GB410535A - A new or improved type of cone for use in wireless loudspeakers, telephones, and the like - Google Patents

A new or improved type of cone for use in wireless loudspeakers, telephones, and the like

Info

Publication number
GB410535A
GB410535A GB3372232A GB3372232A GB410535A GB 410535 A GB410535 A GB 410535A GB 3372232 A GB3372232 A GB 3372232A GB 3372232 A GB3372232 A GB 3372232A GB 410535 A GB410535 A GB 410535A
Authority
GB
United Kingdom
Prior art keywords
arm
diaphragm
cone
telephones
new
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
GB3372232A
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 GB3372232A priority Critical patent/GB410535A/en
Publication of GB410535A publication Critical patent/GB410535A/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

Landscapes

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

Abstract

410,535. Gramophones. HARRISON, F., 13, College Road, Braintree, Essex. Nov. 29, 1932, No. 33722. [Class 40 (ii).] A diaphragm comprising a truncated cone 4 secured to one end of a portion 1 having an apical angle of less than 30‹ and an axial depth substantially greater than the diameter of its mouth, has the edge of the portion 4 suspended by a cord from a movable arm 13 attached to the gramophone body 14 whilst the apex of the portion 1 is fitted with an apertured metal block 10 forming a needle holder and connected by a spring or resilient member to the arm 13. According to a modification, the portion 4 is arranged adjacent a gramophone tone arm and horn, the edge of the diaphragm being formed with lugs disposed between rubber rings, the arcuate spaces between the lugs being filled with light fabric or thin leather.
GB3372232A 1932-11-29 1932-11-29 A new or improved type of cone for use in wireless loudspeakers, telephones, and the like Expired GB410535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3372232A GB410535A (en) 1932-11-29 1932-11-29 A new or improved type of cone for use in wireless loudspeakers, telephones, and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3372232A GB410535A (en) 1932-11-29 1932-11-29 A new or improved type of cone for use in wireless loudspeakers, telephones, and the like

Publications (1)

Publication Number Publication Date
GB410535A true GB410535A (en) 1934-05-24

Family

ID=10356614

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3372232A Expired GB410535A (en) 1932-11-29 1932-11-29 A new or improved type of cone for use in wireless loudspeakers, telephones, and the like

Country Status (1)

Country Link
GB (1) GB410535A (en)

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