GB831738A - Pendulum - Google Patents
PendulumInfo
- Publication number
- GB831738A GB831738A GB2301857A GB2301857A GB831738A GB 831738 A GB831738 A GB 831738A GB 2301857 A GB2301857 A GB 2301857A GB 2301857 A GB2301857 A GB 2301857A GB 831738 A GB831738 A GB 831738A
- Authority
- GB
- United Kingdom
- Prior art keywords
- axis
- liquid
- casing
- weight
- move
- 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
- G01C9/12—Measuring inclination, e.g. by clinometers, by levels by using a single pendulum plumb lines G01C15/10
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Fluid-Damping Devices (AREA)
Abstract
831,738. Levels. SPERRY GYROSCOPE CO. Ltd. July 19, 1957, No. 23018/57. Class 97(2) A pendulum for defining a vertical comprises a body including a closed hollow member mounted on bearings for rotation about an axis within a case substantially filled with liquid, the case having an internal shape in the form of a figure of revolution about the axis and the weight distribution of the body being such that the body, when lying in the liquid, is pendulous about the axis, vanes supported on the body being arranged to move the liquid with the body when it moves rotatively to the casing, the specific gravity of the liquid being such that the weight of liquid displaced is equal to the weight of the body. In the form shown a hollow cylinder 3 is mounted for rotation about its axis relatively to the axis of an oilfilled cylindrical casing 10. Vanes 1, 2, attached to the cyinder 3, move with a small clearance in the casing 10. A bobweight 13 is supported on wires 11, 12. The balance of the moving system may be adjusted by weights adjustable along threaded rods 4, 5, 6 projecting radially from the cylinder 3 and another rod 8 parallel to its axis.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2301857A GB831738A (en) | 1957-07-19 | 1957-07-19 | Pendulum |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2301857A GB831738A (en) | 1957-07-19 | 1957-07-19 | Pendulum |
Publications (1)
Publication Number | Publication Date |
---|---|
GB831738A true GB831738A (en) | 1960-03-30 |
Family
ID=10188764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2301857A Expired GB831738A (en) | 1957-07-19 | 1957-07-19 | Pendulum |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB831738A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2017045A1 (en) * | 1968-08-27 | 1970-05-15 | Datawell Nv | |
GB2174496A (en) * | 1985-04-30 | 1986-11-05 | Albert Ernest Stratton | Level |
-
1957
- 1957-07-19 GB GB2301857A patent/GB831738A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2017045A1 (en) * | 1968-08-27 | 1970-05-15 | Datawell Nv | |
GB2174496A (en) * | 1985-04-30 | 1986-11-05 | Albert Ernest Stratton | Level |
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