GB874606A - Improvements in or relating to boat rudders and centreboards - Google Patents

Improvements in or relating to boat rudders and centreboards

Info

Publication number
GB874606A
GB874606A GB506260A GB506260A GB874606A GB 874606 A GB874606 A GB 874606A GB 506260 A GB506260 A GB 506260A GB 506260 A GB506260 A GB 506260A GB 874606 A GB874606 A GB 874606A
Authority
GB
United Kingdom
Prior art keywords
slot
centreboards
sheet
slots
edges
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
GB506260A
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
Priority to GB506260A priority Critical patent/GB874606A/en
Publication of GB874606A publication Critical patent/GB874606A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06—Steering by rudders
    • B63H25/38—Rudders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B41/00—Drop keels, e.g. centre boards or side boards ; Collapsible keels, or the like, e.g. telescopically; Longitudinally split hinged keels

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

874,606. Centreboards ; rudders. BERGE, J. M. A. C. Feb. 12, 1960, No. 5062/60. Class 114. A centreboard 1 or rudder 1a comprises an upright flexible sheet 1, Fig. 3, of material extending through a slot in each of two horizontal vertically spaced apart guide members 2, 3, the slot in the upper guide member 2 being biconcave and the slot in the lower guide member 3 being biconvex. This arrangement enables the sheet 1, under the thrust F created by the water, to bear against the edges 4b and 5a of the slots, which edges are located on either side of the plane of the sheet, and to adapt of its own accord a curved shape corresponding to the curvature (in the same direction) of the cages 4b and 5a of the slots.
GB506260A 1960-02-12 1960-02-12 Improvements in or relating to boat rudders and centreboards Expired GB874606A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB506260A GB874606A (en) 1960-02-12 1960-02-12 Improvements in or relating to boat rudders and centreboards

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB506260A GB874606A (en) 1960-02-12 1960-02-12 Improvements in or relating to boat rudders and centreboards

Publications (1)

Publication Number Publication Date
GB874606A true GB874606A (en) 1961-08-10

Family

ID=9789040

Family Applications (1)

Application Number Title Priority Date Filing Date
GB506260A Expired GB874606A (en) 1960-02-12 1960-02-12 Improvements in or relating to boat rudders and centreboards

Country Status (1)

Country Link
GB (1) GB874606A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421796A1 (en) * 1978-04-03 1979-11-02 Boutemy Jean Pierre Height adjustable keel for sailing vessel - has guides fitting grooves in hull to prevent misalignment due to water pressure
GB2156297A (en) * 1984-03-28 1985-10-09 Ishikawajima Harima Heavy Ind Rudders with wings and method for manufacture thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421796A1 (en) * 1978-04-03 1979-11-02 Boutemy Jean Pierre Height adjustable keel for sailing vessel - has guides fitting grooves in hull to prevent misalignment due to water pressure
GB2156297A (en) * 1984-03-28 1985-10-09 Ishikawajima Harima Heavy Ind Rudders with wings and method for manufacture thereof

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