GB774735A - Improvements in or relating to clocks - Google Patents
Improvements in or relating to clocksInfo
- Publication number
- GB774735A GB774735A GB447955A GB447955A GB774735A GB 774735 A GB774735 A GB 774735A GB 447955 A GB447955 A GB 447955A GB 447955 A GB447955 A GB 447955A GB 774735 A GB774735 A GB 774735A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- clock
- switching means
- alarm
- feb
- 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
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C21/00—Producing acoustic time signals by electrical means
- G04C21/02—Constructional details
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B19/00—Indicating the time by visual means
- G04B19/30—Illumination of dials or hands
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
Abstract
774,735. Clocks. SMITH & SONS (ENGLAND), Ltd., S. Feb. 15, 1956 [Feb. 15, 1955], No. 4479/55. Class 139. An alarm clock is provided with a tell-tale lamp 9, Fig. 1, the illumination of which is controlled by switching means to indicate whether or not the alarm has been set. As applied to an electric alarm clock the switch means comprises a fixed contact member 16, 17, Fig. 2, and a movable contact member 21, 22 controlled by the alarm setting plunger 7. A dropping resistor 14 is connected to the neon bulb which may be in series or in parallel with the switching means so that closure of the switching means by the plunger 7 either effects lighting or extinguishing of the lamp 9. The light from the lamp is transmitted from the clock casing by light transmitting element 12, 13 or through an opening in the clock face or through a glass ring surrounding the dial.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB447955A GB774735A (en) | 1955-02-15 | 1955-02-15 | Improvements in or relating to clocks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB447955A GB774735A (en) | 1955-02-15 | 1955-02-15 | Improvements in or relating to clocks |
Publications (1)
Publication Number | Publication Date |
---|---|
GB774735A true GB774735A (en) | 1957-05-15 |
Family
ID=9777953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB447955A Expired GB774735A (en) | 1955-02-15 | 1955-02-15 | Improvements in or relating to clocks |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB774735A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3195300A (en) * | 1962-02-14 | 1965-07-20 | Gen Electric | Alarm set indicating means |
US3282041A (en) * | 1962-02-14 | 1966-11-01 | Gen Electric | Alarm set indicating means |
US3292360A (en) * | 1961-08-07 | 1966-12-20 | Sunbeam Corp | Alarm set indicator |
DE1238855B (en) * | 1964-03-06 | 1967-04-13 | Gen Electric | Alarm clock |
US3509711A (en) * | 1967-04-05 | 1970-05-05 | Ingraham & Co | Alarm condition indicator |
-
1955
- 1955-02-15 GB GB447955A patent/GB774735A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3292360A (en) * | 1961-08-07 | 1966-12-20 | Sunbeam Corp | Alarm set indicator |
US3195300A (en) * | 1962-02-14 | 1965-07-20 | Gen Electric | Alarm set indicating means |
US3282041A (en) * | 1962-02-14 | 1966-11-01 | Gen Electric | Alarm set indicating means |
DE1238855B (en) * | 1964-03-06 | 1967-04-13 | Gen Electric | Alarm clock |
US3509711A (en) * | 1967-04-05 | 1970-05-05 | Ingraham & Co | Alarm condition indicator |
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