GB665628A - Improvements in or relating to liquid level devices for tilt detection - Google Patents
Improvements in or relating to liquid level devices for tilt detectionInfo
- Publication number
- GB665628A GB665628A GB287249A GB287249A GB665628A GB 665628 A GB665628 A GB 665628A GB 287249 A GB287249 A GB 287249A GB 287249 A GB287249 A GB 287249A GB 665628 A GB665628 A GB 665628A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tilt
- bubble
- electrodes
- liquid
- platform
- 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
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
- G01C9/36—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble of the spherical type, i.e. for indicating the level in all directions
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Adjustable Resistors (AREA)
Abstract
665,628. Electric indicating systems. SQUIRE, A. M., and SPERRY GYROSCOPE CO., Ltd. March 3, 1950. [Feb. 2, 1949] No. 2872/49. Class 40 (i); [Also in Groups XX and XXXVI] In a device for detecting the tilt of a platform and controlling an electrical circuit energizing a tilt indicator or a torque device for nullifying the tilt, a circular container 1 (Figs. 1, 2) contains a resistive liquid e.g. picric acid in an alcoholic solvent surmounted by a bubble 2 of e.g. air, nitrogen, or a nonconductive immiscible liquid. Four symmetrical electrodes 4, 6, 7, 8 and a central electrode 5 protrude into the liquid, and the bubble and electrodes are dimensioned so that the latter do not touch the bubble within the operational limits of the device, and the bubble deflection varies the cross sections of the paths in dependence on the degree and direction of tilt while the path lengths remain constant. The consequent resistance variations between the electrodes operate known circuitry (e.g. balanced bridges) to operate a tilt indicator or torque devices maintaining the platform vertical. The device may control the erecting torques of a gyrovertical used as a stabilising reference for the platform. In a modification, Figs. 3, 4 (not shown), the liquid and bubble are contained in a bent tube having a central electrode and symmetrical side electrodes, and sensitive to a single direction of tilt.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB287249A GB665628A (en) | 1949-02-02 | 1949-02-02 | Improvements in or relating to liquid level devices for tilt detection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB287249A GB665628A (en) | 1949-02-02 | 1949-02-02 | Improvements in or relating to liquid level devices for tilt detection |
Publications (1)
Publication Number | Publication Date |
---|---|
GB665628A true GB665628A (en) | 1952-01-30 |
Family
ID=9747593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB287249A Expired GB665628A (en) | 1949-02-02 | 1949-02-02 | Improvements in or relating to liquid level devices for tilt detection |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB665628A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2792638A (en) * | 1955-11-14 | 1957-05-21 | Mathias P Pugel | Level vial |
US3290786A (en) * | 1963-11-01 | 1966-12-13 | Mithras Inc | Attitude sensing apparatus |
US3409991A (en) * | 1965-11-22 | 1968-11-12 | Bender | Electronic wheel alignment apparatus |
US5428902A (en) * | 1994-02-24 | 1995-07-04 | Precision Navigation, Inc. | Inclinometer sensing circuitry and operation |
US5774996A (en) * | 1995-02-14 | 1998-07-07 | Nissho Corporation | Biaxial inclination sensor |
-
1949
- 1949-02-02 GB GB287249A patent/GB665628A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2792638A (en) * | 1955-11-14 | 1957-05-21 | Mathias P Pugel | Level vial |
US3290786A (en) * | 1963-11-01 | 1966-12-13 | Mithras Inc | Attitude sensing apparatus |
US3409991A (en) * | 1965-11-22 | 1968-11-12 | Bender | Electronic wheel alignment apparatus |
US5428902A (en) * | 1994-02-24 | 1995-07-04 | Precision Navigation, Inc. | Inclinometer sensing circuitry and operation |
US5774996A (en) * | 1995-02-14 | 1998-07-07 | Nissho Corporation | Biaxial inclination sensor |
AU713859B2 (en) * | 1995-02-14 | 1999-12-09 | Nissho Corporation | Biaxial inclination sensor |
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