| 摘要 |
<p>An improved winch-type device for establishing and maintaining tension in a tie rope, cord, or cable is disclosed. The novel device is selflocking and does not require a ratchet or other locking mechanisms as used in convention winch devices. The device comprises a reel consisting of two end discs which are joined together at their centers by a spindle, i.e., an elongate shaft. The end discs of the reel are supported by a pair of bearing members in which the bearing faces thereof substantially enclose and make sliding contact with the perimeters of the respective discs. The bearing members are interconnected by a connecting member extending from one of the bearing members to the other so as to hold the bearing members in fixed position about the respective discs. A crank member is associated with one of the end discs for rotating the reel within the bearing members. Means are provided for attaching a tie rope, cord, or cable to the spindle of said reel so that the rope, cord, or cable can be wrapped around the spindle when the reel is rotated, to establish and maintain tension in the rope, cord, or cable. Frictional forces developed between the end discs of the reel and the bearing members render the tensioning device of this invention self-locking, i.e., after the reel has been rotated by the crank member to develop tension in the rope, cord, or cable attached thereto, the crank member can be released and the reel will remain stationary, thereby maintaining tension in the rope, cord, or cable.</p> |
