| 摘要 |
IMPROVEMENTS ON SWINGING RIGS FOR SAILING BOATS, being these improvements: that the connection of the boom to the rest of the rig is such that on the horizontal plane the boom must rotate simultaneously with the rest of the rig, but that it can move up and down in the vertical plane in order to give tension to the sails; that the axis widens as it comes through the deck creating a base wide and strong, making possible the control of the rotation of the whole rig from the said base, not only by having there the necessary rotation control mechanisms, but also because the remaining rig elements are forced to rotate with the said base; this base permits also the use of rotating shrouds and stays to help in supporting the mast. <IMAGE> |
