GB1357925A - Sound transducer - Google Patents

Sound transducer

Info

Publication number
GB1357925A
GB1357925A GB4011171A GB4011171A GB1357925A GB 1357925 A GB1357925 A GB 1357925A GB 4011171 A GB4011171 A GB 4011171A GB 4011171 A GB4011171 A GB 4011171A GB 1357925 A GB1357925 A GB 1357925A
Authority
GB
United Kingdom
Prior art keywords
pulled
film
sound
sound head
aug
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
GB4011171A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1357925A publication Critical patent/GB1357925A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means
    • G03B31/02—Associated working of cameras or projectors with sound-recording or sound-reproducing means in which sound track is on a moving-picture film

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Moving Of Heads (AREA)
  • Projection Apparatus (AREA)
  • Advancing Webs (AREA)

Abstract

1357925 Recording and playback EASTMAN KODAK CO 26 Aug 1971 [27 Aug 1970] 40111/71 Heading G5R A sound record web is pulled or pushed by reversible drive means past a sound head comprising two members which grip the web under spring pressure when it is pulled, playing back the recorded sound, and release it when it is pushed in the opposite direction. As shown, during projection a cine film 11 is pulled through a magnetic or optical sound head 12 comprising two members 14, 16 by a drive sprocket 13, the movement of the film being smoothed by a capstan 21 co-operating with a pinch roller 22 having a rubber sleeve 25. On reversal of the drive, Fig. 2 (not shown), a solenoid 30 is energized so that its plunger 31 strikes a lever 26 which lifts both the upper sound head member 16 and, after lost motion adjustable by means of a screw 34, the pinch roller 22 from the film 11 against the action of springs 28, 38.
GB4011171A 1970-08-27 1971-08-26 Sound transducer Expired GB1357925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6732570A 1970-08-27 1970-08-27

Publications (1)

Publication Number Publication Date
GB1357925A true GB1357925A (en) 1974-06-26

Family

ID=22075242

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4011171A Expired GB1357925A (en) 1970-08-27 1971-08-26 Sound transducer

Country Status (5)

Country Link
US (1) US3678209A (en)
JP (1) JPS5251540Y2 (en)
DE (1) DE2142806A1 (en)
FR (1) FR2103550B1 (en)
GB (1) GB1357925A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52165703U (en) * 1976-06-10 1977-12-15
JPH02130215U (en) * 1989-03-31 1990-10-26

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658954A (en) * 1951-06-26 1953-11-10 Rca Corp Motion-picture film handling apparatus
US3047671A (en) * 1959-05-29 1962-07-31 Bell & Howell Co Sound motion picture projector
US3233958A (en) * 1962-10-24 1966-02-08 Keystone Camera Company Inc Motion picture sound projector
US3352975A (en) * 1963-04-10 1967-11-14 Rca Corp Motion picture apparatus with magnetic and optical sound reproducing means
US3397290A (en) * 1965-03-08 1968-08-13 Eastman Kodak Co Mechanism for positioning rollers and transducer means relative to a film strip
US3576404A (en) * 1967-10-31 1971-04-27 Nippon Kogaku Kk Device for optical and magnetic sound track on film reproduction

Also Published As

Publication number Publication date
US3678209A (en) 1972-07-18
FR2103550A1 (en) 1972-04-14
JPS5251540Y2 (en) 1977-11-22
JPS47185U (en) 1972-04-20
DE2142806A1 (en) 1972-03-02
FR2103550B1 (en) 1973-06-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee