Excerpt from Definitions of Revised Classes and Subclasses of Subjects of Invention in the United States Patent Office: Arranged in Numerical Order; A Supplement to the Manual of Classification; Revised to January 1, 1912 For staple-forming machines, search class 59, chain, staple, and horseshoe making, subclass 71, Staple making, and the subclasses thereunder. For features of staple setting and riveting machines, search should also be made in the various subclasses in class 218, button, eyelet. 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.