GB209661A - Improvements in announcement slides for use in optical projection apparatus - Google Patents

Improvements in announcement slides for use in optical projection apparatus

Info

Publication number
GB209661A
GB209661A GB1250623A GB1250623A GB209661A GB 209661 A GB209661 A GB 209661A GB 1250623 A GB1250623 A GB 1250623A GB 1250623 A GB1250623 A GB 1250623A GB 209661 A GB209661 A GB 209661A
Authority
GB
United Kingdom
Prior art keywords
hands
plate
slides
announcement
projection apparatus
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
GB1250623A
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 GB1250623A priority Critical patent/GB209661A/en
Publication of GB209661A publication Critical patent/GB209661A/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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/64—Means for mounting individual pictures to be projected, e.g. frame for transparency

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)

Abstract

209,661. Terry, J. F. L. May 18, 1923. Lantern slides.-In a slide of the kind having a clock dial 3 and hands 5 movable to indicate any selected time, the hands are mounted on a pin 4 passing through a glass plate 1 and a spring washer 7 is interposed between the hands and the plate to cause the hands to remain in any set position. A second glass plate 2 is mounted behind the plate 1 and spaced therefrom to accommodate the head 8 of the pins 4. The dial may be carried by either plate.
GB1250623A 1923-05-18 1923-05-18 Improvements in announcement slides for use in optical projection apparatus Expired GB209661A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1250623A GB209661A (en) 1923-05-18 1923-05-18 Improvements in announcement slides for use in optical projection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1250623A GB209661A (en) 1923-05-18 1923-05-18 Improvements in announcement slides for use in optical projection apparatus

Publications (1)

Publication Number Publication Date
GB209661A true GB209661A (en) 1924-01-17

Family

ID=10005842

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1250623A Expired GB209661A (en) 1923-05-18 1923-05-18 Improvements in announcement slides for use in optical projection apparatus

Country Status (1)

Country Link
GB (1) GB209661A (en)

Similar Documents

Publication Publication Date Title
GB209661A (en) Improvements in announcement slides for use in optical projection apparatus
GB772228A (en) A timepiece face having a changing decoration
GB486295A (en) Improvements in roses or perforated nozzles
GB262426A (en)
US1553222A (en) Time dial for globes
GB359786A (en) Improvements in motor-cycle and like lamps
GB191640A (en) Improvements in optical projection screens
GB338344A (en) Improved moving advertising apparatus
GB167098A (en) Improvements in watch cases
CA214984A (en) Watch holder
CA298306A (en) Moulded finger plate for dial switches
GB185321A (en) Improvements in clocks
GB280200A (en) Improvements in or relating to coin freed telephone apparatus
CH289117A (en) Cuckoo clock with musical mechanism.
CA215983A (en) Clock controlled mechanism
CA224258A (en) Dial for timepieces
CA224189A (en) Illuminated license plate holder
GB249338A (en) Improvements in or relating to illuminated clocks
GB169307A (en) Improvements in means for removably securing a watch or clock or similar instrument in position on a vehicle or other object
CA228421A (en) Illuminated number plate holder
ES6809U (en) New electrical switch (Machine-translation by Google Translate, not legally binding)
FR1046988A (en) Glasses with lenses mounted on barrettes
CA223783A (en) Ticket holder
CA222740A (en) Watch face cover
FR995287A (en) Spring for watch barrel