US459835A - Thomas a - Google Patents
Thomas a Download PDFInfo
- Publication number
- US459835A US459835A US459835DA US459835A US 459835 A US459835 A US 459835A US 459835D A US459835D A US 459835DA US 459835 A US459835 A US 459835A
- Authority
- US
- United States
- Prior art keywords
- globe
- nitrogen
- oxygen
- pressure
- air
- 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
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 56
- 229910052757 nitrogen Inorganic materials 0.000 description 28
- 229910052760 oxygen Inorganic materials 0.000 description 24
- 239000001301 oxygen Substances 0.000 description 24
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 24
- 239000000126 substance Substances 0.000 description 12
- DLYUQMMRRRQYAE-UHFFFAOYSA-N Phosphorus pentoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 8
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 8
- 239000011591 potassium Substances 0.000 description 8
- 229910052700 potassium Inorganic materials 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- OXBLHERUFWYNTN-UHFFFAOYSA-M Copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 229940045803 cuprous chloride Drugs 0.000 description 4
- 239000012299 nitrogen atmosphere Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002274 desiccant Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 150000003112 potassium compounds Chemical class 0.000 description 2
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
- H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
- H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
- H01J7/183—Composition or manufacture of getters
Definitions
- A represents the inclosing globe, and a the flexible carbon filament, of an incandescing electric lamp.
- An exhaust-tube b is provided, connected by an air-tight joint with a tube 15, the lower portion 13 of Which contains pyrogallate of potassium, cuprous chloride, phosphorus, or equivalent substance capable of chemically combining with oxygen.
- the tube B is provided with a stopcock 0.
- the tube O is provided with means for connecting it with an air-pump, and the tube D terminates in a bulb E, containing phosphoric anhydride or a similar drying agent.
- the stop-cocks c and a being closed and the cock at open, such a portion of the air is removed from the globe that the removal of the oxygen from the remainder will leave the nitrogen at a pressure sufficient to prevent electrical carrying.
- I then close cl and open a, when the oxygen remaining in the globe will combine with the pyrogallate of potassium or other substance used, the Whole of the oxygen being thus gradually removed from the globe.
- the cock 0 is then closed and cock 6 opened, when the moisture of the nitrogen is absorbed by the phosphoric anhydride in the bulb E.
- the cock 6 must never be opened While cock 0 is also open, for in this case the pyrogallate of potassium or other substance would become dry and would then fail to combine with the oxygen.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Drying Of Gases (AREA)
Description
(No'ModeL) T. A. EDISON. MANUFACTURE OF INGANDESOENT ELECTRIC LAMPS. No. 459,835. Patented Sept. 22. 1891.
ATTEST: I A INVENTUB:
m: Noams Fur-ms ca, mum-mun msummuu, c. c.
UNITED STATES PATENT OFFICE.
THOMAS A. EDISON, OF MENLO PARK, NENV JERSEY, ASSIGNOR TO THE EDISON ELECTRIC LIGHT COMPANY, OF NEW YORK, N. Y.
MANUFACTURE OF INCANDESCENT ELECTRIC LAMPS.
SPECIFICATION forming part of Letters Patent No. 459,835, dated September 22, 1891.
Application filed January 22, 1883. Serial No. 82,560. (No model.)
To aZZ whom it may concern.-
Be it known that I, THOMAS A. EDIsoN, of Menlo Park, in the county of Middlesex and State of New Jersey, have invented a new and useful Improvement in the Manufacture of Incandescing Electric Lamps, (Case No. 52%,) of which the following is a specification.
In my application No. 525 (Serial No. 78,774) I have set forth a method by which the inclosing globe of an incandescing electric lamp can be charged With nitrogen at such a pressure as to, prevent electrical carrying from the carbon filament to the globe. Such method consists in the removal of the constituents other than nitrogen of the air or other gas contained in the globe by the physical absorption or deposition of such constituents. I have since found that very satisfactory results may be obtained by the chemical removal of the oxygen from the air contained in the globe by the use of pyrogallate of potassium, cuprous chloride, phosphorus, or equivalent chemical agent, which combines with oxygen, the atmospheric pressure within the globe being first reduced to such a pointthat the removal of the oxygen will leave the nitrogen at the proper pressure to prevent the electrical carrying.
The desired degree of pressure is set forth in my application No. 516, Serial No. 77,526. I employ, also, a suitable drying agent-such as phosphoric anl1ydride--to free the nitrogen from moisture. V
In carrying out my invention I may make use of an apparatus such as is illustrated in the accompanying dyawing.
A represents the inclosing globe, and a the flexible carbon filament, of an incandescing electric lamp. An exhaust-tube b is provided, connected by an air-tight joint with a tube 15, the lower portion 13 of Which contains pyrogallate of potassium, cuprous chloride, phosphorus, or equivalent substance capable of chemically combining with oxygen. The tube B is provided with a stopcock 0. A tube 0, provided with a stop-cock (Z, and a tube D, having a stop-cock 6, extend from the tube B. The tube O is provided with means for connecting it with an air-pump, and the tube D terminates in a bulb E, containing phosphoric anhydride or a similar drying agent. The stop-cocks c and a being closed and the cock at open, such a portion of the air is removed from the globe that the removal of the oxygen from the remainder will leave the nitrogen at a pressure sufficient to prevent electrical carrying. I then close cl and open a, when the oxygen remaining in the globe will combine with the pyrogallate of potassium or other substance used, the Whole of the oxygen being thus gradually removed from the globe. The cock 0 is then closed and cock 6 opened, when the moisture of the nitrogen is absorbed by the phosphoric anhydride in the bulb E. The cock 6 must never be opened While cock 0 is also open, for in this case the pyrogallate of potassium or other substance would become dry and would then fail to combine with the oxygen. If phosphorus is used instead of the potassium compound, it must be heated. The removal of the oxygen in the globe reduces the pressure about one-fifth, leaving the proper pressure in the globe to prevent electrical carrying. After the nitrogen is reduced to the proper state the globe is sealed off ath- IVhat I claim is 1. The method of obtaining a dry nitrogen atmosphere at a definite pressure in the inclosing globe of an incandescing electric lamp, consisting in producing an air-pressure in the globe slightly above the pressure of nitrogen desired, decomposing the air left in the globe, retaining the nitrogen in the globe, removing the oxygen by putting a receptacle containing a substance having affinity for oxygen into communication with the globe, and removing the moisture from the nitrogen, substantially as described.
2. The method of ob aining-a dry nitrogen atmosphere at a definite pressure in the inclosing globe of an incandescing electric lamp, consisting in producing an air-pressure in the globe slightly above the pressure of nitrogen desired, decomposing the air left in the globe, retaining the nitrogen in the globe, removing the oxygen, but not the nitrogen, and removing the moisture from the nitrogen, substantially as described.
This specification signed and witnessed this 13th day of January, 1883.
THOS. A. EDISON.
Witnesses:
H. W. SEELY, EDWARD H. PYATT.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US459835A true US459835A (en) | 1891-09-22 |
Family
ID=2528710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US459835D Expired - Lifetime US459835A (en) | Thomas a |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US459835A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004003005B4 (en) | 2003-01-21 | 2005-08-11 | Colibri Corp. | Device with a combination of a lighter and two cigar cutting devices |
-
0
- US US459835D patent/US459835A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004003005B4 (en) | 2003-01-21 | 2005-08-11 | Colibri Corp. | Device with a combination of a lighter and two cigar cutting devices |
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