GB874606A - Improvements in or relating to boat rudders and centreboards - Google Patents
Improvements in or relating to boat rudders and centreboardsInfo
- 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
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.
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)
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 |
-
1960
- 1960-02-12 GB GB506260A patent/GB874606A/en not_active Expired
Cited By (2)
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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