| 摘要 |
The grasping means 22, 32, 33 are connected to the lower end of the mast 21 by means of a universal joint 23 enabling the inclination of these grasping means to be varied in relation to the vertical. Articulating members 25, 27 of the universal joint 23 are provided with clamping means 30, 31 for holding the joint 23 in a position which allows the grasping of the assembly 1 in an inclined position. <IMAGE>
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