GB292335A - Improvements relating to gramophones and like sound reproducing instruments - Google Patents

Improvements relating to gramophones and like sound reproducing instruments

Info

Publication number
GB292335A
GB292335A GB1431127A GB1431127A GB292335A GB 292335 A GB292335 A GB 292335A GB 1431127 A GB1431127 A GB 1431127A GB 1431127 A GB1431127 A GB 1431127A GB 292335 A GB292335 A GB 292335A
Authority
GB
United Kingdom
Prior art keywords
stylus
screen
photo
diaphragm
light
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
GB1431127A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1431127A priority Critical patent/GB292335A/en
Publication of GB292335A publication Critical patent/GB292335A/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
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor

Landscapes

  • Optical Communication System (AREA)

Abstract

292,335. Aspden, R. L. May 27, 1927. Gramophone pick - ups; transmitters in which a sound-controlled light beam acts on a photo-electric element. - In connection with a stylus actuated diaphragm a screen or grid for light is mounted on the stylus, diaphragm or other part actuated by the stylus and the sound box carries another screen or grid and means for projecting a beam of light through both screens on to a photo-electric cell in an amplifying and reproducing circuit which may deliver through a separate horn or through the horn associated with the diaphragm. Fig. 2 shows a screen b inset in the stylus arm a and a screen d, light source e and photo-electric cell c carried by the sound box.
GB1431127A 1927-05-27 1927-05-27 Improvements relating to gramophones and like sound reproducing instruments Expired GB292335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1431127A GB292335A (en) 1927-05-27 1927-05-27 Improvements relating to gramophones and like sound reproducing instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1431127A GB292335A (en) 1927-05-27 1927-05-27 Improvements relating to gramophones and like sound reproducing instruments

Publications (1)

Publication Number Publication Date
GB292335A true GB292335A (en) 1928-06-21

Family

ID=10038875

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1431127A Expired GB292335A (en) 1927-05-27 1927-05-27 Improvements relating to gramophones and like sound reproducing instruments

Country Status (1)

Country Link
GB (1) GB292335A (en)

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