US519099A - Incandescent electric lamp - Google Patents
Incandescent electric lamp Download PDFInfo
- Publication number
- US519099A US519099A US519099DA US519099A US 519099 A US519099 A US 519099A US 519099D A US519099D A US 519099DA US 519099 A US519099 A US 519099A
- Authority
- US
- United States
- Prior art keywords
- per cent
- wires
- incandescent electric
- lamp
- electric lamp
- 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 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 7
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 7
- 239000011521 glass Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 4
- 229960002645 boric acid Drugs 0.000 description 4
- 235000010338 boric acid Nutrition 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 4
- 229910001948 sodium oxide Inorganic materials 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 3
- 239000000037 vitreous enamel Substances 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/04—Joining glass to metal by means of an interlayer
- C03C27/042—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/20—Seals between parts of vessels
- H01J5/22—Vacuum-tight joints between parts of vessel
- H01J5/26—Vacuum-tight joints between parts of vessel between insulating and conductive parts of vessel
Definitions
- WlT/VELSSES INVENTO/i g %a s I Q BV a WM ATTORNEY 1/ THE NATIONAL LHHOGRAPHING ccc cc v UNITED STATES PATENT OFFICE.
- My invention relates to that class of incandescent electric lamps wherein the leading in wires are made of iron preferably covered with a vitreous enamel. Said invention has particular reference to lamps of this class wherein the globe has an opening which is closed by means of a stopper.
- the object of my invention is to supply a form of glass adapted for the part of a lamp surrounding the leading in wires, the coefficient of expansion of which is as nearly as possible equal to that of the iron wires, and which is adapted to unite with and absorb any oxide forming on the surface of the iron. These are important factors in the preservation of the seal.
- the elements and proportions employed by-me in the manufacture of glass for this purpose are as follows, the proportions given being approximate.
- silica SiO fifty per cent
- boracic acid 13 0 5.2 per cent
- sodium oxide Na O
- barium oxide BaO
- zinc oxide ZnO
- the percentages here given are those which I have found best suited to my purpose, but a considerable variation in these percentages is allowed. I may, for instance, vary the percentage of silica from fifty to sixty per cent. that of boracic acid from three and a half to six per cent; sodium oxide from ten to twenty; barium oxide from twenty to thirty; zinc oxide from five to six per cent.
- My invention is illustrated in the accompanying drawing which is an elevation of a preferred form of lamp made of my composition, in whole or in part.
- I can either make the whole lamp of this composition or the neck 1 of an ordinary lamp in which iron leading-in wires are employed may be alone made of this particular glass.
- What I claim is- 1.
- a glassglohe and leading in wires the glass around the wires having substantially the following composition:silica, fifty to sixty per cent, boracic acid, three and a half to six per cent., sodium oxide, ten to twenty per cent, barium oxide, thirty to forty per cent, zinc oxide, five to six per cent.
- a bulb having an open neck, a stopper fitting said neck and leading-in wires molded into said stopper; said stopper having substantially the following composition:silica, fifty to sixty per cent, boracic acid, three and a half to six per cent, sodium oxide, ten to twenty per cent, barium oxide, thirty to forty per cent, zinc oxide, five to six per cent.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Description
-(No Model.)
F. S. SMITH. INGANDESGENT ELBGTRIG LAMP. I No. 519,099. Patented May 1, 1894.
WlT/VELSSES: INVENTO/i g %a s I Q BV a WM ATTORNEY 1/ THE NATIONAL LHHOGRAPHING ccc cc v UNITED STATES PATENT OFFICE.
FRANK S. SMITH, OF PITTSBURG, PENNSYLVANIA.
INCANDESCENT ELECTRIC LAMP.
SPECIFICATION forming part of Letters Patent No. 519,099, dated May 1, 1894.
Application filed November 29, 1892. Serial No- 453,552. (No model.)
To all whom it may concern.-
Be it known that I, FRANK S. SMITH, a citizen of the United States, residing in Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Incandescent Electric Lamps, (Case No. 517,) of which the following is a specification.
My invention relates to that class of incandescent electric lamps wherein the leading in wires are made of iron preferably covered with a vitreous enamel. Said invention has particular reference to lamps of this class wherein the globe has an opening which is closed by means of a stopper.
The object of my invention is to supply a form of glass adapted for the part of a lamp surrounding the leading in wires, the coefficient of expansion of which is as nearly as possible equal to that of the iron wires, and which is adapted to unite with and absorb any oxide forming on the surface of the iron. These are important factors in the preservation of the seal. The elements and proportions employed by-me in the manufacture of glass for this purpose are as follows, the proportions given being approximate. It is, of course, to be understood that I do not limit myself to the exact proportions named: silica (SiO fifty per cent; boracic acid (13 0 5.2 per cent; sodium oxide (Na O), 13.2 per cent; barium oxide (BaO), 26.4 per cent; zinc oxide (ZnO), 5.2 per cent.
As above stated, the percentages here given are those which I have found best suited to my purpose, but a considerable variation in these percentages is allowed. I may, for instance, vary the percentage of silica from fifty to sixty per cent. that of boracic acid from three and a half to six per cent; sodium oxide from ten to twenty; barium oxide from twenty to thirty; zinc oxide from five to six per cent.
My invention is illustrated in the accompanying drawing which is an elevation of a preferred form of lamp made of my composition, in whole or in part.
I can either make the whole lamp of this composition or the neck 1 of an ordinary lamp in which iron leading-in wires are employed may be alone made of this particular glass.
In those lamps wherein the globe is closed by a stopper through which the wires pass as shown in the figure, I prefer to make the stop per 2 alone of this composition. This glass is best used in connection with iron wires which have been covered with a vitreous enamel before the glass is molded around them. Any fiuxing enamel may be found useful in this connection.
What I claim is- 1. In an incandescent lamp, a glassglohe and leading in wires, the glass around the wires having substantially the following composition:silica, fifty to sixty per cent, boracic acid, three and a half to six per cent., sodium oxide, ten to twenty per cent, barium oxide, thirty to forty per cent, zinc oxide, five to six per cent.
2. In an incandescent lamp, a bulb having an open neck, a stopper fitting said neck and leading-in wires molded into said stopper; said stopper having substantially the following composition:silica, fifty to sixty per cent, boracic acid, three and a half to six per cent, sodium oxide, ten to twenty per cent, barium oxide, thirty to forty per cent, zinc oxide, five to six per cent.
In testimony whereof I have hereunto subscribed my name this 10th day of October, A. D. 1892.
FRANK S. SMITH.
Witnesses:
J AMES WM. SMITH, HAROLD S. MACKAYE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US519099A true US519099A (en) | 1894-05-01 |
Family
ID=2587898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US519099D Expired - Lifetime US519099A (en) | Incandescent electric lamp |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US519099A (en) |
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0
- US US519099D patent/US519099A/en not_active Expired - Lifetime
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