GB426245A - Improvements in or relating to precision instruments and mountings therefor - Google Patents

Improvements in or relating to precision instruments and mountings therefor

Info

Publication number
GB426245A
GB426245A GB25339/34A GB2533934A GB426245A GB 426245 A GB426245 A GB 426245A GB 25339/34 A GB25339/34 A GB 25339/34A GB 2533934 A GB2533934 A GB 2533934A GB 426245 A GB426245 A GB 426245A
Authority
GB
United Kingdom
Prior art keywords
bellows
relating
sept
vibrations
attached
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
GB25339/34A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB426245A publication Critical patent/GB426245A/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
    • G01C17/02—Magnetic compasses
    • G01C17/04—Magnetic compasses with north-seeking magnetic elements, e.g. needles
    • G01C17/18—Supporting or suspending compasses, e.g. by gimbal, by flotation

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

426,245. Vibration-dampers. FLOREZ, L. DE, 19, Rector Street, New York, U.S.A. Sept. 3, 1934, No. 25339. Convention date, Sept. 1, 1933. [Class 108 (iii)] [See also Groups XX and XIX] An instrument, such as a magnetic compass is supported by a metallic bellows in order to minimize the effect of vibrations. As shown, a compass bowl 6 is attached at the bottom to the lower end of a metallic bellows 9, attached at its upper end to an outer casing 8. In order to damp the vibrations a layer of felt 18 is secured between the edges of bellows and the casing 8 and the motion of the bellows is used to force air through a restricted orifice 41. The size of the orifice may be varied to control the damping. In a modification the bellows are damped by felt washers arranged between the convolutions.
GB25339/34A 1933-09-01 1934-09-03 Improvements in or relating to precision instruments and mountings therefor Expired GB426245A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US426245XA 1933-09-01 1933-09-01

Publications (1)

Publication Number Publication Date
GB426245A true GB426245A (en) 1935-03-29

Family

ID=21922907

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25339/34A Expired GB426245A (en) 1933-09-01 1934-09-03 Improvements in or relating to precision instruments and mountings therefor

Country Status (1)

Country Link
GB (1) GB426245A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1141463B (en) * 1955-09-17 1962-12-20 Plath Fabrik Nautischer Instr Spring compass suspension

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1141463B (en) * 1955-09-17 1962-12-20 Plath Fabrik Nautischer Instr Spring compass suspension

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