US3686784A - Latern slide cover - Google Patents

Latern slide cover Download PDF

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Publication number
US3686784A
US3686784A US78671A US3686784DA US3686784A US 3686784 A US3686784 A US 3686784A US 78671 A US78671 A US 78671A US 3686784D A US3686784D A US 3686784DA US 3686784 A US3686784 A US 3686784A
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United States
Prior art keywords
frame
leaf
sides
inner edge
joined
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Expired - Lifetime
Application number
US78671A
Inventor
Karl Hirsch
Wilhelm Riedl
Siegmund Winkler
Hans Pirker
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.)
HIRSCH PLASTIK
HIRSCH PLASTIKWAREN KARL HIRSCH oHG Firma
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HIRSCH PLASTIK
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Publication date
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    • 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

Definitions

  • a first leaf is joined to Said frame at [58] Field 61 Search ..40/159, 158 B, 158, 16 four sides of said inner edge-
  • a Second leaf isjoined to said frame only at three sides of said inner edge.
  • This invention relates to a lantern slide cover and it is an object of the invention to provide improvements in the packaging and use (viewing) of lantern slides.
  • the lantern slide cover according to the invention comprises two leaves, which are joined to the frame adjacent to its inner edge, which defines an opening, one leaf being joined to the frame at four sides of said edge and the other leaf being joined to said frame only at three sides of said edge, whereby a pocket is formed for accommodating the lantern slide.
  • the frame consists of opaque material, one leaf consists of transparent material and the other leaf consists of translucent and preferably dull material.
  • the leaf of transparent material is provided on the viewing side of the other leaf and is joined to the rear side of the frame at four sides of the inner edge defining the opening of the frame whereas the leaf of dull material is somewhat offset from the transparent leaf and joined to the rear side of the frame only at three sides of said edge.
  • the frame and the two leaves are made from hard polyvinylchloride and are joined by welding.
  • the lantern slide cover according to the invention can be made particularly easily from hard polyvinylchloride sheeting. The expenditure of material is small so that the manufacturing costs are low.
  • the lantern slide cover according to the invention Special advantages result from the use of the lantern slide cover according to the invention because a lantern slide can very easily be inserted into and removed from the cover. On the other hand, the cover slides are safely accommodated in the cover and are protected against damage and substantially sealed against an ingress of dust. The viewing of the slides is also improved because the lantern slide cover according to the invention holds the slide in a plane and the leaves which define the pocket are in planar contact with the slide, without irregularities, so that there will be no distortion. The perfectly planar position of the slide and the diffuse light which is due to the use of the leaf of dull material enable an exact examination of the lantern slides. Another advantage resides in that the lantern slide cover according to the invention is particularly flat and much space can be saved when the slides are kept, e.g., in card index boxes.
  • Fl is a er ctive front view and a pe sp cfive rear view.
  • the transparency cover according to the invention consists of a frame 1, which is made from opaque material, preferably hard polyvinylchloride sheeting.
  • the frame 1 has an opening 2.
  • Leaves 3 and 4 are secured to the edge of said opening on opposite sides of the frame.
  • the leaf 3 may consist of a transparent polyvinylchloride sheeting and may be welded to the underside of the frame 1 near its opening on four sides.
  • the leaf 4 may consist of translucent and preferably dull material or a material having a milky appearance, e.g., a suitable polyvinylchloride sheeting, and is joined to the frame only on three sides by a seam weld 6 somewhat offset from the welded joint of the leaf 3.
  • the leaves 3 and 4 thus define a slip-in opening 5 for lantern slides.
  • the lantern slide cover according to the invention may be made in any desired size. Special advantages will be afforded by large-size lantern slide covers.
  • a lantern slide cover comprising a frame having an inner edge which has four sides defining an opening
  • said frame consists of opaque material
  • said first leaf consists of a transparent material
  • said second leaf consists of a dull translucent material of milky appearance
  • said frame has a viewing side and a rear side
  • said first leaf is joined to said rear side of said frame adjacent said four sides of said inner edge
  • said second leaf is secured to said rear side of said frame at only said three sides of said inner edge and on the side of said first leaf which is opposite to said viewing side of said frame
  • said second leaf is slightly offset from said first leaf.

Abstract

A frame has an inner edge, which has four sides defining an opening. A first leaf is joined to said frame at four sides of said inner edge. A second leaf is joined to said frame only at three sides of said inner edge.

Description

United States Patent Hirsch et al. Aug. 29, 1972 54] LATERN SLIDE COVER [56] References Cited [72] Inventors: Karl Hirsch, Klagenfurt; Wilhelm UNITED STATES PATENTS Riedl, Klagenfurt; Siegmund Winkler, Wolfnitz; Hans Pirke 1,210,215 12/1916 Satterlee ..40/158 B X Portschach, all of Austria 1,136,163 4/1915 OBn'en ..40/159 1,477,131 12/1923 Kulik ..40/158 B [73] Assgnee' i z ggf fi' fi' f 1,810,649 6/1931 Elliot ..40/159 UX 3,339,303 9/1967 Anderson et a1. ..40/159 3,491,471 1/1970 Semple ..40/159 22 Filed: Oct. 7, 1970 [21] Appl. N0.: 78,671 Primary Examiner-Robert W. Michell Assistant Examiner-Wenceslao J. Contreras 30 Foreign Application Priority Data Mmmgue Oct. 20, 1969 Austria ..4A 9880/69 57 ABSTRACT 52 us. (:1 ..40/159 A frame has an inner edge which has four Sides defin- 51 1m. (:1 ..G09i 1/10 ing an Opening A first leaf is joined to Said frame at [58] Field 61 Search ..40/159, 158 B, 158, 16 four sides of said inner edge- A Second leaf isjoined to said frame only at three sides of said inner edge.
2 Claims, 2 Drawing Figures PATENTEDwsza 1912 I 3,686,784
INVENTORJ me mwpmu.
BY ww A RNEY LATERN SLIDE COVER This invention relates to a lantern slide cover and it is an object of the invention to provide improvements in the packaging and use (viewing) of lantern slides.
Lantern slides, particularly in large sizes above 60x90 millimeters have previously been packaged and kept in simple slip-in covers or in carton frames provided with a protective cover. These carton frames involve a more complicated manipulation. It is the purpose of the carton frames to eliminate a dazzling of the viewer of the slide by a light source or from illuminating boxes or the like and to facilitate the checking of the lantern slides. The mounting of the slides on the frames and the insertion of the frames into a protective cover are complicated and require a plurality of manipulations. More particularly, it is difficult to replace lantern slides which have been accommodated in the previous manner.
To eliminate the disadvantages which have been pointed out, the lantern slide cover according to the invention comprises two leaves, which are joined to the frame adjacent to its inner edge, which defines an opening, one leaf being joined to the frame at four sides of said edge and the other leaf being joined to said frame only at three sides of said edge, whereby a pocket is formed for accommodating the lantern slide.
According to the invention, the frame consists of opaque material, one leaf consists of transparent material and the other leaf consists of translucent and preferably dull material.
In one embodiment of the invention, the leaf of transparent material is provided on the viewing side of the other leaf and is joined to the rear side of the frame at four sides of the inner edge defining the opening of the frame whereas the leaf of dull material is somewhat offset from the transparent leaf and joined to the rear side of the frame only at three sides of said edge.
In one embodiment, the frame and the two leaves are made from hard polyvinylchloride and are joined by welding.
The lantern slide cover according to the invention can be made particularly easily from hard polyvinylchloride sheeting. The expenditure of material is small so that the manufacturing costs are low.
Special advantages result from the use of the lantern slide cover according to the invention because a lantern slide can very easily be inserted into and removed from the cover. On the other hand, the cover slides are safely accommodated in the cover and are protected against damage and substantially sealed against an ingress of dust. The viewing of the slides is also improved because the lantern slide cover according to the invention holds the slide in a plane and the leaves which define the pocket are in planar contact with the slide, without irregularities, so that there will be no distortion. The perfectly planar position of the slide and the diffuse light which is due to the use of the leaf of dull material enable an exact examination of the lantern slides. Another advantage resides in that the lantern slide cover according to the invention is particularly flat and much space can be saved when the slides are kept, e.g., in card index boxes.
Details of the invention will be explained more fully with reference to the drawing, which illustrates by way of example an embodiment of the lantern slide cover according to the invention.
Fl is a er ctive front view and a pe sp cfive rear view.
The transparency cover according to the invention consists of a frame 1, which is made from opaque material, preferably hard polyvinylchloride sheeting. The frame 1 has an opening 2. Leaves 3 and 4 are secured to the edge of said opening on opposite sides of the frame. The leaf 3 may consist of a transparent polyvinylchloride sheeting and may be welded to the underside of the frame 1 near its opening on four sides. The leaf 4 may consist of translucent and preferably dull material or a material having a milky appearance, e.g., a suitable polyvinylchloride sheeting, and is joined to the frame only on three sides by a seam weld 6 somewhat offset from the welded joint of the leaf 3.
The leaves 3 and 4 thus define a slip-in opening 5 for lantern slides.
The lantern slide cover according to the invention may be made in any desired size. Special advantages will be afforded by large-size lantern slide covers.
The invention has been explained with reference to the drawing only by way of example an is not restricted to the details which are illustrated and described.
What is claimed is:
1. A lantern slide cover, comprising a frame having an inner edge which has four sides defining an opening,
a first leaf joined on one side of said frame adjacent to four sides of said inner edge,
and a second leaf joined on said one side of said frame adjacent only to three sides of said inner edge,
said frame and said first and second leaves defining a pocket for accomodating a lantern slide,
said frame consists of opaque material,
said first leaf consists of a transparent material,
said second leaf consists of a dull translucent material of milky appearance,
said frame has a viewing side and a rear side,
said first leaf is joined to said rear side of said frame adjacent said four sides of said inner edge, said second leaf is secured to said rear side of said frame at only said three sides of said inner edge and on the side of said first leaf which is opposite to said viewing side of said frame, and
said second leaf is slightly offset from said first leaf.
2. A lantern slide cover as set forth in claim 1, in which said frame and said two leaves consist of hard polyvinylchloiide and are joined by welding at a position spaced from said inner edge of said opening.

Claims (2)

1. A lantern slide cover, comprising a frame having an inner edge which has four sides defining an opening, a first leaf joined on one side of said frame adjacent to four sides of said inner edge, and a second leaf joined on said one side of said frame adjacent only to three sides of said inner edge, said frame and said first and second leaves defining a pocket for accomodating a lantern slide, said frame consists of opaque material, said first leaf consists of a transparent material, said second leaf consists of a dull translucent material of milky appearance, said frame has a viewing side and a rear side, said first leaf is joined to said rear side of said frame adjacent said four sides of said inner edge, said second leaf is secured to said rear side of said frame at only said three sides of said inner edge and on the side of said first leaf which is opposite to said viewing side of said frame, and said second leaf is slightly offset from said first leaf.
2. A lantern slide cover as set forth in claim 1, in which said frame and said two leaves consist of hard polyvinylchloride and are joined by welding at a position spaced from said inner edge of said opening.
US78671A 1969-10-20 1970-10-07 Latern slide cover Expired - Lifetime US3686784A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT988069A AT300556B (en) 1969-10-20 1969-10-20 Slide protection cover

Publications (1)

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US3686784A true US3686784A (en) 1972-08-29

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US78671A Expired - Lifetime US3686784A (en) 1969-10-20 1970-10-07 Latern slide cover

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AT (1) AT300556B (en)
CH (1) CH497713A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5222315A (en) * 1991-09-19 1993-06-29 Signs & Glassworks, Inc. Picture display frame
US5521420A (en) * 1992-05-27 1996-05-28 Micro Technology Partners Fabricating a semiconductor with an insulative coating
EP0801323A1 (en) * 1996-04-09 1997-10-15 Crosfield Electronics Limited Improvements in mounting of film transparencies
US5713148A (en) * 1994-09-21 1998-02-03 Chromium Graphics Inc. Frame with picture holder

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1136163A (en) * 1914-06-20 1915-04-20 Charles K Callahan Envelop or the like.
US1210215A (en) * 1914-06-03 1916-12-26 Francis Le Roy Satterlee Jr Support for x-ray negatives.
US1477131A (en) * 1923-12-11 X-ray mount
US1810649A (en) * 1930-02-25 1931-06-16 George S Elliott Display envelope
US3339303A (en) * 1965-01-29 1967-09-05 Microseal Corp Film storage card
US3491471A (en) * 1968-05-09 1970-01-27 Harry F Semple Aperture card with loading slit in card

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1477131A (en) * 1923-12-11 X-ray mount
US1210215A (en) * 1914-06-03 1916-12-26 Francis Le Roy Satterlee Jr Support for x-ray negatives.
US1136163A (en) * 1914-06-20 1915-04-20 Charles K Callahan Envelop or the like.
US1810649A (en) * 1930-02-25 1931-06-16 George S Elliott Display envelope
US3339303A (en) * 1965-01-29 1967-09-05 Microseal Corp Film storage card
US3491471A (en) * 1968-05-09 1970-01-27 Harry F Semple Aperture card with loading slit in card

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5222315A (en) * 1991-09-19 1993-06-29 Signs & Glassworks, Inc. Picture display frame
US5521420A (en) * 1992-05-27 1996-05-28 Micro Technology Partners Fabricating a semiconductor with an insulative coating
US5713148A (en) * 1994-09-21 1998-02-03 Chromium Graphics Inc. Frame with picture holder
EP0801323A1 (en) * 1996-04-09 1997-10-15 Crosfield Electronics Limited Improvements in mounting of film transparencies

Also Published As

Publication number Publication date
AT300556B (en) 1972-07-25
DE1959890A1 (en) 1971-06-24
CH497713A (en) 1970-10-15
DE1959890B2 (en) 1975-07-17

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