GB1221777A - Apparatus for holding sheet material flat - Google Patents
Apparatus for holding sheet material flatInfo
- Publication number
- GB1221777A GB1221777A GB1508467A GB1508467A GB1221777A GB 1221777 A GB1221777 A GB 1221777A GB 1508467 A GB1508467 A GB 1508467A GB 1508467 A GB1508467 A GB 1508467A GB 1221777 A GB1221777 A GB 1221777A
- Authority
- GB
- United Kingdom
- Prior art keywords
- face
- sheet
- bars
- base board
- 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
Links
- 239000003302 ferromagnetic material Substances 0.000 abstract 1
- 230000005291 magnetic effect Effects 0.000 abstract 1
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
- G03B27/00—Photographic printing apparatus
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/52—Details
- G03B27/58—Baseboards, masking frames, or other holders for the sensitive material
- G03B27/582—Baseboards, easels
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sheet Holders (AREA)
Abstract
1,221,777. Supporting photographic sheets. PATERSON PRODUCTS Ltd. July 3, 1968, No. 15084/ 67. Heading G2A. A sheet of photographic copy paper 4 is located and held on a flat base board 1, of ferromagnetic material, such as the easel of an enlarger, by members which have one face against the board and another face abutting one edge of the sheet, the members being, or including, permanent magnets. As shown in Fig. 1, four bars 2 lie on the base board, with their inner faces against the edges of the sheet. The said inner face may be at an angle of more than 90 degrees to the face in contact with the base board. The inner face may be roughened, and the bars 2 may have magnetic inserts 3. Two adjacent bars are joined to form an L-shaped member, as in Fig.2, which can hinge at the joint 15, and which also has a linkage 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1508467A GB1221777A (en) | 1968-07-03 | 1968-07-03 | Apparatus for holding sheet material flat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1508467A GB1221777A (en) | 1968-07-03 | 1968-07-03 | Apparatus for holding sheet material flat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1221777A true GB1221777A (en) | 1971-02-10 |
Family
ID=10052747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1508467A Expired GB1221777A (en) | 1968-07-03 | 1968-07-03 | Apparatus for holding sheet material flat |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1221777A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4108548A (en) * | 1977-09-12 | 1978-08-22 | Barbara Jean Hawkins | Device for exposing photographically sensitized sheets |
| GB2203860A (en) * | 1987-04-24 | 1988-10-26 | Eskofot As | A reproduction camera |
-
1968
- 1968-07-03 GB GB1508467A patent/GB1221777A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4108548A (en) * | 1977-09-12 | 1978-08-22 | Barbara Jean Hawkins | Device for exposing photographically sensitized sheets |
| GB2203860A (en) * | 1987-04-24 | 1988-10-26 | Eskofot As | A reproduction camera |
| US4887126A (en) * | 1987-04-24 | 1989-12-12 | Eskofot | Reproduction camera |
| GB2203860B (en) * | 1987-04-24 | 1991-01-02 | Eskofot As | A reproduction camera |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NO149273C (en) | ALBUM SHEET WITH INSERT POCKETS FOR PHOTOGRAPHIC PAPER PICTURES AND SIMILAR ARTICLES | |
| US3913740A (en) | Folder for overhead projector and easel use | |
| NO136345C (en) | THREE-COMPONENT SYSTEM FOR PRINTED COPY SHEETS WITH A HIDDEN IMAGE AND FOR DEVELOPING THE HIDDEN IMAGE ON THE COPY SHEETS | |
| GB1419508A (en) | Sheet stack receptacle | |
| SE338500B (en) | ||
| GB1221777A (en) | Apparatus for holding sheet material flat | |
| GB1073155A (en) | Improvements in flexible transparent photographic carrier units | |
| GB540700A (en) | Improvements in or relating to photographic enlarging apparatus | |
| CH530024A (en) | Copy frame with glass plate for holding photosensitive paper | |
| AU6344873A (en) | Machines for separating sheets in xerographic printing and other sheet handling mechanisms | |
| GB751274A (en) | Photograph album leaf | |
| MX144745A (en) | IMPROVEMENTS IN REGISTRY AND COPY SHEETS | |
| ES163225U (en) | Didactic composition game. (Machine-translation by Google Translate, not legally binding) | |
| GB1206812A (en) | Photographic masking frames | |
| FR2411090A1 (en) | Calendar with rectangular sheet base - having year divisions printed near one side leaving space for hinging picture sheets | |
| ES212383U (en) | Poster container for advertising objects. (Machine-translation by Google Translate, not legally binding) | |
| ES200582U (en) | Portafotos mural. (Machine-translation by Google Translate, not legally binding) | |
| CA768597A (en) | Method and device for interconnecting thin paper webs or sheets along defined areas | |
| GB911768A (en) | Improvements in or relating to albums for photographic transparencies | |
| GB1198806A (en) | Improvements in Document Carriers for a Copying Machine | |
| IT958178B (en) | COPYING DEVICE FOR SHEET ORIGINAL ORIGINALS AND BIGGER ORIGINALS SUCH AS BOOKS | |
| FR1499134A (en) | Document in paper, cardboard, or similar, with incorporated photographic film and viewer | |
| ES262507U (en) | Image presentation device. (Machine-translation by Google Translate, not legally binding) | |
| ES165156U (en) | Device holder of leaf sheets. (Machine-translation by Google Translate, not legally binding) | |
| ES162514U (en) | Children's card (Machine-translation by Google Translate, not legally binding) |