GB176309A - Improvements in or relating to the renewal of electric incandescent lamps - Google Patents
Improvements in or relating to the renewal of electric incandescent lampsInfo
- Publication number
- GB176309A GB176309A GB19723/21A GB1972321A GB176309A GB 176309 A GB176309 A GB 176309A GB 19723/21 A GB19723/21 A GB 19723/21A GB 1972321 A GB1972321 A GB 1972321A GB 176309 A GB176309 A GB 176309A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wires
- filament
- filaments
- leading
- new
- 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
- H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
- H01K3/30—Repairing or regenerating used or defective lamps
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
176,309. Calderara, M. March 3, 1921, [Convention date]. Repairing; filaments, supports for; leading- in wires.-In renewing filaments a small hole is made in the bulb at the tip 2, the old filament is removed and the end of the glass stem broken off, and a new complementary stem part 6 with the new filament 8 attached is passed through the hole 2, this being facilitated by forming loops 13 in the radial supporting-wires 9, Fig. 2, which enable the wire support to fold umbrellawise. The bulb may be made originally with its stem in two parts, one of which is removable to facilitate renewal of the filament. New leading-wires 10 have their ends 11 coiled and threaded on to the permanent leading-in wires 5, to which they are secured by soldering, welding, or compressing the coils. The last operation may be effected by drawing out the coils longitudinally. Circular filaments may be replaced by zig-zag filaments. According to the Specification as open to inspection under Sect. 91 (3) (a), the filament and its supporting-wires may be formed as shown in Fig. 4 (Cancelled), and passed through the hole 2 by a helical movement. This subjectmatter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT176309X | 1921-03-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB176309A true GB176309A (en) | 1922-09-21 |
Family
ID=11150517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19723/21A Expired GB176309A (en) | 1921-03-03 | 1921-07-22 | Improvements in or relating to the renewal of electric incandescent lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB176309A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4812469A (en) * | 1987-02-27 | 1989-03-14 | Adir Et Cie | Acetamides derived from 2,3-dihydro-3-phenyl-2-benzofuranone |
| US4886799A (en) * | 1987-09-11 | 1989-12-12 | Adir Et Cie | Acetamides derived from 2,3-dihydro-3-phenyl-2-benzofuranone |
-
1921
- 1921-07-22 GB GB19723/21A patent/GB176309A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4812469A (en) * | 1987-02-27 | 1989-03-14 | Adir Et Cie | Acetamides derived from 2,3-dihydro-3-phenyl-2-benzofuranone |
| US4886799A (en) * | 1987-09-11 | 1989-12-12 | Adir Et Cie | Acetamides derived from 2,3-dihydro-3-phenyl-2-benzofuranone |
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