GB245772A - Improvements in cinematographic apparatus with continuous motion of the film - Google Patents

Improvements in cinematographic apparatus with continuous motion of the film

Info

Publication number
GB245772A
GB245772A GB412/26A GB41226A GB245772A GB 245772 A GB245772 A GB 245772A GB 412/26 A GB412/26 A GB 412/26A GB 41226 A GB41226 A GB 41226A GB 245772 A GB245772 A GB 245772A
Authority
GB
United Kingdom
Prior art keywords
mirror
objective
lever
lens
film
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
GB412/26A
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.)
Societe des Etablissements Gaumont
Original Assignee
Societe des Etablissements Gaumont
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 Societe des Etablissements Gaumont filed Critical Societe des Etablissements Gaumont
Publication of GB245772A publication Critical patent/GB245772A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B41/00Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor
    • G03B41/02Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film
    • G03B41/04Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film with optical compensator
    • G03B41/10Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film with optical compensator with oscillating reflecting member

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Eye Examination Apparatus (AREA)

Abstract

245,772. Soc. des Etablissements Gaumont. Jan. 9, 1925, [Convention date]. Kinematograph apparatus.-In continuous-feed apparatus wherein the objective comprises two lenses having perpendicular axes, and optical compensation is effected by means of an oscillating mirror placed near the intersection of the axes, the lenses are fixed and the mirror is placed at the apex of the luminous beam; the oscillation of the mirror may be effected by a cam capable of being moved by hand, or of being automatically controlled by the film, so as to vary the movement of the mirror. As shown in Fig. 1, the mirror M is placed at I between the lens O of the objective and the normal position O<1> of the second lens of the objective, the second lens being actually placed at 0'. The mirror may be oscillated by a cam K, Figs. 3 and 4, engaging a spring-controlled lever Q, and constructed to effect, once or more during each revolution, a uniform turning movement of the mirror during compensation and a quick return movement. The cam K is tapered and may be axially moved by a lever L to vary the angular movement of the mirror, the lever being operated bv hand or by a spring-pressed lever carrying a roller bearing on the film between the roller C and a toothed sprocket which is driven in unison with the driving sprocket 3 and is provided between the roller C and the spool A. The mirror may be replaced by a prism, and a prism or mirror may be provided to divert the projection beam emerging from the objective into a direction parallel to the entering beam. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a gate curved' about the point I. This subject-matter does not appear in the Specification as accepted.
GB412/26A 1925-01-09 1926-01-06 Improvements in cinematographic apparatus with continuous motion of the film Expired GB245772A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR245772X 1925-01-09

Publications (1)

Publication Number Publication Date
GB245772A true GB245772A (en) 1927-01-06

Family

ID=8883657

Family Applications (1)

Application Number Title Priority Date Filing Date
GB412/26A Expired GB245772A (en) 1925-01-09 1926-01-06 Improvements in cinematographic apparatus with continuous motion of the film

Country Status (1)

Country Link
GB (1) GB245772A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523694A (en) * 1946-07-09 1950-09-26 Gras Adrien Louis Optical rectifier for motion-picture projectors
US2771812A (en) * 1952-09-05 1956-11-27 Eastman Kodak Co Apparatus for continuous motion picture projection
US3544207A (en) * 1968-01-03 1970-12-01 Bell & Howell Co Shutter control mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523694A (en) * 1946-07-09 1950-09-26 Gras Adrien Louis Optical rectifier for motion-picture projectors
US2771812A (en) * 1952-09-05 1956-11-27 Eastman Kodak Co Apparatus for continuous motion picture projection
US3544207A (en) * 1968-01-03 1970-12-01 Bell & Howell Co Shutter control mechanism

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