US503669A - Incandescent electric lamp - Google Patents
Incandescent electric lamp Download PDFInfo
- Publication number
- US503669A US503669A US503669DA US503669A US 503669 A US503669 A US 503669A US 503669D A US503669D A US 503669DA US 503669 A US503669 A US 503669A
- Authority
- US
- United States
- Prior art keywords
- lamp
- cone
- incandescent electric
- electric lamp
- filament
- 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
- 239000004568 cement Substances 0.000 description 22
- 239000011521 glass Substances 0.000 description 12
- 239000000126 substance Substances 0.000 description 10
- 239000010445 mica Substances 0.000 description 8
- 229910052618 mica group Inorganic materials 0.000 description 8
- 239000000203 mixture Substances 0.000 description 6
- MJBPUQUGJNAPAZ-AWEZNQCLSA-N butin Chemical compound C1([C@@H]2CC(=O)C3=CC=C(C=C3O2)O)=CC=C(O)C(O)=C1 MJBPUQUGJNAPAZ-AWEZNQCLSA-N 0.000 description 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N Boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 235000010338 boric acid Nutrition 0.000 description 2
- 229960002645 boric acid Drugs 0.000 description 2
- 229910001651 emery Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 235000010339 sodium tetraborate Nutrition 0.000 description 2
- 239000004328 sodium tetraborate Substances 0.000 description 2
- 230000000576 supplementary Effects 0.000 description 2
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
- H01J19/32—Anodes
- H01J19/36—Cooling of anodes
Definitions
- My invention relates to that class of incandescent electric lamps in which the glass globe is not continuous, butin which a fusible cement, either in connection with a glass stopper or as a plug by itself, is used for the purpose of sealing or closing the neck of the lamp air tight.
- Figure 1 shows in section an incandescent electric lamp embodying my device.
- Fig. 2 shows my device in connection with a supporting disk.
- Fig. 3 shows a method of duplication.
- Figs. 4, 5 and 6, show steps in the manufacture of my device.
- A represents the glass globe of an incandescent electric lamp
- B the filament attached at b b to the leading-in wires 0 C.
- the D is a disk of mica or other suitable substance adapted to support the plug of fusible cementE by which the lamp globe is rendered air tight.
- the plug of cementE is protected, from the radiant heat of the filament, (see Fig. 1,) by the hollow cone G, made of mica or other suitable substance. Owing to the reflection of the curved surfaces of the interior of the globe the heat of the filament tends to be largely concentrated into the neck of the lamp, and upon the cement plug E, unless the plug be protected.
- the cone G is located in the neck of the lamp with its apex toward the filament and its base to the disk D.
- the base of the cone is of such a diameter as to fit the neck of the lamp and be the'rebymaintained in position.
- the leading-in wires 0 0 pass through small holesin the sides of the cone and also tend to hold it in place.
- the angle of the cone is such that the heat rays from the filament and the interior surface of the globe strike its sides at an inclination at which they are nearly all reflected outward instead of passing through and striking the disk D.
- the cement plug E is unprotected and the heat rays are allowed to strike it they are liable to heat and soften it.
- a supplementary disk F is shown located in the neck of the lamp at the apex of the cone. This disk serves as a firm support for the cone.
- Fig. 3 shows a method by which a second cone G may be used.
- Fig. 4 shows the shape in which the sheet of mica or other substance may be cut, previous to forming it into a cone.
- Fig. 5 shows the sheet formed into a cone and held in shape by small rivets I I.
- the cone may be held together by having a small quantity of borax or boracic acid fused into the seam.
- H H are two small holes located in the sides of the cone, (see Fig. 5,) through which the leading-in wires pass. The wires may be inserted into the holes H H by means of cuts H H extending from the holes H H to the edge of the cone.
- Fig. 6 shows the cone in plan with the base uppermost.
- the gist of my invention consists in the use in an incandescent electric lamp of a cone of mica or other suitable substance located, in the neck of the lamp, for the purpose of reflecting the radiant heat of the filament outward in order to prevent the softening of a fusible cement by which the neck of the lamp is rendered air tight.
- My device is equally applicable to lampsin which the neck is closed by a glass stopper rendered air tight by any'viscous'substance or cement.
- a heat reflector made inthe form of acone,with its apex centrally located I between theleading-inwiresand havingholesg in its conical surface for the passage of the leading-in wires, substantially as and for the 5 purpose set forth.
Description
UNITED STATES PATENT OFFICE.
\VILLIAM EMERY NICKERSON, OF CAMBRIDGE, MASSACHUSETTS.
INC AN DESCENT ELECTRIC LAMP.
SPECIFICATION forming part of Letters Patent No. 503,669, dated August 22, 1893.
Application filed April 7, 1893. Serial No. 469,404. (No model.)
To all whom it may concern.-
Be it known that I, WILLIAM EMERY N IOK- ERSON, of Cambridge, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Incandescent Electric Lamps, of which the following, taken in connection with the accompanying drawings, is a specification.
My invention relates to that class of incandescent electric lamps in which the glass globe is not continuous, butin whicha fusible cement, either in connection with a glass stopper or as a plug by itself, is used for the purpose of sealing or closing the neck of the lamp air tight.
It consists in a device by which the heat of the filament is prevented from reaching the neck of the lamp and softening the cement.
The accompanying drawings illustrate the application of myinvention.
Figure 1, shows in section an incandescent electric lamp embodying my device. Fig. 2, shows my device in connection with a supporting disk. Fig. 3, shows a method of duplication. Figs. 4, 5 and 6, show steps in the manufacture of my device.
In the drawings A represents the glass globe of an incandescent electric lamp, and B the filament attached at b b to the leading-in wires 0 C.
D is a disk of mica or other suitable substance adapted to support the plug of fusible cementE by which the lamp globe is rendered air tight. The plug of cementEis protected, from the radiant heat of the filament, (see Fig. 1,) by the hollow cone G, made of mica or other suitable substance. Owing to the reflection of the curved surfaces of the interior of the globe the heat of the filament tends to be largely concentrated into the neck of the lamp, and upon the cement plug E, unless the plug be protected. The cone G is located in the neck of the lamp with its apex toward the filament and its base to the disk D. The base of the cone is of such a diameter as to fit the neck of the lamp and be the'rebymaintained in position. The leading-in wires 0 0 pass through small holesin the sides of the cone and also tend to hold it in place. The angle of the cone is such that the heat rays from the filament and the interior surface of the globe strike its sides at an inclination at which they are nearly all reflected outward instead of passing through and striking the disk D. When the cement plug E is unprotected and the heat rays are allowed to strike it they are liable to heat and soften it.
In Fig. 2, a supplementary disk F is shown located in the neck of the lamp at the apex of the cone. This disk serves as a firm support for the cone.
Fig. 3, shows a method by which a second cone G may be used.
Fig. 4, shows the shape in which the sheet of mica or other substance may be cut, previous to forming it into a cone.
Fig. 5, shows the sheet formed into a cone and held in shape by small rivets I I. Instead of using the rivets I I the cone may be held together by having a small quantity of borax or boracic acid fused into the seam. H H are two small holes located in the sides of the cone, (see Fig. 5,) through which the leading-in wires pass. The wires may be inserted into the holes H H by means of cuts H H extending from the holes H H to the edge of the cone.
Fig. 6, shows the cone in plan with the base uppermost.
The gist of my invention consists in the use in an incandescent electric lamp of a cone of mica or other suitable substance located, in the neck of the lamp, for the purpose of reflecting the radiant heat of the filament outward in order to prevent the softening of a fusible cement by which the neck of the lamp is rendered air tight.
My device is equally applicable to lampsin which the neck is closed by a glass stopper rendered air tight by any'viscous'substance or cement.
'1 claim- 1. In an incandescent electric lamp, the combination of the glass globe A, filament B, leading-inwires O G, fusible cement plug E and cement-supporting disk D, said disk being located between the cement plug and the vacuous portion of the lamp and forming a part of the inclosingwalls of the vacuum chamber and adapted to prevent the cement from running into the lamp wh'en soft; with a coned reflector G, located within the neck of the lamp with its apex towardthe filament, adapted to protect the cement supporting disk D f rom the heatrays of the filament sjii'bstantially' as and for the purpose set forth,
2. In an incandescent electric lamp, the combination of the glass globe A, filament B and cement plngE; with asupplemental disk F, having a chamber between it and the cementplug'E and a refleetingcone G, s'r'ibstam tially as and for the purpose set forth.
3. In combination with an incandescent electric lamp; a heat reflector made inthe form of acone,with its apex centrally located I between theleading-inwiresand havingholesg in its conical surface for the passage of the leading-in wires, substantially as and for the 5 purpose set forth.
e e a,
FEAN'K G. PARKER,
FRANK G. HATTIE.
Publications (1)
Publication Number | Publication Date |
---|---|
US503669A true US503669A (en) | 1893-08-22 |
Family
ID=2572506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US503669D Expired - Lifetime US503669A (en) | Incandescent electric lamp |
Country Status (1)
Country | Link |
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US (1) | US503669A (en) |
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- US US503669D patent/US503669A/en not_active Expired - Lifetime
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