Stabilizer beam for stabilizing a machine for use on rough ground

A stabilizer beam for stabilizing a machine for use on rough ground for extending the frame of the machine laterally, the stabilizer beam comprising:

• a supporting box girder to be integral with or rigidly attached to the frame of the machine;
• a supporting beam slidable in the box girder;
• a bearer jack carrying a bearer shoe;
• means pivotally connecting the bearer jack to that one end of the beam to be remote from the machine frame such that the jack is movable from a rest position in which the jack is substantially horizontal and the bearer shoe is in contact with the end face of the beam, and an operative position in which the jack is substantially vertical;
• means for supporting and guiding the jack in its movement relative to the beam;
• means pivotally mounting the supporting and guiding means on the one end of the beam;
• means for locking the jack in its vertical position and operable on relative movement between the beam and box girder;
• means for pushing and pulling in the direction of the axis of the beam;
• and
• means for pivotally connecting the pushing and pulling means to the jack;
• the pushing and pulling means being operable to cause movement of the jack between its operative and inoperative position and extension and retraction of the beam relative to the box girder.