GB271976A - Improvements in or relating to apparatus suitable for the reproduction of acoustic effects - Google Patents

Improvements in or relating to apparatus suitable for the reproduction of acoustic effects

Info

Publication number
GB271976A
GB271976A GB754326A GB754326A GB271976A GB 271976 A GB271976 A GB 271976A GB 754326 A GB754326 A GB 754326A GB 754326 A GB754326 A GB 754326A GB 271976 A GB271976 A GB 271976A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
graham
supported
shows
reproduction
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
GB754326A
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 GB754326A priority Critical patent/GB271976A/en
Publication of GB271976A publication Critical patent/GB271976A/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
    • H04R7/16—Mounting or tensioning of diaphragms or cones

Landscapes

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

Abstract

271,976. Graham, M., and Graham, A., (Representatives of Graham, E. A.), and Rickets, W. J. March 18, 1926. Diaphragms; magnetic instruments. - In sound-reproducing apparatus employing a large diaphragm, the diaphragm, of conical or dished shape is supported by resilient ligaments extending radially in parallel planes from the periphery and the axially extended region of the surface. Fig. 2 shows the usual electromagnetic system 12 and an armature 11 attached to the diaphragm 1 which is supported by ligaments 4, 7. The diaphragm 1 is extremely light and is provided with a strengthening conical member 2 and the annular support 8 is provided with an extension 10 co-operating with a ring of felt mounted on the diaphragm 1. Fig. 4 shows the application to a gramophone in which the diaphragm 1 is connected to the stylus lever 13.
GB754326A 1926-03-18 1926-03-18 Improvements in or relating to apparatus suitable for the reproduction of acoustic effects Expired GB271976A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB754326A GB271976A (en) 1926-03-18 1926-03-18 Improvements in or relating to apparatus suitable for the reproduction of acoustic effects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB754326A GB271976A (en) 1926-03-18 1926-03-18 Improvements in or relating to apparatus suitable for the reproduction of acoustic effects

Publications (1)

Publication Number Publication Date
GB271976A true GB271976A (en) 1927-06-09

Family

ID=9835117

Family Applications (1)

Application Number Title Priority Date Filing Date
GB754326A Expired GB271976A (en) 1926-03-18 1926-03-18 Improvements in or relating to apparatus suitable for the reproduction of acoustic effects

Country Status (1)

Country Link
GB (1) GB271976A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4847907A (en) * 1987-04-03 1989-07-11 Pioneer Electronic Corporation Speaker system for radiating acoustic energy into a cabin of a motor vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4847907A (en) * 1987-04-03 1989-07-11 Pioneer Electronic Corporation Speaker system for radiating acoustic energy into a cabin of a motor vehicle

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