US20353A - Improvement in the production of electrotype-plates - Google Patents
Improvement in the production of electrotype-plates Download PDFInfo
- Publication number
- US20353A US20353A US20353DA US20353A US 20353 A US20353 A US 20353A US 20353D A US20353D A US 20353DA US 20353 A US20353 A US 20353A
- Authority
- US
- United States
- Prior art keywords
- plates
- electrotype
- improvement
- production
- mold
- 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
- 239000000428 dust Substances 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 241000209456 Plumbago Species 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 238000007654 immersion Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- ARUVKPQLZAKDPS-UHFFFAOYSA-L Copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 2
- 239000000899 Gutta-Percha Substances 0.000 description 2
- 229920000588 Gutta-percha Polymers 0.000 description 2
- 240000000342 Palaquium gutta Species 0.000 description 2
- 230000001680 brushing Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 2
- 230000003467 diminishing Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000012047 saturated solution Substances 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/38—Electroplating: Baths therefor from solutions of copper
Definitions
- the process invented by me and herein described will cause the deposit to take place uniformly over the whole surface of the mold at the instant ofits immersion in the batterysolntion, thus saving several hours time and insuring a deposit of uniform thickness.
- the wax mold or matrix is made in the usual manner and coated with plumbago. It is then placed upona table with the face upward, and a saturated solution of blue vitriol or sulphate of copper is sprinkled upon it, moistening nearly the entire surface.
- a fine sieve or a muslin bag metallic dust or fine powder preferring for this purpose the dust of cast-iron, which may be obtained under cutting and boring machines where castiron is worked, the finest dust being most suitable for this purpose.
- the dust, being sifted upon the plate is then distributed as unicopper is deposited in a thin film over the whole surface of the mold.
- This brushing or distribution of the fine particles of iron does not require more than five minutes for an area of one feet, at the end of which time the mold is found to be coated with a thin film of copr per over its whole surface, as above stated.
- the mold is now cleansed by immersion in pure water, or by allowing water to flow over it, thus removing the solution and dust. It may then be placed in the battery and the connections made as usual, when it will be found that the deposit commences on all parts of the surface at the same instant, thus insuring a uni form thickness of the metal and diminishing to a great extent the time required for exposure of the mold to the action of the battery.
Description
UNITED STATES PATENT OFFICE.
SILAS P. KNIGHT, OF NEW YORK, N. Y.
Specification forming part of Letters Patent No. 20,353, dated May 25, 1858.
To all whom it may concern:
Be it known that 1, Sims P. KNIGHT, of the city and State of New York, have invented an Improvementin MakingElectrotype-Plates and I do hereby declare that the following is a full and exact description of the process or art and the mode of conducting the same.
It is well known that when wax or gutta percha molds coated with plumbago are placed in a battery, and a deposit of copper or other metal made upon the surface of the mold, the action is at first slow and confined to particular parts of the surface, in some cases several hours being requisite to produce a uniform and unbroken metallic covering throughout its whole extent. It is also sometimes the case that the plumbago does not adhere perfectly to the wax surface of the mold, and in consequence the deposit is not uniform.
The process invented by me and herein described will cause the deposit to take place uniformly over the whole surface of the mold at the instant ofits immersion in the batterysolntion, thus saving several hours time and insuring a deposit of uniform thickness.
The wax mold or matrix is made in the usual manner and coated with plumbago. It is then placed upona table with the face upward, and a saturated solution of blue vitriol or sulphate of copper is sprinkled upon it, moistening nearly the entire surface. Upon this I scatter from a fine sieve or a muslin bag metallic dust or fine powder, preferring for this purpose the dust of cast-iron, which may be obtained under cutting and boring machines where castiron is worked, the finest dust being most suitable for this purpose. The dust, being sifted upon the plate, is then distributed as unicopper is deposited in a thin film over the whole surface of the mold. This brushing or distribution of the fine particles of iron does not require more than five minutes for an area of one feet, at the end of which time the mold is found to be coated with a thin film of copr per over its whole surface, as above stated. The mold is now cleansed by immersion in pure water, or by allowing water to flow over it, thus removing the solution and dust. It may then be placed in the battery and the connections made as usual, when it will be found that the deposit commences on all parts of the surface at the same instant, thus insuring a uni form thickness of the metal and diminishing to a great extent the time required for exposure of the mold to the action of the battery.
After the cleaning above named itis not nec essary'that the molds be placed immediately in the battery. They may be set aside and the deposit completed at any subsequent time.
I do not claim the deposit of a thin metallic coat or film upon the molds previous to immersing them in the battery; but
What I claim is- The treatment of theplumhago-coated molds with a solution of the sulphate of copper and the dust of iron, by which a metallic film is produced, as herein described.
SILAS P. KNIGHT.
In presence of-- JOHN FooTE, JAMES OHIcHEsTEE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20353A true US20353A (en) | 1858-05-25 |
Family
ID=2085207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US20353D Expired - Lifetime US20353A (en) | Improvement in the production of electrotype-plates |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US20353A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2683686A (en) * | 1952-03-04 | 1954-07-13 | Matsukawa Tatsuo | Method of manufacturing copperlead alloy coated graphite powder |
| US3367792A (en) * | 1963-09-16 | 1968-02-06 | Dow Chemical Co | Electroless plating on nonconducting surfaces |
-
0
- US US20353D patent/US20353A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2683686A (en) * | 1952-03-04 | 1954-07-13 | Matsukawa Tatsuo | Method of manufacturing copperlead alloy coated graphite powder |
| US3367792A (en) * | 1963-09-16 | 1968-02-06 | Dow Chemical Co | Electroless plating on nonconducting surfaces |
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