Forms and screed for paving materials

Abstract

An apparatus for installation of paving materials has a screed that is configured to extend across a gap between first and second forms, wherein the first and second forms are piecewise parallel with respect to each other. The screed has at least a first section that is coupled to a second section. The screed has a first height adjusting member with a first seat surface for slidable contact along the first form and a second height adjusting member with a second seat surface for slidable contact along the second form. The first and second height adjusting members are adjustable to set the height and angle of the at least first and second sections of the screed within the gap.

1 . A screed apparatus for paving materials comprising:
 a modular screed body that is horizontally extended by coupling at least a first and a second screed section together, wherein the first screed section has a tongue protrusion and the second screed section has a corresponding sleeve opening that fits over the tongue protrusion for coupling the first and second screed sections,   wherein at least the first screed section has a vertically extending projection along an outside end,   wherein the projection along the outside end supports a vertical channel that extends beyond the outside end of the first screed section;   and   a height selection block that fits into the vertical cavity and fastens within the vertical cavity.   
     
     
         2 . The screed apparatus of  claim 1  wherein
 the tongue protrusion is a first tongue protrusion, 
 the sleeve opening is a first sleeve opening, 
 the vertically extending projection is a first vertically extending projection, 
 the outside end is a first outside end, 
 the vertical channel is a first vertical channel, 
 the height selection block is a first height selection block, 
 and further comprising a third screed section that couples to a corresponding second tongue in the second screed section by a second corresponding sleeve opening in the third screed section that fits the second tongue protrusion, 
 wherein the third screed section has a second vertically extending projection along a second outside end, 
 wherein the second projection along the second outside end supports a second vertical channel that extends beyond the second outside end of the third screed section; 
 and 
 a second height selection block that fits into the second vertical cavity and fastens to a selectable height position within the second vertical cavity. 
 
     
     
         3 . A screed apparatus for paving materials comprising:
 at least a first elongated screed end section and a second elongated screed end section, wherein each elongated screed end section is substantially rectangular in shape and has a vertically extending projection along an outside end,   wherein the projection along each outside end supports a vertical channel that extends beyond the outside end of the screed section;   a height selection block at each outside end, wherein the height selection block fits into the corresponding vertical cavity and fastens to a selectable height position within the vertical cavity by a fastener;   and   one or more central screed sections that fit between the end sections to elongate the screed apparatus,   wherein one or more of the screed sections is configured to couple to an adjacent screed section by a tongue protrusion formed on the screed section that is sized to fit into a corresponding sleeve opening formed in the adjacent screed section.   
     
     
         4 . The screed apparatus of  claim 3  wherein the fastener is a bolt extended through a corresponding hole in the vertical cavity. 
     
     
         5 . The screed apparatus of  claim 3  wherein the fastener is a clamp. 
     
     
         6 . The screed apparatus of  claim 3  wherein one or more of the central screed sections is preformed to impart a convex surface profile to a bottom surface of the screed apparatus. 
     
     
         7 . The screed apparatus of  claim 3  wherein one or more of the central screed sections is preformed to impart a concave surface profile to a bottom surface of the screed apparatus. 
     
     
         8 . The screed apparatus of  claim 3  wherein one or more of the height selection blocks is vertically adjustable to adjust screed height within a gap. 
     
     
         9 . The screed apparatus of  claim 3  wherein each of the screed end and central screed sections are molded. 
     
     
         10 . The screed apparatus of  claim 3  further comprising one or more external clamps that affix one or more of the screed sections to each other. 
     
     
         11 . The screed apparatus of  claim 10  wherein the one or more external clamps further comprise a bucket accepting coupling. 
     
     
         12 . A screed apparatus for paving materials comprising:
 at least a first elongated screed end section and a second elongated screed end section, wherein each elongated screed end section is substantially rectangular in shape and has a vertically extending projection along an outside end,   wherein the projection along each outside end supports a vertical channel that extends beyond the outside end of the screed section;   a height selection block at each outside end, the height selection block having a plurality of holes, wherein the height selection block fits into the corresponding vertical cavity and fastens within the vertical cavity by a fastener extended through one of the plurality of holes;   and   one or more central screed sections that elongate the screed apparatus and that are preformed to impart a curved profile to a bottom surface of the screed apparatus,   wherein one or more of the screed sections is configured to couple to an adjacent screed section by a tongue protrusion formed on the screed section and sized to fit into a corresponding sleeve opening formed in the adjacent screed section.   
     
     
         13 . The apparatus of  claim 12  wherein the bottom surface of at least one of the one or more central screed sections is curved.