Excerpt from Pattern Maker's Assistant, Embracing Lathe Work, Branch Work, Core Work The object of this book is to impart a knowledge of Pattern Making that shall be useful to apprentice Pattern Makers, and also to practical machinists, because the drawings of the designer do not as a rule give any instructions as to the construction of the patterns, while at the same time that construction ma affect to a considerable degree, the manipulations of the machinist. Furthermore, it often occurs in the experience of a general machinist, that he is required to make a pattern either in iron or wood, and the complete isolation which usually exists between the pattern shop and the machine shop, is an effective bar to the acquisition of knowledge by observation. The information is given from actual pattern shop practice, and in the ordinary workshop parlance. The tables have been selected with a view to a collection comprising all that the Pattern Maker of the widest experience requires; arranged for his convenience, although in as compact a form as possible. 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.