GB272424A - Improvements in large measuring instruments for machine installations legible at great distances using luminous indicators - Google Patents
Improvements in large measuring instruments for machine installations legible at great distances using luminous indicatorsInfo
- Publication number
- GB272424A GB272424A GB6459/27A GB645927A GB272424A GB 272424 A GB272424 A GB 272424A GB 6459/27 A GB6459/27 A GB 6459/27A GB 645927 A GB645927 A GB 645927A GB 272424 A GB272424 A GB 272424A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- instruments
- instrument
- indicating
- meter
- 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
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D7/00—Indicating measured values
- G01D7/02—Indicating value of two or more variables simultaneously
- G01D7/04—Indicating value of two or more variables simultaneously using a separate indicating element for each variable
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D7/00—Indicating measured values
- G01D7/02—Indicating value of two or more variables simultaneously
- G01D7/04—Indicating value of two or more variables simultaneously using a separate indicating element for each variable
- G01D7/06—Luminous indications projected on a common screen
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
272,424. Hardingham, G. G. M., (Hartmann & Braun Akt.-Ges.). March 8, 1927. Indicating, optical devices for.-In measuring instruments and meters for use at large power stations the moving elements or meter mechanisms are provided with mirrors and are mounted in large narrow instrument casings having screens upon which the indicating movements are projected by rays of light from suitable sources. The instruments may be fitted with several mirrors from which the light is reflected successfully by the mirrors being formed of differently coloured glass to give a corresponding 'optical indication and to act as a signal. An auxiliary instrument with a distinguishing coloured mirror may be mounted in the casing to give an indication serving as a pilot or limit reading, the auxiliary instrument being under the control of a separate source of power. In Figs. 1 and 2, a single instrument is shown comprising a casing k of angle iron covered with sheet iron, a measuring instrument m with a mirror s mounted in the rear side, and an optical system with a source of light l. A wire or other marker is placed in the path of light to serve as an indicating mark projected on to the opal glass or other screen as shown in Fig. 1. The scale on the glass is preferably mounted in a compartment separate from that of the indicator track and for a plurality of measuring instruments of the same order the tracks are arranged adjacent to one another between side scales as shown in Figs. 4, 8. The instruments may be provided with a plurality of mirrors s<1> - - s<3> Fig. 5 or mirrored surfaces g<1>, g<2> Fig. 6 each having a different coloured glass in the path of the light to distinguish indications above or below certain limiting values. In a modification an auxilary meter mh Fig. 7, may be provided for indicating the limit or correct value, the meter being operated by auxiliary current from a battery and variable resistance w. In Fig. 8 is represented a boiler installation with instruments for six boilers giving the consumption of coal in tons or steam in lbs. per hour, the images fw being the actual instrument readings and the images fr the pilot or limit readings. In order to adjust the meter mechanism in the casing k the securing bolts b, Fig. 9, pass through resilient packing layers i and by tightening or unscrewing of the bolts the mechanism can be positioned so that the track of the image agrees with the scale. The mechanism may be fitted with a rear indicating scale co-operating with a pointer z, a reduction gearing r<1>, r<2> being provided between the pointer and mirror spindle to reduce the angle of oscillation of the mirror. A ground glass cover plate t, placed at an angle so as to reflect the light to the side of the casing, is provided to exclude dust &c. from the meter mechanism. If the measuring instruments are of varied types and for different kinds of variables the instruments may be used as transmitting devices such as m<1> - - m<6>, Fig. 16, which are connected by resistances w<1> - - w<6 >and distance leads to a set of central receivers or quotient meters mz<1> - - mz<6> with optical systems as described above. An arrangement in which the rays of light cross over or cut through one another is shown in Figs. 18 and 19, wherein four images z<1> - - z<4> are projected on to a common track.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB6459/27A GB272424A (en) | 1927-03-08 | 1927-03-08 | Improvements in large measuring instruments for machine installations legible at great distances using luminous indicators |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB6459/27A GB272424A (en) | 1927-03-08 | 1927-03-08 | Improvements in large measuring instruments for machine installations legible at great distances using luminous indicators |
Publications (1)
Publication Number | Publication Date |
---|---|
GB272424A true GB272424A (en) | 1927-06-16 |
Family
ID=9814834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6459/27A Expired GB272424A (en) | 1927-03-08 | 1927-03-08 | Improvements in large measuring instruments for machine installations legible at great distances using luminous indicators |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB272424A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE749849C (en) * | 1941-02-19 | 1944-12-07 | Scale for measuring devices | |
DE757703C (en) * | 1939-09-27 | 1953-06-01 | Aeg | Device for photoelectric readjustment of objects according to the movement of a transmitter device |
DE102008047422A1 (en) * | 2008-09-15 | 2010-04-15 | Endress + Hauser Wetzer Gmbh + Co Kg | Field device i.e. data display device, has projection module arranged within housing, and projection surfaces and housing aligned on each other such that projection surfaces and projected data are visible outside of housing |
DE102009042097A1 (en) * | 2009-09-21 | 2011-03-24 | Claas Selbstfahrende Erntemaschinen Gmbh | Representation of operating variables of a machine |
DE102010028315A1 (en) * | 2010-04-28 | 2011-11-03 | Siemens Aktiengesellschaft | Method for the thermodynamic online diagnosis of a large-scale plant |
-
1927
- 1927-03-08 GB GB6459/27A patent/GB272424A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE757703C (en) * | 1939-09-27 | 1953-06-01 | Aeg | Device for photoelectric readjustment of objects according to the movement of a transmitter device |
DE749849C (en) * | 1941-02-19 | 1944-12-07 | Scale for measuring devices | |
DE102008047422A1 (en) * | 2008-09-15 | 2010-04-15 | Endress + Hauser Wetzer Gmbh + Co Kg | Field device i.e. data display device, has projection module arranged within housing, and projection surfaces and housing aligned on each other such that projection surfaces and projected data are visible outside of housing |
DE102009042097A1 (en) * | 2009-09-21 | 2011-03-24 | Claas Selbstfahrende Erntemaschinen Gmbh | Representation of operating variables of a machine |
DE102010028315A1 (en) * | 2010-04-28 | 2011-11-03 | Siemens Aktiengesellschaft | Method for the thermodynamic online diagnosis of a large-scale plant |
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