GB190904456A - Improvements in and relating to Double Opera-glasses and the like. - Google Patents

Improvements in and relating to Double Opera-glasses and the like.

Info

Publication number
GB190904456A
GB190904456A GB190904456DA GB190904456A GB 190904456 A GB190904456 A GB 190904456A GB 190904456D A GB190904456D A GB 190904456DA GB 190904456 A GB190904456 A GB 190904456A
Authority
GB
United Kingdom
Prior art keywords
opera
glasses
relating
double
prisms
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
Arthur Levy
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 GB190904456A publication Critical patent/GB190904456A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight

Abstract

4456. LÚvy, A. Feb. 23. Opera-glasses.-To facilitate the cleaning of the prisms of binocular opera-glasses, the protecting-tubes are made in two parts e, f, capable of sliding past one another, and removably secured to the end plates c, d, respectively, so that the upper and lower prisms can be uncovered in turn.
GB190904456D 1909-02-23 1909-02-23 Improvements in and relating to Double Opera-glasses and the like. Expired GB190904456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190904456T 1909-02-23

Publications (1)

Publication Number Publication Date
GB190904456A true GB190904456A (en) 1909-04-08

Family

ID=32442148

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190904456D Expired GB190904456A (en) 1909-02-23 1909-02-23 Improvements in and relating to Double Opera-glasses and the like.

Country Status (1)

Country Link
GB (1) GB190904456A (en)

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