GB809164A - Improvements in and relating to levelling instruments - Google Patents

Improvements in and relating to levelling instruments

Info

Publication number
GB809164A
GB809164A GB17675/56A GB1767556A GB809164A GB 809164 A GB809164 A GB 809164A GB 17675/56 A GB17675/56 A GB 17675/56A GB 1767556 A GB1767556 A GB 1767556A GB 809164 A GB809164 A GB 809164A
Authority
GB
United Kingdom
Prior art keywords
magnet
disc
pendulum
spindle
face
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
GB17675/56A
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.)
FREDERICK BOWES D ENIS
Original Assignee
FREDERICK BOWES D ENIS
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 FREDERICK BOWES D ENIS filed Critical FREDERICK BOWES D ENIS
Publication of GB809164A publication Critical patent/GB809164A/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)
  • Level Indicators Using A Float (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Abstract

809,164. Levels. ENIS, F. B. D'. June 7, 1956 [Aug. 31, 1955], No. 17675/56. Class 97 (2) In a level of the pendulum type the pendulum is pivoted about the axis of symmentry of an annular magret system which damps its movements, pendulum and magnet being relatively axially adjustable. As shown in Fig. 5, the pointer 4, moving over a scale 9, is secured to a spindle carried in bearings 6, 7. A disc 8D, attached to the spindle, moves over the face of an annular magnet 10 and carries a weight in the form of a mercury capsule 8C. The effective separation of the magnet 10 and disc 8D may be varied by adjusting the magnet, by substituting a disc of different thickness or adding an extra disc 8E. In the form shown in Fig. 1, the pendulum 8 hangs within the magnet system, or it may hang past the end face with a cylindrical end portion projecting in proximity to the outer face of the magnet. A further cylindrical portion may project within the magnet. The casing 1 carries tangential straight edges 2, 3. The magnet may be formed of two juxtaposed horseshoe portions. A cam-operated device may be provided to centre the spindle within the magnet system.
GB17675/56A 1955-08-31 1956-06-07 Improvements in and relating to levelling instruments Expired GB809164A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA809164X 1955-08-31

Publications (1)

Publication Number Publication Date
GB809164A true GB809164A (en) 1959-02-18

Family

ID=25575135

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17675/56A Expired GB809164A (en) 1955-08-31 1956-06-07 Improvements in and relating to levelling instruments

Country Status (1)

Country Link
GB (1) GB809164A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121961A (en) * 1982-06-09 1984-01-04 Jeco Kk Angle change detector
GB2243687A (en) * 1990-04-19 1991-11-06 Yii Lii Products Co Ltd An instrument for indicating an angular position of an object
EP0964222A1 (en) * 1997-12-02 1999-12-15 Matsushita Electric Industrial Co., Ltd. Tilt angle sensor
WO2004050308A1 (en) * 2002-11-26 2004-06-17 Michel Philippe Angular-positioning device which is to be mounted on a portable piercing tool
CN114877850A (en) * 2022-05-30 2022-08-09 玉环普天单向器有限公司 Starting gear detection tool and detection method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121961A (en) * 1982-06-09 1984-01-04 Jeco Kk Angle change detector
GB2243687A (en) * 1990-04-19 1991-11-06 Yii Lii Products Co Ltd An instrument for indicating an angular position of an object
EP0964222A1 (en) * 1997-12-02 1999-12-15 Matsushita Electric Industrial Co., Ltd. Tilt angle sensor
EP0964222A4 (en) * 1997-12-02 2002-11-27 Matsushita Electric Ind Co Ltd Tilt angle sensor
WO2004050308A1 (en) * 2002-11-26 2004-06-17 Michel Philippe Angular-positioning device which is to be mounted on a portable piercing tool
CN114877850A (en) * 2022-05-30 2022-08-09 玉环普天单向器有限公司 Starting gear detection tool and detection method
CN114877850B (en) * 2022-05-30 2023-10-20 玉环普天单向器有限公司 Starting gear detection tool and detection method

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