GB148976A - Improvements in electromagnetic sound producers and receivers - Google Patents

Improvements in electromagnetic sound producers and receivers

Info

Publication number
GB148976A
GB148976A GB2083620A GB2083620A GB148976A GB 148976 A GB148976 A GB 148976A GB 2083620 A GB2083620 A GB 2083620A GB 2083620 A GB2083620 A GB 2083620A GB 148976 A GB148976 A GB 148976A
Authority
GB
United Kingdom
Prior art keywords
coils
diaphragm
armature
field
hood
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
GB2083620A
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
Publication of GB148976A publication Critical patent/GB148976A/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)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Vibration Prevention Devices (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

148,976. Signal Ges. Aug 14, 1918, [Convention date]. Subaqueous audible signals.-In an electro-magnetic instrument for transmitting or receiving subaqueous signals, the armature and field-coils are connected by a member 7, part of which lies in a plane and vibrates at right angles thereto. The instrument is enclosed in a casing which includes the diaphragm 2. Polygonal or circular field coils 10, 11, which carry polarising current and alternating current respectively, are surrounded by a magnetic circuit formed of radially arranged iron laminµ 8, 9, which are welded together and to the carrying plates 13, 14. The plate 14 carrying the armature 9 is mounted on a hood 7 integral with the cup 5, which carries the field coils and is bolted to the diaphragm 2. The leads to the coils are brought in through a boring in the screw 12. The air gap can be inspected through a sight hole 16. The horizontal elastic part of the member 7 which connects the field-coils and armature may be formed as a diaphragm or plate or as a cross-beam, rods or the like. In a modification, the armature mounting is bolted to the diaphragm, and is connected to the field coils by a central pillar instead of the hood 7. Specification 148,413 is referred to. Reference has been directed by the Comptroller to Specification 148,417.
GB2083620A 1920-10-17 1920-07-10 Improvements in electromagnetic sound producers and receivers Expired GB148976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES54481D DE410318C (en) 1920-10-17 1920-10-17 Sound apparatus for underwater sound waves

Publications (1)

Publication Number Publication Date
GB148976A true GB148976A (en) 1921-11-10

Family

ID=7489830

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2083620A Expired GB148976A (en) 1920-10-17 1920-07-10 Improvements in electromagnetic sound producers and receivers

Country Status (2)

Country Link
DE (2) DE339085C (en)
GB (1) GB148976A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108927538A (en) * 2018-08-02 2018-12-04 哈尔滨理工大学 A kind of adjustable electromagnetic damping damping boring bar

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108927538A (en) * 2018-08-02 2018-12-04 哈尔滨理工大学 A kind of adjustable electromagnetic damping damping boring bar

Also Published As

Publication number Publication date
DE339085C (en) 1921-07-15
DE410318C (en) 1925-02-24

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