Earthmoving and hoisting machines

Claim 1

AN EARTHMOVING MACHINE COMPRISING A FRAME STRUCTURE, A BOOM HAVING ONE END PIVOTED ON SAID FRAME STRUCTURE, A BOOM CYLINDER FOR ACTUATING SAID BOOM, SAID BOOM HAVING A CYLINDRICAL BODY AND A PISTON ROD AND BEING PIVOTED ON SAID FRAME STRUCTURE AND ALSO ON SAID BOOM, AN ARM PIVOTED ON THE OTHER END OF SAID BOOM, AN ARM CYLINDER FOR ACTUATING SAID ARM, SAID ARM CYLINDER HAVING A CYLINDRICAL BODY AND A PISTION ROD AND BEING PIVOTED ON SAID BOOM AND ALSO ON SAID ARM, EACH ONE OF SAID TWO CYLINDRICAL BODIES HAVING A PAIR OF TRUNNIONS HAVING A COMMON AXIS EXTENDING AT RIGHT ANGLES AND RADIALLY TO THE AXIS OF SAID CYLINDRICAL BODIES, FLUID SUPPLY MEANS IN SAID TRUNNIONS, FLUID SUPPLY LINES FOR CONNECTING SAID FLUID SUPPLY MEANS FOR SAID CYLINDRICAL BODY, BEARING MEMBERS RESPECTIVELY SECURED ON SAID FRAME STRUCTURE, SAID BOOM AND SAID ARMS, SAID BEARING MEMBERS ADAPTED TO RECEIVE SAID TRUNNIONS AND SWIVEL JOINT MEANS MOUNTED BETWEEN SAID CYLINDRICAL BODIES AND SAID BEARING MEMBERS WHEREBY MISALIGNMENTS OCCURING BETWEEN SAID FRAME STRUCTURE, SAID BOOM AND SAID ARM ARE ACCOMMODATED; SAID FLUID SUPPLY MEANS IN EACH ONE OF SAID TRUNNIONS COMPRISING AN AXIAL RECESS AND AN AXIAL BORE FORMED IN SAID TRUNNION, A CONNECTION MEMBER MOUNTED FOR FREE ROTATION IN SAID RECESS AND CONNECTED TO A DUCT FED WITH COMPRESSED FLUID, A LOCK MEMBER SECURED IN SAID RECESS FOR HOLDING SAID CONNECTED MEMBER IN POSITION AND A RADIAL BORE OPENING IN SAID AXIAL BORE AND COMMUNICATING WITH SAID SUPPLY LINE.