FR628637A - Device for successively switching on two cinematographic projection devices - Google Patents

Device for successively switching on two cinematographic projection devices

Info

Publication number
FR628637A
FR628637A FR628637DA FR628637A FR 628637 A FR628637 A FR 628637A FR 628637D A FR628637D A FR 628637DA FR 628637 A FR628637 A FR 628637A
Authority
FR
France
Prior art keywords
projection devices
successively switching
cinematographic projection
cinematographic
successively
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
Other languages
French (fr)
Inventor
Emile Renard
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 filed Critical
Application granted granted Critical
Publication of FR628637A publication Critical patent/FR628637A/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
    • G03B1/00—Film strip handling
    • G03B1/42—Guiding, framing, or constraining film in desired position relative to lens system
    • G03B1/48—Gates or pressure devices, e.g. plate
    • G03B1/50—Gates or pressure devices, e.g. plate adjustable or interchangeable, e.g. for different film widths
    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/18—Fire preventing or extinguishing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR628637D 1927-02-05 1927-02-05 Device for successively switching on two cinematographic projection devices Expired FR628637A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR628637T 1927-02-05

Publications (1)

Publication Number Publication Date
FR628637A true FR628637A (en) 1927-10-26

Family

ID=8989818

Family Applications (1)

Application Number Title Priority Date Filing Date
FR628637D Expired FR628637A (en) 1927-02-05 1927-02-05 Device for successively switching on two cinematographic projection devices

Country Status (1)

Country Link
FR (1) FR628637A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2586611A (en) * 1948-12-31 1952-02-19 Cadwell Corp Automatic slide changing and picture dissolving mechanism for still picture projectors
US3064521A (en) * 1958-09-27 1962-11-20 Bauer Eugen Gmbh Motion picture projector change-over shutter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2586611A (en) * 1948-12-31 1952-02-19 Cadwell Corp Automatic slide changing and picture dissolving mechanism for still picture projectors
US3064521A (en) * 1958-09-27 1962-11-20 Bauer Eugen Gmbh Motion picture projector change-over shutter

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