US240262A - Phototypography - Google Patents
Phototypography Download PDFInfo
- Publication number
- US240262A US240262A US240262DA US240262A US 240262 A US240262 A US 240262A US 240262D A US240262D A US 240262DA US 240262 A US240262 A US 240262A
- Authority
- US
- United States
- Prior art keywords
- wood
- block
- preparation
- phototypography
- water
- 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 - Lifetime
Links
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 24
- 238000002360 preparation method Methods 0.000 description 16
- 239000002023 wood Substances 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000001828 Gelatine Substances 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 6
- 229920000159 gelatin Polymers 0.000 description 6
- 235000019322 gelatine Nutrition 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- SQGYOTSLMSWVJD-UHFFFAOYSA-N Silver nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004534 enameling Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 230000001235 sensitizing Effects 0.000 description 2
- 231100000202 sensitizing Toxicity 0.000 description 2
- 230000002087 whitening Effects 0.000 description 2
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/015—Apparatus or processes for the preparation of emulsions
Definitions
- This invention relates to improvements in the art of producing photographic pictures upon wood, especially such as are to assist en gravers.
- the preparation of the wood for this purpose has been hitherto accomplished by processes both expensive and tedious, and the purpose of this invention is to avoid the difficulties heretofore met with and provide a process whereby a photographic picture of a very superior character can be obtained at a merely nominal price.
- Ablock of wood of proper quality and proper size is first coated with white watercolor and water, which are rubbed over the wood until a white and perfectly smooth surface is produced, and the excess is then removed.
- the wood After the wood has been whitened and smoothed it is then treated with the following solution: I take five grains of citric acid, five grains of chloride of ammonium, and twelve grains of gelatine, and dissolve and thoroughlymix them in one ounce of water. I The solution is heated, and it is then poured over the surface of the block. It is left on the block from three to five minutes, and the block is then allowed to dry.
- Nitrate of silver is dissolved in water in the proportion of forty grains of the former to one ounce of the latter. The solution is then filtered through paper. and the block is treated with it in a manner similar to that described above.- After the block has been subjected to the action of the latter solution for two or three minutes it is dried in the dark, as the block is now sensitive to light. After it is dry it is treated for about ten minutes with ammonia, and it is then ready to receive the impression from the negative. After the impression has been taken and the negative removed the block is washed and subjected to a hypo-bath for about five minutes, after which it is again washed, and is then ready for the engraver.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Description
UNITED STATES PATENT OF ICE.
JOHN N. LUTZ, OF PORTSMOUTH, OHIO.
PHOTOTYPOGRAPHY.
SPECIFICATION forming part of Letters Patent No. 240,262, dated April 19, 1881.
Application filed January 11 1881. (No specimens.)
To all whom tt may concern:
Be it known that I, JOHN N. LUTZ, a citizen of the United States, residing at Portsmouth, in the county of Scioto and State of Ohio, have invented certain new and useful Improvements in Phototypography; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
This invention relates to improvements in the art of producing photographic pictures upon wood, especially such as are to assist en gravers. The preparation of the wood for this purpose has been hitherto accomplished by processes both expensive and tedious, and the purpose of this invention is to avoid the difficulties heretofore met with and provide a process whereby a photographic picture of a very superior character can be obtained at a merely nominal price.
Ablock of wood of proper quality and proper size is first coated with white watercolor and water, which are rubbed over the wood until a white and perfectly smooth surface is produced, and the excess is then removed. After the wood has been whitened and smoothed it is then treated with the following solution: I take five grains of citric acid, five grains of chloride of ammonium, and twelve grains of gelatine, and dissolve and thoroughlymix them in one ounce of water. I The solution is heated, and it is then poured over the surface of the block. It is left on the block from three to five minutes, and the block is then allowed to dry.
One great advantage incident to the above solution is that it can be kept for a long time, and can therefore be prepared in large quantities and can be put upon the market as a manufacture.
After the block is dry it is treated with the following preparation: Nitrate of silver is dissolved in water in the proportion of forty grains of the former to one ounce of the latter. The solution is then filtered through paper. and the block is treated with it in a manner similar to that described above.- After the block has been subjected to the action of the latter solution for two or three minutes it is dried in the dark, as the block is now sensitive to light. After it is dry it is treated for about ten minutes with ammonia, and it is then ready to receive the impression from the negative. After the impression has been taken and the negative removed the block is washed and subjected to a hypo-bath for about five minutes, after which it is again washed, and is then ready for the engraver.
The most important part of my process is that comprised in the second step, or the application of chloride of ammonium, gelatine, water, and citric acid, 850. By means of this preparation I obtain a much clearer impression than can be procured by the ordinary agents. It keeps the silver from sinking while the light is acting through the negative. It also gives a vigor and brilliancy to the picture, producing very clear white in the lighter portion and deep black in the shadow.
I do not wish to be understood as claiming, broadly, the use of citric acid alone as an ingredient in preparations for photographing upon wood for engraving, as I am-aware that various acids have been heretofore used for this purpose; but I believe myself to be the first to have employed the hereinbefore-described preparations in the exact manner and in the sequence which has been set forth.
What I claim i The herein-described process for preparing Wood to receive a photographic impression for engraving, which consists in first applying to the surface of the wood an enameling or whitening preparation, then a preparation consisting of chloride of ammonium, citric acid, gelatine, and Water, insubstantially the proportions specified, then a silver sensitizing preparation, and finally ammonia, substantially in the manner and for the purposes set forth.
In testimony whereof I affix my signature in presence of two witnesses.
JOHN N. LUTZ. Witnesses:
I. N. ZOELLNER, O. A. ZOELLNER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US240262A true US240262A (en) | 1881-04-19 |
Family
ID=2309601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US240262D Expired - Lifetime US240262A (en) | Phototypography |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US240262A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2653871A (en) * | 1949-11-14 | 1953-09-29 | Bemis Bro Bag Co | Preparation of engraved rubber printing plates |
| US2766119A (en) * | 1952-01-19 | 1956-10-09 | Horizons Inc | Aluminum photographic surfaces |
| US2888347A (en) * | 1955-05-17 | 1959-05-26 | Gen Aniline & Film Corp | High-speed print-out emulsions |
-
0
- US US240262D patent/US240262A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2653871A (en) * | 1949-11-14 | 1953-09-29 | Bemis Bro Bag Co | Preparation of engraved rubber printing plates |
| US2766119A (en) * | 1952-01-19 | 1956-10-09 | Horizons Inc | Aluminum photographic surfaces |
| US2888347A (en) * | 1955-05-17 | 1959-05-26 | Gen Aniline & Film Corp | High-speed print-out emulsions |
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