bear, with a pressure adjustable by a set-screw k , against a contact disk c carried by a diaphragm a. In a modification, Fig. 2, the tongue d is carried by a diaphragm a<2> and the contact disk c by a rod j projecting from a diaphragm a<1>. In a further modification, three mutually perpendicular diaphragms are used, two of which have rods jointly supporting the contact disk, the metal tongue being supported by the third diaphragm.
GB1722217A 1917-11-22 1917-11-22 Improvements in Means for Detecting Sounds. Expired GB129674A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1722217A GB129674A (en) 1917-11-22 1917-11-22 Improvements in Means for Detecting Sounds.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1722217A GB129674A (en) 1917-11-22 1917-11-22 Improvements in Means for Detecting Sounds.

Publications (1)

Publication Number Publication Date
GB129674A true GB129674A (en) 1919-07-24

Family

ID=32347477

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1722217A Expired GB129674A (en) 1917-11-22 1917-11-22 Improvements in Means for Detecting Sounds.

Country Status (1)

Country Link
GB (1) GB129674A (en)

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