GB375853A - Improvements in diaphragms for acoustic instruments - Google Patents

Improvements in diaphragms for acoustic instruments

Info

Publication number
GB375853A
GB375853A GB970731A GB970731A GB375853A GB 375853 A GB375853 A GB 375853A GB 970731 A GB970731 A GB 970731A GB 970731 A GB970731 A GB 970731A GB 375853 A GB375853 A GB 375853A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
diaphragms
flat
class
curved
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
GB970731A
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.)
ARTHUR HONEY
Original Assignee
ARTHUR HONEY
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 ARTHUR HONEY filed Critical ARTHUR HONEY
Priority to GB970731A priority Critical patent/GB375853A/en
Publication of GB375853A publication Critical patent/GB375853A/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

375,853. Diaphragms. HONEY, A., 7, Buckley Road, Brondesbury, London. March 31, 1931, No. 9707. [Class 40 (iv).] A diaphragm for telephone instruments, loud-speakers, gramophones, &c. is shaped so as to have a central portion in the form of a sharply angled cone, as shown in the Figure, or a short central solid or tubular part, which may be cylindrical, connected by a gradually curved portion to a flat base, the outer edge of which is mounted on a frame or casing. The flat outer portion of the diaphragm is intended to be particularly responsive to low frequencies, and the central portion to high frequencies. The diaphragm is made of any material of suitable rigidity and elasticity such as metal, paper, fabric, glass, ebonite, or celluloid, and is formed by moulding, spinning or drawing a flat sheet to the required shape. Specifications 193,727, 257,317 and 312,130, [all in Class 40 (iv), Telephones &c.], are referred to. The Provisional Specification also describes diaphragms of varying thickness, one form of which has a flat surface at one side and a curved surface on the other, so that the centre part is relatively thick ; in another construction both sides may have curved conical or annular surfaces," with the thickest part at the centre.
GB970731A 1931-03-31 1931-03-31 Improvements in diaphragms for acoustic instruments Expired GB375853A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB970731A GB375853A (en) 1931-03-31 1931-03-31 Improvements in diaphragms for acoustic instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB970731A GB375853A (en) 1931-03-31 1931-03-31 Improvements in diaphragms for acoustic instruments

Publications (1)

Publication Number Publication Date
GB375853A true GB375853A (en) 1932-06-30

Family

ID=9877217

Family Applications (1)

Application Number Title Priority Date Filing Date
GB970731A Expired GB375853A (en) 1931-03-31 1931-03-31 Improvements in diaphragms for acoustic instruments

Country Status (1)

Country Link
GB (1) GB375853A (en)

Similar Documents

Publication Publication Date Title
GB375853A (en) Improvements in diaphragms for acoustic instruments
GB320654A (en) Improvements in loud speakers for wireless apparatus or the like
CN204836457U (en) Outdoor portable speaker
US2234833A (en) Acoustical apparatus
GB451754A (en) Improvements in and relating to loud speakers
GB329429A (en) Improvements relating to transmitters for use in telephone and sound recording systems
GB381579A (en) Improvements in and relating to sound emitting devices
GB313282A (en) Improvements relating to loud speakers
CN207475852U (en) For the titanium film structure and loudspeaker of loudspeaker
GB342249A (en) Improvements in wireless loud-speakers
GB385082A (en) Improvements in devices for protecting the ear against acoustic shocks
GB282296A (en) Improvements in acoustic diaphragms
US1819627A (en) Sound reproducer and method of manufacturing the same
GB284343A (en) Improvements in or connected with souud reproducing devices
GB359092A (en) Improvements in loud speakers
GB213519A (en) Improvements in or relating to mountings or attachments for telephone receivers
GB311044A (en) Improvements in diaphragms for gramophones, telephonic loud speakers and the like
GB660115A (en) Improvements in or relating to a process for the accretion moulding of diaphragms from cellulose pulp and the like
GB304888A (en) Improvements in diaphragms for use in connection with gramophone sound boxes, loud speaking telephone receivers and for like purposes
GB334350A (en) Improvements in or relating to mounting cone diaphragms of loud speakers and the like
GB397682A (en) Improvements in moving coil loudspeakers
US2030001A (en) Cone for use in wireless loudspeakers, telephones, and the like
GB306692A (en) Improvements relating to acoustical devices, such as loud-speakers
GB396165A (en) Improvements in or relating to loud speakers
GB277689A (en) Improvements in telephonic loudspeakers