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GB353487A - Improvements in or connected with apparatus for reproducing sound from photographic records - Google Patents

Improvements in or connected with apparatus for reproducing sound from photographic records

Info

Publication number
GB353487A
GB353487A GB885630A GB885630A GB353487A GB 353487 A GB353487 A GB 353487A GB 885630 A GB885630 A GB 885630A GB 885630 A GB885630 A GB 885630A GB 353487 A GB353487 A GB 353487A
Authority
GB
United Kingdom
Prior art keywords
sound
light
amplifier
unit
sensitive cell
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
GB885630A
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.)
STUART KEITH WILSON
Original Assignee
STUART KEITH WILSON
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 STUART KEITH WILSON filed Critical STUART KEITH WILSON
Priority to GB885630A priority Critical patent/GB353487A/en
Publication of GB353487A publication Critical patent/GB353487A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor

Landscapes

  • Projection-Type Copiers In General (AREA)

Abstract

353,487. Sound-reproducing apparatus associated with kinematographs. WILSON, S. K., 12, Whitehall Road, Harrow, Middlesex. March 19, 1930, No. 8856. [Class 40 (ii).] Comprises sound or sound and picture reproducing apparatus in which the light-sensitive cell and amplifier are interconnected by short leads and supported on a vibration-absorbing structure located near to but not in mechanical contact with the projector mechanism nor the film-guiding attachment of the sound head, and not in direct contact with any part of the projection booth. A light-sensitive cell unit D, Fig. 1, and amplifier unit F are mounted upon a pedestal A sunk into a concrete support B, the film driving mechanism being supported by a pedestal C. The light-sensitive cell unit D is disposed at one end of a tube E which is in line with the sound gate and made of rubber, silk or other material which will not transmit vibration. Alternatively the container of the unit D may be formed as a shield from stray light, when the tube E can be dispensed with. Between the tube E and housing G is an air-space H, Fig. 4, or a vibration absorbing material. The light-sensitive cell is connected with the amplifier by short leads and the unit D may be mounted from the amplifier F through links and' brackets, Fig. 3, to allow for any desired angular displacement.
GB885630A 1930-03-19 1930-03-19 Improvements in or connected with apparatus for reproducing sound from photographic records Expired GB353487A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB885630A GB353487A (en) 1930-03-19 1930-03-19 Improvements in or connected with apparatus for reproducing sound from photographic records

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB885630A GB353487A (en) 1930-03-19 1930-03-19 Improvements in or connected with apparatus for reproducing sound from photographic records

Publications (1)

Publication Number Publication Date
GB353487A true GB353487A (en) 1931-07-20

Family

ID=9860563

Family Applications (1)

Application Number Title Priority Date Filing Date
GB885630A Expired GB353487A (en) 1930-03-19 1930-03-19 Improvements in or connected with apparatus for reproducing sound from photographic records

Country Status (1)

Country Link
GB (1) GB353487A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175434A (en) * 1985-05-14 1986-11-26 Alexander David Mclachlan Sound reproduction apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175434A (en) * 1985-05-14 1986-11-26 Alexander David Mclachlan Sound reproduction apparatus
GB2175434B (en) * 1985-05-14 1989-07-12 Alexander David Mclachlan Sound reproduction apparatus

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