US1889147A - Method and mold for the local strengthening of the silver coating of galvanically silvered spoons and forks - Google Patents
Method and mold for the local strengthening of the silver coating of galvanically silvered spoons and forks Download PDFInfo
- Publication number
- US1889147A US1889147A US543685A US54368531A US1889147A US 1889147 A US1889147 A US 1889147A US 543685 A US543685 A US 543685A US 54368531 A US54368531 A US 54368531A US 1889147 A US1889147 A US 1889147A
- Authority
- US
- United States
- Prior art keywords
- mold
- silver coating
- spoons
- forks
- strengthening
- 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
- 238000005728 strengthening Methods 0.000 title description 13
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title description 9
- 239000011248 coating agent Substances 0.000 title description 9
- 238000000576 coating method Methods 0.000 title description 9
- 229910052709 silver Inorganic materials 0.000 title description 9
- 239000004332 silver Substances 0.000 title description 9
- 238000000034 method Methods 0.000 title description 7
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 241001272720 Medialuna californiensis Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/16—Electroplating with layers of varying thickness
Definitions
- My invention has for its object a method and a mold for the local strengthening of the silver coating of galvanically si vered spoons and forksat the places where they rest on the face and are subjected to be mostly worn off, viz. at the bowl and the handle as well as at the points of the bowl.
- the silvering of the whole object and the strengthening of the silver coating at the places subjected mostly to the wear is executed in two separate methods of work.
- the covering mold used for strengthening of the silver coating is constructed according to my invention in such a manner, that the edges of the openings in the mold are elevated gradually from the object being within the mold and that the shape of said openings corresponds to that of the places to be strengthened of the piece of work.
- FIG. 1 is a back view and Fig. 2 a longitudinal section.
- the mold consists of a back part a and a front part b. It encloses the piece 0 to be treated, a spoon, and is provided at the places of the bowl or of the handle and of the point of the bowl where it rests on the face with O9 openings d. At the places behind the openings of the piece to be treated takes place the strengthening of the silver coating.
- This strengthening is obtained according to my invention by a special method (gal whole piece of work.
- the edges of the openings (Z arranged in the mold are constructed in accordance with my invention (see Fig. 2 of the drawing) in such a manner, that they are elevated gradually from the piece of work 0.
- the strengthening of metal deposit towards the edges of the opening is gradually reduced and an imperceptible transition of the metal deposit into the face of the piece of work without any visible elevation is created.
- the shape of the openings cZ corresponds to those of the places to be strengthened of the piece of Work.
- the opening behind the bowl of the spoon to be treated is nearly half-moon shaped. Owing to this formation the metal deposit is limited to the face to be really necessary strengthened, also a consumption of metal as small as possible is obtained.
- the strengthening of the silver coating in a special method allows a proper distribution of the strengthening deposit and enables to strengthen the worn places of spoons and forks already used.
- V1 hat I claim is:
- a mold for locally strengthening the silver coating of an article such as a spoon or the like and comprising a mold having back and front portions to receive the article between them, one of said portions having an opening to expose the article at the point where the same is to be reinforced, the edge wall of said opening being so shaped as to recede gradually from the exposed local surface of the article to cause the edges of a strengthening deposit applied through said opening to be radually reduced and to merge imperceptibly into the face of the work article.
Description
NOV. 29, 1932. KRUGER 1,889,147 METHOD AND MOLD FOR THE LOCAL STRENGTHENING OF THE SILVER COATING 0F GALVANICALLY SILVERED SPOONS AND FORKS Filed June 11, 1931 Patented Nov. 29, 1932 rear oFFi'cE Z-IERMANN KR llG-ER, OF KARLSRUI-IE, GERMANY METHOD AND MOLD FOR THE LOCAL STRENGTHENING OF THE SILVER COATING OF GALVANICALLY SILVERED SPOON S AND FORKS Application filed June 11, 1931, Serial No. 543,685, and in Germany September 14, 1928.
My invention has for its object a method and a mold for the local strengthening of the silver coating of galvanically si vered spoons and forksat the places where they rest on the face and are subjected to be mostly worn off, viz. at the bowl and the handle as well as at the points of the bowl.
According to my invention the silvering of the whole object and the strengthening of the silver coating at the places subjected mostly to the wear is executed in two separate methods of work. The covering mold used for strengthening of the silver coating is constructed according to my invention in such a manner, that the edges of the openings in the mold are elevated gradually from the object being within the mold and that the shape of said openings corresponds to that of the places to be strengthened of the piece of work.
The accompanying drawing shows my invention by way of example, in which Fig. 1 is a back view and Fig. 2 a longitudinal section.
The mold consists of a back part a and a front part b. It encloses the piece 0 to be treated, a spoon, and is provided at the places of the bowl or of the handle and of the point of the bowl where it rests on the face with O9 openings d. At the places behind the openings of the piece to be treated takes place the strengthening of the silver coating.
This strengthening is obtained according to my invention by a special method (gal whole piece of work. The edges of the openings (Z arranged in the mold are constructed in accordance with my invention (see Fig. 2 of the drawing) in such a manner, that they are elevated gradually from the piece of work 0. Thereby the strengthening of metal deposit towards the edges of the opening is gradually reduced and an imperceptible transition of the metal deposit into the face of the piece of work without any visible elevation is created. According to my invention and as shown in Fig. 1 the shape of the openings cZ corresponds to those of the places to be strengthened of the piece of Work.
vanization) before or after silvering the- The opening behind the bowl of the spoon to be treated is nearly half-moon shaped. Owing to this formation the metal deposit is limited to the face to be really necessary strengthened, also a consumption of metal as small as possible is obtained. The strengthening of the silver coating in a special method allows a proper distribution of the strengthening deposit and enables to strengthen the worn places of spoons and forks already used.
V1 hat I claim is:
A mold for locally strengthening the silver coating of an article such as a spoon or the like and comprising a mold having back and front portions to receive the article between them, one of said portions having an opening to expose the article at the point where the same is to be reinforced, the edge wall of said opening being so shaped as to recede gradually from the exposed local surface of the article to cause the edges of a strengthening deposit applied through said opening to be radually reduced and to merge imperceptibly into the face of the work article.
In testimony whereof I aihx my signature.
HERMANN KRUGER.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK111190D DE576099C (en) | 1928-09-15 | 1928-09-15 | Process for the local reinforcement of galvanic metal deposits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1889147A true US1889147A (en) | 1932-11-29 |
Family
ID=25984648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US543685A Expired - Lifetime US1889147A (en) | 1928-09-15 | 1931-06-11 | Method and mold for the local strengthening of the silver coating of galvanically silvered spoons and forks |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1889147A (en) |
| DE (2) | DE576099C (en) |
| FR (1) | FR716462A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE959777C (en) * | 1955-05-15 | 1957-03-14 | Auto Union G M B H | Method and device for partially electroplating fuel containers |
-
1928
- 1928-09-15 DE DEK111190D patent/DE576099C/en not_active Expired
-
1929
- 1929-02-19 DE DEK117406D patent/DE582633C/en not_active Expired
-
1931
- 1931-05-02 FR FR716462D patent/FR716462A/en not_active Expired
- 1931-06-11 US US543685A patent/US1889147A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE582633C (en) | 1933-08-18 |
| FR716462A (en) | 1931-12-21 |
| DE576099C (en) | 1933-05-06 |
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