GB476777A - Improvements in or relating to sound film reproducing apparatus - Google Patents

Improvements in or relating to sound film reproducing apparatus

Info

Publication number
GB476777A
GB476777A GB28056/36A GB2805636A GB476777A GB 476777 A GB476777 A GB 476777A GB 28056/36 A GB28056/36 A GB 28056/36A GB 2805636 A GB2805636 A GB 2805636A GB 476777 A GB476777 A GB 476777A
Authority
GB
United Kingdom
Prior art keywords
secured
reproducing apparatus
cell
relating
oct
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
GB28056/36A
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Publication of GB476777A publication Critical patent/GB476777A/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

  • Electrophonic Musical Instruments (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Toys (AREA)

Abstract

476,777. Optical sound-reproducing apparatus. ZEISS IKON AKT.-GES. Oct. 15, 1936, Nos. 28056 and 28057. Convention dates, Oct. 22, 1935 and Nov. 6, 1935. [Class 40 (ii)] [Also in Group XL] An optical sound-film reproducing-apparatus is provided with a photoelectric cell 30 having an envelope of horse-shoe shape so as partly to embrace the hub of the drum 3, the cell being secured by its contacts 33, 34 to terminals 35, 36 separated by insulation 37 and mounted with insulation on a carrier 38 secured to the housing 1. A metal strip 39 provided with a light-beam aperture 41 is secured round the cell and electrical connections by a screw 40.
GB28056/36A 1935-10-22 1936-10-15 Improvements in or relating to sound film reproducing apparatus Expired GB476777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE476777X 1935-10-22

Publications (1)

Publication Number Publication Date
GB476777A true GB476777A (en) 1937-12-15

Family

ID=6542036

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28056/36A Expired GB476777A (en) 1935-10-22 1936-10-15 Improvements in or relating to sound film reproducing apparatus

Country Status (1)

Country Link
GB (1) GB476777A (en)

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