Abstract: A mobile crane which has the advantages of both a telescopic cantilever jib and of a lattice strut or lightweight jib. This is achieved in accordance with the invention by providing a powered link which swings the foot of the base section of the telescopic jib between a forward position for use and a rearward position for stowage.

Abstract: A telescopic strut jib crane includes a jib with at least three telescopic sections and at least one tie rope of fixed length. The rope is fed between the head of the base section and head of the outer section around a pulley at the foot of an intermediate telescopic jib section. One end of the tie rope (12) passes around a support pulley (14) to the rear of the jib around first extension pulley (32) at the head of the outermost jib section (2), down the outermost jib section, around a second extension pulley (28) at the foot of the outermost section, to be anchored at or adjacent (26) the head of the intermediate jib section (4). The other end of the tie rope (12) extends from the support pulley (14) around a third extension pulley (34) at the head of the intermediate section (4), down the intermediate section and around fourth extension pulley (36) at the base of said intermediate section (4), and then to the head of the adjacent lower section (6).

Abstract: A crane of the telescopic jib type wherein the telescopic jib sections are driven for outward and inward telescopic movement by a chain cable or the like which is connected to the jib sections and movement of which in one direction drives the sections outwardly and movement of which in the other direction drives the sections inwardly. This enables a simple and relatively cheap drive means to be employed.