US352647A - Automatic electric liquid-level indicator - Google Patents
Automatic electric liquid-level indicator Download PDFInfo
- Publication number
- US352647A US352647A US352647DA US352647A US 352647 A US352647 A US 352647A US 352647D A US352647D A US 352647DA US 352647 A US352647 A US 352647A
- Authority
- US
- United States
- Prior art keywords
- selenium
- liquid
- level indicator
- automatic electric
- electric liquid
- 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
Links
- 239000007788 liquid Substances 0.000 title description 10
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 13
- 229910052711 selenium Inorganic materials 0.000 description 13
- 239000011669 selenium Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000007799 cork Substances 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
- G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
Definitions
- IO My invention relates to indicatorsor alarms for low water in tanks-such as reservoirs,
- the object is to provide a device operating entirely by means located without the vessel containing the water, and yet being of. such a nature asto beindependent of jars vibrations, or shocks communicated to the vessel.
- the liquid-level indicator consists of the 0 combination of a source of,.lightsuch, for
- a lamp'A a shield or screen, B, in whose opening is a condensing-1ens, C, a containing-tube, l), of glass, which may be considered as having liquid or pipe connect-ions E with a boiler or tank, F, a .float, G, made of opaque material-such as sheet metalor of a'cork or piece of wood, said floatbeing within the tube, and a piece; ofselenium, H-,
- a funnel or ray-collector, L is provided op-" 5 posite the.” lens 0. .-In the normal condition the water J in the tube is of such a depth that the float cuts off the rays K of light from falling upon the selenium, sothat thecircuit remains practically ofuniform resistance; but
- an electric circuit including a translating devicefsuch as anelectric signal, said source of light, lens, float, and selenium lying nor mally in an approximately straightline.
- a translating devicef such as anelectric signal, said source of light, lens, float, and selenium lying nor mally in an approximately straightline.
- an automatic liquid-level indicator the combination of a source of light, a liquid translucent containing-vessel, an opaque float therein, and a piece of selenium forming'part device, such as an electric signal,'-'s'aid'float being normally between said source of light and said selenium;
Description
(No Model.)
J.J.GHEGAN.
AUTOMATIC ELECTRIC LIQUID LEVEL INDIGATOR.
No. 352,647. Patented Nov. 16,1886.
INVENTO R: John JG/zeywa ATTEST:
wail 077W STATES PATENT OFFicE.
JoHuJ. "GHEGAN, or NEWARK, New JERSEY.
AUTOMATIC E LE CTRlC LIQUID-LEVEL mole/iron.
, srscrrrcA'r-r'on forniingpartoi' Letters Patent 'No. 352,647 dated November 1c. 1886.
Application tiled May 29, 1886.
IO My invention relates to indicatorsor alarms for low water in tanks-such as reservoirs,
' boilers, and similar containing-vessels,
The object is to provide a device operating entirely by means located without the vessel containing the water, and yet being of. such a nature asto beindependent of jars vibrations, or shocks communicated to the vessel.
It consists in the application of a piece of selenium to liquid-level indicators or alarms,
so that when the water becomes low rays of light will fall upon the selenium, which by electrical means causes a signal to be given. In order to illustrate the practical manner of. carrying out the invention, and to enable others to construct and use the same, a drawing is hereunto annexed and described, in which similar characters of reference represent corresponding elements.
The liquid-level indicator consists of the 0 combination of a source of,.lightsuch, for
instance, as a lamp'A, a shield or screen, B, in whose opening is a condensing-1ens, C, a containing-tube, l), of glass, which may be considered as having liquid or pipe connect-ions E with a boiler or tank, F, a .float, G, made of opaque material-such as sheet metalor of a'cork or piece of wood, said floatbeing within the tube, and a piece; ofselenium, H-,
upon the opposite side of the tube .fromthe- 0 lamp, and in thesame horizontal line with the flame -ofthe lamp, the'selenium beingin an electric circuit of, constant and preadjusted qresistance, andincluding an electric bell, I.
A funnel or ray-collector, L, is provided op-" 5 posite the." lens 0. .-In the normal condition the water J in the tube is of such a depth that the float cuts off the rays K of light from falling upon the selenium, sothat thecircuit remains practically ofuniform resistance; but
W-hen the water sipks the float also sinks and Serial No. 203,614. (No model.)
the rays fall upon the selenium, diminishing the resistance so much that the current in the circuit becomes strong enough to ring the bell or to operate any similar translating device.
I The invention is not limited to the precise con-' structior hereinbefore described and shown,
as stated in'S'pragues Electricity, its Sources and Applications, page '10, the resistance of a piece of selenium varied through four hundred megoh ms in being taken 'from a dark room into a gaslightedroom. '1
Having now stated the object of the said invention, having described its praoticalrealizationbyreference to the accompanying drawing, andhaving particularly ascertained the Y manner in which the same operates to accom- 1 plish the said object,what I consider to be novel and original, and therefore claim as 'myinven 'tion, is
1. The'combinatiouof a source of light, a
translucent vessel containing a liquid, and a piece of selenium forming part of an electric circuit, including a translating device, suba described.
2. In-an automatic liquid-indicator, the combination' of a source of light, a condensinglen's, a liquid translucent containing' vessel, an
stantially for the purpose and in the manner opaquefloatin said vessel,,a piece of selenium,
and an electric circuit including a translating devicefsuch as anelectric signal, said source of light, lens, float, and selenium lying nor mally in an approximately straightline.
3. Inan automatic liquid-level indicator, the combination of a source of light, a liquid translucent containing-vessel, an opaque float therein, and a piece of selenium forming'part device, such as an electric signal,'-'s'aid'float being normally between said source of light and said selenium;
4. In a liquid-levelindicator,the combina- Eco of an electric circuit containlng a translating I tidn of a lamp, 0. double convex lens attached Witness my signature and seal this 24th thereto, a liquid-containing vessel, a. funnelof May,'1886.
shaped month fixed upon the side of said vessel, an opaque float. in said vessel, 9. piece of JOHN J. GHEGAN. [L. s.] 5 selenium, and an elebtsiqcircnit containing an f j elctric bell, said lamp,'lens, funnel, float, and Witnesses: selenium being normally inan approximately" EDWARD P. THOMPSON, straightline, asand for the purpose described. M. H. Torrme.
Publications (1)
Publication Number | Publication Date |
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US352647A true US352647A (en) | 1886-11-16 |
Family
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Family Applications (1)
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US352647D Expired - Lifetime US352647A (en) | Automatic electric liquid-level indicator |
Country Status (1)
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2490627A (en) * | 1945-06-30 | 1949-12-06 | Rca Corp | Photoelectric liquid level indicator |
US2621808A (en) * | 1945-08-24 | 1952-12-16 | Frazier Simplex | Apparatus responsive to variations in liquid level |
US2805652A (en) * | 1953-05-01 | 1957-09-10 | Minor W Stout | Water level responsive controls for combustion apparatus |
US2891241A (en) * | 1954-12-31 | 1959-06-16 | Gisholt Machine Co | Unbalance tolerance limit inspection machine |
US4014010A (en) * | 1975-08-01 | 1977-03-22 | Walter Joseph Jinotti | Fluid-dispensing apparatus having level control and alarm means |
US4445238A (en) * | 1982-09-29 | 1984-05-01 | Maxhimer Monroe R | Swimming pool water level control apparatus |
US4984462A (en) * | 1989-05-30 | 1991-01-15 | Meditor Corporation | Detachable liquid level monitoring apparatus and method |
US5743135A (en) * | 1993-08-27 | 1998-04-28 | Vlsi Technology, Inc. | Optical-fiber liquid-level monitor |
-
0
- US US352647D patent/US352647A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2490627A (en) * | 1945-06-30 | 1949-12-06 | Rca Corp | Photoelectric liquid level indicator |
US2621808A (en) * | 1945-08-24 | 1952-12-16 | Frazier Simplex | Apparatus responsive to variations in liquid level |
US2805652A (en) * | 1953-05-01 | 1957-09-10 | Minor W Stout | Water level responsive controls for combustion apparatus |
US2891241A (en) * | 1954-12-31 | 1959-06-16 | Gisholt Machine Co | Unbalance tolerance limit inspection machine |
US4014010A (en) * | 1975-08-01 | 1977-03-22 | Walter Joseph Jinotti | Fluid-dispensing apparatus having level control and alarm means |
US4445238A (en) * | 1982-09-29 | 1984-05-01 | Maxhimer Monroe R | Swimming pool water level control apparatus |
US4984462A (en) * | 1989-05-30 | 1991-01-15 | Meditor Corporation | Detachable liquid level monitoring apparatus and method |
US5743135A (en) * | 1993-08-27 | 1998-04-28 | Vlsi Technology, Inc. | Optical-fiber liquid-level monitor |
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