GB361304A - Improvements in and relating to film driving apparatus - Google Patents

Improvements in and relating to film driving apparatus

Info

Publication number
GB361304A
GB361304A GB14842/30A GB1484230A GB361304A GB 361304 A GB361304 A GB 361304A GB 14842/30 A GB14842/30 A GB 14842/30A GB 1484230 A GB1484230 A GB 1484230A GB 361304 A GB361304 A GB 361304A
Authority
GB
United Kingdom
Prior art keywords
film
drum
sprocket
sound
reproducing apparatus
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
GB14842/30A
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 GB361304A publication Critical patent/GB361304A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00Driving, 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
    • G11B15/56Driving, 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 the record carrier having reserve loop, e.g. to minimise inertia during acceleration measuring or control in connection therewith

Landscapes

  • Advancing Webs (AREA)
  • Automatic Disk Changers (AREA)

Abstract

361,304. Sound recording or reproducing apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Bradford, A. J. ; Alplaus, New York, U.S.A.) May 14, 1930, No. 14842. Convention date, May 14, 1929. Void [Published under Sect. 91 of the Acts]. [Class 40 (ii).] A sound film is moved without vibration through the control point x, Fig. 3, by providing braking, means in the form of a friction sprocket 6 driven by the film 1 as it passes to a drum 8, such means producing a predetermined tension of the film to avoid slippage on the drum. The sprocket 6 with its adjustable spring- pressed friction disc 19 is shown in Fig. 2. In the sound-reproducing apparatus shown in Fig. 3, a loop y in the film is passed over a fixed skid 24 enclosing the photo-electric cell 12. The drum 8 is preferably provided with a flywheel 15 and the film is drawn from the drum by a driving sprocket 10.
GB14842/30A 1929-05-14 1930-05-14 Improvements in and relating to film driving apparatus Expired GB361304A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US361304XA 1929-05-14 1929-05-14

Publications (1)

Publication Number Publication Date
GB361304A true GB361304A (en) 1931-11-16

Family

ID=21886802

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14842/30A Expired GB361304A (en) 1929-05-14 1930-05-14 Improvements in and relating to film driving apparatus

Country Status (1)

Country Link
GB (1) GB361304A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969673C (en) * 1941-04-08 1958-07-03 Klangfilm Gmbh Magnetic recorder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969673C (en) * 1941-04-08 1958-07-03 Klangfilm Gmbh Magnetic recorder

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