Elevators, Hydraulic and Electric

A Complete Hand Book Containing Full Descriptions and Illustrations of the Mechanism of All the Modern Types of Electric and Hydraulic Elevators; Also Instructions Regarding Their Care and OperationIn the Otis traction elevator the working parts have been reduced to the simplest possible elements. The elevator engine, a view of which is presented in Fig. 380,_consists essentially of a motor traction driving sheave, and a brake pulley, the latter enclosed with a pair of powerful spring actuated, electrically released brake shoes, all compactly grouped, and mounted on a heavy iron bed plate.Instead of the high speed motor used with the geared electric elevator, a slow speed shunt-wound motor designed especially for the service is used. The armature shaft which is of high tensile steel, of unusually large diameter serves merely as a support for the load, and on it are mounted the brake pulley and the traction driving sheave.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.