GB497806A - Improvements in dies, more especially for punching fine holes - Google Patents
Improvements in dies, more especially for punching fine holesInfo
- Publication number
- GB497806A GB497806A GB2162937A GB2162937A GB497806A GB 497806 A GB497806 A GB 497806A GB 2162937 A GB2162937 A GB 2162937A GB 2162937 A GB2162937 A GB 2162937A GB 497806 A GB497806 A GB 497806A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dies
- mass
- die
- holes
- fine channel
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
- H04N3/04—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving aperture also apertures covered by lenses
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
497,806. Dies ; perforating vitreous material. GENERAL ELECTRIC CO., Ltd., and WALTER, D. O. Aug. 5, 1937, No. 21629. [Class 56] [Also in Group XXII] A die, for use in forming holes in a thin sheet, is made by heating a capillary tube 1 of vitreous material until its walls collapse at one point into a continuous mass 3, and the bore 2 tapers to a fine channel 6 that ends in the mass 3, and then grinding or lapping away the mass 3 to produce a smooth surface in the plane 7 in which the fine channel 6 is exposed. Silica is a suitable material for the tube 1, but glass may be used. A punch for co-operating with the die is preferably made by the process described in Specification 492,556, [Group XXII]. The device is especially suitable for forming scanning-holes in a Nipkow disc for transmitting television. According to the Provisional Specification the dies may be used for wire drawing and for squirting viscous solutions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2162937A GB497806A (en) | 1937-08-05 | 1937-08-05 | Improvements in dies, more especially for punching fine holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2162937A GB497806A (en) | 1937-08-05 | 1937-08-05 | Improvements in dies, more especially for punching fine holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB497806A true GB497806A (en) | 1938-12-29 |
Family
ID=10166140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2162937A Expired GB497806A (en) | 1937-08-05 | 1937-08-05 | Improvements in dies, more especially for punching fine holes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB497806A (en) |
-
1937
- 1937-08-05 GB GB2162937A patent/GB497806A/en not_active Expired
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