GB196392A - Improvements in diaphragms for gramophone reproducers, telephone receivers and like sound producing devices - Google Patents

Improvements in diaphragms for gramophone reproducers, telephone receivers and like sound producing devices

Info

Publication number
GB196392A
GB196392A GB228022A GB228022A GB196392A GB 196392 A GB196392 A GB 196392A GB 228022 A GB228022 A GB 228022A GB 228022 A GB228022 A GB 228022A GB 196392 A GB196392 A GB 196392A
Authority
GB
United Kingdom
Prior art keywords
diaphragms
reproducers
gramophone
sound producing
producing devices
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
GB228022A
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 GB228022A priority Critical patent/GB196392A/en
Publication of GB196392A publication Critical patent/GB196392A/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

Landscapes

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

Abstract

196,392. Graham, E. A. Jan. 25, 1922. Diaphragms.-A composite diaphragm for a telephone receiver or the like, comprises a plane disc of mica provided on one or each side with a complete or partial protective coating of celluloid, collodion, cellulose acetate, or like cellulose product applied to the disc in solution and dried. Alternatively, as shown, the diaphragm may consist of two or more layers of mica a, a<1>, cemented together by an intervening layer b of celluloid, and having outer layers b<1>, b<2> of celluloid or like composition applied as described above.
GB228022A 1922-01-25 1922-01-25 Improvements in diaphragms for gramophone reproducers, telephone receivers and like sound producing devices Expired GB196392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB228022A GB196392A (en) 1922-01-25 1922-01-25 Improvements in diaphragms for gramophone reproducers, telephone receivers and like sound producing devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB228022A GB196392A (en) 1922-01-25 1922-01-25 Improvements in diaphragms for gramophone reproducers, telephone receivers and like sound producing devices

Publications (1)

Publication Number Publication Date
GB196392A true GB196392A (en) 1923-04-25

Family

ID=9736770

Family Applications (1)

Application Number Title Priority Date Filing Date
GB228022A Expired GB196392A (en) 1922-01-25 1922-01-25 Improvements in diaphragms for gramophone reproducers, telephone receivers and like sound producing devices

Country Status (1)

Country Link
GB (1) GB196392A (en)

Similar Documents

Publication Publication Date Title
GB196392A (en) Improvements in diaphragms for gramophone reproducers, telephone receivers and like sound producing devices
GB307734A (en) Electrostatic acoustic device
US1401143A (en) Sound-box diaphragm
GB638080A (en) Improvements relating to electro-dynamic reproducers or loud-speaking telephones of the moving coil type
US1705771A (en) Diaphragm
GB322689A (en) Improvements in or relating to diaphragms or membranes for the reproduction and amplification of sounds
GB372472A (en) Improved diaphragm for gramophone sound boxes, telephone receivers and the like
US1665284A (en) Acoustic diaphragm
US1800449A (en) Diaphragm
GB192142A (en) Diaphragms.-recording and reproducing, for gramophones and phonographs
US1413234A (en) Diaphragm
GB304888A (en) Improvements in diaphragms for use in connection with gramophone sound boxes, loud speaking telephone receivers and for like purposes
GB255582A (en) Vibratory diaphragms for acoustical instruments
CA255412A (en) Diaphragm for phonographic reproducers
GB447846A (en) Improvements in and relating to moving-coil loud speakers
GB254333A (en) Sound recording or reproducing devices
CA253195A (en) Diaphragm used in sound reproduction
GB391457A (en) Improvements in and relating to gramophone records
CA404904A (en) Loud speaker manufacture
GB182771A (en) Improvements in vibrating diaphragms
GB230634A (en) An improved diaphragm for sound reproduction
CA238492A (en) Diaphragm for sound reproducers
CA325710A (en) Loud speaker diaphragm
CA224426A (en) Loud speaking wireless phonograph
GB116482A (en) An Improved Construction of Diaphragm for use in Sound Recording and Sound Reproducing Machines, Telephones and other Instruments in which Vibrating Diaphragms are employed.