Abstract: An insulated wall section for prefabricated buildings; a method of producing such sections that involves assembling, maneuvering and securing the component parts thereof together; and apparatus therefor that includes a table structure actuable to square and align assembled parts, and to compress self sustaining sheets of insulating material within spaces therebetween.

Abstract: A method of cutting logs which involves swinging a chain saw about a fixed pivot to bring the chain of the saw into cutting engagement with a log while the log is supported in an elevated position and restrained from lateral movement; together with an apparatus therefor which includes a table having a trough shaped log supporting top, and provided with a pivoted and adjustable mounting plate for the chain saw.

Abstract: A solar energy utilization system employing a glazed, insulated, collector box that houses a plurality of swingably mounted, conduit type, energy absorber assemblies; together with associated, arcuately shaped booster mirrors for collecting solar rays and reflecting them toward the absorber assemblies; and in which each absorber assembly includes an absorber tube provided with surrounding, overlapping, cylindrical baffles that may be said to function like iris diaphragms to control an aperture which receives the reflected rays.