Excerpt from Hand Book Describing Berloy Building Materials The basic idea of the use of Metal Lumber Joists and Studs according to the best authentic records was conceived by M. H. Crittenden and Frank V. Emery of Minneapolis, Minn, who ap plied for patents coverin'g the idea on April 3, 1893. The patent was granted to them on April 24, 1894 (no. A few years later extensive experiments and tests were made by The Berger Manufacturing Company under the direction of a Berger Engineer who is still with the company. These experiments and tests have established Metal Lumber, formed of pressed steel, theoretically designed and correctly de tailed, as a successful and practical method of construction. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.