GB891629A - Indicator lights - Google Patents
Indicator lightsInfo
- Publication number
- GB891629A GB891629A GB1857759A GB1857759A GB891629A GB 891629 A GB891629 A GB 891629A GB 1857759 A GB1857759 A GB 1857759A GB 1857759 A GB1857759 A GB 1857759A GB 891629 A GB891629 A GB 891629A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- recess
- switch
- mercury
- battery
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0414—Arrangement of electric circuit elements in or on lighting devices the elements being switches specially adapted to be used with portable lighting devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L4/00—Electric lighting devices with self-contained electric batteries or cells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L4/00—Electric lighting devices with self-contained electric batteries or cells
- F21L4/08—Electric lighting devices with self-contained electric batteries or cells characterised by means for in situ recharging of the batteries or cells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
- F21W2111/10—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for personal use, e.g. hand-held
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Audible And Visible Signals (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
891,629. Inertia switches; mercury switches. JUHASZ, L. Aug. 5, 1960 [June 1, 1959], No. 18577/59. Class 38 (5). [Also in Groups XI and XVIII] An electric indicator lamp adapted to be secured to the person comprises a casing enclosing a battery, an electric light bulb mounted in the casing, a switch for connecting the bulb to the battery which is unaffected by the position of the casing but can be operated by a sharp shock and means for securing the casing to the person. The bulb is threaded into a disc at the base of a recess 10 in the casing and the centre contact 14 of the bulb contacts one surface of a rechargeable nickel-cadmium battery accommodated in the recess. A spring 25 extending round part of the recess engages the periphery of the battery and terminates at one end in a kinked part 25a. Outside the recess is a circular wall 9 forming a channel 8 housing a springy connector 30, one end of which terminates adjacent the part 25a and the other engages one pole of a mercury switch 32, the other pole of which is connected to a strip 33 engaging an extension on the disc. An operating lever 40 in one position presses the end of the connector 30 into contact with the part 25a whereby the circuit of the lamp can be closed by the mercury switch which comprises a bead of mercury enclosed in a narrow tube so that the position of the bead is not altered altered by change of position of the casing but only by a sharp jerk. The mercury switch may be replaced by a switch having a spring-biased moving element stable in two extreme positions. Alternatively, a magnetic bias may be used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1857759A GB891629A (en) | 1959-06-11 | 1959-06-11 | Indicator lights |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1857759A GB891629A (en) | 1959-06-11 | 1959-06-11 | Indicator lights |
Publications (1)
Publication Number | Publication Date |
---|---|
GB891629A true GB891629A (en) | 1962-03-14 |
Family
ID=10114844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1857759A Expired GB891629A (en) | 1959-06-11 | 1959-06-11 | Indicator lights |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB891629A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2255402A (en) * | 1991-05-02 | 1992-11-04 | Mark Steven Casey | Hand light |
US5193896A (en) * | 1992-01-13 | 1993-03-16 | Seymour Oberlander | Lighting device for personal use |
-
1959
- 1959-06-11 GB GB1857759A patent/GB891629A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2255402A (en) * | 1991-05-02 | 1992-11-04 | Mark Steven Casey | Hand light |
US5193896A (en) * | 1992-01-13 | 1993-03-16 | Seymour Oberlander | Lighting device for personal use |
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