Excerpt from Elementary Projection Drawing: Theory and Practice, for Preparatory and Higher Scientific Schools; Industrial and Normal Classes; And the Self-Instruction of Teachers, Inventors, Draftsmen, and Artisans Constructions in Wood. General remark, . (Explanation of Scales.); Pairs of timbers whose axes make angles of 0 with each other; Combinations of timbers whose axes make angles of 90 with each other; Miscellaneous combinations. (Dowelling, &c.); Pairs of timbers which are framed together obliquely to each other; Combinations of timbers whose axes make angles of 180 with each other; Constructions in Metal, Cage valve of a locomotive pump. Metallic packing for stuffing-boxes, c, . Rolled-iron teams and columns, . Go Division III. Elementary Shadows And Shading. Chapter I. Shadows. I. Facts, Principles, and Preliminary Problems, . II. Practical Problems. (Twelve, with examples.), Chapter II. Shading, Hexagonal prism; cylinder; cone, sphere, and model. Division IV. Isometrical And Oblique Projections. Chapter I. First Principles of Isometrical Drawing, . Chapter II. Problems involving only Isometric Lines, Chapter III. Problems involving Non-isometrical Lines, . Chapter IV. Problems involving the Constriction and Equal Division of Circles in Isometrical Drawing, . Chapter V.Oblique Projections, . 106Division V.Elements Of Machines. Chapter I. Principles. Supporters and Crank Motions, . Pillow-block; standard; bed and guide-rest; crank; ribbed eccentric; grooved eccentric. Chapter II. Gearing, Spur-wheel; bevel wheels; screws and serpentines; worm-wheel. 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.