US286916A - Desmond geeald fitz-geeald - Google Patents
Desmond geeald fitz-geeald Download PDFInfo
- Publication number
- US286916A US286916A US286916DA US286916A US 286916 A US286916 A US 286916A US 286916D A US286916D A US 286916DA US 286916 A US286916 A US 286916A
- Authority
- US
- United States
- Prior art keywords
- geeald
- filament
- desmond
- fitz
- wire
- 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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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 239000004020 conductor Substances 0.000 description 14
- 239000001301 oxygen Substances 0.000 description 14
- 229910052760 oxygen Inorganic materials 0.000 description 14
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 230000000153 supplemental Effects 0.000 description 12
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 10
- 229910052749 magnesium Inorganic materials 0.000 description 10
- 239000011777 magnesium Substances 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 102000036680 Zincins Human genes 0.000 description 2
- 108091006996 Zincins Proteins 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000001419 dependent Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000000576 supplementary Effects 0.000 description 2
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
- H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
Definitions
- My invention has for its object to produce a more complete vacuum in electric incandescence lamps by effecting the removal of residual oxygen, and, in some cases, residual nitrogen.
- a supplementary carbon filament, or a wire which may itself be made of oxidizablemetal-such as iron or zinc-or be covered with an oxidizable metalsuch as magnesium or other suitable substance placed within the bulb-a'nd capable of being temporarily thrown into circuit, so that by the passage 'of the current, after more or less complete exhaustion by the pump, the carbon filament or oxidizable wire will be heated, and thereby effect the absorption of the residual oxygen, and when magnesium is employed the residual nitrogen contained in the bulb.
- Figure l represents a plan and sectional side view of the neck of a lamp provided with an additional conductor.
- Fig. 2 is a section of a complete lamp, and
- Fig. 3 is a detail view of the extra or supplemental filament mounted upon its conductors.
- D and E are the usual wire conductors, carrying the light-giving filament A.
- Into the neck of the lamp I introduce another conducting-wire, M, and upon this wire and one of the other conducting-wires, D, is mounted the supplemental filament N.
- This extra filament N may be formed either of an oxidizable metalsuch as iron or zincin which case, when sufficiently heated, it effects directly the abstraction of oxygen, or it may be of unoxidizable metal-such as platinum in which case it may be utilized for raising the temperature of the atmosphere withinthe glass vessel during the process of exhaustion,
- Oxygen OthEl "gaseous bOdy may be com pletely effected.
- the length of the iron wire should not exceed one and onehalf inch and the magnesium ribbon may be three fourths of an inch long.
- a current is passed through the filament N of sufficient strength to produce a low red heat, and at the same time external heat may be applied to prevent any of the magnesia formed from cracking the glass should it fall away from the heated wire.
- the connections are shifted to the two main conductors D E, and the carbon filament A is raised to the required temperature, thus driving out any secluded gases, which will be carried away by the air-pump.
- the supplemental filament may be again heated and caused to absorb any trace of oxygen that may have been left, and also, as it would appear, some portion of the nitrogen.
Description
(No Model.)
D. G. FITZ GERALD.
INGANDESGENT ELECTRIC LAMP.
No. 286,916. Patented Oct. 16, 1883.
HU T v A; V V
Inventor ilnonzl/ N. PEYERS. Phclwljlhugnpher. wanin mn. at;
UNITED STATES PATENT OFFICE.
DESMOND GERALD FITZGERALD, OF BRIXTON, COUNTY OF SURREY,
' ENGLAND.
INCANDESCENT ELECTRIC LAMP.
SPECIFICATION forming part of Letters Patent No. 286,916, dated October 16, 1883.
Application filed April 18,1883. (No model.) Patented in England September 8,1881,No. 3,890; in France March 8, 1882,
No. 147,799, and in Belgium March 10, 1882, No. 57,317.
\E aZZ whom it may concern Be it known that I, DESMOND GERALD FITZGERALD, of Brixton, in the county of Surrey, England, have invented a new and useful Improvement in the Means for Production of a Vacuum in Electric Incandcscence Lamps; and I do hereby declare that the following is a full, clear, and exact description of the same.
My invention has for its object to produce a more complete vacuum in electric incandescence lamps by effecting the removal of residual oxygen, and, in some cases, residual nitrogen. To this end I employ a supplementary carbon filament, or a wire which may itself be made of oxidizablemetal-such as iron or zinc-or be covered with an oxidizable metalsuch as magnesium or other suitable substance placed within the bulb-a'nd capable of being temporarily thrown into circuit, so that by the passage 'of the current, after more or less complete exhaustion by the pump, the carbon filament or oxidizable wire will be heated, and thereby effect the absorption of the residual oxygen, and when magnesium is employed the residual nitrogen contained in the bulb.
The invention is illustrated in the accompanying drawings, in which Figure l represents a plan and sectional side view of the neck of a lamp provided with an additional conductor. Fig. 2 is a section of a complete lamp, and Fig. 3 is a detail view of the extra or supplemental filament mounted upon its conductors.
D and E are the usual wire conductors, carrying the light-giving filament A. Into the neck of the lamp I introduce another conducting-wire, M, and upon this wire and one of the other conducting-wires, D, is mounted the supplemental filament N. By means of the conductors D and M a current may be passed through the filament N without going through the light-giving filament A. This extra filament N may be formed either of an oxidizable metalsuch as iron or zincin which case, when sufficiently heated, it effects directly the abstraction of oxygen, or it may be of unoxidizable metal-such as platinum in which case it may be utilized for raising the temperature of the atmosphere withinthe glass vessel during the process of exhaustion,
Oxygen OthEl "gaseous bOdy may be com pletely effected. Of these methods I prefer to use iron wire surrounded by a ribbon of magnesium, as shown at P. The length of the iron wire should not exceed one and onehalf inch and the magnesium ribbon may be three fourths of an inch long. While the lamp is under the action of the mercury-pump, a current is passed through the filament N of sufficient strength to produce a low red heat, and at the same time external heat may be applied to prevent any of the magnesia formed from cracking the glass should it fall away from the heated wire. When the magnesium has absorbed all the residual oxygen, the connections are shifted to the two main conductors D E, and the carbon filament A is raised to the required temperature, thus driving out any secluded gases, which will be carried away by the air-pump. The supplemental filament may be again heated and caused to absorb any trace of oxygen that may have been left, and also, as it would appear, some portion of the nitrogen.
What I claim as new is 1. In an electric lamp having main-wire terminals and a light-giving filament, an additional or supplemental filament and an in dependent electrical conductor for absorbing the oxygen, as described. g
2. In an electric lamp having main-wire terminals and a lightgiving filament, a supplemental filament and an independent electrical conductor, the said supplemental fila- .ment being formed of or provided with a material readily oxidized, as and for the purpose set forth.
The foregoing specification of my invention for improvement in electric incandescence lamps signed by me this 14th day of March, A. D. 1883.
DESMOND G. FITZGERALD.
Witnesses:
WM. CLARK, 53 Chancery Lane, London, PaientAgent.
T. W. KENNARD, 53 Chancery Lane, Clerk.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US286916A true US286916A (en) | 1883-10-16 |
Family
ID=2356112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US286916D Expired - Lifetime US286916A (en) | Desmond geeald fitz-geeald |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US286916A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2449786A (en) * | 1943-03-05 | 1948-09-21 | Westinghouse Electric Corp | Getter |
| US2463143A (en) * | 1947-06-23 | 1949-03-01 | Hynson Westcott & Dunning Inc | Anaerobe jar |
| US2804564A (en) * | 1954-04-28 | 1957-08-27 | Machlett Lab Inc | Getter structure |
| US2837680A (en) * | 1954-04-28 | 1958-06-03 | Machlett Lab Inc | Electrode support |
| US20110166536A1 (en) * | 2007-10-30 | 2011-07-07 | Hyde Roderick A | Substrates for nitric oxide releasing devices |
| US20110182970A1 (en) * | 2007-10-30 | 2011-07-28 | Hyde Roderick A | Nitric oxide sensors and systems |
-
0
- US US286916D patent/US286916A/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2449786A (en) * | 1943-03-05 | 1948-09-21 | Westinghouse Electric Corp | Getter |
| US2463143A (en) * | 1947-06-23 | 1949-03-01 | Hynson Westcott & Dunning Inc | Anaerobe jar |
| US2804564A (en) * | 1954-04-28 | 1957-08-27 | Machlett Lab Inc | Getter structure |
| US2837680A (en) * | 1954-04-28 | 1958-06-03 | Machlett Lab Inc | Electrode support |
| US20110166536A1 (en) * | 2007-10-30 | 2011-07-07 | Hyde Roderick A | Substrates for nitric oxide releasing devices |
| US20110182970A1 (en) * | 2007-10-30 | 2011-07-28 | Hyde Roderick A | Nitric oxide sensors and systems |
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