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    • 7. 发明专利
    • Improvements in Steering Gear.
    • GB190002035A
    • 1900-12-08
    • GB190002035D
    • 1900-02-01
    • PATTERSON JAMES
    • PATTERSON JAMES
    • 2035. Patterson, J. Feb. 1. Steering-engines.-Relates to the construction of steering-gear provided with means for preventing strains due to heavy seas striking the rudder. Fig. 1 shows a sectional elevation, and Fig. 2 a plan of one form of gear. To the rudder head is secured a toothed sector gearing with a pinion B' loosely mounted on a vertical shaft, and formed integral with, or secured to, an internal gear-wheel B . Above is loosely mounted a worm-wheel E, which carries four loose pinions gearing with the wheel B and with a pinion D secured to the vertical shaft. This worm-wheel is driven in the manner shown from the engine G. On the upper end of the vertical shaft is a crank-disc driving a pair of pumps J , J , which under ordinary conditions, owing to the loading of their discharge valves, offer sufficient resistance to prevent the shaft from rotating. Should a heavy sea strike the rudder, the shaft is rotated and damage to the engine or gear prevented. Teeth L on the outer periphery of the wheel B gear with a pinion M, through which the spindle N of the controlling-valve of the engine is rotated. Or the controlling-valve may be actuated from any other part moving with the rudder. In a modification, bevel gear is substituted for the spur gear shown.