GB777861A - Improvements in and relating to dial illumination - Google Patents
Improvements in and relating to dial illuminationInfo
- Publication number
- GB777861A GB777861A GB3228154A GB3228154A GB777861A GB 777861 A GB777861 A GB 777861A GB 3228154 A GB3228154 A GB 3228154A GB 3228154 A GB3228154 A GB 3228154A GB 777861 A GB777861 A GB 777861A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dial
- nov
- indicating
- relating
- markings
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/28—Structurally-combined illuminating devices
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Measuring Devices (AREA)
Abstract
777,861. Indicating-apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 10, 1955 [Nov. 8, 1954], No. 32281/54. Class 106 (4). [Also in Group XVIII] The dial of indicating-apparatus comprises a light-conducting plate 1 with scale markings 3 and a light source 5 arranged in a peripheral recess shielded from direct view by an opaque screen 6 and with a reflecting mirror surface 4 round the periphery 4. The markings 3 may be engraved and painted black, a highly diffuse light reflecting surface 7 is arranged behind the dial and the rear face of the dial has an etched annular portion 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3228154A GB777861A (en) | 1954-11-08 | 1954-11-08 | Improvements in and relating to dial illumination |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3228154A GB777861A (en) | 1954-11-08 | 1954-11-08 | Improvements in and relating to dial illumination |
Publications (1)
Publication Number | Publication Date |
---|---|
GB777861A true GB777861A (en) | 1957-06-26 |
Family
ID=10336172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3228154A Expired GB777861A (en) | 1954-11-08 | 1954-11-08 | Improvements in and relating to dial illumination |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB777861A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2235295A (en) * | 1989-08-24 | 1991-02-27 | Technophone Ltd | Light guide for keypads and the like |
-
1954
- 1954-11-08 GB GB3228154A patent/GB777861A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2235295A (en) * | 1989-08-24 | 1991-02-27 | Technophone Ltd | Light guide for keypads and the like |
US5053928A (en) * | 1989-08-24 | 1991-10-01 | Techophone Limited | Light guide |
GB2235295B (en) * | 1989-08-24 | 1993-09-08 | Technophone Ltd | Light guide |
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