GB451754A - Improvements in and relating to loud speakers - Google Patents

Improvements in and relating to loud speakers

Info

Publication number
GB451754A
GB451754A GB187336A GB187336A GB451754A GB 451754 A GB451754 A GB 451754A GB 187336 A GB187336 A GB 187336A GB 187336 A GB187336 A GB 187336A GB 451754 A GB451754 A GB 451754A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
loud
clerkenwell
diaphragms
substantially free
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
GB187336A
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.)
GERALD AUBREY BARDEN
GOODMANS CLERKENWELL Ltd
Original Assignee
GERALD AUBREY BARDEN
GOODMANS CLERKENWELL 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 GERALD AUBREY BARDEN, GOODMANS CLERKENWELL Ltd filed Critical GERALD AUBREY BARDEN
Priority to GB187336A priority Critical patent/GB451754A/en
Publication of GB451754A publication Critical patent/GB451754A/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
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers

Landscapes

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

Abstract

451,754. Loud-speakers; diaphragms. BARDEN, G. A., 11, Barcombe Avenue, Streatham Hill, and GOODMANS (CLERKENWELL), Ltd., Broad Yard Works, Turnmill Street, Clerkenwell, both in London. Jan. 21, 1936, No. 1873. [Class 40 (iv)] In a loud-speaker of the kind comprising a main diaphragm and an auxiliary diaphragm arranged coaxially or concentrically and actuated at their centres by common electromechanical means, the smaller diaphragm 7 is curved in planes including its axis, while the larger diaphragm 6, which has a substantially free or floating edge, is substantially straight in such planes. In the construction shown, the inner edges of the inner and outer diaphragms 7, 6, are attached to the inner and outer surfaces of the cylindrical former 4 of a moving- coil speaker. The outer edge of the diaphragm 6 is provided with a corrugated surround, which permits substantially free movement of the diaphragm and is clamped between metal rings 11, 12. The auxiliary diaphragm is made of paper or other fibrous material moulded to shape and impregnated with synthetic resin.
GB187336A 1936-01-21 1936-01-21 Improvements in and relating to loud speakers Expired GB451754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB187336A GB451754A (en) 1936-01-21 1936-01-21 Improvements in and relating to loud speakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB187336A GB451754A (en) 1936-01-21 1936-01-21 Improvements in and relating to loud speakers

Publications (1)

Publication Number Publication Date
GB451754A true GB451754A (en) 1936-08-11

Family

ID=9729526

Family Applications (1)

Application Number Title Priority Date Filing Date
GB187336A Expired GB451754A (en) 1936-01-21 1936-01-21 Improvements in and relating to loud speakers

Country Status (1)

Country Link
GB (1) GB451754A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565069A (en) * 1946-03-30 1951-08-21 Rola Company Inc Loud-speaker of the double diaphragm type
US2615995A (en) * 1948-10-29 1952-10-28 Voigt Paul Gustavus Ad Helmuth Moving coil loud-speaker
US2722991A (en) * 1951-09-13 1955-11-08 Gordon S Carbonneau Loud speaker cone mounting
DE945568C (en) * 1937-04-30 1956-07-12 Telefunken Gmbh Loudspeaker with two conical diaphragms made from materials of different stiffness and lightness
US2910546A (en) * 1954-02-24 1959-10-27 Carl A Swanson Loud speaker assembly
US2956636A (en) * 1956-06-11 1960-10-18 Sipko L Boersma Loudspeaker

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE945568C (en) * 1937-04-30 1956-07-12 Telefunken Gmbh Loudspeaker with two conical diaphragms made from materials of different stiffness and lightness
US2565069A (en) * 1946-03-30 1951-08-21 Rola Company Inc Loud-speaker of the double diaphragm type
US2615995A (en) * 1948-10-29 1952-10-28 Voigt Paul Gustavus Ad Helmuth Moving coil loud-speaker
US2722991A (en) * 1951-09-13 1955-11-08 Gordon S Carbonneau Loud speaker cone mounting
US2910546A (en) * 1954-02-24 1959-10-27 Carl A Swanson Loud speaker assembly
US2956636A (en) * 1956-06-11 1960-10-18 Sipko L Boersma Loudspeaker

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