GB310127A - Improvements in or relating to sound reproducers for use in wireless telephony - Google Patents

Improvements in or relating to sound reproducers for use in wireless telephony

Info

Publication number
GB310127A
GB310127A GB534028A GB534028A GB310127A GB 310127 A GB310127 A GB 310127A GB 534028 A GB534028 A GB 534028A GB 534028 A GB534028 A GB 534028A GB 310127 A GB310127 A GB 310127A
Authority
GB
United Kingdom
Prior art keywords
cone
corrugations
corrugation
margin
sound reproducers
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
GB534028A
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 GB534028A priority Critical patent/GB310127A/en
Publication of GB310127A publication Critical patent/GB310127A/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
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Landscapes

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

Abstract

310,127. Bridger, R. O. Feb, 20, 1928. Diaphragms. - A conical diaphragm a for sound reproducers is formed concentrically with oppositely directed corrugations b, c close to its margin, the corrugations being spaced apart by an annulus d. The cone is also formed with a flat annular margin e, bound with felt and having its outer half secured to a ring &c. (not shown). The diaphragm may be formed from a sheet of cotton gauze, buckram, &c. painted on one side with a plastic paper preparation known under the registered Trade Mark " Hycolite " and pressed between heated dies so as to stretch the material and mould it to the required shape. In order to increase the flexibility of the cone at the corrugated portion thereof, it may be treated from the outer edge of the outer corrugation to the inner edge of the inner corrugation with glycerine. Such treatment is apt to flatten out the material of the cone as shown in Fig. 3. According to the Provisional Specification, the cone may be formed with an embossed pattern within the corrugations.
GB534028A 1928-02-20 1928-02-20 Improvements in or relating to sound reproducers for use in wireless telephony Expired GB310127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB534028A GB310127A (en) 1928-02-20 1928-02-20 Improvements in or relating to sound reproducers for use in wireless telephony

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB534028A GB310127A (en) 1928-02-20 1928-02-20 Improvements in or relating to sound reproducers for use in wireless telephony

Publications (1)

Publication Number Publication Date
GB310127A true GB310127A (en) 1929-04-25

Family

ID=9794267

Family Applications (1)

Application Number Title Priority Date Filing Date
GB534028A Expired GB310127A (en) 1928-02-20 1928-02-20 Improvements in or relating to sound reproducers for use in wireless telephony

Country Status (1)

Country Link
GB (1) GB310127A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072213A (en) * 1959-09-28 1963-01-08 Gen Electric Loudspeaker cone suspension
US3130811A (en) * 1959-09-28 1964-04-28 Gen Electric Loudspeaker cone suspension

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072213A (en) * 1959-09-28 1963-01-08 Gen Electric Loudspeaker cone suspension
US3130811A (en) * 1959-09-28 1964-04-28 Gen Electric Loudspeaker cone suspension

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