| 摘要 |
A towing apparatus removably attachable to the fifth wheel of a towing vehicle includes a forward lifting beam having a distal extremity and a proximal extremity having a flat mounting face angularly disposed to the long axis of the beam and adapted to engage the fifth wheel. A rear lifting beam has a first extremity pivotably joined to the distal extremity of the forward lifting beam, and a second extremity attachable to the fifth wheel of a disabled tractor. A hydraulically activated piston, located in the forward lifting beam causes movement of the rear lifting in a vertical plane.
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