| 摘要 |
A portable device to compress a bow comprising a pulley system with a block and tackle and fixed pulleys which, by wiring, are connected to a set of fastening supports with fastening ends. The fastening ends fasten and pull the ends of the arms or limbs of a bow, under traction exerted by the block and tackle. The block and tackle has a drive portion and a brake controlling the traction and release of the cables connected to the fastening supports. Upon pulling the drive portion, the block and tackle produces the approach between the first and the second pulleys. This displacement between the pulleys acts on the cables which, through the fixed pulleys, cause the approach between the fastening supports. This displacement of the fastening supports overcomes the resistance of the bow and compresses it. Once the desired compressive level is reached, the brake or blockage is actuated.
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