| 摘要 |
669,729. Davits. SCHATS DAVITS, Ltd., and SLUITERS. F. June 16. 1950, No. 15129/50. Class 115. The davit arm 12 is situated within the length of the boat and is luffed by the screw 18 which is parallel to the upper end of the davit both in its in board and outboard position. The upper sheave 9 is carried on a lateral extension 11 of the davit arm so that it comes vertically over the boat's sling hook. |
