Mobile cleaning devices

Claim 1

A MOBILE CLEANING DEVICE COMPRISING LONGITUDINAL SIDE MEMBERS EACH HAVING A FRONT AND A REAR END, ROTARY CLEANING MEANS CARRIED BY SAID SIDE MEMBERS NEAR THE FRONT ENDS OF SAID SIDE MEMBERS, TRANSVERSE MEMBERS JOINING THE SIDE MEMBERS TO HOLD THE LONGITUDINAL SIDE MEMBERS IN SPACED PARALLEL RELATIONSHIP, FRONT GROUND WHEELS AND REAR GROUND WHEELS ROTATABLY MOUNTED RESPECTIVELY AT THE FRONT AND REAR ENDS OF SAID LONGITUDINAL SIDE MEMBERS, SAID SIDE MEMBERS BEING PROVIDED WITH HOLES TO SUPPORT A SPINDLE HAVING AN ARM WITH A STUB AXLE SPACED FROM SAID SPINDLE AT EACH END, SAID STUB AXLES TURNABLY CARRYING THE FRONT GROUND WHEELS SO THAT TURNING THE SPINDLE IN THE HOLES MOVES THE ARMS TO RAISE OR LOWER THE FRONT END OF THE FRAME ON THE FRONT WHEELS AND IN RELATION TO THE GROUND AS DESIRED BY AN OPERATOR, ONE SAID ARM BEING IN THE FORM OF A BELL CRANK LEVER PIVOTING WITH THE SPINDLE AND PROVIDING A SECOND ARM EXTENDING FROM SAID SPINDLE AND A BOWDEN WIRE ENCASED IN A SHEATH CONNECTED TO SAID SECOND ARM AT ONE END, SAID SHEATH BEING ANCHORED TO A SIDE MEMBER, AND A HAND LEVER SECURED TO THE OTHER END OF THE BOWDEN WIRE WHEREBY SAID WIRE IS CONTROLLED, AND A SPRING ENGAGING SAID ARMS TO BIAS SAID ARMS IN A DIRECTION TO LOWER THE FRONT END OF THE CLEANING DEVICE, SAID REAR GROUND WHEELS BEING MOUNTED ON AN AXLE EXTENDING BETWEEN THE REAR ENDS OF SAID SIDE MEMBERS, PLATES PIVOTALLY MOUNTED ON SAID AXLE OF THE REAR GROUND WHEELS TO FORM THE LOWER ENDS OF HANDLES BY WHICH THE CLEANING DEVICE IS MANIPULATED, SAID PLATES BEING PROVIDED WITH BOLT AND ARCUATE SLOT MEANS FOR ADJUSTMENT OF SAID HANDLES TO SUIT AN OPERATOR.