parts the jaws.Then inserts connecting bar into guide and backsmotor unit (truck or tractor), tripping the lock.The chains are for safety. To uncouple, the handlever is raised, the chain unhooked and the motorunit is driven forward. When coupling is made,and the pivoted jaws are closed in the eye… … This group represents three forms of standard practice for four-wheeltrailers. (Upper) A loaded truck (designed on tractor lines) operatesas tractor hauling two reversible trailers with dump bodies, havingfixed axles and automobile steering linkage for each pair of wheels.(Oval) A clear case of the…
Automobiles · Aeronautics
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