Multi function control mechanism

摘要

Three independent functions are controlled from a single control lever. The lever is mounted on a universal joint having a slip yoke, a flanged yoke and a cross member extending between the two yokes and defining a first transverse pivot axis and a second transverse pivot axis. The slip yoke is provided with first and second ball joints located in the same plane as the cross member. The first function is controlled by the fore-and-aft movement of the control lever pivoting the slip yoke about the first transverse pivot axis moving the first ball joint up and down. The first ball joint is coupled to a first link that moves the first hydraulic control valve. The second function is controlled by the side-to-side movement of the control lever. Such a side-to-side movement pivots the slip yoke about the second transverse pivot axis moving the second ball joint and second link positioning the second hydraulic control valve. The third function is controlled by the twisting movement of the control lever. A strap is welded to the control lever and is provided with a third ball joint that is coupled to a third linkage for manipulating the third hydraulic control valve. The third linkage is provided with a rod, a bell crank and a third link.