GB168723A - Improved automatically operated electric switch mechanism for use in connection with cinematograph apparatus to cut off the current in case of breakage of a film - Google Patents

Improved automatically operated electric switch mechanism for use in connection with cinematograph apparatus to cut off the current in case of breakage of a film

Info

Publication number
GB168723A
GB168723A GB1784920A GB1784920A GB168723A GB 168723 A GB168723 A GB 168723A GB 1784920 A GB1784920 A GB 1784920A GB 1784920 A GB1784920 A GB 1784920A GB 168723 A GB168723 A GB 168723A
Authority
GB
United Kingdom
Prior art keywords
breakage
cut
film
current
connection
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
GB1784920A
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.)
JOSEPH WILLIAM CLIFFE
THOMAS BARKER RUTTER
Original Assignee
JOSEPH WILLIAM CLIFFE
THOMAS BARKER RUTTER
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 JOSEPH WILLIAM CLIFFE, THOMAS BARKER RUTTER filed Critical JOSEPH WILLIAM CLIFFE
Priority to GB1784920A priority Critical patent/GB168723A/en
Publication of GB168723A publication Critical patent/GB168723A/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
    • 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)
GB1784920A 1920-06-30 1920-06-30 Improved automatically operated electric switch mechanism for use in connection with cinematograph apparatus to cut off the current in case of breakage of a film Expired GB168723A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1784920A GB168723A (en) 1920-06-30 1920-06-30 Improved automatically operated electric switch mechanism for use in connection with cinematograph apparatus to cut off the current in case of breakage of a film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1784920A GB168723A (en) 1920-06-30 1920-06-30 Improved automatically operated electric switch mechanism for use in connection with cinematograph apparatus to cut off the current in case of breakage of a film

Publications (1)

Publication Number Publication Date
GB168723A true GB168723A (en) 1921-09-15

Family

ID=10102289

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1784920A Expired GB168723A (en) 1920-06-30 1920-06-30 Improved automatically operated electric switch mechanism for use in connection with cinematograph apparatus to cut off the current in case of breakage of a film

Country Status (1)

Country Link
GB (1) GB168723A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2566187A (en) * 1946-11-01 1951-08-28 Photoswitch Inc Movie projector safety switch
US3166651A (en) * 1961-10-02 1965-01-19 Leimer Feeler device for moving runs of sheet material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2566187A (en) * 1946-11-01 1951-08-28 Photoswitch Inc Movie projector safety switch
US3166651A (en) * 1961-10-02 1965-01-19 Leimer Feeler device for moving runs of sheet material

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