GB554244A - Improvements in or relating to compensating means for magnetic compasses - Google Patents

Improvements in or relating to compensating means for magnetic compasses

Info

Publication number
GB554244A
GB554244A GB16656/41A GB1665641A GB554244A GB 554244 A GB554244 A GB 554244A GB 16656/41 A GB16656/41 A GB 16656/41A GB 1665641 A GB1665641 A GB 1665641A GB 554244 A GB554244 A GB 554244A
Authority
GB
United Kingdom
Prior art keywords
flinders
bars
compass
craft
ship
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
GB16656/41A
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.)
Bendix Aviation Corp
Original Assignee
Bendix Aviation Corp
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 Bendix Aviation Corp filed Critical Bendix Aviation Corp
Publication of GB554244A publication Critical patent/GB554244A/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
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/38—Testing, calibrating, or compensating of compasses

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

554,244. Magnetic compasses. BENDIX AVIATION CORPORATION. Dec. 24, 1941, No. 16656. Convention date, Jan. 23. [Class 97 (ii)] Relates to a direction indicating device for a craft whereon a compass is mounted and is subject to errors due to the effect of the vertical component of the earth's field upon soft iron masses aboard the craft and consists in mounting parallel Flinders bars for independent revolution about the pivot axis of the compass. The device is capable of adjustment to give a compensating effect equivalent to a single Flinders bar located on an axis other than the fore and aft axis of the craft without incurring practical difficulties such as may occur in the use of a single Flinders bar As shown, a pair of Flinders bars 10, 11 secured to gear rings 17, 18 may be independently adjusted around the vertical axis of the compass card 13 by means of knobs 23, 24. The bars are provided with pointers 29, 30 registering with a scale of degrees 31. Assuming that all compensation for quadrantal deviation, and semicircular deviation resulting from the sub-permanent magnetism of the ship has been effected at the equator and the ship brought to some North magnetic latitude, the bearing of maximum deviation is ascertained and the ship is headed along this course. The Flinders bars 10, 11 are then adjusted until the compass error is compensated.
GB16656/41A 1941-01-23 1941-12-24 Improvements in or relating to compensating means for magnetic compasses Expired GB554244A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US554244XA 1941-01-23 1941-01-23

Publications (1)

Publication Number Publication Date
GB554244A true GB554244A (en) 1943-06-25

Family

ID=21997697

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16656/41A Expired GB554244A (en) 1941-01-23 1941-12-24 Improvements in or relating to compensating means for magnetic compasses

Country Status (1)

Country Link
GB (1) GB554244A (en)

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