A sailing ship (1) has at least one mast (2,3,4) rigidly attached thereto, to which the yards (5 to 9) are rotatably attached. By an actuating shaft (21), the sail (22, 22a, 22b) can be reefed and, with the aid of a corresponding rope (24), it can be erected or stretched. The sail (22, 22a, 22b) is narrower in the middle than at the edges and has upper and lower boltropes (48, 49) that are guided in grooves (27) to the yards (5-9). Erecting and reefing of the sail (22, 22a, 22b) and bracing can be accomplished by remote control. Because of the high speed that can be attained, energy recovery is possible with a propeller.
A sail device characterized in that a sail frame is formed of upper and lower horizontal beam members fixed horizontally to a mast and linealy bent at bending points, holding pillars that are rotatably supported at the above mentioned bending points by these horizontal beam members and that hold a part of a developed sail, and supporting pillars arranged and fixed at both right and left ends of the above mentioned horizontal beam members and assembled rotatably with respect to the horizontal beam members and rotation stoppably by stopper means, at least, between the above mentioned upper and lower horizontal beam members, the lower horizontal beam member is formed to be of a horizontally expanding shape, a sail formed of a flexible material is reinforced by fitting a plurality of self-standing rods in the vertical direction of the sail and the above mentioned self-standing rods can be supported at the lower ends on the above mentioned lower horizontal beam member.
A sail device to be attached to the back of a bicycle rider. The device has a harness to permit attachment to the rider. A frame is attached to the harness and a further frame is pivotally attached to that frame. There is a control to control pivoting of the two frames. A sail is mounted on one frame and is movable between an extended position and a retracted position. The device has controls to extend and retract the sail.
A masting for sailboats, which comprises: at least three poles, the lower end of which are fitted in the bridge or deck of the boat, while the upper ends are connected one to the other to form the vertex of an ideal pyramid whose corners are formed by said poles; and a plurality of stays in tension between said vertex and an anchoring point on the boat, the sails being borne by said stays.
A mast for a sailboat includes a plurality of spaced parallel bars arranged as a polygon in cross-section wherein the bars are of a size to permit air flow therebetween and being oriented such that one of the bars is disposed nearer the aft of the boat than the remaining bars. Bracing members are secured between the bars and means are provided for securing a luff edge of a sail to the one bar to thereby attach the sail to the sailboat.
