Hydraulic lifting device

A hydraulic lifting mechanism particularly of the type useful as a lifting jack having a safety locking device comprising a toothed rack, a locking pawl adapted to engage said rack, an actuating lever engaging said locking pawl, a rail extending at least approximately in a vertical direction, said actuating lever having a free end which is movably guided in said rail, said rail being adjustably movable at least in directions transversely to its longitudinal extensions, and two rollers provided at a free end of said actuating lever and rotatably supported about a horizontal axis and at a horizontal distance from each other, said rail being engaged between said rollers.

A hydraulic lifting mechanism particularly of the type useful as a lifting jack having a safety locking device comprising a toothed rack, a locking pawl adapted to engage said rack, an actuating lever engaging said locking pawl, and a rail extending at least approximately in a vertical direction, said actuating lever having a free end which is movably guided in said rail, said rail being adjustably movable at least in directions transversely to its longitudinal extensions, said rail being attached in a rotatable manner to at least one strap which is arranged to be swiveled about a horizontal axis.

A hydraulic lifting mechanism particularly of the type useful as a lifting jack having a safety locking device comprising a toothed rack, a locking pawl adapted to engage said rack, an actuating lever engaging said locking pawl, and a rail extending at least approximately in a vertical direction, said actuating lever having a free end which is movably guided in said rail, said rail being adjustably movable at least in directions transversely to its longitudinal extensions, said rail including at least one bolt projecting approximately in a horizontal direction therefrom with said lifting mechanism including a stationary member having a curved slot defined therethrough with said bolt extending through said slot.

A hydraulic lifting mechanism particularly of the type useful as a lifting jack having a safety locking device comprising a toothed rack, a locking pawl adapted to engage said rack, an actuating lever engaging said locking pawl, and a rail extending at least approximately in a vertical direction, said actuating lever having a free end which is movably guided in said rail, said rail being adjustably movable at least in directions transversely to its longitudinal extensions, said rail being constructed with an L-shaped cross-sectional configuration to comprise a pair of flanges, with one flange engaging between guide parts mounted on said actuating lever, said mechanism further including a bolt and a swiveled strap arranged upon the other flange of said rail.