GB890213A - Improvements in or relating to a method of winding grids - Google Patents
Improvements in or relating to a method of winding gridsInfo
- Publication number
- GB890213A GB890213A GB1911757A GB1911757A GB890213A GB 890213 A GB890213 A GB 890213A GB 1911757 A GB1911757 A GB 1911757A GB 1911757 A GB1911757 A GB 1911757A GB 890213 A GB890213 A GB 890213A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wire
- frame
- notches
- grid
- apices
- 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
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/0012—Constructional arrangements
- H01J2893/0019—Chemical composition and manufacture
- H01J2893/0022—Manufacture
- H01J2893/0025—Manufacture by winding wire upon a support
Landscapes
- Solid Thermionic Cathode (AREA)
Abstract
890,213. Making grids for electron discharge devices; brazing. ELECTRIC & MUSICAL INDUSTRIES Ltd. June 11, 1958 [June 18, 1957], No. 19117/57. Classes 83 (2) and 83 (4). A method of making a grid includes the steps of winding grid wire on a grid support which is provided with notches each having an inclined side so that during winding the wire engages said inclined sides and passes therealong into the apices of the notches so that the angle at which the wire is disposed relatively to said support is determined by the disposition of said apices, and thereafter joining said wire to said support. A molybdenum frame 1 has a punched or etched series of notches 2, 3 in opposed edges, the apices of the notches 2 being in line with those of the notches 3 so that when the frame is wound with wire in a conventional winding machine the wire slides into the apices and the resultant wound grid has a series of parallel lengths 6 of wire normal to the notched edges of the frame 1 and on the other side of the frame a series of parallel lengths 7 inclined to said edges. The wound wire is then secured to the frame by brazing and if desired, the wire lengths 7 removed. The wire may be of goldplated molybdenum or, after winding, the molybdenum wire and frame may be coated with gold, the assembly being heated in hydrogen or inert gas to cause the gold plating to braze the wire to the frame. The notches may be of V-shape with one edge normal to the edge of the frame. The grid wires 6 may be wound at an angle other than normal to the frame edges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1911757A GB890213A (en) | 1957-06-18 | 1957-06-18 | Improvements in or relating to a method of winding grids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1911757A GB890213A (en) | 1957-06-18 | 1957-06-18 | Improvements in or relating to a method of winding grids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB890213A true GB890213A (en) | 1962-02-28 |
Family
ID=10124040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1911757A Expired GB890213A (en) | 1957-06-18 | 1957-06-18 | Improvements in or relating to a method of winding grids |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB890213A (en) |
-
1957
- 1957-06-18 GB GB1911757A patent/GB890213A/en not_active Expired
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