GB382931A - Improvements in and relating to cut-outs for incandescent electric lamps - Google Patents
Improvements in and relating to cut-outs for incandescent electric lampsInfo
- Publication number
- GB382931A GB382931A GB20818/32A GB2081832A GB382931A GB 382931 A GB382931 A GB 382931A GB 20818/32 A GB20818/32 A GB 20818/32A GB 2081832 A GB2081832 A GB 2081832A GB 382931 A GB382931 A GB 382931A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cut
- paste
- insulating material
- powdered
- july
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/62—One or more circuit elements structurally associated with the lamp
- H01K1/70—One or more circuit elements structurally associated with the lamp with built-in short-circuiting device, e.g. for serially connected lamps
Landscapes
- Resistance Heating (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
382,931. Cut-out arrangements for electric incandescent lamps. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Severin, C. ; 914, Helmsdale Avenue, Cleveland Heights, and Peters, L. R. ; 1132, Ansel Road, Cleveland, both in Ohio, U.S.A.) July 23, 1932, No. 20818. Convention date, July 23, 1931. [Class 39 (ii).] A cut-out for electric incandescent lamps adapted for series connection comprises a mass of paste 16, Figs. 1 and 3, adjacent to a bead 15 of insulating material supported by the leading-in wires 13, 14 within the bulb 10, the paste being of such resistance that normally it is nonconductive but becomes conductive upon the failure of the filament 12 and the consequent increase of voltage across the lamp terminals. The material of the cut-out consists preferably of a mixture of a metal powder, a finely powdered insulating material and a binder made up into a paste, the powdered insulating material preferably being non- hygroscopic. In the example the paste is made up of fine iron powder which has been reduced in hydrogen, together with powdered cryolite and a binder consisting of sodium silicate. The insulating bead 15 may be made of glass and provided with a depression 17 into which the pasty mass 16 enters.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US552724A US1992844A (en) | 1931-07-23 | 1931-07-23 | Cut-out for electric lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB382931A true GB382931A (en) | 1932-11-03 |
Family
ID=24206532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20818/32A Expired GB382931A (en) | 1931-07-23 | 1932-07-23 | Improvements in and relating to cut-outs for incandescent electric lamps |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1992844A (en) |
| DE (1) | DE580226C (en) |
| FR (1) | FR738529A (en) |
| GB (1) | GB382931A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL96221C (en) * | 1953-07-03 | |||
| DE1270686B (en) * | 1965-03-15 | 1968-06-20 | Patra Patent Treuhand | Electric incandescent lamp for series connection with a resistor body bridging the power supply wires |
| US4340841A (en) * | 1980-05-22 | 1982-07-20 | General Electric Company | Internal shunt for series connected lamps |
| DE3620373A1 (en) * | 1986-06-18 | 1987-12-23 | Philips Patentverwaltung | ELECTRIC BULB FOR SERIES CIRCUIT AND METHOD FOR THEIR PRODUCTION |
-
1931
- 1931-07-23 US US552724A patent/US1992844A/en not_active Expired - Lifetime
- 1931-12-02 DE DEP64361D patent/DE580226C/en not_active Expired
-
1932
- 1932-06-11 FR FR738529D patent/FR738529A/en not_active Expired
- 1932-07-23 GB GB20818/32A patent/GB382931A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1992844A (en) | 1935-02-26 |
| DE580226C (en) | 1933-07-07 |
| FR738529A (en) | 1932-12-27 |
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