Abstract: An overhead crane having an adjustable bearing assembly to adjust a wheel and axle of the crane in a horizontal direction in order to minimize skewing of the crane on a pair of parallel rails. A bearing retainer includes an outer surface sized to fit into an associated bore in an end truck of the crane, and an eccentric inner surface which engages the outer surface of a bearing. When the bearing retainer is rotated, the wheel and axle extending therethrough are moved in a horizontal direction. The bearing retainer includes a closed end having a surface which is engageable by a tool to allow for the rotation of the bearing retainer. A locking ring releasably fixes the bearing retainer and therefore the bearing to the frame of the crane as desired.

Abstract: An overhead crane having an adjustable bearing assembly to adjust a wheel and axle of the crane in a horizontal direction in order to minimize skewing of the crane on a pair of parallel rails. A bearing retainer includes an outer surface sized to fit into an associated bore in an end truck of the crane, and an eccentric inner surface which engages the outer surface of a bearing. When the bearing retainer is rotated, the wheel and axle extending therethrough are moved in a horizontal direction. The bearing retainer includes a closed end having a surface which is engageable by a tool to allow for the rotation of the bearing retainer. A locking ring releasably fixes the bearing retainer and therefore the bearing to the frame of the crane as desired.

Abstract: Disclosed is a crane hoist system having a hoist drum, a drum drive motor and control and power circuit limit switches. The improvement involves a first trip bar coupled to the power circuit limit switch and a second trip bar coupled to the control circuit limit switch. The bars are-vertically aligned and both are pivot mounted at their corresponding ends. The second trip bar is mounted for movement independently of the first trip bar. If the control circuit limit switch fails to function as the second bar is moved a suitable distance upward, such bar contacts and lifts the first bar which, in turn, trips the power limit switch. In one embodiment, both bars are straight and elongate and in another, the second bar is "U" shaped.