GB191313592A - New or Improved Means for Focussing for use in connection with Photographic Film Cameras. - Google Patents

New or Improved Means for Focussing for use in connection with Photographic Film Cameras.

Info

Publication number
GB191313592A
GB191313592A GB191313592DA GB191313592A GB 191313592 A GB191313592 A GB 191313592A GB 191313592D A GB191313592D A GB 191313592DA GB 191313592 A GB191313592 A GB 191313592A
Authority
GB
United Kingdom
Prior art keywords
film
focusing
screen
focussing
plane
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
Inventor
Edwin Francis Harper
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
Application granted granted Critical
Publication of GB191313592A publication Critical patent/GB191313592A/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
    • G03B19/00—Cameras
    • G03B19/02—Still-picture cameras
    • G03B19/04—Roll-film cameras

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)

Abstract

13,592. Harper, E. F. June 12. Cameras, roll-film; focusing -devices; roll spools.-A roll-film camera is provided with an arrangement whereby the focusing-screen can be automatically brought into the plane normally occupied by the film. The focusing- screen b, Fig. 3, is slidably mounted on pins b<3>, and is normally kept out of the plane of the film by springs e. A folding focusing-hood d is provided having at the hinged edges of the folding flaps projections d<1> which, when the hood is opened out, press on the frame of the focusing-screen and push it into the plane of the film. Apertures c<3>, Fig. 5, are provided in the film to accommodate the screen, and these apertures may be formed in non-sensitized portions c<2> of the film,
GB191313592D 1913-06-12 1913-06-12 New or Improved Means for Focussing for use in connection with Photographic Film Cameras. Expired GB191313592A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191313592T 1913-06-12

Publications (1)

Publication Number Publication Date
GB191313592A true GB191313592A (en) 1914-04-23

Family

ID=32645067

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191313592D Expired GB191313592A (en) 1913-06-12 1913-06-12 New or Improved Means for Focussing for use in connection with Photographic Film Cameras.

Country Status (1)

Country Link
GB (1) GB191313592A (en)

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