GB191201919A - Improvements in Photographic Screen Holders. - Google Patents

Improvements in Photographic Screen Holders.

Info

Publication number
GB191201919A
GB191201919A GB191201919DA GB191201919A GB 191201919 A GB191201919 A GB 191201919A GB 191201919D A GB191201919D A GB 191201919DA GB 191201919 A GB191201919 A GB 191201919A
Authority
GB
United Kingdom
Prior art keywords
springs
slots
inner ring
holder
rotated
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
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.)
HOUGHTONS Ltd
Original Assignee
HOUGHTONS Ltd
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 HOUGHTONS Ltd filed Critical HOUGHTONS Ltd
Application granted granted Critical
Publication of GB191201919A publication Critical patent/GB191201919A/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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Structure And Mechanism Of Cameras (AREA)

Abstract

1919. Houghtons, Ltd., and Edwards, W. A. Jan. 24. Lens fittings.-A holder for a colour-screen which is to be fitted on to the lens mount comprises two rings 1, 9, Figs. 1 and 2, between which the screen 8 is held by the flange 7, and three triangularly-disposed bow springs 16, each of which is jointed at one end 14 to the inner ring the other ends of the springs extending through slots 10, 11, 12 in the inner ring; and through slots 2, 3, 4 in the outer ring. The ends of the springs are cut with flanges which abut against the slots 10, 11, 12. The inner ring 9 can be rotated by a knob 13 which projects through a slot 6 of the outer ring, and when rotated the springs 16 are drawn from the slots 2, 3, 4 and are arched along the circumference as shown in dotted lines. In this position, the holder is slipped on to the lens mount and the inner ring rotated to release the springs which clamp the holder on to the mount.
GB191201919D 1912-01-24 1912-01-24 Improvements in Photographic Screen Holders. Expired GB191201919A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191201919T 1912-01-24

Publications (1)

Publication Number Publication Date
GB191201919A true GB191201919A (en) 1912-06-27

Family

ID=32569493

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191201919D Expired GB191201919A (en) 1912-01-24 1912-01-24 Improvements in Photographic Screen Holders.

Country Status (1)

Country Link
GB (1) GB191201919A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4776670A (en) * 1986-12-08 1988-10-11 U.S. Philips Corporation Optical assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4776670A (en) * 1986-12-08 1988-10-11 U.S. Philips Corporation Optical assembly

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