GB451995A - Improvements in or relating to tank stabilising installations for ships - Google Patents

Abstract

451,995. Stabilizing ships. SIEMENS APPARATE UND MASCHINEN GES., 4, Askanischer Platz, Berlin. Sept. 28, 1935, Nos. 26902 and 26903. Convention dates, Sept. 29, 1934 and Dec. 15, 1934. [Class 113 (i)] In stabilizing-installations for ships comprising tanks which communicate with the sea, the tank openings are arranged so that the tanks are filled or emptied by the flow of water relative to the ship, the kinetic energy being converted into potential energy during the filling operation. The tank openings 3, 4, Fig. 1, are provided for this purpose with partitioned scoops s<1>, Fig. 1a. The mouths of the scoops are alternately directed towards and away from the water flow to fill and supply the tanks, the latter by suction effect. The scoops are rotated in accordance with the movements of a roll angle indicator or in accordance with an output regulator such as is described in Specification 410,820. The air channel 5 connecting the tanks may be controlled by a valve 6 which is free to move in one direction or the other according to which of the two controlling solenoids 7a, 7b is energized. The electromagnets are reversed in rhythm with the rolling motion. Numerous modified forms of scoops are described. In one form, valves are mounted in the inlet and outlet channels, the valve being reversed by linkwork to reverse the in-and-out flow. In another form, the segmental plates s<1>-s<3>, Fig. 6b, normally close an opening in the skin plating. The plates are oscillated by the linkage shown to alternately produce inlet and outlet of water to the tanks. In another modification, the segmental plates are arranged in echelon.