US1572607A - Offset filament lamp - Google Patents
Offset filament lamp Download PDFInfo
- Publication number
- US1572607A US1572607A US745212A US74521224A US1572607A US 1572607 A US1572607 A US 1572607A US 745212 A US745212 A US 745212A US 74521224 A US74521224 A US 74521224A US 1572607 A US1572607 A US 1572607A
- Authority
- US
- United States
- Prior art keywords
- filament
- lamp
- filament lamp
- light source
- offset
- 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
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K7/00—Lamps for purposes other than general lighting
- H01K7/02—Lamps for purposes other than general lighting for producing a narrow beam of light; for approximating a point-like source of light, e.g. for searchlight, for cinematographic projector
Definitions
- This invention relates to devices for use in the transmission of photographs by radio, and for other purposes, and has for its principal object to provide a light source without the objections of other sources.
- FIG. 1 is a diagrammatic drawing of a usual arrangement
- Fig. 2 the novel arrangement of applicants invention, in both of which A is a filament lamp; B an apertured diaphragm; O a lens; D a light receiving surface, and a the filament of the lamp.
- this minute opening acts as a pinhole camera forming a large size image of I the filament, on the same picture screen (D) that the lens C does, and with a consequent confusion destructive of acceptable results.
- the light source need not be limited to a filament, nor that the enclosing casing need necessarily be filled with hydrogen under all circumstances.
- a light source located in approximate contact with the casing wall.
- a lamp unit a light source, and an enclosing casing, said light source being 10- cated in approximate contact with said casing Wall.
- the filament of the lamp is 10- 3.
- a filament light source, and an enclosing casing saidfilament being located in approximate-contact with the oasing wall.
- a filament light source In a .lamp'unit, a filament light source, and an enclosing casing filled with hydrogen, said filament being located in approximate contact with the casing wall.
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
Feb. 9 1926.
c. F. JENKINS OFF'SETFILAMENT LAMP Filed Oct. 22
' gmwntoz Patented Feb. 9, 1926.
UNITED STATES PATENT OFFICE.
orrsar FILAMENT LAMP.
Application filed October 22, 1924. Serial No. 745,212.
To all whom it may concern:
Be it known that I, CHARLES FRANCIS JENKINS, citizen of the United States, residing at Washington, District of Columbia,
have invented certain new and useful Improvements in Offset Filament Lamps, of which the following is a specification.
This invention relates to devices for use in the transmission of photographs by radio, and for other purposes, and has for its principal object to provide a light source without the objections of other sources.
lVith this and other objects in View the invention consists in the novel details of construction and combination of parts more fully hereinafter disclosed and particularly pointed out in the claims.
Referring to the accompanying drawings forming a part of this specification, in which like symbols refer to like parts in both views- Fig. 1 is a diagrammatic drawing of a usual arrangement, and Fig. 2 the novel arrangement of applicants invention, in both of which A is a filament lamp; B an apertured diaphragm; O a lens; D a light receiving surface, and a the filament of the lamp.
to be effective, say, one-hundredth inch in diameter, this minute opening acts as a pinhole camera forming a large size image of I the filament, on the same picture screen (D) that the lens C does, and with a consequent confusion destructive of acceptable results.
However, by moving the filament over near to or touching the glass wall the pinhole effect is avoided, and a single sharp image on the screen results.
Filling the lamp with hydrogen so distributes the heat of the filament on the adjacent area of glass that the glass does not crack.
It is obvious to those skilled in the art that the light source need not be limited to a filament, nor that the enclosing casing need necessarily be filled with hydrogen under all circumstances.
What I claim, is
1. In a lamp unit, a light source, an en-, closing casing therefor filled with hydrogen, said llght source located in approximate contact with the casing wall.
2. In a lamp unit, a light source, and an enclosing casing, said light source being 10- cated in approximate contact with said casing Wall. In Fig. 1 the filament of the lamp is 10- 3. In a lamp unit, a filament light source, and an enclosing casing, saidfilament being located in approximate-contact with the oasing wall.
4. In a .lamp'unit, a filament light source, and an enclosing casing filled with hydrogen, said filament being located in approximate contact with the casing wall.
In testimony whereof I have affixed my signature.
CHARLES FRANCIS JENKINS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US745212A US1572607A (en) | 1924-10-22 | 1924-10-22 | Offset filament lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US745212A US1572607A (en) | 1924-10-22 | 1924-10-22 | Offset filament lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1572607A true US1572607A (en) | 1926-02-09 |
Family
ID=24995713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US745212A Expired - Lifetime US1572607A (en) | 1924-10-22 | 1924-10-22 | Offset filament lamp |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1572607A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2920222A (en) * | 1957-08-13 | 1960-01-05 | Duro Test Corp | Electric lamp |
-
1924
- 1924-10-22 US US745212A patent/US1572607A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2920222A (en) * | 1957-08-13 | 1960-01-05 | Duro Test Corp | Electric lamp |
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