GB831738A - Pendulum - Google Patents

Pendulum

Info

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
Application number
GB2301857A
Inventor
Thomas William Lake
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sperry Gyroscope Co Ltd
Original Assignee
Sperry Gyroscope Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sperry Gyroscope Co Ltd filed Critical Sperry Gyroscope Co Ltd
Priority to GB2301857A priority Critical patent/GB831738A/en
Publication of GB831738A publication Critical patent/GB831738A/en
Expired legal-status Critical Current

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.
GB2301857A 1957-07-19 1957-07-19 Pendulum Expired GB831738A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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