GB475869A - Improvements in diaphragms responding to or reproducing sound - Google Patents

Improvements in diaphragms responding to or reproducing sound

Info

Publication number
GB475869A
GB475869A GB1440536A GB1440536A GB475869A GB 475869 A GB475869 A GB 475869A GB 1440536 A GB1440536 A GB 1440536A GB 1440536 A GB1440536 A GB 1440536A GB 475869 A GB475869 A GB 475869A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
adhesive
diaphragms
coating
flexure
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
GB1440536A
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.)
ALAN KELVIN WEBB
Murphy Radio Ltd
Original Assignee
ALAN KELVIN WEBB
Murphy Radio 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 ALAN KELVIN WEBB, Murphy Radio Ltd filed Critical ALAN KELVIN WEBB
Priority to GB1440536A priority Critical patent/GB475869A/en
Publication of GB475869A publication Critical patent/GB475869A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/26—Damping by means acting directly on free portion of diaphragm or cone

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

475,869. Diaphragms. MURPHY RADIO, Ltd., and WEBB, A. K. May 21, 1936, No. 14405. [Class 40 (iv)] A diaphragm for loud-speakers is provided with an adherent layer or coating of finelydivided fibrous material, such as wool, silkfibre, or cotton flock, to hinder the flexure of the diaphragm involved in resonance to particular frequencies. The coating is applied by covering the surface to be treated with an adhesive, for instance, by spraying, and subsequently blowing the finely divided fibrous material upon the adhesive whilst it is still soft or tacky. The adhesive may be glue, varnish, resin, or a rubber solution and is preferably that known under the name of Suedine. The damping material may be applied along lines or over areas of flexure corresponding to particular resonances of the diaphragm.
GB1440536A 1936-05-21 1936-05-21 Improvements in diaphragms responding to or reproducing sound Expired GB475869A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1440536A GB475869A (en) 1936-05-21 1936-05-21 Improvements in diaphragms responding to or reproducing sound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1440536A GB475869A (en) 1936-05-21 1936-05-21 Improvements in diaphragms responding to or reproducing sound

Publications (1)

Publication Number Publication Date
GB475869A true GB475869A (en) 1937-11-22

Family

ID=10040617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1440536A Expired GB475869A (en) 1936-05-21 1936-05-21 Improvements in diaphragms responding to or reproducing sound

Country Status (1)

Country Link
GB (1) GB475869A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549091A (en) * 1946-10-25 1951-04-17 Bell Telephone Labor Inc Diaphragm for electroacoustic transducers
DE1041083B (en) * 1953-10-05 1958-10-16 Peiker H Acoustic membrane with viscous damping coating

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549091A (en) * 1946-10-25 1951-04-17 Bell Telephone Labor Inc Diaphragm for electroacoustic transducers
DE1041083B (en) * 1953-10-05 1958-10-16 Peiker H Acoustic membrane with viscous damping coating

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