Download or read book Upholsterers' Nails, Chair Glides, and Thumb Tacks, Finished Or Unfinished: Report to the President (Classic Reprint) written by United States Tariff Commission and published by Forgotten Books. This book was released on 2018-03-12 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Upholsterers' Nails, Chair Glides, and Thumb Tacks, Finished or Unfinished: Report to the President The head of the 1-piece tack is flat. A wedge-shaped slot is pierced in the head, and the pointed piece of metal thus formed is bent down and squeezed to form the shank. In tacks of the highest ade the shanks are then swaged between rollers to a finer point. T e higher grade 1-piece tacks are also casehardened. In 1931 approximately 40 per cent of the domestic tacks of this type were hardened. Metal strips (for the 1-piece tack) or blanks and steel wire (for the 2-piece type) are fed into automatic machines which produce the complete articles at the rate of approximately 80 a minute. 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.