| 摘要 |
A tow trailer unit for easy coupling to the rear of a standard automobile or truck to hoist and support one end of a second vehicle. The unit has a main frame or chassis with a standard hitch at its front end, a pair of self tracking interconnected dirigible wheels suspended from its rear end, a lift frame pivoted at its rear end suspending belts and chains for anchoring to the front end of the second vehicle, and hoist mechanism for swinging the lift frame from a rearwardly extended lower position to an upright position. Support struts pivoted on the main frame connect with the lift frame in its upright position to cooperate with the main frame in forming a triangular fixed supporting frame for the second vehicle. The unit may include a cable winch mechanism, a detachable boom usable to provide a lifting derrick, and a supplemental wheeled frame attachment to project rearwardly from the main frame under the boom to provide support for the weight lifted by the boom.
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