GB203424A - Improvements in the diaphragms of sound recording and reproducing instruments - Google Patents

Improvements in the diaphragms of sound recording and reproducing instruments

Info

Publication number
GB203424A
GB203424A GB1667022A GB1667022A GB203424A GB 203424 A GB203424 A GB 203424A GB 1667022 A GB1667022 A GB 1667022A GB 1667022 A GB1667022 A GB 1667022A GB 203424 A GB203424 A GB 203424A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
sound
diaphragms
metal spring
sound recording
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
GB1667022A
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.)
RUPERT DUDLEY HOWARD
Original Assignee
RUPERT DUDLEY HOWARD
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 RUPERT DUDLEY HOWARD filed Critical RUPERT DUDLEY HOWARD
Priority to GB1667022A priority Critical patent/GB203424A/en
Publication of GB203424A publication Critical patent/GB203424A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

203,424. Howard, R. D. June 16, 1922. Tool-arm mountings. - In a soundrecording or reproducing instrument, the diaphragm is curved cylindrically before being fixed in the sound-box, and when in position it is flattened by the clamping action of the sound-box casing assisted by spring pressure applied through the stylusbar. The diaphragm A, which is shown separately in Figs. 3 and 4, is preferably. made of celluloid, and may be reinforced by a metal spring plate G, preferably of thin steel. The preliminary curving of the diaphragm may be effected by securing a curved metal spring to a normally flat non- metallic disc. The stylus-bar D is mounted on a knife-edge D<1> and held in position by two oppositely-disposed flat springs E, F, engaging with adjustable screws J. H.
GB1667022A 1922-06-16 1922-06-16 Improvements in the diaphragms of sound recording and reproducing instruments Expired GB203424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1667022A GB203424A (en) 1922-06-16 1922-06-16 Improvements in the diaphragms of sound recording and reproducing instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1667022A GB203424A (en) 1922-06-16 1922-06-16 Improvements in the diaphragms of sound recording and reproducing instruments

Publications (1)

Publication Number Publication Date
GB203424A true GB203424A (en) 1923-09-13

Family

ID=10081487

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1667022A Expired GB203424A (en) 1922-06-16 1922-06-16 Improvements in the diaphragms of sound recording and reproducing instruments

Country Status (1)

Country Link
GB (1) GB203424A (en)

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