| 摘要 |
948,725. Clamps. E. G. P. LAVIANO. Oct. 16, 1962 [June 6, 1962], No. 39149/62. Heading E2B. [Also in Division F2] A jam cleat 10 comprises a block 12 and a block 14 spaced therefrom, means mounting the blocks to converge at an acute angle with one side of block 12 facing one side of block 14, the block 12 including a toothed rack 20 on the side facing the block 14, a gear 26 adapted to mesh with the rack, means mounting the gear for movement along and in mesh with the rack between a locking position proximal to the converging ends of the blocks 12, 14 and an unlocking position distant from those ends, and means biasing the gear toward the locking position. As shown, the means mounting the gear 26 and biasing it to the locking position, comprises a spring assembly 24 which includes a torsion spring 28 formed with arms 30, 32, the spring 28 and arm 30 being located in a recess 22 in the block 12, and the arm 32 carrying a bearing sleeve 42 for the gear 26. The arrangement is such that a pull on a rope 52 located between the blocks, greater than that tensioning the rope in the direction of arrow A but in the opposite direction thereto, frees the gear 26 from locking engagement with the rope against the bias of the spring 28. |
