| 摘要 |
An apparatus generally consisting of a base member mountable on a component of a prime mover which may be pivoted about a transverse axis, a carrier mounted on the base member displaceable along a transverse line of travel between first and second positions and a boom mounted on the carrier, disposable in an inoperative position disposed along such line of travel when the carrier is in its first position and pivotal to an operative position disposed at an angle relative to such line of travel when the carrier is in its second position.
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