GB346149A - Improvements in and relating to apparatus for reproducing sound from sound film records - Google Patents

Improvements in and relating to apparatus for reproducing sound from sound film records

Info

Publication number
GB346149A
GB346149A GB10258/30A GB1025830A GB346149A GB 346149 A GB346149 A GB 346149A GB 10258/30 A GB10258/30 A GB 10258/30A GB 1025830 A GB1025830 A GB 1025830A GB 346149 A GB346149 A GB 346149A
Authority
GB
United Kingdom
Prior art keywords
cell
sound
relating
march
photo
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
GB10258/30A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB346149A publication Critical patent/GB346149A/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
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/43—Control or regulation of mechanical tension of record carrier, e.g. tape tension

Abstract

346,149. Photo-electric cells. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Heisler, C. L. ; 1443, Glenwood Boulevard, Schenectady, New York, U.S.A.) March 31, 1930, No. 10258. Convention date, March 29, 1929. [Class 39 (i).] In optical means for reproducing sound from a film record, a loop y in the film passes over a steel skid 50 which encloses the photo-electric cell 51. The cell housing 54 is clamped in a socket 53 carrying contacts 55 with which pins on the cell engage in a detachable manner. Felt packing is provided between the cell and the walls of the housing 54.
GB10258/30A 1929-03-29 1930-03-31 Improvements in and relating to apparatus for reproducing sound from sound film records Expired GB346149A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US346149XA 1929-03-29 1929-03-29

Publications (1)

Publication Number Publication Date
GB346149A true GB346149A (en) 1931-04-09

Family

ID=21877514

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10258/30A Expired GB346149A (en) 1929-03-29 1930-03-31 Improvements in and relating to apparatus for reproducing sound from sound film records

Country Status (1)

Country Link
GB (1) GB346149A (en)

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