US3537958A - Method of manufacturing etched metallic charm - Google Patents
Method of manufacturing etched metallic charm Download PDFInfo
- Publication number
- US3537958A US3537958A US676717A US3537958DA US3537958A US 3537958 A US3537958 A US 3537958A US 676717 A US676717 A US 676717A US 3537958D A US3537958D A US 3537958DA US 3537958 A US3537958 A US 3537958A
- Authority
- US
- United States
- Prior art keywords
- charm
- metallic
- negative
- charms
- screened
- 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
- 238000004519 manufacturing process Methods 0.000 title description 8
- 239000000243 solution Substances 0.000 description 6
- 238000009713 electroplating Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 238000004040 coloring Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 241001286408 Gretna Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S205/00—Electrolysis: processes, compositions used therein, and methods of preparing the compositions
- Y10S205/918—Use of wave energy or electrical discharge during pretreatment of substrate or post-treatment of coating
Definitions
- ABSTRACT OF THE DISCLOSURE A method of making a charm from a photograph by making a screened negative from the photograph, making a screened positive from the negative, exposing the positive on a photo-sensitized metallic plate to produce a negative image, etching the negative image on the printed plate, electroplating the etched plate, and darkening the etched portion of the plate.
- This invention relates to a method of manufacturing etched metallic articles, and more particularly to the manufacture of metallic charms from photographic images.
- Miniature charm designs have always been a popular item of jewelry for personal wear.
- Such charms may be formed as three-dimensional replicas of animals, musical instruments and other articles of interest, or they may be in the form of fiat discs having appropriate inscriptions or figures in relief thereon.
- the method of the present invention is directed to the manufacture of this latter class of charms.
- the charms manufactured in accordance with the principles of the present invention differ from charms conventionally available in that a photographic image is reproduced with life-like clarity on a selected background design. It has been known in the past to utilize line negatives to reproduce images on charms and medallions, but this method does not allow for any gradation in intensity among the tones reproduced.
- the present invention permits a complete range in gradation of tones to be reproduced on the metallic backing selected and thereby brings out in the charm all of the subtleties of shading present in the original photographic image.
- a screened, or halftone, positive is utilized in the steps of manufacturing an etched metallic charm from a photographic image to produce a surface image on the metallic base having tones from the very lightest to solid black. In this manner a charm can be made with a faithful reproduction of any desired photographic image.
- the charms of the present invention constitute substantially flat, disc-like structures similar to conventional charms presently used on bracelets and necklaces.
- the charms comprise a metal base having an etched border design with a central image transferred to the metal base in accordance with the novel principles of the invention.
- a pen and ink drawing is utilized to make a line negative, and the desired photographic image is used to make a screened, or halftone, negative.
- These two negatives would be the normal negatives used by a photoengraver for making a commercial engraving or printing plate. In accordance with the present invention, however, these two negatives are combined and a screened, or halftone, positive is made.
- a copper plate is selected for the metallic base member, and this plate is chemically scrubbed to clean all impurities. After cleaning, the plate is coated with a lightsensitive solution such as a conventional photoengravers enamel and then dried. The positive is placed upon the sensitized metallic base and exposed on the base with a high-powered light. The resulting negative image on the metallic base is developed, and the print is burned in from the bottom of the plate to harden it on the metal.
- a lightsensitive solution such as a conventional photoengravers enamel
- the metallic base with the printed negative image thereupon is placed in a copper-etching machine where an iron chloride solution etches or eats away the unwanted metal to produce a roughened surface corresponding to the desired image.
- the etched metallic base which contains a plurality of charms is then removed from the solution and each charm is cut-out. After all burrs and imperfections are removed by filing and polishing, the charms are then cleaned thoroughly and placed in a gold electroplating solution. A layer of gold is deposited over the copper base, and the charms are taken from the electroplating solution and after rinsing, they are polished and buffed until the degree of smoothness and brightness desired on the finished product has been attained.
- the etched-out portions are darkened by means of a black coloring, and after the coloring has dried, the charm is complete.
- the metallic base was copper and the electroplated coating was gold.
- Other metals may be employed equally as well for both the base and coating; e.g., brass or silver may be utilized as the base and silver may be utilized in the plating process.
- a method of manufacturing an etched metallic charm from a photographic image comprising the steps of:
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- ing And Chemical Polishing (AREA)
Description
United States Patent 3,537,958 METHOD OF MANUFACTURING ETCHED METALLIC CHARM Joseph B. Wrenn, 600 Fielding Ave., Gretna, La. 70053, and George J. Englade, 7030 Michael Place, Harahan, La. 70123 No Drawing. Filed Oct. 20, 1967, Ser. No. 676,717 Int. Cl. B44c 1/04; C23b 1/00; C23f 17/00 U.S. Cl. 204-18 3 Claims ABSTRACT OF THE DISCLOSURE A method of making a charm from a photograph by making a screened negative from the photograph, making a screened positive from the negative, exposing the positive on a photo-sensitized metallic plate to produce a negative image, etching the negative image on the printed plate, electroplating the etched plate, and darkening the etched portion of the plate.
BACKGROUND OF THE INVENTION This invention relates to a method of manufacturing etched metallic articles, and more particularly to the manufacture of metallic charms from photographic images.
Miniature charm designs have always been a popular item of jewelry for personal wear. Such charms may be formed as three-dimensional replicas of animals, musical instruments and other articles of interest, or they may be in the form of fiat discs having appropriate inscriptions or figures in relief thereon. The method of the present invention is directed to the manufacture of this latter class of charms.
The charms manufactured in accordance with the principles of the present invention differ from charms conventionally available in that a photographic image is reproduced with life-like clarity on a selected background design. It has been known in the past to utilize line negatives to reproduce images on charms and medallions, but this method does not allow for any gradation in intensity among the tones reproduced. The present invention permits a complete range in gradation of tones to be reproduced on the metallic backing selected and thereby brings out in the charm all of the subtleties of shading present in the original photographic image.
SUMMARY A screened, or halftone, positive is utilized in the steps of manufacturing an etched metallic charm from a photographic image to produce a surface image on the metallic base having tones from the very lightest to solid black. In this manner a charm can be made with a faithful reproduction of any desired photographic image.
DESCRIPTION OF THE PREFERRED EMBODIMENT The charms of the present invention constitute substantially flat, disc-like structures similar to conventional charms presently used on bracelets and necklaces. The charms comprise a metal base having an etched border design with a central image transferred to the metal base in accordance with the novel principles of the invention.
A pen and ink drawing is utilized to make a line negative, and the desired photographic image is used to make a screened, or halftone, negative. These two negatives Would be the normal negatives used by a photoengraver for making a commercial engraving or printing plate. In accordance with the present invention, however, these two negatives are combined and a screened, or halftone, positive is made.
A copper plate is selected for the metallic base member, and this plate is chemically scrubbed to clean all impurities. After cleaning, the plate is coated with a lightsensitive solution such as a conventional photoengravers enamel and then dried. The positive is placed upon the sensitized metallic base and exposed on the base with a high-powered light. The resulting negative image on the metallic base is developed, and the print is burned in from the bottom of the plate to harden it on the metal.
The metallic base with the printed negative image thereupon is placed in a copper-etching machine where an iron chloride solution etches or eats away the unwanted metal to produce a roughened surface corresponding to the desired image. The etched metallic base, which contains a plurality of charms is then removed from the solution and each charm is cut-out. After all burrs and imperfections are removed by filing and polishing, the charms are then cleaned thoroughly and placed in a gold electroplating solution. A layer of gold is deposited over the copper base, and the charms are taken from the electroplating solution and after rinsing, they are polished and buffed until the degree of smoothness and brightness desired on the finished product has been attained. The etched-out portions are darkened by means of a black coloring, and after the coloring has dried, the charm is complete.
In the particular process described the metallic base was copper and the electroplated coating was gold. Other metals may be employed equally as well for both the base and coating; e.g., brass or silver may be utilized as the base and silver may be utilized in the plating process.
While the invention has been shown and described with particular reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made without departing from the spirit and scope of the invention.
What is claimed is:
1. A method of manufacturing an etched metallic charm from a photographic image comprising the steps of:
(a) developing a screened negative from said photographic image,
(b) developing a screened positive from said screened negative,
(0) coating a metallic plate with a light sensitive solu tion,
(d) exposing said positive on said coated metallic plate,
(e) developing the exposed negative image on said metallic plate,
(f) etching the negative image on said metallic plate,
(g) electroplating said metallic plate with a desired metallic coating, and
(h) treating the etched portions of said metallic plate to produce a contrasting appearance.
2. The combination according to claim 1 including the additional steps of:
(a) developing a line negative from a desired background pattern, and
(b) combining said line negative with said screened negative prior to developing said screened positive, whereby said screened positive is a composite of said line negative and said screened negative.
3 a 3. The combination according to claim 2 wherein a plurality of charms are produced in the same series of steps including the additional step of cutting out each individual charm after etching and prior to electroplating.
References Cited UNITED STATES PATENTS 4 2,443,110 6/1948 Rubin 20418 2,600,343 6/1952 Tuttle 20418 3,382,159 5/1968 Reed 204-32 JOHN H. MACK, Primary Examiner T. TUFARIELLO, Assistant Examiner U.S. c1. X.R
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US67671767A | 1967-10-20 | 1967-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3537958A true US3537958A (en) | 1970-11-03 |
Family
ID=24715689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US676717A Expired - Lifetime US3537958A (en) | 1967-10-20 | 1967-10-20 | Method of manufacturing etched metallic charm |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3537958A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4254544A (en) * | 1978-06-21 | 1981-03-10 | Barker Michael D | Method of casting photographic representation having tonal and height contrasts and the article so cast |
| US4445998A (en) * | 1981-12-02 | 1984-05-01 | Toyo Kohan Co., Ltd. | Method for producing a steel lithographic plate |
| US5683763A (en) * | 1994-02-07 | 1997-11-04 | Shillan; Michael David | Decorative pin and method for reproducing a photographic image directly onto a metal surface |
| US20040007558A1 (en) * | 2000-08-14 | 2004-01-15 | Sim Woo Youl | Manufacturing method for high-density type copper plate memorial |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US774772A (en) * | 1902-08-15 | 1904-11-15 | Arthur M Montgomery | Method of making sign-plates. |
| US2083249A (en) * | 1935-12-20 | 1937-06-08 | Joseph B Thomson | Photographic method and product resulting therefrom |
| US2443110A (en) * | 1945-11-20 | 1948-06-08 | John W Macclatchie | Pump piston |
| US2600343A (en) * | 1948-10-07 | 1952-06-10 | Kenyon Instr Company Inc | Method of making conductive patterns |
| US3382159A (en) * | 1964-11-09 | 1968-05-07 | Lustre Finish Inc | Method of providing decorative metal finishes |
-
1967
- 1967-10-20 US US676717A patent/US3537958A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US774772A (en) * | 1902-08-15 | 1904-11-15 | Arthur M Montgomery | Method of making sign-plates. |
| US2083249A (en) * | 1935-12-20 | 1937-06-08 | Joseph B Thomson | Photographic method and product resulting therefrom |
| US2443110A (en) * | 1945-11-20 | 1948-06-08 | John W Macclatchie | Pump piston |
| US2600343A (en) * | 1948-10-07 | 1952-06-10 | Kenyon Instr Company Inc | Method of making conductive patterns |
| US3382159A (en) * | 1964-11-09 | 1968-05-07 | Lustre Finish Inc | Method of providing decorative metal finishes |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4254544A (en) * | 1978-06-21 | 1981-03-10 | Barker Michael D | Method of casting photographic representation having tonal and height contrasts and the article so cast |
| US4445998A (en) * | 1981-12-02 | 1984-05-01 | Toyo Kohan Co., Ltd. | Method for producing a steel lithographic plate |
| US5683763A (en) * | 1994-02-07 | 1997-11-04 | Shillan; Michael David | Decorative pin and method for reproducing a photographic image directly onto a metal surface |
| US5888326A (en) * | 1994-02-07 | 1999-03-30 | Shillan; Michael David | Method for reproducing a photographic image directly onto a metal surface |
| US20040007558A1 (en) * | 2000-08-14 | 2004-01-15 | Sim Woo Youl | Manufacturing method for high-density type copper plate memorial |
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