GB337084A - Damping device for oscillographs, particularly for photographically recording sound - Google Patents

Damping device for oscillographs, particularly for photographically recording sound

Info

Publication number
GB337084A
GB337084A GB23932/29A GB2393229A GB337084A GB 337084 A GB337084 A GB 337084A GB 23932/29 A GB23932/29 A GB 23932/29A GB 2393229 A GB2393229 A GB 2393229A GB 337084 A GB337084 A GB 337084A
Authority
GB
United Kingdom
Prior art keywords
conductor
oscillographs
coating
recording sound
damping device
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
GB23932/29A
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.)
Selenophon Licht & Tonbildges
Original Assignee
Selenophon Licht & Tonbildges
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 Selenophon Licht & Tonbildges filed Critical Selenophon Licht & Tonbildges
Publication of GB337084A publication Critical patent/GB337084A/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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0932—Details of sprung supports
    • 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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/003—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent
    • G11B7/0032—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent for moving-picture soundtracks, i.e. cinema
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372—Lenses
    • G11B2007/13727—Compound lenses, i.e. two or more lenses co-operating to perform a function, e.g. compound objective lens including a solid immersion lens, positive and negative lenses either bonded together or with adjustable spacing

Landscapes

  • Electrophonic Musical Instruments (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

337,084. Selenophon Licht-und Tonbilges. July 11, 1929, [Convention date]. Oscillographs particularly for photographically recording sound and wherein the conductor or string is vibrated in the magnetic field of the instrument by telephone currents, have their movement damped by coating the conductor with a light viscous material such as lacquer, glue, or gum arabic. The coating may be applied over the whole length of the conductor, or, as shown in Fig. 2, a part of the conductor 1 at which it is crossed by the beam of light may be left uncovered. The coating 3 is preferably broadened where the conductor is clamped in jaws 2
GB23932/29A 1929-07-11 1929-08-03 Damping device for oscillographs, particularly for photographically recording sound Expired GB337084A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT337084X 1929-07-11

Publications (1)

Publication Number Publication Date
GB337084A true GB337084A (en) 1930-10-30

Family

ID=3671995

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23932/29A Expired GB337084A (en) 1929-07-11 1929-08-03 Damping device for oscillographs, particularly for photographically recording sound

Country Status (1)

Country Link
GB (1) GB337084A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0051331A1 (en) * 1980-10-30 1982-05-12 Koninklijke Philips Electronics N.V. Pivoting-mirror device
GB2148134A (en) * 1983-10-25 1985-05-30 Easyrest Limited Cue supports for billiards

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0051331A1 (en) * 1980-10-30 1982-05-12 Koninklijke Philips Electronics N.V. Pivoting-mirror device
GB2148134A (en) * 1983-10-25 1985-05-30 Easyrest Limited Cue supports for billiards

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