GB1327826A - File for use in storing and displaying transparencies - Google Patents
File for use in storing and displaying transparenciesInfo
- Publication number
- GB1327826A GB1327826A GB1327826DA GB1327826A GB 1327826 A GB1327826 A GB 1327826A GB 1327826D A GB1327826D A GB 1327826DA GB 1327826 A GB1327826 A GB 1327826A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transparencies
- transparency
- file
- cover
- page
- 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
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
-
- 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
- G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action
Abstract
1327826 Transparency holders T J GARDENER 17 April 1972 [16 April 1971] 9696/71 Heading G2C A file for holding transparencies, any selected one of which may be positioned for projection, comprises two covers 1 and 2 connected by a hinge 3, cover 1 having a transparent window 6. A protective cover page 4 is also joined along the hinge 3. A series of transparencies 5 each has a flap 12 at one end which is engaged with a swivel pin 9, the transparencies also having locating holes 10 which engage with pins 7 fixed to the cover 1. Thus when the file is opened as shown in Fig.1, the transparencies may be located one by one over the window 6 for projection by an overhead projector on to a screen. The transparency may then be pivoted out of the way, and the next transparency positioned for viewing. In the modification of Fig.2 (not shown), the protective page 4 is integral with the cover 2, and the transparency may be folded away underneath the page 4.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB969671 | 1972-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1327826A true GB1327826A (en) | 1973-08-22 |
Family
ID=9877003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1327826D Expired GB1327826A (en) | 1972-04-17 | 1972-04-17 | File for use in storing and displaying transparencies |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1327826A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2124153A (en) * | 1982-05-21 | 1984-02-15 | Mueller Nielsen Bjarne | Protective holder for overhead projector transparencies |
-
1972
- 1972-04-17 GB GB1327826D patent/GB1327826A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2124153A (en) * | 1982-05-21 | 1984-02-15 | Mueller Nielsen Bjarne | Protective holder for overhead projector transparencies |
| US4548487A (en) * | 1982-05-21 | 1985-10-22 | Nielsen Bjarne M | Protecting device for transparencies |
| US4679923A (en) * | 1982-05-21 | 1987-07-14 | Nielsen Bjarne M | Protecting device for transparencies |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee | ||
| 728C | Application made for restoration (sect. 28/1977) | ||
| 728A | Order made restoring the patent (sect. 28/1977) | ||
| PE20 | Patent expired after termination of 20 years |