Original industrial trade vintage catalog for THOMAS GRATE BAR COMPANY.  Main office and plant was located at 4210 Tenth Avenue N, Birmingham, AL. WSD. Wiggle, Shake, Dump. Wiggling-Shaking-Dumping Grate Equipment for all types and sizes of fireboxes and furnaces, also for lime and brick kilns. Made from Graterlast, a metal that resists heat and assures long life at low maintenance cost. Unbound from a large 1931 industrial catalog, this unique old one page technical brochure would exhibit beautifully matted and framed. A fantastic addition to your retro industrial equipment collection. Slight damp stain on outer edge.