US255362A - Edward weston - Google Patents
Edward weston Download PDFInfo
- Publication number
- US255362A US255362A US255362DA US255362A US 255362 A US255362 A US 255362A US 255362D A US255362D A US 255362DA US 255362 A US255362 A US 255362A
- Authority
- US
- United States
- Prior art keywords
- lamps
- thorium
- air
- weston
- edward weston
- 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
- 229910052776 Thorium Inorganic materials 0.000 description 12
- 239000000126 substance Substances 0.000 description 12
- ZSLUVFAKFWKJRC-UHFFFAOYSA-N thorium Chemical compound [Th] ZSLUVFAKFWKJRC-UHFFFAOYSA-N 0.000 description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 6
- 230000002745 absorbent Effects 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 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
- 239000004020 conductor Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- XSSPKPCFRBQLBU-UHFFFAOYSA-N Thorium(IV) orthosilicate Chemical compound [Th+4].[O-][Si]([O-])([O-])[O-] XSSPKPCFRBQLBU-UHFFFAOYSA-N 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 2
- ASCUXPQGEXGEMJ-GPLGTHOPSA-N [(2R,3S,4S,5R,6S)-3,4,5-triacetyloxy-6-[[(2R,3R,4S,5R,6R)-3,4,5-triacetyloxy-6-(4-methylanilino)oxan-2-yl]methoxy]oxan-2-yl]methyl acetate Chemical compound CC(=O)O[C@@H]1[C@@H](OC(C)=O)[C@@H](OC(C)=O)[C@@H](COC(=O)C)O[C@@H]1OC[C@@H]1[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](OC(C)=O)[C@H](NC=2C=CC(C)=CC=2)O1 ASCUXPQGEXGEMJ-GPLGTHOPSA-N 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- -1 mangan- 6o use Chemical compound 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000001264 neutralization Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052847 thorite Inorganic materials 0.000 description 2
- ZCUFMDLYAMJYST-UHFFFAOYSA-N thorium dioxide Chemical compound O=[Th]=O ZCUFMDLYAMJYST-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N tin hydride Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- the lamps to the manufacture otiwhich this my present invention relates are those in which a conductor of carbon or similar substance is used,tbe said conductor being mounted on metallic wires sealed into a transparent receiver from which the air has been as far asposs'ible exhausted.
- the objectot' the sa diuvention is to faciliu.
- substance thoria or thorina which.[ utilize for thispurpose, is the only known oxide of thorium-oneot' the earthmetals.
- the preparation of thorinafrom minerals containing thorium may be efi'ected in various ways, according to thenature of the substances with which it is associated, From thorite it tion contains the thorium,
- hydrochloric acid may be separated verized ore with hydrochloric acid, evaporating to dryness, digesting the residue with weak acid in order to separate the silica, filtering,-
- the resulting product is oxide of thorium, which maybe used in the manner directed. Should much iron, mangan- 6o use, or uranium be present, these bodies may be separated by redissolving-the hydrate in weak hydrochloric acid, andthe thorium precipitated as potassio-thorinicsulphate by treatmeut'witl a; botsaturatedsolntiou pt neutral potassi' suiphateTThe precipitate thus obtained is dissolved inhot water andtreated with ammonia, and the resulting precipitate ignited, as before, Tlioria, when used as above described,is a powerful absorbent of the re- 7o sidual gas in an imperfect vacuum, and as such forms a valuable element in the manufacture of durable incandescent lamps.
- the drawing hereto annexed illustrates a simple device for simultaneously exhausting a 7 5 number of lamps according to the method proposed
- the apparatus composed entirely of glass,consis'tsot' a main stem, A, with branches and represented by B;
- the stem A is arranged suitable v exhaust apparatus, and contains a stop-cock, E, by means of which communication with the pump is cut off.
- the stem is connected, permanently or detachably, a retort, proper quantitymt' thorina.
- One or any desired number of lamps, D D are welded to the branches B by sealing-tubes C- 0.
- the plug E is turned to establish communication with the air-pump.
- the air is go then withdrawn as perfectly as possible, the thorina in the retort 13 being at the same time
- the stem A is then cut 05 by the stop-cock from the pump, and the thorina allowed to cool, after 5 which the lamps are detached by heating the stems O and twisting them off.
- This apparatus is typical of others, which may be employed by treating thetinely-pnl- 50 for attachment to a F, containing a Paten t, is-
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Luminescent Compositions (AREA)
Description
' (No Model.)
, E. WESTON.
, ABSORBENT FOR ELECTRIC LAMPS. I
110.255.3622. Patented Mar. 21,1882.
Nr'rn STATES EDW'ARD WESTON, OF NEWARK, NEW JERSEY, ASSlGNCR TO THE USI TED STATES ELECTRIC LIGHTING COMPANY, on NEW YORK, N. Y.
A BSORBENT Foe eteiornio LAMPS v1 SPECIFICATION forming part of Letters Patent No.
ceases, dated March 21, 1882.
Application filed October 17, 18 81. (No model.)
ing is a specification.
The lamps to the manufacture otiwhich this my present invention relates are those in which a conductor of carbon or similar substance is used,tbe said conductor being mounted on metallic wires sealed into a transparent receiver from which the air has been as far asposs'ible exhausted.
The objectot' the sa diuvention is to faciliu.
' tate the withdrawal of an comma-tubes, and
to produce therein a inafter specified,
' another application I have set forth a plan for higher vacuum than has heretofore been attained, and this Iefl'ect by the employment, under certain conditionshereof the oxide of thorium. 1n
utilizing such a substance, consisting substantially in placing in each lamp a small quantity of the oxide of thorium, which under proper manipulation absorbs with great avidity the residual air of an imperfect vacuum. In this waya highvacuum is maintainedin the globes.
quantity ot'this This object I have found may be attained'in another and more economical manner by connectiug a bulb or retort containinga proper substance with the air-exhaust apparatus, heating it, and then allowingit to cool after the process of withdrawing the air has been carried to the usual point, and the portion of the apparatus to which the lamp and the retort are connected cut oft" from the pump.
-In this way a number of lamps may be simulin the apparatus employed taneously exhausted, and then detached in the usual manner and sealed. In this process and in the conduct ,,thereot lie thy-present improvements. The
substance thoria or thorina,which.[ utilize for thispurpose, is the only known oxide of thorium-oneot' the earthmetals. The preparation of thorinafrom minerals containing thorium may be efi'ected in various ways, according to thenature of the substances with which it is associated, From thorite it tion contains the thorium,
- extending therefrom,
heated by means of a spirit-lamp.
may be separated verized ore with hydrochloric acid, evaporating to dryness, digesting the residue with weak acid in order to separate the silica, filtering,-
and treating the solution with snlphydric acid The resulting soluto separate leudvand tin.
which may be precipitated as a hydrate by ammonia, and the precipitate ignited, The resulting product is oxide of thorium, which maybe used in the manner directed. Should much iron, mangan- 6o use, or uranium be present, these bodies may be separated by redissolving-the hydrate in weak hydrochloric acid, andthe thorium precipitated as potassio-thorinicsulphate by treatmeut'witl a; botsaturatedsolntiou pt neutral potassi' suiphateTThe precipitate thus obtained is dissolved inhot water andtreated with ammonia, and the resulting precipitate ignited, as before, Tlioria, when used as above described,is a powerful absorbent of the re- 7o sidual gas in an imperfect vacuum, and as such forms a valuable element in the manufacture of durable incandescent lamps.
The drawing hereto annexed illustrates a simple device for simultaneously exhausting a 7 5 number of lamps according to the method proposed The apparatus, composed entirely of glass,consis'tsot' a main stem, A, with branches and represented by B; The stem A is arranged suitable v exhaust apparatus, and contains a stop-cock, E, by means of which communication with the pump is cut off. At a convenient poin talon g the stem is connected, permanently or detachably, a retort, proper quantitymt' thorina. One or any desired number of lamps, D D, are welded to the branches B by sealing-tubes C- 0. To exhaust the lamps the plug E is turned to establish communication with the air-pump. The air is go then withdrawn as perfectly as possible, the thorina in the retort 13 being at the same time The stem A is then cut 05 by the stop-cock from the pump, and the thorina allowed to cool, after 5 which the lamps are detached by heating the stems O and twisting them off. This apparatus is typical of others, which may be employed by treating thetinely-pnl- 50 for attachment to a F, containing a Paten t, is-
for the; same purpose, so that I would not be understood as confining myself to its use in carrying out my process.
' I am aware that substances such as charcoal have been employed for the purpose of absorb ing the gases driven ofl' from the carbon con doctors in the manufacture of lamps. This I do not claim herein.
Having now described my invention, what I- claim as new, and desire to secure by Letters 1-."The improvement in the manufacture of incandescent electric lamps which consists in firstexhausting mechanically the globes as
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US255362A true US255362A (en) | 1882-03-21 |
Family
ID=2324652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US255362D Expired - Lifetime US255362A (en) | Edward weston |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US255362A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2960475A (en) * | 1958-01-30 | 1960-11-15 | Philips Corp | Thorium-containing getters for electric discharge tubes |
-
0
- US US255362D patent/US255362A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2960475A (en) * | 1958-01-30 | 1960-11-15 | Philips Corp | Thorium-containing getters for electric discharge tubes |
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