Patent ID: 7210211

Claim:
An apparatus for making temporary road mats comprising of at least an upper layer and a lower layer, one of said layers including laterally spaced, longitudinally extending timbers, another of said layers including longitudinally spaced laterally extending timbers, said timbers overlying at an array of vertical intersections comprised of longitudinally spaced lateral rows, said apparatus comprising: a frame member; an assembly support on which said timbers may be roughly assembled thereon into said layers with said intersections; a gang drill assembly supported on said frame member, said gang drill assembly carrying a plurality of drill units above said layers for drilling said lateral rows of intersections; means operatively associated with said frame member and said drill units for selectively aligning said drill units with said lateral rows and for downwardly moving said drill units to serially form aligned holes through said timbers at said intersections subsequent to which bolts are inserted into said holes above said timbers and fasteners are connected with said bolts below said timbers resulting in a bolted assembled mat.