Screw propeller assemblies
OwnerAlbert Jacksoninventor
Life of this patent
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Abstract
A screw propeller assembly comprising a propeller shaft rotatable co-axially with a swash member, a propeller having a hub connected to the propeller shaft by way of a universal joint wherein the hub is mounted to the universal joint indirectly through jointing members, the jointing members and swash plate co-operating to cause the axis of rotation of the hub to move at an incline to the axis of rotation of the propeller shaft thereby providing a paddle action to the propeller in addition to the rotary motion thereof.
Claims9
A screw propeller assembly comprising a propeller shaft having associated therewith a universal joint defined by a ball rotatable in unison with the propeller shaft, a pair of jointing members connected together with one of these jointing members being located on each side of a diametrical plane through the ball and having internal surfaces shaped for co-operation with the ball, and at least one lug for transmitting rotation of the ball to the jointing members, a blade hub carried by the jointing members and a swash member co-operating with the jointing members to hold the axis of rotation of the hub at an incline to the axis of rotation of the propeller shaft, means for rotating the swash member in a direction opposite that of the propeller to cause said axis of rotation of the hub to describe a conical locus and thereby impart a paddle action to the blades.
Dependencies are inferred from the claim text.