GB192725A - Sound signalling systems - Google Patents

Sound signalling systems

Info

Publication number
GB192725A
GB192725A GB2326021A GB2326021A GB192725A GB 192725 A GB192725 A GB 192725A GB 2326021 A GB2326021 A GB 2326021A GB 2326021 A GB2326021 A GB 2326021A GB 192725 A GB192725 A GB 192725A
Authority
GB
United Kingdom
Prior art keywords
sound
producer
signalling
operated
struck
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
GB2326021A
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.)
Signal GmbH
Original Assignee
Signal GmbH
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 Signal GmbH filed Critical Signal GmbH
Priority to GB2326021A priority Critical patent/GB192725A/en
Publication of GB192725A publication Critical patent/GB192725A/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)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

192,725. Baron, H., (Signal Ges.). Sept. 1,1921. Bell and gong signals; subaqueous audible signals.-An electrically operated sound-producer without moved striking parts is operated by aperiodic current impulses or by damped electrical oscillations to give sounds resembling the strokes of a bell. The arrangement is particularly intended for subaqueous sound signalling controlled from a distance, but is applicable to signalling in air. In one arrangement, a tuning fork 5 is struck by a pneumatic hammer 6, the sound affecting a microphone 1 to produce corresponding current variations in the windings of a sound producer 3. In another form, two electromagnetic devices similar to 3 are connected in series, the diaphragm of one being struck by a pneumatic hammer to cause the other to emit a corresponding sound. In these types of apparatus, the oscillation producer 5 &c. may serve also for signalling through the air. In further modifications, the device 3 is operated by discharging a condenser through its coils, and by electric oscillations due to spark-gap discharges, make and break devices being used to control the number and period of sound impulses emitted. In other forms, a single impulse is used to initiate free vibrations of the sound producer, on which the damping of the emitted sound waves then directly depends.
GB2326021A 1921-09-01 1921-09-01 Sound signalling systems Expired GB192725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2326021A GB192725A (en) 1921-09-01 1921-09-01 Sound signalling systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2326021A GB192725A (en) 1921-09-01 1921-09-01 Sound signalling systems

Publications (1)

Publication Number Publication Date
GB192725A true GB192725A (en) 1923-02-01

Family

ID=10192758

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2326021A Expired GB192725A (en) 1921-09-01 1921-09-01 Sound signalling systems

Country Status (1)

Country Link
GB (1) GB192725A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2509913A (en) * 1944-12-14 1950-05-30 Bell Telephone Labor Inc Electric power source

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2509913A (en) * 1944-12-14 1950-05-30 Bell Telephone Labor Inc Electric power source

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