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这是1968年6月6日归挡的、776,286号专利申請书的一部分,现为美专利3,545,193号。本发明是关于船舶操舵机构,特别是关于有一新颖的液压推舵器的操舵机构。大船要行能产生大扭矩来转动船舵的推舵器。这种推舵器必须能在船舶航行时操作以抵制水在舵叶上的作用力。有代表性的是把四缸和四活塞推舵器直接固定在船壳上,如刚性框架或基座。由推舵器转动与舵杆相连接的舵柄来推动舵。液压缸和它的活塞与舵杆旋转轴线的对线校准一直是一个特别麻烦
This is part of the 776,286 patent application filed on June 6, 1968 and is now U.S. Patent No. 3,545,193. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marine steering mechanism, and more particularly to a steering mechanism having a novel hydraulic propulsion device. The big ship wants a puddle that produces large torque to turn the rudder. Such pusher must be able to operate while the ship is navigating to resist the force of water on the rudder blade. Typically, the four-cylinder and four-piston pushers are fixed directly to the hull, such as a rigid frame or base. The rudder is propelled by turning the tiller attached to the tiller. The alignment of the hydraulic cylinder and its piston with the axis of rotation of the tiller has been a particularly troublesome task