GB509370A - Improvements in or relating to slides for projecting purposes - Google Patents

Improvements in or relating to slides for projecting purposes

Info

Publication number
GB509370A
GB509370A GB19432/38A GB1943238A GB509370A GB 509370 A GB509370 A GB 509370A GB 19432/38 A GB19432/38 A GB 19432/38A GB 1943238 A GB1943238 A GB 1943238A GB 509370 A GB509370 A GB 509370A
Authority
GB
United Kingdom
Prior art keywords
cup
glass plates
held
shaped members
members
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
GB19432/38A
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
Publication of GB509370A publication Critical patent/GB509370A/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)
  • Endoscopes (AREA)

Abstract

509,370. Lantern slides. WHITEFORD, C. L. June 30, 1938, No. 19432. Convention date, June 30, 1937. Drawings to Specification. [Class 98 (ii)] A lantern slide structure comprises a pair of cup-shaped members having telescoping edge portions and cutaway portions forming picture openings and a pair of glass plates between which the film is held, the inner edge of one of the cup-shaped members being turned inwards to engage one of the glass plates. Depressions may be formed in one of the cup-shaped members for receiving indicia and may abut the glass plate adjacent thereto. To secure the members together interengaging tongues, may be provided. The Specification as open to inspection under Sect. 91, describes also constructions in which the glass plates are held in place by inturned tabs on the outer members and in which these are held together by joining a depressed part on one or more edges of one member and bending a portion of the edge of the other member into this. This subject-matter does not appear in the Specification as accepted.
GB19432/38A 1937-06-30 1938-06-30 Improvements in or relating to slides for projecting purposes Expired GB509370A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US509370XA 1937-06-30 1937-06-30

Publications (1)

Publication Number Publication Date
GB509370A true GB509370A (en) 1939-07-14

Family

ID=21968434

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19432/38A Expired GB509370A (en) 1937-06-30 1938-06-30 Improvements in or relating to slides for projecting purposes

Country Status (1)

Country Link
GB (1) GB509370A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746608C (en) * 1942-01-17 1944-08-16 Hans Gastrow Dipl Ing Version for taking film images
DE1122281B (en) * 1959-12-07 1962-01-18 Carl Braun Slide projector whose magazine can be moved lengthways in the projector housing by means of a feed gear

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746608C (en) * 1942-01-17 1944-08-16 Hans Gastrow Dipl Ing Version for taking film images
DE1122281B (en) * 1959-12-07 1962-01-18 Carl Braun Slide projector whose magazine can be moved lengthways in the projector housing by means of a feed gear

Similar Documents

Publication Publication Date Title
GB509370A (en) Improvements in or relating to slides for projecting purposes
CA360400A (en) Projection screen
CA360417A (en) Projection screen
CA364923A (en) Projection printer
AU100348B2 (en) Improved collapsible oven
CA327329A (en) Projection screen
CA359616A (en) Corrugated fastener
CA360019A (en) Light projector
CA362822A (en) Colour-forming developer
CA362823A (en) Colour-forming developer
CA357971A (en) Paper fastener
CA358295A (en) Mixer
CA358818A (en) Incinerator
AU105101B2 (en) Image dissector scanning aperture arrangement
CA358098A (en) Gas air mixer
CA355715A (en) Colour photographic material
CA362393A (en) Joint assembly
CA355517A (en) Carbon black manufacture
CA367877A (en) Goffered film reproduction and projection
CA356594A (en) Colour photography
CA357617A (en) Colour photography
CA357742A (en) Colour photography
CA357944A (en) Colour photography
CA358213A (en) Colour photography
AU103858B2 (en) Multipactor