GB533543A - Improvements in or relating to anti-vibration pivot mountings for the cards of navigational compasses - Google Patents

Improvements in or relating to anti-vibration pivot mountings for the cards of navigational compasses

Info

Publication number
GB533543A
GB533543A GB2840839A GB2840839A GB533543A GB 533543 A GB533543 A GB 533543A GB 2840839 A GB2840839 A GB 2840839A GB 2840839 A GB2840839 A GB 2840839A GB 533543 A GB533543 A GB 533543A
Authority
GB
United Kingdom
Prior art keywords
compasses
navigational
cards
relating
wire
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
GB2840839A
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.)
Kelvin Bottomley & Baird Ltd
Original Assignee
Kelvin Bottomley & Baird 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 Kelvin Bottomley & Baird Ltd filed Critical Kelvin Bottomley & Baird Ltd
Priority to GB2840839A priority Critical patent/GB533543A/en
Publication of GB533543A publication Critical patent/GB533543A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Ceramics (AREA)

Abstract

533,543. Magnetic compasses. KELVIN, BOTTOMLEY & BAIRD, Ltd., and WRIGHT, C. H. Oct. 21, 1939, No. 28408. [Class 97 (ii)] An anti-vibrational suspension for compass cards comprises a star-formation of wires connecting the centre post to the card. As shown a wire 1 is laced in the manner shown around pins 5 on an annulus frame 4 so as to form chords of the annulus the central portions being soldered at 12 to radial spokes 11 on a boss 3 of the post 13. The pins 5 are provided with bobbins 6 having a felt bush 7 and felt washers 8, 8a, metal washer 9 and nut 10. The wire 1, in lacing, passes under and over at the crossing points to give maximum frictional resistance.
GB2840839A 1939-10-21 1939-10-21 Improvements in or relating to anti-vibration pivot mountings for the cards of navigational compasses Expired GB533543A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2840839A GB533543A (en) 1939-10-21 1939-10-21 Improvements in or relating to anti-vibration pivot mountings for the cards of navigational compasses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2840839A GB533543A (en) 1939-10-21 1939-10-21 Improvements in or relating to anti-vibration pivot mountings for the cards of navigational compasses

Publications (1)

Publication Number Publication Date
GB533543A true GB533543A (en) 1941-02-14

Family

ID=10275135

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2840839A Expired GB533543A (en) 1939-10-21 1939-10-21 Improvements in or relating to anti-vibration pivot mountings for the cards of navigational compasses

Country Status (1)

Country Link
GB (1) GB533543A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278161A (en) * 1978-09-25 1981-07-14 Facet Enterprises, Inc. Coupling arrangement for an electromagnetic clutch
US5145330A (en) * 1988-09-13 1992-09-08 Sanden Corporation Compressor housing having a structure for preventing the slippage of vibroisolating members

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278161A (en) * 1978-09-25 1981-07-14 Facet Enterprises, Inc. Coupling arrangement for an electromagnetic clutch
US5145330A (en) * 1988-09-13 1992-09-08 Sanden Corporation Compressor housing having a structure for preventing the slippage of vibroisolating members

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