GB150135A - Photographic printing frames - Google Patents

Photographic printing frames

Info

Publication number
GB150135A
GB150135A GB1649819A GB1649819A GB150135A GB 150135 A GB150135 A GB 150135A GB 1649819 A GB1649819 A GB 1649819A GB 1649819 A GB1649819 A GB 1649819A GB 150135 A GB150135 A GB 150135A
Authority
GB
United Kingdom
Prior art keywords
photographic printing
frames
printing frames
springs
points
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
GB1649819A
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 GB1649819A priority Critical patent/GB150135A/en
Publication of GB150135A publication Critical patent/GB150135A/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
    • G03B27/00—Photographic printing apparatus
    • G03B27/02—Exposure apparatus for contact printing

Abstract

150,135. Hansen, J. P. July 2, 1919. Contact printing-frames.-In printing-frames provided with springs c secured to the back a either at three points as in Fig. 1. or simply at two points as in Fig. 3, the pressure arm b has cam-shaped 'surfaces f which make contact with the spring with a view to distributing the pressure evenly and retaining the maximum resiliency of the springs.
GB1649819A 1919-07-02 1919-07-02 Photographic printing frames Expired GB150135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1649819A GB150135A (en) 1919-07-02 1919-07-02 Photographic printing frames

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1649819A GB150135A (en) 1919-07-02 1919-07-02 Photographic printing frames

Publications (1)

Publication Number Publication Date
GB150135A true GB150135A (en) 1920-09-02

Family

ID=10078407

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1649819A Expired GB150135A (en) 1919-07-02 1919-07-02 Photographic printing frames

Country Status (1)

Country Link
GB (1) GB150135A (en)

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