GB458736A - Improvements in or relating to metal mesh screens for example for use in cathode ray tubes - Google Patents
Improvements in or relating to metal mesh screens for example for use in cathode ray tubesInfo
- Publication number
- GB458736A GB458736A GB1716436A GB1716436A GB458736A GB 458736 A GB458736 A GB 458736A GB 1716436 A GB1716436 A GB 1716436A GB 1716436 A GB1716436 A GB 1716436A GB 458736 A GB458736 A GB 458736A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- matrix
- ribs
- gold
- layer
- 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
- 239000002184 metal Substances 0.000 title abstract 3
- 229910052751 metal Inorganic materials 0.000 title abstract 3
- 239000011159 matrix material Substances 0.000 abstract 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 4
- 239000011521 glass Substances 0.000 abstract 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 3
- 229910052737 gold Inorganic materials 0.000 abstract 3
- 239000010931 gold Substances 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 2
- 239000010426 asphalt Substances 0.000 abstract 2
- 229910052802 copper Inorganic materials 0.000 abstract 2
- 239000010949 copper Substances 0.000 abstract 2
- 229910052759 nickel Inorganic materials 0.000 abstract 2
- 239000004160 Ammonium persulphate Substances 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 abstract 1
- 235000019395 ammonium persulphate Nutrition 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 238000004070 electrodeposition Methods 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 238000003892 spreading Methods 0.000 abstract 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- 239000002966 varnish Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
- C25D1/08—Perforated or foraminous objects, e.g. sieves
-
- 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
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Electroplating Methods And Accessories (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
458,736. Making mesh screens; electrodeposition. HOLMAN, H. E., 4, Fairway Avenue, Garden City, Yiewsley, Middlesex. May 23, 1935, No. 17164/36. Divided out of 458,675, [Group IX]. [Class 83 (ii)] [See also Groups XXXVI and XL] A metal mesh screen for use in an electron discharge device is formed by a process including the steps of forming an electrically-conducting matrix 30 having ribs 30a corresponding to the finished screen, applying a layer 31 of an insulating material such as an asphalt varnish, removing the layer 31 until the tops of the ribs appear, and then lapping until the exposed copper surface corresponds to the desired form of the screen, depositing a gold or other metal layer on the tops 30a of the ribs and then removing the remainder of the insulating medium and the matrix 30 to leave a screen 32, a supporting member being attached to the screen before complete removal of the matrix. The deposit may be applied to two plates placed back-to-back and soldered at their edges. An asphalt coating is removed by boiling in ether. A screen may be secured to a nickel frame by methods described in Specification 458,675. Alternatively, a screen 32, Fig. 13, is secured to a mosaic screen for cathode-ray tubes such as used in the electrical transmission of pictures and comprising crossed wires 35b each insulated by a glass tube 36 and having gold cups 38 in the interstices, the screen 32 acting as a potential stabilizer and preventing the spreading of secondary electrons. In the production of the composite screen, the matrix 30 and deposited screen 32, have a film of nickel deposited thereon and then a thick deposit of silver 34, the copper matrix being removed by dissolving in acid, electrolytically, or by ammonium persulphate as described in Specification 458,675. The matrix so formed is employed with a matrix 37 in a process similar to that described in Specifications 447,824, [Group XL], and 455,233 whereby the crossed insulated wires 35b are subjected to heat and pressure, causing adhesion of the glass tubes 36 at the junctions and applying the gold cups 38 to the interstices. The screen 32 is also caused to adhere to the glass tubes 36, after which the layers 37, 33, 34 are removed by acid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB15103/35A GB458675A (en) | 1935-05-23 | 1935-05-23 | Improvements in or relating to metal mesh screens for example for use in cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB458736A true GB458736A (en) | 1936-12-23 |
Family
ID=10053091
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15103/35A Expired GB458675A (en) | 1935-05-23 | 1935-05-23 | Improvements in or relating to metal mesh screens for example for use in cathode ray tubes |
| GB1716436A Expired GB458736A (en) | 1935-05-23 | 1935-05-23 | Improvements in or relating to metal mesh screens for example for use in cathode ray tubes |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15103/35A Expired GB458675A (en) | 1935-05-23 | 1935-05-23 | Improvements in or relating to metal mesh screens for example for use in cathode ray tubes |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE880678C (en) |
| FR (1) | FR805667A (en) |
| GB (2) | GB458675A (en) |
| NL (1) | NL46342C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1184702B (en) * | 1957-01-14 | 1964-12-31 | Flueckiger & Cie | Process for the production of dials, in particular watch dials |
| DE1182690B (en) * | 1961-05-19 | 1964-12-03 | Siemens Ag | Use of an electroforming process for the production of profile grids for color control in color picture tubes |
| US3476658A (en) * | 1965-11-16 | 1969-11-04 | United Aircraft Corp | Method of making microcircuit pattern masks |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE619465C (en) * | 1933-05-10 | 1935-10-01 | Telefunken Gmbh | Process for the production of perforated electrodes for electrical discharge vessels |
-
0
- NL NL46342D patent/NL46342C/xx active
-
1935
- 1935-05-23 GB GB15103/35A patent/GB458675A/en not_active Expired
- 1935-05-23 GB GB1716436A patent/GB458736A/en not_active Expired
-
1936
- 1936-04-14 FR FR805667D patent/FR805667A/en not_active Expired
- 1936-05-24 DE DEE2305D patent/DE880678C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL46342C (en) | |
| GB458675A (en) | 1936-12-23 |
| DE880678C (en) | 1953-06-22 |
| FR805667A (en) | 1936-11-26 |
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