US508659A - Leading-in wire for incandescent lamps - Google Patents
Leading-in wire for incandescent lamps Download PDFInfo
- Publication number
- US508659A US508659A US508659DA US508659A US 508659 A US508659 A US 508659A US 508659D A US508659D A US 508659DA US 508659 A US508659 A US 508659A
- Authority
- US
- United States
- Prior art keywords
- wires
- leading
- filament
- wire
- 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.)
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 12
- 239000011521 glass Substances 0.000 description 8
- 229910052697 platinum Inorganic materials 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 210000001503 Joints Anatomy 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000002459 sustained Effects 0.000 description 2
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/18—Mountings or supports for the incandescent body
Definitions
- My invention relates to leading-in wires of incandescent lamps and supports for the filaments of the same. It frequently happens that the leading-in Wires for conveying the current are not of sufficient stability or stiffness to sustain the weight of the filament itself and the joints without the addition of other devices. Thus, if soft platinum is used to pass through the glass and is sealed therein the soft platinum maybe too flexible where it leaves the seal to sustain the weight of a comparatively coarse filament, and a vigorous jar given to the lamp might cause the wires to bend. This diffic'ulty is overcome in my invention by supporting the filament on stout wires which are sustained separately from the sealing wires.
- Figure 1 is a central longitudinal section of a lamp embodying my invention
- Fig. 2 is a modification.
- L is a lamp bulb containing the filament F.
- This filament is securely attached to comparatively coarse wires W W anchored in the glass seal of the lamp a a.
- the current carrying wires 1 2 pass through the glass, being made of platinum of comparatively small gage and are attached at b b to the heavy sustaining wires W W, the whole forming a rigid and cheap arrangement embodying all the. desirable features required.
- wires W W are supported by secondary wires X X one end of which is sealed into the glass as before at a a and the other end of which is made into a loop loosely surrounding or firmly attached to the wires W W.
- the ends of the wires W W not attached to the filament are secured to the leading-in wires 1 2 which may be of small gage as before and upon which no considerable strain is thrown as the supports X X prevent damage.
- My invention is particularly applicable to lamps working with considerable strength of current or in which the carbon filament F is very long and comparatively coarse.
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- Vessels And Coating Films For Discharge Lamps (AREA)
Description
(No Model.)
B. THOMSON. LEADING-IN WIRE FOR INOANDESGENT LAMPS.
Patented Nov. 14, 1893.
NATIONAL LIT UNITED STATES PATENT OFFICE.
ELIHU THOMSON, OF SWAMPSCOTT,.MASSACHUSETTS, ASS-IGNOR TO THE THOMSON-HOUSTON ELECTRIC COMPANY, OF CONNECTICUT.
LEADING-IN WIRE FOR INC ANDESCENT LAMPS.
SPECIFICATION forming part of Letters Patent No. 508,659, dated November 14, 1893.
Application filed May 23, 1892- Serial No. 434,078. (No model.)
To all whom it may concern:
Be it known that I, ELIHU THOMSON, a citizen of the United States, residing at Swampscott, county of Essex, State of Massachusetts, have invented a certain new and useful Improvement in Leading-In Wires for Incandescent Lamps, of which the following is a specification.
My invention relates to leading-in wires of incandescent lamps and supports for the filaments of the same. It frequently happens that the leading-in Wires for conveying the current are not of sufficient stability or stiffness to sustain the weight of the filament itself and the joints without the addition of other devices. Thus, if soft platinum is used to pass through the glass and is sealed therein the soft platinum maybe too flexible where it leaves the seal to sustain the weight of a comparatively coarse filament, and a vigorous jar given to the lamp might cause the wires to bend. This diffic'ulty is overcome in my invention by supporting the filament on stout wires which are sustained separately from the sealing wires.
In the drawings Figure 1 is a central longitudinal section of a lamp embodying my invention, and Fig. 2 is a modification.
L is a lamp bulb containing the filament F. This filament is securely attached to comparatively coarse wires W W anchored in the glass seal of the lamp a a. The current carrying wires 1 2 pass through the glass, being made of platinum of comparatively small gage and are attached at b b to the heavy sustaining wires W W, the whole forming a rigid and cheap arrangement embodying all the. desirable features required.
In the modified construction shown in Fig. 2 wires W W are supported by secondary wires X X one end of which is sealed into the glass as before at a a and the other end of which is made into a loop loosely surrounding or firmly attached to the wires W W. In this case the ends of the wires W W not attached to the filament are secured to the leading-in wires 1 2 which may be of small gage as before and upon which no considerable strain is thrown as the supports X X prevent damage.
My invention is particularly applicable to lamps working with considerable strength of current or in which the carbon filament F is very long and comparatively coarse.
What I claim as new, and desire to secure by Letters Patent, is-
1. In an incandescent lamp, the combination with the filament and theleading-in wires, of separate supports for said filament sealed into the stem of the lamp, and serving to connect the leading-in wires with the filament, substantially as described.
2. In an incandescent lamp, the combination with stout metallic supports fused into the stem of the lamp, of a filament attached to said supports, and leading-in wires connected with said supports, substantially as described.
3. In an incandescent lamp, a filament having its ends attached to adjacent but separate metallic supports fused into the stem of the lamp, and leading-in wires passing through said stem and having their inner ends connected with said supports, substantially as described. 1
In witness whereof I have hereto set my hand this 20th day of May, 1892.
ELIHU THOMSON. Witnesses: JOHN GIBBONEY, BENJAMIN B. HULL.
Publications (1)
Publication Number | Publication Date |
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US508659A true US508659A (en) | 1893-11-14 |
Family
ID=2577488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US508659D Expired - Lifetime US508659A (en) | Leading-in wire for incandescent lamps |
Country Status (1)
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US (1) | US508659A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090079607A1 (en) * | 2007-09-26 | 2009-03-26 | Medtronic, Inc. | Chopper-stabilized analog-to-digital converter |
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0
- US US508659D patent/US508659A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090079607A1 (en) * | 2007-09-26 | 2009-03-26 | Medtronic, Inc. | Chopper-stabilized analog-to-digital converter |
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