Four wheel vehicle

Claim 1

A VEHICLE COMPRISING: A FIRST TWO WHEEL UNIT, A SECOND TWO WHEELED UNIT, ONE OF SAID UNITS INCLUDING A PROPELLING ENGINE, A DRAFT FRAME HAVING ONE END CONNECTED TO SAID SECOND UNIT FOR PIVOTAL MOVEMENT ABOUT A VERTICAL AXIS, MEANS PIVOTING SAID SECOND UNIT RELATIVE TO SAID FRAME ABOUT SAID VERTICAL AXIS THEREBY EFFECTING STEERING OF SAID VEHICLE, MEANS PIVOTALLY CONNECTING THE OTHER END OF SAID FRAME TO SAID FIRST UNIT FOR VERTICAL SWINGING OF THE LATTER ABOUT A TRANSVERSE PIVOT AXIS, AN EARTHWORKING IMPLEMENT SECURED TO SAID FIRST UNIT ON THE END THEREOF REMOTE FROM SAID SECOND UNIT FOR VERTICAL SWINGING MOVEMENT WITH SAID FIRST UNIT INCLUDING AN EARTH ENGAGING PORTION BROUGHT INTO CONTACT WITH THE EARTH UPON VERTICAL SWINGING MOVEMENT OF SAID FIRST UNIT, AND POWER MEANS INTERPOSED BETWEEN SAID FRAME AND FIRST UNIT FOR EFFECTING VERTICAL SWINGING MOVEMENT OF SAID FIRST UNIT ABOUT SAID TRANSVERSE AXIS BETWEEN A RAISED POSITION WHEREIN SAID EARTH ENGAGING PORTION DOES NOT CONTACT THE EARTH AND A LOWERED POSITION WHEREIN SAID EARTH ENGAGING PORTION DOES CONTACT THE EARTH.