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)
	Note(s) Group B66C 23/64 takes precedence over groups B66C 23/02-B66C 23/16. [5]