GB687037A - Improvements in or relating to film footage counters for cinematograph cameras - Google Patents

Improvements in or relating to film footage counters for cinematograph cameras

Info

Publication number
GB687037A
GB687037A GB402951A GB402951A GB687037A GB 687037 A GB687037 A GB 687037A GB 402951 A GB402951 A GB 402951A GB 402951 A GB402951 A GB 402951A GB 687037 A GB687037 A GB 687037A
Authority
GB
United Kingdom
Prior art keywords
magazine
film
mark
wall
shaft
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
GB402951A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB402951A priority Critical patent/GB687037A/en
Publication of GB687037A publication Critical patent/GB687037A/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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/32Details specially adapted for motion-picture projection
    • G03B21/43Driving mechanisms

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection-Type Copiers In General (AREA)

Abstract

687,037. Kinematograph cameras. BOLSEY, J. Feb. 19, 1951, No. 4029/51. Class 97 (i). A footage counter makes a mark on the side of the magazine during the film run to indicate the length of film exposed. In the form shown, a pin 18 carried on the spring drum 16 of the driving motor, strikes the pivoted lever 19 once each revolution and a pawl 22 pivoted on the lever moves forward the ratchet wheel 23 on the shaft 24. The shaft carries at one end, outside the camera casing, a dial, and at the other, in the film magazine compartment, a disc carrying an eccentrically mounted marking member, e.g. of graphite, which makes an arcuate mark on the wall of the film magazine. The mark is concentric with a scale on the magazine wall. The disc is spring-urged outwardly on the shaft to maintain contact between the marking member and the magazine wall. Means may be provided to return the counting mechanism to its initial position when the magazine is removed.
GB402951A 1951-02-19 1951-02-19 Improvements in or relating to film footage counters for cinematograph cameras Expired GB687037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB402951A GB687037A (en) 1951-02-19 1951-02-19 Improvements in or relating to film footage counters for cinematograph cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB402951A GB687037A (en) 1951-02-19 1951-02-19 Improvements in or relating to film footage counters for cinematograph cameras

Publications (1)

Publication Number Publication Date
GB687037A true GB687037A (en) 1953-02-04

Family

ID=9769382

Family Applications (1)

Application Number Title Priority Date Filing Date
GB402951A Expired GB687037A (en) 1951-02-19 1951-02-19 Improvements in or relating to film footage counters for cinematograph cameras

Country Status (1)

Country Link
GB (1) GB687037A (en)

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