B66C23/00	Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricksor tower cranes (base-supporting structures with legs B66C 5/00; adaptations of girders or of track-supporting structures B66C 6/00)
	(Not Translated)