US1181742A - Electrical contact. - Google Patents
Electrical contact. Download PDFInfo
- Publication number
- US1181742A US1181742A US78279313A US1913782793A US1181742A US 1181742 A US1181742 A US 1181742A US 78279313 A US78279313 A US 78279313A US 1913782793 A US1913782793 A US 1913782793A US 1181742 A US1181742 A US 1181742A
- Authority
- US
- United States
- Prior art keywords
- contact
- disk
- copper
- tungsten
- metal
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
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- 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
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/9265—Special properties
- Y10S428/929—Electrical contact feature
-
- 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
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/9335—Product by special process
- Y10S428/939—Molten or fused coating
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49204—Contact or terminal manufacturing
- Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
- Y10T29/4921—Contact or terminal manufacturing by assembling plural parts with bonding
- Y10T29/49211—Contact or terminal manufacturing by assembling plural parts with bonding of fused material
- Y10T29/49213—Metal
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12486—Laterally noncoextensive components [e.g., embedded, etc.]
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
- Y10T428/12826—Group VIB metal-base component
- Y10T428/1284—W-base component
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12903—Cu-base component
- Y10T428/12917—Next to Fe-base component
Definitions
- the present invention relates to electrical contacts. suitable for electrical circuit making and breaking devices, and the like, for example, such as described in my prior latent No. 1,089,907.
- This application describes as one embodiment of my invention a contact comprising a disk of tungsten welded to a support of ferrous metal by an interposed film of copper.
- the weld is made by heating the three metals to be united to the melting point of copper in hydrogen.
- the contact disk and support are dis closed as having the same diameter, or, in other words. the edges of the contacting faces were flush.
- copper is apt to creep up the sides of the tungsten disk when the parts of the contact are assembled and in some cases even flow over on the contacting surface.
- this finishing operation may be omitted by constituting the support of lesser diameter than the body of tungsten, or other refractory metal which constitutes the contact.
- Figure 1 shows the parts of the contact before attaching
- Fig. 2 illustrates the completed contact.
- the shank 3 of this supportv serves to fasten the contact, by riveting, for example, to the spring or whatever form of holder is provided.
- the tack 2 is of lesser diameter than the contact disk 1 so that an annular space 4 is provided on the underside of the disk 1 between the contiguous surface of contact 2 and the outer edge of the disk.
- the contact as a whole is built up by placing upon the support 2 a thin plate 5 of copper and placing upon this plate the disk 1 of tungsten.
- ⁇ Vhile copper is preferred, other cupreous metal, or even silver or gold may be used in a like manner.
- the three parts are properly held in position by placing them on a suitable support, which may consist of graphite, alumina or other refractory material. and then heating in a suitable furnace in a hydrogen atmosphere to the melting point of copper. Under these conditions, and in the absence of oxidizing gases, the'copper will wet the surface of both the ferrous metal support and of the body of tungsten, or other refractory metal, so as to form a continuous metallic union, firmly uniting the two metallic bodies as indicated in Fig. 2.
Description
W. D. COOLIDGE.
ELECTRICAL CONTACT.
APPLICAHON HLED AUG-4. 1913.
Patented May 2, 1916.
III!
Witnesses: Inventor Wiiliarn D.C0olidge,
% b His fittorneg.
UNITED STATES PATENT OFFICE.
WILLIAM D. COOLIDGE, OF SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.
ELECTRICAL CONTACT.
Application filed August 4, 1913.
To all whom it may concern Be it known that I, VVLLLIAM D. COOLIDGE, a citizen of the United States, residing at Schenectady, county of Schenectady, State of New York, have invented certain new and useful Improvements in Electrical Contacts, of which the following is a specifica tion.
The present invention relates to electrical contacts. suitable for electrical circuit making and breaking devices, and the like, for example, such as described in my prior latent No. 1,089,907.
This application describes as one embodiment of my invention a contact comprising a disk of tungsten welded to a support of ferrous metal by an interposed film of copper. The weld is made by heating the three metals to be united to the melting point of copper in hydrogen. In my prior application the contact disk and support are dis closed as having the same diameter, or, in other words. the edges of the contacting faces were flush. Under these conditions copper is apt to creep up the sides of the tungsten disk when the parts of the contact are assembled and in some cases even flow over on the contacting surface. This necessitates a separate finishing operation, such as grinding or acid treatment to remove the copper, as it has deleterious effect upon the make and break action of the contact. In accordance with my present invention, this finishing operation may be omitted by constituting the support of lesser diameter than the body of tungsten, or other refractory metal which constitutes the contact.
In the accompanying drawings, Figure 1 shows the parts of the contact before attaching, and Fig. 2 illustrates the completed contact.
As shown in Fig. 1 a small disk 1 of tungsten, or other refractory metal, consti-' tutes the contact proper and this disk is attached to a small malleable contact or support 2, consisting preferably of ferrous metal such as steel or iron. The shank 3 of this supportv serves to fasten the contact, by riveting, for example, to the spring or whatever form of holder is provided. As clearly Specification of Letters Patent.
Patented May 2, 1916.
Serial No. 782,793.
shown in Figs. 1 and 2 the tack 2 is of lesser diameter than the contact disk 1 so that an annular space 4 is provided on the underside of the disk 1 between the contiguous surface of contact 2 and the outer edge of the disk.
The contact as a whole is built up by placing upon the support 2 a thin plate 5 of copper and placing upon this plate the disk 1 of tungsten. \Vhile copper is preferred, other cupreous metal, or even silver or gold may be used in a like manner. The three parts are properly held in position by placing them on a suitable support, which may consist of graphite, alumina or other refractory material. and then heating in a suitable furnace in a hydrogen atmosphere to the melting point of copper. Under these conditions, and in the absence of oxidizing gases, the'copper will wet the surface of both the ferrous metal support and of the body of tungsten, or other refractory metal, so as to form a continuous metallic union, firmly uniting the two metallic bodies as indicated in Fig. 2.
\Vhen the annular space is provided between the metal 5 and the edge of the contact disk I find that the copper or other metal will not creep over theedge of the contact disk so that the contacts may be used immediately without any finishing operation. thus cheapening their manufacture.
hat I claim as new and desire to secure by Letters Patent of the United States, 1s:
The combination of a tungsten contact, a ferrous metal base therefor and a uniting film of c lpreous metal set from a fluid state, all of said parts being substantially intact, the base having a smaller diameter than the contact whereby the cupreous metal is prevented from creeping up the sides of the tungsten when fluid.
In witness whereof. I have hereunto set my hand this first day of Au ust, 1913.
. WILLIAM D. C OLTDGE.
Witnesses:
BENJAMIN B. HULL, HELEN ORFORD.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US78279313A US1181742A (en) | 1913-08-04 | 1913-08-04 | Electrical contact. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US78279313A US1181742A (en) | 1913-08-04 | 1913-08-04 | Electrical contact. |
Publications (1)
Publication Number | Publication Date |
---|---|
US1181742A true US1181742A (en) | 1916-05-02 |
Family
ID=3249716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US78279313A Expired - Lifetime US1181742A (en) | 1913-08-04 | 1913-08-04 | Electrical contact. |
Country Status (1)
Country | Link |
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US (1) | US1181742A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2439570A (en) * | 1942-11-10 | 1948-04-13 | Mallory & Co Inc P R | Electric contact |
US2465230A (en) * | 1943-01-08 | 1949-03-22 | Bryant Electric Co | Electric circuit interrupter |
US2468888A (en) * | 1944-09-25 | 1949-05-03 | Cutler Hammer Inc | Metal-backed nonwelding contact |
US2568242A (en) * | 1948-11-08 | 1951-09-18 | Metals & Controls Corp | Electrical contact |
US2661029A (en) * | 1948-10-20 | 1953-12-01 | Bell Telephone Labor Inc | Method of making a fine wire mesh |
US2759074A (en) * | 1952-10-16 | 1956-08-14 | Square D Co | Electric contact mounting |
US4222167A (en) * | 1977-04-28 | 1980-09-16 | Siemens Aktiengesellschaft | Method of manufacturing a contact bridge |
USD863222S1 (en) * | 2019-07-30 | 2019-10-15 | Twisted Ideas, Inc. | Conductive pin |
US10756453B2 (en) | 2018-08-20 | 2020-08-25 | Twisted Ideas, Inc. | Quick connection system |
-
1913
- 1913-08-04 US US78279313A patent/US1181742A/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2439570A (en) * | 1942-11-10 | 1948-04-13 | Mallory & Co Inc P R | Electric contact |
US2465230A (en) * | 1943-01-08 | 1949-03-22 | Bryant Electric Co | Electric circuit interrupter |
US2468888A (en) * | 1944-09-25 | 1949-05-03 | Cutler Hammer Inc | Metal-backed nonwelding contact |
US2661029A (en) * | 1948-10-20 | 1953-12-01 | Bell Telephone Labor Inc | Method of making a fine wire mesh |
US2568242A (en) * | 1948-11-08 | 1951-09-18 | Metals & Controls Corp | Electrical contact |
US2759074A (en) * | 1952-10-16 | 1956-08-14 | Square D Co | Electric contact mounting |
US4222167A (en) * | 1977-04-28 | 1980-09-16 | Siemens Aktiengesellschaft | Method of manufacturing a contact bridge |
US10756453B2 (en) | 2018-08-20 | 2020-08-25 | Twisted Ideas, Inc. | Quick connection system |
US11264738B2 (en) * | 2018-08-20 | 2022-03-01 | Twisted Ideas, Inc. | Quick connection system |
USD863222S1 (en) * | 2019-07-30 | 2019-10-15 | Twisted Ideas, Inc. | Conductive pin |
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