Excerpt from Details of Building Construction This illustration shows our patented method of fastening the shank to the head of the knob. Before inserting the shank the flat metal key is down to the end of the slot and even with the end of the shank. After the shank has been screwed into its place the key is forced partly into the wood and locks the shank. Every knob is warranted not to get loose or give out in any way. 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.