| 摘要 |
<p>METHOD AND APPARATUS FOR RELATIVE MOVEMENT OF CONTAINERS A head block assembly is proposed which comprises a first head block 16 having a first pair of cable engaging sheaves 40, a second head block 15 having a second pair of cable engaging sheaves 35, and a separation device 10 for moving the head blocks 15, 16 relatively. The first pair of sheaves 40 are selectively disengagable from the first head block 16, and selectively engagable with the second head block 15. Thus, in a first arrangement both of the pairs of sheaves 35, 40 are attached to the second head block 15, and in a second arrangement they are attached to the respective head blocks 15, 16. Methods of employing the head block assembly are also proposed. Figure 3B</p> |
