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Expired
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John Sua
Anton Bjerstedt
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Individual
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Publication of GB190715956ApublicationCriticalpatent/GB190715956A/en
15,956. Sua, J., and Bjerstedt, A. July 11. Screw propellers. - A tapering-spiral blade 3 is mounted on a central tubular boss 2, the blade vanishing at its ends 4, 5 at diagonally opposite points. The walls of the blades are almost perpendicular throughout from their bases to their outer edges, and are also very narrow. The propeller shaft is journaled in a standard secured to the boat's stern, and its opposite end is geared to the engine shaft. In modifications, the ends of the blades vanish into the boss at different points relatively to each other.
GB190715956D1907-07-111907-07-11Improvements in Propellers.
ExpiredGB190715956A
(en)