US1253147A - Electric-light switch. - Google Patents
Electric-light switch. Download PDFInfo
- Publication number
- US1253147A US1253147A US83234214A US1914832342A US1253147A US 1253147 A US1253147 A US 1253147A US 83234214 A US83234214 A US 83234214A US 1914832342 A US1914832342 A US 1914832342A US 1253147 A US1253147 A US 1253147A
- Authority
- US
- United States
- Prior art keywords
- electric
- switch
- light switch
- switches
- disk
- 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 - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/023—Light-emitting indicators
Definitions
- the means hitherto proposed to render electric switches visible in the dark are all connected to the movable parts of the switch and therefore they may quickly deteriorate, while the appliance according to the present invention is situated in the interior of the switch and protected by the lid of the same.
- Fig. 1 is a front view
- Fig. 2 a section on line AB of Fig. 1.
- the switch has a porcelain base -a-, in which is fixed the pivot at the upper end of which by means of the plug -d is fastened the ebonite handle -0, by the aid of which is caused to turn the drum --e carrying the conducting plates which are to come into contact with the other conductin plates carried by the terminals f.
- the base ais applied a disk h formed of a luminous or phosphorescent substance, as for instance radiumized zinc or the like phosphorous substance; thesaid disk is protected by a glass globe 7c which, while it does not prejudice the luminosity of the disk, protects also the switch, and serves particularly to insulate the inner contacts.
- a disk h formed of a luminous or phosphorescent substance, as for instance radiumized zinc or the like phosphorous substance; thesaid disk is protected by a glass globe 7c which, while it does not prejudice the luminosity of the disk, protects also the switch, and serves particularly to insulate the inner contacts.
- the disk h may make use of a layer of phosphorescent varnish, or of a ring filled with luminous powder, having care that the outer face of said ring be transparent, or of any other suitable means. It is to be noted that the phosphorescent layer is independent from the movable parts of the switch.
- the luminous substance may be renewed when its luminosity has greatly weakened.
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- Luminescent Compositions (AREA)
Description
G. S. DELLA CERDA. ELECTRIC LIGHT SWITCH.
LED PR.16 1
m Patented Jan. 8,1918.
GIORGIA SANTOSTEFANO DELLA GERDA, OF VIAREGGIO, ITALY.
ELECTRIC-LIGHT SWITCH.
Specification of Letters Patent.
Patented Jan. 8, 1918.
Application filed April 16, 1914. Serial No. 832,342.
' To all whom it may concern Be it known that I, GronorA SAN'rosrn- FANO DELLA CERDA, subject of the King of Italy, residing at No. 79 Via S. Martino, 'Viareggio, Italy, have invented certain new and useful Improvements in Electric-Light Switches, of which the following is a specification, reference being had therein to the accompanying drawing.
In electric light installations, and particularly in house installations, in the circuit is Y commonly inserted a switch, by means of which the lamps are lighted only in case of want, thus avoiding a useless and economically inconvenient waste of electric energ It often happens that the consumers of electric light are aware of the position of the switches, and also in the dark they know quite well where they are; nevertheless it frequently occurs that somebody is ignorant of that position, wherefore it may be convenient to make use of a 'signalizing means enabling to reach the switches also in the dark. This means is provided by the present invention, which consists in the employment of electrical switches provided with phosphorescent and luminous substances.
The means hitherto proposed to render electric switches visible in the dark are all connected to the movable parts of the switch and therefore they may quickly deteriorate, while the appliance according to the present invention is situated in the interior of the switch and protected by the lid of the same.
In the annexed drawing is represented as an example an embodiment of the present invention; this embodiment refers to a novel switch, and is illustrated in Figures 1 and 2,
of which- Fig. 1 is a front view, and Fig. 2 a section on line AB of Fig. 1. \Vith reference to Figs. 1 and 2 the switch has a porcelain base -a-, in which is fixed the pivot at the upper end of which by means of the plug -d is fastened the ebonite handle -0, by the aid of which is caused to turn the drum --e carrying the conducting plates which are to come into contact with the other conductin plates carried by the terminals f. 6n the base ais applied a disk h formed of a luminous or phosphorescent substance, as for instance radiumized zinc or the like phosphorous substance; thesaid disk is protected by a glass globe 7c which, while it does not prejudice the luminosity of the disk, protects also the switch, and serves particularly to insulate the inner contacts.
Instead of the disk h one may make use of a layer of phosphorescent varnish, or of a ring filled with luminous powder, having care that the outer face of said ring be transparent, or of any other suitable means. It is to be noted that the phosphorescent layer is independent from the movable parts of the switch.
The luminous substance may be renewed when its luminosity has greatly weakened.
Having now fully described this my invention, and how the same is to be carried out, I declare that what I claim is:
Copies of on: patent may be obtained for five cents each, by addressing the Commissioner of latenta,
Washington, D. O.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US83234214A US1253147A (en) | 1914-04-16 | 1914-04-16 | Electric-light switch. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US83234214A US1253147A (en) | 1914-04-16 | 1914-04-16 | Electric-light switch. |
Publications (1)
Publication Number | Publication Date |
---|---|
US1253147A true US1253147A (en) | 1918-01-08 |
Family
ID=3320860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US83234214A Expired - Lifetime US1253147A (en) | 1914-04-16 | 1914-04-16 | Electric-light switch. |
Country Status (1)
Country | Link |
---|---|
US (1) | US1253147A (en) |
-
1914
- 1914-04-16 US US83234214A patent/US1253147A/en not_active Expired - Lifetime
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