GB339891A - Improvements in and relating to x-ray tubes - Google Patents
Improvements in and relating to x-ray tubesInfo
- Publication number
- GB339891A GB339891A GB6390/30A GB639030A GB339891A GB 339891 A GB339891 A GB 339891A GB 6390/30 A GB6390/30 A GB 6390/30A GB 639030 A GB639030 A GB 639030A GB 339891 A GB339891 A GB 339891A
- Authority
- GB
- United Kingdom
- Prior art keywords
- copper
- aluminium
- backing
- current
- per cent
- 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
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/08—Anodes; Anti cathodes
- H01J35/112—Non-rotating anodes
Abstract
339,891. British Thomson-Houston Co., Ltd., (Assignees of Kearsley, W. K.) Feb. 27, 1929, [Convention date]. Drawings to Specification. R÷ntgen-ray tubes.-Alloys of copper and aluminium, preferably containing 0.25 to 2 per cent of aluminium, are used instead of copper as the backing of anticathodes. The decrease in the space current, and so in the ray output, occurring with copper backings during the course of an exposure, possibly due to the poisoning of the cathode by gases evolved from the anticathode, is thus prevented or a rising current may be produced. An alloy containing 1 per cent of aluminium gives substantially steady current for 2 minutes. The backing has a tungsten inset cast or peened therein and is made slightly larger than corresponding copper backings to allow for its decreased heat and electrical conductivity.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US339891XA | 1929-02-27 | 1929-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB339891A true GB339891A (en) | 1930-12-18 |
Family
ID=21873632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6390/30A Expired GB339891A (en) | 1929-02-27 | 1930-02-26 | Improvements in and relating to x-ray tubes |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE532800C (en) |
| FR (1) | FR38029E (en) |
| GB (1) | GB339891A (en) |
| NL (1) | NL26736C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE893234C (en) * | 1938-05-28 | 1953-10-15 | Telefunken Gmbh | Metallic components used inside high-vacuum electrical discharge vessels |
| US9960088B2 (en) * | 2011-11-07 | 2018-05-01 | Taiwan Semiconductor Manufacturing Company, Ltd. | End point detection in grinding |
-
0
- NL NL26736D patent/NL26736C/xx active
-
1930
- 1930-02-11 DE DE1930532800D patent/DE532800C/en not_active Expired
- 1930-02-26 GB GB6390/30A patent/GB339891A/en not_active Expired
- 1930-02-26 FR FR38029D patent/FR38029E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL26736C (en) | |
| DE532800C (en) | 1931-09-04 |
| FR38029E (en) | 1931-03-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB364706A (en) | Improvements in and relating to x-ray apparatus | |
| US2282098A (en) | Carbon electrode | |
| GB339891A (en) | Improvements in and relating to x-ray tubes | |
| GB344692A (en) | Improvements in or relating to x-ray tubes | |
| GB346957A (en) | Improvements in and relating to electron discharge devices | |
| GB432154A (en) | Improvements in and relating to x-ray tubes | |
| GB524882A (en) | Improvements in or relating to the production of aluminium beryllium alloys | |
| GB393849A (en) | Improvements in luminous electric discharge tubes | |
| GB313010A (en) | Improvements in and relating to incandescent electric lamps | |
| GB493534A (en) | Improvements in and relating to electric discharge devices | |
| GB383858A (en) | Improvements in and relating to electric discharge apparatus | |
| GB317402A (en) | ||
| GB412879A (en) | Improvements in electric discharge tubes | |
| GB526731A (en) | Improvements in secondary emissive electrodes | |
| GB356689A (en) | Improvements in and relating to electrical discharge devices | |
| GB318190A (en) | Improvements in spark plug electrode | |
| US1816734A (en) | Electrode for electric batteries, electrolytic cells, and the like | |
| GB543201A (en) | A new or improved method of producing high secondary electron emission from electrical conductors | |
| GB280236A (en) | Improvements in or relating to incandescent cathodes | |
| GB505438A (en) | Improvements in plates of lead accumulators | |
| GB417643A (en) | Improvements in anodic incandescent lamps | |
| DE572563C (en) | Gas-filled electric light bulb | |
| GB432484A (en) | Improvements relating to electrodes for sparking plugs and other electrical contacts | |
| GB397132A (en) | Improvements in oxide coated thermionic cathodes | |
| GB306034A (en) | Arrangement for increasing the resistance to through sparking of discharge tubes |