GB222180A - Improvements relating to diaphragms - Google Patents

Improvements relating to diaphragms

Info

Publication number
GB222180A
GB222180A GB16046/23A GB1604623A GB222180A GB 222180 A GB222180 A GB 222180A GB 16046/23 A GB16046/23 A GB 16046/23A GB 1604623 A GB1604623 A GB 1604623A GB 222180 A GB222180 A GB 222180A
Authority
GB
United Kingdom
Prior art keywords
discs
shellac
diaphragms
celluloid
mica
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
GB16046/23A
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.)
RADIOTIVE CORP
Original Assignee
RADIOTIVE CORP
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
Priority to US627063A priority Critical patent/US1646261A/en
Application filed by RADIOTIVE CORP filed Critical RADIOTIVE CORP
Priority to GB16046/23A priority patent/GB222180A/en
Priority to DER58770D priority patent/DE430435C/en
Priority to FR568290D priority patent/FR568290A/en
Priority to NL25329A priority patent/NL13657C/xx
Publication of GB222180A publication Critical patent/GB222180A/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
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact

Landscapes

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

Abstract

222,180. Imray, O. Y., (Radiotive Corporation). June 20, 1923. Diaphragms.-In a diaphragm of the kind wherein a disc of fabric is interposed between two discs of celluloid, all the discs are fastened together to form one membrane by an adhesive composition under heat and pressure. Two celluloid discs 5, 6 are adhesively united by a mixture 11, 12 containing two parts of shellac and one part of mica which, under the action of heat and pressure, forms a plastic mass, and permeates a silk disc 7. The opposing faces of the mould in which the diaphragm is formed are shaped so as to produce a plurality of annular corrugations 10. Instead of a mixture of shellac and mica, shellac alone may be employed.
GB16046/23A 1923-06-20 1923-06-20 Improvements relating to diaphragms Expired GB222180A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US627063A US1646261A (en) 1923-06-20 1923-03-23 Diaphragm
GB16046/23A GB222180A (en) 1923-06-20 1923-06-20 Improvements relating to diaphragms
DER58770D DE430435C (en) 1923-06-20 1923-06-23 membrane
FR568290D FR568290A (en) 1923-06-20 1923-07-02 Improvements to sound wave diaphragms
NL25329A NL13657C (en) 1923-06-20 1923-10-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16046/23A GB222180A (en) 1923-06-20 1923-06-20 Improvements relating to diaphragms

Publications (1)

Publication Number Publication Date
GB222180A true GB222180A (en) 1924-09-22

Family

ID=10070144

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16046/23A Expired GB222180A (en) 1923-06-20 1923-06-20 Improvements relating to diaphragms

Country Status (5)

Country Link
US (1) US1646261A (en)
DE (1) DE430435C (en)
FR (1) FR568290A (en)
GB (1) GB222180A (en)
NL (1) NL13657C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169471A (en) * 1985-01-04 1986-07-09 Anthony Bernard Clarke Acoustic diaphragm

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020971A (en) * 1962-02-13 Cefaly
AT304162B (en) * 1969-12-18 1972-12-27 Ciba Geigy Ag Stabilization of pesticidal phosphoric acid esters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169471A (en) * 1985-01-04 1986-07-09 Anthony Bernard Clarke Acoustic diaphragm

Also Published As

Publication number Publication date
NL13657C (en) 1925-09-15
FR568290A (en) 1924-03-21
DE430435C (en) 1926-06-18
US1646261A (en) 1927-10-18

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