US460596A - Electrode for arc lamps - Google Patents
Electrode for arc lamps Download PDFInfo
- Publication number
- US460596A US460596A US460596DA US460596A US 460596 A US460596 A US 460596A US 460596D A US460596D A US 460596DA US 460596 A US460596 A US 460596A
- Authority
- US
- United States
- Prior art keywords
- electrode
- carbon
- arc lamps
- pencil
- lamps
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 7
- 239000011651 chromium Substances 0.000 description 6
- 229910052804 chromium Inorganic materials 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 101100272279 Beauveria bassiana Beas gene Proteins 0.000 description 1
- 240000003936 Plumbago auriculata Species 0.000 description 1
- 150000001845 chromium compounds Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 235000011118 potassium hydroxide Nutrition 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/28—Non-electron-emitting electrodes; Screens
Definitions
- a pencil for are lamps, composed, essentially, of carbon and a substance containing chromium, in combination with a metallic conductor or holder with which it is associated, as set forth.
- Apencil forarclamps composed of a mixture of carbon, a substance containing chromium, and causticpotash, in combination with a holder of wire-gauze.
Landscapes
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Radiation-Therapy Devices (AREA)
Description
(No Model.)
I. L. ROBERTS. ELECTRODE FOR ARC LAMPS.
No. 460,596. Patented Oct. 6, 1891.
Carbon and C/Pramiz/m WITNESSES INVENTOR W M$W mama, BY
IOZLLLLM yS AT T ORNE Y9 UNITED STATES PATENT OFFICE.
ISAIAH L. ROBERTS, OF BROOKLYN, NEIV YORK.
ELECTRODE FOR ARC LAMPS.
SPECIFICATION forming part of Letters Patent No. 460,596, dated October 6, 1891.
Application filed March 6, 1891.
To all whom it may concern:
Be it known that I, ISAIAH L. ROBERTS, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Arc-Lam p Pencils, of which the following is a specification, reference being had to the drawing accompanying and forming part of the same.
The subject of my present lnvention is a pencil or electrode for are lamps which is an improvement on the carbon and other pencils in general use in the particulars hereinafter pointed out.
This invention is an improvement on the form of arc-light pencil shown and described in my application filed March 10, 1890, Serial No. 343,315, and which consists, broadly, of a pencil composed of a metallic holder, with which is associated a refractory substance containing chromium or some of its compounds.
According to my presentinvention I employ as the refractory substance a compound of conducting-carbon and a substance containing chromium, finding that by so doing lobtain a superior light and a more durable carbon, which, particularly after the extinguishment of the arc, offers a lower resistance and relights more readily. I also employ as the metallic holder a cylinder rod ortube of wiregauze, the use of which contributes very greatly to reducing the cost of manufacture.
In carrying out my invention I use, generally, a wire net or gauze of about twelve meshes to the inch. Strips of this are rolled up into rods or tubes of the desired diameter, which are pressed down into a mixture of about ten per cent. of plumbago or some conducting Serial No. 383,941. (No model.)
carbon, gasretort carbon, and ninety per cent. of pulverized chrome iron ore or other compound of or containing chromium. The chrome-iron ore should beas free from earthy matters as possible, and it is made into a mud by a solution of caustic soda of about 10 Baum. If a perforated tube or cylinder, such as is made of wire-gauze, be forced down into such a mixture and rapped repeatedly, the mud rapidly works in through the perforations or meshes and completely fills it. This material dries rapidly and becomes hard and solid, and when so dried a coating of the same compound is applied over the tube.
In theaccompanying drawing a pencil constructed in the manner above described is shown partly in section.
B is the Wire-gauze, and O the chromium compound and carbon.
Having now described my invention, what I claim is 1. A pencil for are lamps, composed, essentially, of carbon and a substance containing chromium, in combination with a metallic conductor or holder with which it is associated, as set forth.
2. A pencil forarc lamps, composed of a re fractory compound containing chromium, in combination with a tube or cylinder of perforated metal, such as wire-gauze.
3. Apencil forarclamps, composed ofa mixture of carbon, a substance containing chromium, and causticpotash, in combination with a holder of wire-gauze.
ISAIAH L. ROBERTS. Witnesses.
RoBT. F. GAYLORD, PARKER W. PAGE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US460596A true US460596A (en) | 1891-10-06 |
Family
ID=2529471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US460596D Expired - Lifetime US460596A (en) | Electrode for arc lamps |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US460596A (en) |
-
0
- US US460596D patent/US460596A/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE720713C (en) | Process for the production of fluorescent screens for electrical discharge vessels | |
| Cobine | Effects of oxides and impurities on metallic arc reignition | |
| US460597A (en) | Electrode for arc lamps | |
| DE689243C (en) | Extinguishing pipe for gas switch with arc extinguishing by gases and vapors | |
| US901993A (en) | Carbon pencil of electric-arc lights. | |
| AT132552B (en) | Gas-filled electric light bulb. | |
| AT123127B (en) | Process for the production of hot cathodes. | |
| DE873872C (en) | Cathode for electrical discharge vessels | |
| US196425A (en) | Improvement in metal-plated carbons for electrical illuminating-points | |
| DE444004C (en) | Method of providing carbon and graphite electrodes for electric ovens with a metal mesh used to hold protective mass | |
| DE610407C (en) | Insulating body or layer for indirectly heated cathodes of electrical discharge vessels | |
| DE447580C (en) | Wehnelt cathode | |
| DE420581C (en) | Process for the production of materials which are able to emit electrons to a large extent when heated | |
| DE603740C (en) | Process for the production of glow cathodes | |
| US956519A (en) | Electrode for arc-lamps. | |
| US1025407A (en) | Arc-light electrode. | |
| DE858108C (en) | Process for making electric gas discharge lamps more easily ignitable | |
| US1041262A (en) | Plastic mass for metallic filaments. | |
| DE666867C (en) | Use of a tantalum carbide alloy for resistance bodies | |
| US1190162A (en) | Method of producing a flaming or luminous arc. | |
| AT133280B (en) | Cathode emitting at low temperature. | |
| AT134843B (en) | Method of welding by generating electrical and chemical heat. | |
| US527826A (en) | Carbon for electric lights | |
| AT119601B (en) | Manufacturing process for hot cathodes. | |
| DE931423C (en) | High intensity arc light electrode |