Excavators

Claim 1

AN EXCAVATOR FOR MOUNTING ON A VEHICLE, INCLUDING, A ROTATABLE KING POST ASSEMBLY, ATTACHMENT MEANS ADAPTED TO BE SECURED TO A VEHICLE AND ON WHICH ATTACHMENT MEANS THE KING POST ASSEMBLY IS ROTATABLY MOUNTED ABOUT A VERTICAL AXIS, MEANS FOR ROTATING THE KING POST ASSEMBLY ABOUT SAID VERTICAL AXIS, A MAIN BOOM PIVOTALLY MOUNTED UPON THE KING POST ASSEMBLY ABOUT A HORIZONTAL AXIS FOR MOVEMENT OF THE MAIN BOOM UP AND DOWN IN A VERTICAL PLANE, A DIPPER ARM MOUNTING ASSEMBLY CONNECTED TO THE OUTER END OF THE MAIN BOOM, A DIPPER ARM PIVOTALLY MOUNTED UPON SAID MOUNTING ASSEMBLY ABOUT A HORIZONTAL AXIS FOR MOVEMENT OF THE DIPPER ARM UP AND DOWN IN A VERTICAL PLANE AND ALSO PIVOTALLY MOUNTED ABOUT A VERTICAL AXIS UPON SAID MOUNTING ASSEMBLY FOR MOVEMENT OF THE DIPPER ARM RELATIVE TO THE MAIN BOOM ABOUT SAID VERTICAL AXIS, LINK MEANS CONNECTED BETWEEN SAID DIPPER ARM MOUNTING ASSEMBLY AND THE KING POST ASSEMBLY FOR MOUNTING VERTICAL SAID VERTICAL AXIS OF PIVOTING OF THE DIPPER ARM IN ALL OPERATIVE POSITIONS OF THE MAIN BOOM, A TOOL PIVOTALLY MOUNTED UPON THE DIPPER ARM ABOUT A HORIZONTAL AXIS FOR MOVEMENT IN A VERTICAL PLANE, LIFTING AND LOWERING MEANS WHEREBY THE MAIN BOOM IS MOVED UP AND DOWN IN A VERTICAL PLANE, CROWING MEANS FOR PIVOTING THE DIPPER ARM ABOUT ITS HORIZONTAL AXIS FOR UP AND DOWN MOVEMENT THEREOF IN A VERTICAL PLANE, TRAVERSING MEANS FOR PIVOTING THE DIPPER ARM ABOUT ITS VERTICAL AXIS AND FURTHER CROWDING MEANS ADAPTED TO ROCK THE TOOL ABOUT THE SAID HORIZONTAL AXIS FOR MOVEMENT IN A VERTICAL PLANE.