US838304A - Lightning-arrester. - Google Patents
Lightning-arrester. Download PDFInfo
- Publication number
- US838304A US838304A US31602806A US1906316028A US838304A US 838304 A US838304 A US 838304A US 31602806 A US31602806 A US 31602806A US 1906316028 A US1906316028 A US 1906316028A US 838304 A US838304 A US 838304A
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- US
- United States
- Prior art keywords
- arrester
- dielectric
- lightning
- blocks
- carbon
- 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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/02—Details
- H05B41/04—Starting switches
- H05B41/06—Starting switches thermal only
- H05B41/08—Starting switches thermal only heated by glow discharge
Definitions
- the mica holds the car ons apart during the continuance of anarcthrough the arrester, and .thereby allows -the carbons to becomered-hot and .the arc to continue until the carbon surfaces are actually burned together.
- the mica dielectric provided with the usual holes therein provides a construction which holds carbon dustfor particles of carbon between the blocks, and thereby forms a shortecircuit throu h the arrester'when it is not desired.
- I preferably em ploy the usual carbon blocks for the electrodes of thearrester; but instead of the mica dielectric I employ a dielectric of a material which will become softened under -a continuedarc through the arrester, and thereby allow the carbon'blocks to be pressed together and short-circuited, thusstoppin the arc,
- a dielectric is very desirab em certain cases, especially in telephonesys tgrns exposed to electric light or street-car currents of reasonably high voltages.
- Figure 1 is a perspective view of the li htningarrester of the invention
- Fig. 2 1s a side elevation of the dielectric of the invention.
- the dielectric 2 is placed between the car- 'bon blocks 1 1, as shown in Fig. 1.
- One side portion of the dielectric 2 is cutaway, preferably as shown at 3..
- This cut-away por-' tion fi allows the particles of carbon to fall from between the blocks 1 1 when the arrester shown in Fig. 1 is placed in a horizontal position.
- the arrester shown in Fig. 1 is placed in a horizontal position.
- the eat of the arc softens or me ts the celluloid dielectric 2, and thereby allows same to ooze out from between the blocks 1 1 due to the ordinary spring-pressure on the blocks 1 1, and the latter to make electrical connection with each other and estab- [ish a short-circuit therebetween, which stops the continuance of. the are.
- the arc is of short duration, it will simply pass from one block to the other through the cutaway' portion 3 of the dielectric without melting or softening the latter.
- the lightning-arrester the circuit in any well-known manner.
- Ivpreferen an shown in Fig. 1 may be held in place in 3.
- suitable electrodes held adjacent to each other, and a 'U-shaped celluloid dielectric inter osed between the electrodes.
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Description
N0- 838,304. PATENTED DEC. 11, 1906.
F. B. COOK. 1
LIGHTNING ARRESTER. APPLICATION FILED MAY 9, 1906.
UNITED STATES PATENT "oFFroE. FRANK B.- COK, OFCHIOAGO, ILLINOIS. LJG HTNING AFIRE STER.
Patented. Dec. 11, 1906.
Application filed May 9, 1906- vSerial Ho. 316'028- Y The principal objects of myinvention are to rovide a self-cleaning lightning-arrester an a lightning-arrester which will automatically short-circuit itself upon the continuance of an arc therethrough..
- In the lightning-arresters generally in usecomprising the usual carbon blocks and inter osed mica dielectric the mica holds the car ons apart during the continuance of anarcthrough the arrester, and .thereby allows -the carbons to becomered-hot and .the arc to continue until the carbon surfaces are actually burned together. Then, again, the mica dielectric provided with the usual holes therein provides a construction which holds carbon dustfor particles of carbon between the blocks, and thereby forms a shortecircuit throu h the arrester'when it is not desired.
Wit such an arrester the carbons have to be taken apartand cleaned after each ordinary discharge through' the arresten- In my present invention I preferably em ploy the usual carbon blocks for the electrodes of thearrester; but instead of the mica dielectric I employ a dielectric of a material which will become softened under -a continuedarc through the arrester, and thereby allow the carbon'blocks to be pressed together and short-circuited, thusstoppin the arc, Such a dielectric is very desirab em certain cases, especially in telephonesys tgrns exposed to electric light or street-car currents of reasonably high voltages. Then I cut away one side portion of the dielectric to near the center thereof, so as to allow the Per ticles of carbon which may be broken oii during a discharge through the arrester to fall from between the carbons, and thereby keep the air-space between the blocks free from obstructions and the lightning-arrester free from ably use a thin sheet of celluloid.
ashort-circuit after a discharge has passed therethrough.
Referring to the accompanying drawings,
Figure 1 is a perspective view of the li htningarrester of the invention, and Fig. 2 1s a side elevation of the dielectric of the invention.
The dielectric 2 is placed between the car- 'bon blocks 1 1, as shown in Fig. 1. One side portion of the dielectric 2 is cutaway, preferably as shown at 3.. This cut-away por-' tion fi allows the particles of carbon to fall from between the blocks 1 1 when the arrester shown in Fig. 1 is placed in a horizontal position. For this dielectric 2 are continues throu h the arrester for a short len th of time, the eat of the arc softens or me ts the celluloid dielectric 2, and thereby allows same to ooze out from between the blocks 1 1 due to the ordinary spring-pressure on the blocks 1 1, and the latter to make electrical connection with each other and estab- [ish a short-circuit therebetween, which stops the continuance of. the are. If the arc is of short duration, it will simply pass from one block to the other through the cutaway' portion 3 of the dielectric without melting or softening the latter. The lightning-arrester the circuit in any well-known manner.
Having thus described my invention, what I claim as new, and desire to secure byLetters Patent, is I 1. In a lightning-arrester of the character described, suitable electrodes held adjacent to each other,and a thin dielectric of softenable material interposed between the elec trodes and having one side ortion thereof cut away ap roximately to t e center.
2. In a hg tning-arrester of the character described, suitable electrodes held adjacent to each other, and a celluloid dielectric interposed between the electrodes and having a side portion thereof cut away approximately to the center.
Ivpreferen an shown in Fig. 1 may be held in place in 3. In a lightning-arrester of the character described, suitable electrodes held adjacent to each other, and a 'U-shaped celluloid dielectric inter osed between the electrodes.
4. In a lig tiling-arrester of the character described, suitable electrodes held adjacent to each other, and a U-shaped dielectric of softe'zmhle Irma-1'11 interposed between the As inventor of the foregoing I hereunto electrodes. subscribe my name, in the presence of two 10 In a Hg]!tUiIIQ-fliiiOStGl of the character subscribing Witnesses, this 7th day of May, described, rectangulm? carbon blocks suitably 1906 held in. a lmrizentel position and. adjacent to FRANK "B. COOK. each ether, and a ti-shaped (helectnc of heat- VV1tnesses: suscephhle nmte'z'ml interposed between the FREDERICK R. PARKER,
carbon blocks F. W. PARDEE.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US31602806A US838304A (en) | 1906-05-09 | 1906-05-09 | Lightning-arrester. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US31602806A US838304A (en) | 1906-05-09 | 1906-05-09 | Lightning-arrester. |
Publications (1)
Publication Number | Publication Date |
---|---|
US838304A true US838304A (en) | 1906-12-11 |
Family
ID=2906778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US31602806A Expired - Lifetime US838304A (en) | 1906-05-09 | 1906-05-09 | Lightning-arrester. |
Country Status (1)
Country | Link |
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US (1) | US838304A (en) |
-
1906
- 1906-05-09 US US31602806A patent/US838304A/en not_active Expired - Lifetime
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