Abstract: A hydraulic linkage which is usable as a front loader on an agricultural or other tractor (1) comprises at least one jib, and usually two interconnected jibs (5, 6, 9) which jibs are upwardly and downwardly turnable about an axis (3) relative to frame means (2). Each jib (5, 6, 9) comprises telescopic firt (5) and second (6) portions and the second portions (6) are extendible from the first portions (5) during raising of the jibs so that a load/apparatus carried at the outer end (9) of each second portion (6) is raised substantially vertically, rather than arcuately about said axis (3). Spring (44) operated lost-motion mechanism prevents such extension during a lower arc of movement of the jibs (5, 6, 9) about said axis (3).