Ships – Sail or control means therefor – Specific sail structure or arrangement
Patent
1974-10-10
1976-07-13
Blix, Trygve M.
Ships
Sail or control means therefor
Specific sail structure or arrangement
114 39, B63H 904
Patent
active
039687651
ABSTRACT:
An apparatus for rotatably mounting a sail on racing yachts, sailboats and sailsleds, which includes a step adapted to be mounted on the hull of the craft, a boom, rigging connecting the sail to the boom, adapted to enable setting of the sail-to-boom orientation, and means for connecting the boom to the step so that the boom, sail and rigging are substantially freely rotatable about the step, and so that the orientation of the sail is maintained at a substantially constant angle with respect to the direction of the shifting apparent wind, to enable the sail to respond directly to shifting winds without requiring manual supervision, in order to provide maximum thrust with minimum drag for substantially increased racing yacht speed capabilities. A keel is connected to the bottom of the hull to rotate about a vertical axis through the abaft portion of the keel, in order to minimize racing yacht heeling and hydrodynamic drag. A rudder is rotatably connected astern, which includes a horizontal stabilizing fin oriented thereon so as to minimize racing yacht bucking by damping the yacht's response to choppy seas.
REFERENCES:
patent: 404626 (1889-06-01), Hunt
patent: 685943 (1901-11-01), Pool
patent: 768085 (1904-08-01), Stromberg
patent: 2858788 (1958-11-01), Lyman
patent: 2893339 (1959-07-01), Ram
patent: 3345969 (1967-10-01), Purvis
patent: 3838655 (1974-10-01), Kratz
Blix Trygve M.
Goldstein Stuart M.
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