Gearbox for lift truck with telescopic jib, and machine equipped with same

A gearbox for a lift truck having a telescoping jib, comprising:

• a torque converter;
• a clutch mechanism;
• a primary input shaft driven by an output of the torque converter and driving an input of the clutch mechanism;
• a secondary shaft driven by an output of the clutch mechanism, said secondary shaft having an axis of rotation that is offset from an axis of rotation of said primary input shaft;
• first and second pinions mounted to freewheel on the secondary shaft and selectively driven by a synchronizer device;
• a tertiary shaft selectively driven by said first pinion, or by said second pinion in conjunction with a reversing pinion, said tertiary shaft having an axis of rotation that is offset from the axis of rotation of said secondary shaft;
• a plurality of pinions mounted on the tertiary shaft;
• and
• an output shaft having an axis of rotation that is offset from the axis of rotation said tertiary shaft and selectively driven by one of the plurality of pinions mounted on the tertiary shaft.