Original elevator trade vintage catalog for THE PATENT SCAFFOLDING COMPANY. Manufacturers of steel sidewalk bridges, Tubelox, safety swinging scaffolds and machines. Strong, fireproof, easily and economically erected and dismantled. Replaces wooden scaffolding which cause heavy loss by fire. Disbound from a large 1931 construction materials book, this unique old one page technical brochure would display wonderfully matted and framed. A marvelous addition to your retro construction equipment library.