Machine for forming integral sidewalks and curbs

Claim 1

IN A MACHINE FOR FORMING INTEGRAL SIDEWALKS AND CURBS, THE COMBINATION OF: A FRAME; SIDE PORTIONS ON SAID FRAME; TRACTION WHEELS SUPPORTING SAID FRAME; AN ENGINE SUPPORTED ON SAID FRAME; RATIO DIFFERENTIAL DRIVE MECHANISM DRIVEN BY SAID ENGINE AND COUPLED TO SAID TRACTION WHEELS, WHEREBY A TRACTION WHEEL ENGAGING ONE OF SAID FORMS MAY BE ROTATED AT A GREATER SPEED THAN A TRACTION WHEEL SUPPORTED ON THE OTHER OF SAID FORMS, THEREBY PERMITTING SAID TRACTION WHEELS ACCURATELY AND UNIFORMLY TO MOVE SAID MACHINE ON CURVED PORTIONS OF SAID FORMS; AND CONCRETE FORMING ROLLER MEANS ROTATABLY MOUNTED ON SAID FRAME AND EXTENDING LATERALLY BETWEEN SAID SIDE PORTION THEREOF; PERIPHERAL PORTIONS OF SAID CONCRETE FORMING ROLLER MEANS DISPOSED TO FORM CONCRETE BETWEEN SAID FORMS; AND DRIVE MEANS FOR ROTATABLY DRIVING SAID CONCRETE FORMING ROLLER MEANS; A GUIDE WHEEL ARM PIVOTALLY MOUNTED ON A VERTICAL AXIS ON SAID FRAME AND EXTENDING IN A FORWARDLY DIRECTION THEREON; A GUIDE WHEEL ROTATABLY MOUNTED ON SAID ARM AND ENGAGEABLE WITH A FORM ON WHICH SAID MACHINE RUNS; AND MEANS FOR LOCKING SAID ARM AND SAID GUIDE WHEEL IN VARIOUS ANGULAR POSITIONS ABOUT SAID VERTICAL AXIS WITH RESPECT TO SAID FRAME.