Road base spreading apparatus

Claim 1

IN BASE SPREADING APPARATUS HAVING A PAIR OF LATERALLY SPACED SIDE ASSEMBLIES AND A PUSH ARM EXTENDING REARWARDLY FROM EACH SIDE ASSEMBLY; MEANS FOR CONNECTING EACH PUSH ARM TO THE RESPECTIVE SIDE ASSEMBLY COMPRISING GENERALLY UPRIGHT PIVOT MEANS ACCOMMODATING HORIZONTAL ANGULATION OF THE PUSH ARM RELATIVE TO THE SIDE ASSEMBLY, GRIPPING MEANS ASSOCIATED WITH SAID PIVOT MEANS AND NORMALLY RETAINING THE PUSH ARM AGAINST RELATIVE MOVEMENT IN THE HORIZONTAL PLANE, SAID CONNECTING MEANS ALSO COMPRISING HORIZONTALLY DISPOSED TRANSVERSE PIVOT MEANS PIVOTALLY CONNECTING SAID PUSH ARM WITH SAID GENERALLY UPRIGHT PIVOT MEANS FOR ACCOMMODATING VERTICAL ANGULATION OF THE PUSH ARM RELATIVE TO THE SIDE ASSEMBLY IN A VERTICAL JACK-KNIFING RELATION, AND ADJUSTABLE STRUT MEANS EXTENDING BETWEEN THE SIDE ASSEMBLY AND THE PUSH ARM ADJUSTABLE TO VARY THE RELATIVE VERTICAL ANGULATION THEREOF AROUND THE AXIS OF SAID TRANSVERSE PIVOT MEANS AND NORMALLY RETAINING THE SAME IN ADJUSTED POSITION.