SURFACE TREATING APPARATUS

摘要

In surfacing apparatus for asphaltic surfaces and the like, there is provided a truck-drawn trailer, a hood and burner assembly having a hood suspended from the trailer open at the bottom that heats the surface over which the assembly is moved, a scarifying assembly supported by the trailer that breaks up the heated surface and a leveling device drawn behind the scarifying assembly that levels the broken surface material. The hood and burner assembly has a refractory lined combustion chamber with a sloping roof so that the combustion chamber decreases in volume toward the trailing end for heating uniformly, a joint gap between liner members that is wider at the top and top filled to retain a gap filler material, side sections that swing up to reduce the width for transport, side extension sections that optionally may be added for greater surface widths and separate controls for different banks of burners fro independent heat control of different sections of the hood. The scarifying assembly has alternating larger and smaller groups of scarifying elements arranged at spaced intervals across the apparatus with each group being independently resiliently urged into contact with the surface to adjust for surface irregularities. The scarifying assembly has side sections that swing up between an upper out of the way position and a lower working position. The leveling device has a channel member with a flat surface-engaging bottom and a curved moldboard front portion and drawing chain sections of adjustable length to level the scarified material.