US507558A - Incandescent electric lamp - Google Patents
Incandescent electric lamp Download PDFInfo
- Publication number
- US507558A US507558A US507558DA US507558A US 507558 A US507558 A US 507558A US 507558D A US507558D A US 507558DA US 507558 A US507558 A US 507558A
- Authority
- US
- United States
- Prior art keywords
- cement
- lamp
- incandescent electric
- electric lamp
- plug
- 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 40
- 238000002844 melting Methods 0.000 description 14
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 8
- QIQXTHQIDYTFRH-UHFFFAOYSA-N Stearic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- 239000007787 solid Substances 0.000 description 8
- 235000021355 Stearic acid Nutrition 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive Effects 0.000 description 4
- 229910001651 emery Inorganic materials 0.000 description 4
- 239000003925 fat Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000036633 rest Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000008117 stearic acid Substances 0.000 description 4
- 241001608519 Bursera fagaroides Species 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 239000004859 Copal Substances 0.000 description 2
- 235000004431 Linum usitatissimum Nutrition 0.000 description 2
- 240000006240 Linum usitatissimum Species 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- DCXXMTOCNZCJGO-UHFFFAOYSA-N Stearin Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 description 2
- 235000015450 Tilia cordata Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 235000004426 flaxseed Nutrition 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 239000012261 resinous substance Substances 0.000 description 2
- 230000000630 rising Effects 0.000 description 2
- 235000002316 solid fats Nutrition 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 incandescent electric lamps of that class in which the neck of the lamp bulb is closed air-tight by a plug of fusible cement, and has especially to do with the composition of the cement of which the plug is made.
- A is the glass bulb of the lamp
- C is the plug of fusible cement, which is poured into the lamp neck in the melted state, and which is supported while soft by the disk D, of mica or other suitable material.
- the disk D rests upon the shoulder a, formed in the neck of the lamp bulb.
- F is the filament, attached at f and f to the leading-in wires W and W.
- D is a heat-reflecting disk, located in the lamp neck, between the cement plug and the filament, for the purpose of protecting the former from the radiant heat of the latter, and rests upon the shoulder a, formed in the neck of the lamp bulb, from which it is prevented from rising by the coils w and w, in the leading-in wires W and W.
- the wires W and W are attached at S and S to the proper parts of an ordinary base or cap B, which surmounts the lamp neck and to which it is secured by plaster in the usual manner.
- the cement plug C of some resinous substance like ordinary rosin, copal, 850., whose flexibility and adhesiveness have been increased by the addition of a quantity of a suitable oil, as linseed for example.
- a suitable oil as linseed for example.
- oils which are liquid at ordinary temperatures
- a fatty body which is solid at ordinary temperatures for example, below or there is no perceptible softening of the cement until a heat somewhat above the melting point of the fatty body itself is reached.
- the temperature of the cement plug of a lamp of the class described, if properly constructed, is not above while in operation, the cement thus composed remains entirely unaflected, while one containing an oil, in sufficient quantity to obtain the desired flexibility, softens considerably.
- stearic acid is well adapted for the purpose. Its melting point is about Fahrenheit, which is considerably above the normal temperature of the cement plug of an operating lamp of the class described. Stearin, paraffine, and other fatty bodies which are solid at ordinary temperatures may be used, but I prefer stearic acid. These solid fats impart to the resinous base, flexibility and adhesiveness in an equal, if not superior degree, as the oils, while they do not tend to lower the melting point of the cement to nearly so great an extent whereby much advantage is gained from their use, since it is very desirable to keep the melting point of the cement as high as is consistent with the necessary flexibility and adhesiveness.
- the gist of my invention consists, in ren- 5 dering the resinous cement by which the neck of an incandescent lamp is closed air-tight, flexible and adhesive by the addition of a I solid fat or fatty acid, whereby the greatest flexibility and adhesiveness combined with the highest melting point is secured.
- I claim-- 1 In an incandescent electric lamp, the neck of which is adapted to be olosedair-tight by a plug of fusible cement, a cement plug composed of a resinous body made flexible and adhesive by fat solid at ordinary temperatures, substantially as and for the purpose set forth.
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Description
(No Model.)
- I B. NIGKERSON.
INCANDESGEHIT ELECTRIC LAMP;
No. 507,558. Patented 055. 31, I893.
UNrrn WILLIAM EMERY NICKERSON, OF CAMBRIDGE, MASSACHUSETTS.
INCANDESCENT ELECTRIC LAMP.
SPECIFICATION forming part of Letters Patent No. 507,558, dated October 31, 1893.
Application filed August 5, 1893. Serial No. 482,469- (No model.)
To all whom it may concern.-
Be it known that I, WILLIAM EMERY NIcK- 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 drawing, is a specification.
My invention relates to incandescent electric lamps of that class in which the neck of the lamp bulb is closed air-tight by a plug of fusible cement, and has especially to do with the composition of the cement of which the plug is made.
My invention is illustrated in the accompanying drawing, which represents, partly in vertical section and partly in side elevation, an incandescent electric lamp of the class referred to.
In the drawing, A is the glass bulb of the lamp, and C is the plug of fusible cement, which is poured into the lamp neck in the melted state, and which is supported while soft by the disk D, of mica or other suitable material. The disk D rests upon the shoulder a, formed in the neck of the lamp bulb.
F is the filament, attached at f and f to the leading-in wires W and W.
D is a heat-reflecting disk, located in the lamp neck, between the cement plug and the filament, for the purpose of protecting the former from the radiant heat of the latter, and rests upon the shoulder a, formed in the neck of the lamp bulb, from which it is prevented from rising by the coils w and w, in the leading-in wires W and W. The wires W and W are attached at S and S to the proper parts of an ordinary base or cap B, which surmounts the lamp neck and to which it is secured by plaster in the usual manner.
It has been customary heretofore, to make the cement plug C of some resinous substance like ordinary rosin, copal, 850., whose flexibility and adhesiveness have been increased by the addition of a quantity of a suitable oil, as linseed for example. I prefer to use as the basis of my cement a compound consisting of pine rosin chemically combined with oxide of lime, which has been subjected to the action of a vacuum at a temperature considerably above its melting point, mixed with a quantity of sand, in such proportion that it a little more than fills the spaces between the sand particles, as set forth in my patents No. 501,530, dated July 18,1893; No. 501,531, dated July 18, 1893, and No. 500,075, dated June 20, 1893.
When oils (which are liquid at ordinary temperatures), are used for imparting flexibility and adhesiveness to the cement; there is a gradual softening of the cement as the heat increases from ordinary temperatures upward, so that considerably below the actual melting point of the cement, it becomes too soft to obtain the best results. When, however, a fatty body which is solid at ordinary temperatures, for example, below or there is no perceptible softening of the cement until a heat somewhat above the melting point of the fatty body itself is reached. As the temperature of the cement plug of a lamp of the class described, if properly constructed, is not above while in operation, the cement thus composed remains entirely unaflected, while one containing an oil, in sufficient quantity to obtain the desired flexibility, softens considerably. I have found by experiments, that stearic acid is well adapted for the purpose. Its melting point is about Fahrenheit, which is considerably above the normal temperature of the cement plug of an operating lamp of the class described. Stearin, paraffine, and other fatty bodies which are solid at ordinary temperatures may be used, but I prefer stearic acid. These solid fats impart to the resinous base, flexibility and adhesiveness in an equal, if not superior degree, as the oils, while they do not tend to lower the melting point of the cement to nearly so great an extent whereby much advantage is gained from their use, since it is very desirable to keep the melting point of the cement as high as is consistent with the necessary flexibility and adhesiveness.
The gist of my invention consists, in ren- 5 dering the resinous cement by which the neck of an incandescent lamp is closed air-tight, flexible and adhesive by the addition of a I solid fat or fatty acid, whereby the greatest flexibility and adhesiveness combined with the highest melting point is secured.
I claim-- 1. In an incandescent electric lamp, the neck of which is adapted to be olosedair-tight by a plug of fusible cement, a cement plug composed of a resinous body made flexible and adhesive by fat solid at ordinary temperatures, substantially as and for the purpose set forth.
2. In an incandescent electric lamp, the combination of the glassbulb A having a neck adapted to be closed air-tight by a plug of fusible cement, the filament F, and the lead ing-in wires Wand W; with the cement plug a
Publications (1)
Publication Number | Publication Date |
---|---|
US507558A true US507558A (en) | 1893-10-31 |
Family
ID=2576391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US507558D Expired - Lifetime US507558A (en) | Incandescent electric lamp |
Country Status (1)
Country | Link |
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US (1) | US507558A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3997809A (en) * | 1975-05-16 | 1976-12-14 | Kyp Robert J | Decorative lamp having an integral base and envelope |
-
0
- US US507558D patent/US507558A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3997809A (en) * | 1975-05-16 | 1976-12-14 | Kyp Robert J | Decorative lamp having an integral base and envelope |
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