US1883650A - Contact material - Google Patents
Contact material Download PDFInfo
- Publication number
- US1883650A US1883650A US546164A US54616431A US1883650A US 1883650 A US1883650 A US 1883650A US 546164 A US546164 A US 546164A US 54616431 A US54616431 A US 54616431A US 1883650 A US1883650 A US 1883650A
- Authority
- US
- United States
- Prior art keywords
- silver
- contact material
- nickel
- copper
- substitute
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/06—Alloys based on silver
- C22C5/08—Alloys based on silver with copper as the next major constituent
Definitions
- My invention relates to contact material, and more particularly to a material to be used as a substitute for silver in the electrical field.
- Silver as a contact material has the very great advantage of being the best known con-' ductor of electricity. Its use for this purpose, however, is limited due to its relatively high cost.
- An object of my invention is to provide a material less expensive than silver to be used as a substitute for silver in its many and varied uses in the electrical field.
- a further object of my invention is to pro vide a material to be used as an electrical contactor which will be highly resistive to corrosion, hard and durable, and at the same time be an excellent conductor of electricity.
- a further object of my invention is to provide an alloy to be used as a substitute for silver in the manufacture of contacts for delicate electrical instruments.
- Such an alloy besides being considerably cheaper than silvfi, is an excellent conductor of electricity, is hard and durable, and is markedly resistive to corrosion.
- the function of the copper is to secure a bond between silver and nickel as these two elements have a tendency to separate upon cooling.
- Nickel being considerably harder than either silver or copper, lends a certain degree of hardness to the alloy which is very desirable in a contact material.
- An electrical substitute for silver composed of silver, nickel and copper in approximate ly the proportions: Silver 65%, copper nickel 5%.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Resistance Heating (AREA)
- Conductive Materials (AREA)
Description
Patented Oct. 18, 1932 UNITED STATES PATENT OFFICE EDGAR W. ENGLE, OF LAKE FOREST, ILLINOIS, ASSIGNOR TO FANSTEEL PRODUCTS COM- PANY, INC., OF NORTH CHICAGO, ILLINOIS, A CORPORATION OF NEW YORK CONTACT MATERIAL No Drawing.
My invention relates to contact material, and more particularly to a material to be used as a substitute for silver in the electrical field.
Silver as a contact material has the very great advantage of being the best known con-' ductor of electricity. Its use for this purpose, however, is limited due to its relatively high cost.
An object of my invention is to provide a material less expensive than silver to be used as a substitute for silver in its many and varied uses in the electrical field.
A further object of my invention is to pro vide a material to be used as an electrical contactor which will be highly resistive to corrosion, hard and durable, and at the same time be an excellent conductor of electricity.
A further object of my invention is to provide an alloy to be used as a substitute for silver in the manufacture of contacts for delicate electrical instruments.
Other objects and advantages of my invention will appear as this description progresses.
I have discovered that alloying a relatively large proportion of silver with a small proportion of nickel and bonding the two together with copper forms an excellent substitute for silver in its varied uses in the electrical field.
Such an alloy, besides being considerably cheaper than silvfi, is an excellent conductor of electricity, is hard and durable, and is markedly resistive to corrosion. I
I have found that the best results are obtained when approximately the following proportions of silver, copper and nickel are used:
Per cent Silver 65 Copper 30 Nickel Application filed June 22, 1931. Serial No. 546,164.
The function of the copper is to secure a bond between silver and nickel as these two elements have a tendency to separate upon cooling. Nickel, being considerably harder than either silver or copper, lends a certain degree of hardness to the alloy which is very desirable in a contact material.
Having thus described my invention, I claim as new and desire to secure by Letters Patent:
An electrical substitute for silver composed of silver, nickel and copper in approximate ly the proportions: Silver 65%, copper nickel 5%.
In witness whereof, I hereunto subscribe my name this 18th day of June, 1931.
EDGAR W. ENGLE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US546164A US1883650A (en) | 1931-06-22 | 1931-06-22 | Contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US546164A US1883650A (en) | 1931-06-22 | 1931-06-22 | Contact material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1883650A true US1883650A (en) | 1932-10-18 |
Family
ID=24179149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US546164A Expired - Lifetime US1883650A (en) | 1931-06-22 | 1931-06-22 | Contact material |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1883650A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2694126A (en) * | 1952-02-28 | 1954-11-09 | Westinghouse Electric Corp | Electrical contact member |
| US2953844A (en) * | 1957-08-01 | 1960-09-27 | Stewart Warner Corp | Brazed stainless steel joint and method of brazing same |
| US6131796A (en) * | 1997-10-30 | 2000-10-17 | International Business Machines Corporation | Direct brazing of refractory metal features |
-
1931
- 1931-06-22 US US546164A patent/US1883650A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2694126A (en) * | 1952-02-28 | 1954-11-09 | Westinghouse Electric Corp | Electrical contact member |
| US2953844A (en) * | 1957-08-01 | 1960-09-27 | Stewart Warner Corp | Brazed stainless steel joint and method of brazing same |
| US6131796A (en) * | 1997-10-30 | 2000-10-17 | International Business Machines Corporation | Direct brazing of refractory metal features |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2300286A (en) | Electrical contact | |
| US1832307A (en) | Alloy for electrical contacts | |
| GB416683A (en) | Improvements in or relating to electric circuit breakers | |
| US1883650A (en) | Contact material | |
| US2151905A (en) | Electric contact combination | |
| US2070271A (en) | Electrical contact | |
| US1779602A (en) | Alloy for electrical contacts | |
| US2268939A (en) | Electric contact | |
| US1561247A (en) | Metallic composition | |
| US2268940A (en) | Electric contacting element | |
| US3655368A (en) | Vacuum switch contacts | |
| US2138599A (en) | Contact element | |
| US2154068A (en) | Electrical contact | |
| US1785618A (en) | Copper-carbon contact | |
| US2202150A (en) | Electric contacting element | |
| US1541609A (en) | Contact brush for electric motors and generators | |
| US1779603A (en) | Alloy for electrical contacts | |
| US2303405A (en) | Alloy | |
| US2145792A (en) | Contacting element | |
| US2136548A (en) | Copper-thorium alloys | |
| GB1270719A (en) | Improvements in vacuum type circuit interrupter | |
| US1229037A (en) | Metal alloy. | |
| US2177745A (en) | Copper alloys | |
| US2126633A (en) | Copper-silver alloys | |
| US2037446A (en) | Electrical make-and-break contact |