GB280515A - Improved manufacture of electric incandescent lamps - Google Patents
Improved manufacture of electric incandescent lampsInfo
- Publication number
- GB280515A GB280515A GB2768927A GB2768927A GB280515A GB 280515 A GB280515 A GB 280515A GB 2768927 A GB2768927 A GB 2768927A GB 2768927 A GB2768927 A GB 2768927A GB 280515 A GB280515 A GB 280515A
- Authority
- GB
- United Kingdom
- Prior art keywords
- exhaust tube
- incandescent lamps
- electric incandescent
- improved manufacture
- sleeve
- 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
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/32—Sealing leading-in conductors
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
280,515. Gral Ges. fur Elektro- Industrie. Nov. 9, 1926, [Convention date]. Addition to 261,398. Making lamps. - In making stems by pinching a stem tube a and an exhaust tube c, between which leading-in conductors d', d<2> are located, about a removable mandrel 2 whereby an aperture is formed through the pinch to connect the exhaust tube with the interior of the bulb, a sleeve g is interposed between the wall of the exhaust tube and the mandrel to facilitate the removal of the latter. The sleeve may be of metal so thin that it does not impart temperature strains to the adjacent glass.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT109019T | 1926-11-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB280515A true GB280515A (en) | 1928-06-28 |
Family
ID=28795531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2768927A Expired GB280515A (en) | 1926-11-09 | 1927-10-18 | Improved manufacture of electric incandescent lamps |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE466532C (en) |
GB (1) | GB280515A (en) |
NL (1) | NL21723C (en) |
-
0
- NL NL21723D patent/NL21723C/xx active
-
1927
- 1927-08-20 DE DEG71047D patent/DE466532C/en not_active Expired
- 1927-10-18 GB GB2768927A patent/GB280515A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL21723C (en) | |
DE466532C (en) | 1928-10-08 |
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