Download or read book Hydraulic Elevators Classic Reprint written by William Baxter Jr. and published by Forgotten Books. This book was released on 2018-03-23 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Hydraulic Elevators Vertical-cylinder elevators are generally geared from two to one, up to six to one, ratios Of three and four to one being, probably, the most common. Horizontal cylinders are seldom made of lower gear than six to one, and are frequently made Of as high gear as twelve to one. Fig. I shows, in perspective, the general arrangement Of a vertical-cylinder elevator geared four to one. The general arrangement of a modern vertical-cylinder, hydraulic elevator geared two. To one is shown in Fig. 2, p. 6. 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.
Download or read book Hydraulic Elevators written by William Baxter and published by . This book was released on 1905 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydraulic Elevators written by William Baxter and published by Forgotten Books. This book was released on 2017-10-16 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Hydraulic Elevators: Their Design, Construction, Operation, Care and Management The elevators so far considered are of the type known as low pressure, and are actuated with water pressures ranging between about 40 and 175 pounds per square inch. In the early days of hydraulic elevators the pressure was obtained by pumping water into a tank located upon the roof of the building, and as a column of water of one square inch cross section weighs about of a pound per foot of hight, the pressure seldom exceeded 50 pounds, and in many cases was as low as 30 pounds per square inch. With the advent of high buildings greater car speed was demanded, and this necessitated increasing the power of the elevator machine. This increase could be obtained in two ways, one by making the cylinder of larger diameter, and the other by increasing the pressure. As space in the buildings was valuable, the latter plan was adopted, and in order to obtain the increased pressure; a closed pressure tank was substituted for the open roof tank. The pressure tank had been used years before the time of high-power elevators, in buildings that were so low that the pressure obtained from an open tank on the roof was not high enough to keep the diameter of the cylinder within reasonable bounds; but from this time all elevators installed in high buildings were operated with water drawn from pressure tanks. The general introduction of the pressure tank resulted in an increase in the working pressure to from 75 to 100 pounds. By this increase the size of the cylinder, the tanks and the piping can be considerably reduced, with a corresponding saving in space and material. With the continued increase in the hight of buildings the pressure has been increased, so that at the present time it is common practice to use pressures up to 180 pounds and even a little higher. 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.
Download or read book Elevators Hydraulic and Electric written by Calvin Franklin Swingle and published by Forgotten Books. This book was released on 2016-10-08 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from 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 Operation In 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 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.
Download or read book Elevators written by John H. Jallings and published by Forgotten Books. This book was released on 2017-11-22 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Elevators: A Practical Treatise on the Development and Design of Hand, Belt, Steam, Hydraulic, and Electric Elevators Crossing stops within a foot or so of the proper place, we call them skilled drivers; when we watch the operators of our swift passenger elevators make stop after stop in rapid succession within an inch of the proper level, we realize not only the skill displayed but also the refinement of the operator's control over the car. Modern elevator service has improved so steadily with the de mands made upon it that we hardly realize the perfection which it has reached. From sidewalk lift of one story to the trying service of the Woolworth Building, every requirement either of load or of speed is met with an ease which is truly astonishing. Q The history of the development of the elevator is practically the history of the mechanical development of the age. Starting with the crude hand elevator which was confined entirely to the handling of freight, one feature after another was added either as the necessities of the service demanded it or as the mechanical improvement of our machines and mechanicians would allow it. The motive power received its share of attention - hand, steam, hydraulic, and electric motive power being perfected in succession. The two latter alone survived in rendering the difficult passenger service of the modern skyscraper, and in late years the popular favor has been almost wholly transferred to the electric type of elevator. But developments did not stop with the motive power for the complications of service demanded perfect control methods, automatic safety devices, proper car suspensions, and ease and smoothness of running. In the hydraulic type, the pilot valve, accumulator, and the high and low-pressure systems made this type of service extremely reliable. Wonderful progress has been also made in the electric type by the improvements in motor design, both direct and alternating; the perfection of the full magnet control; and the development of the traction type for high buildings. The push-button system of control, by means of. 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.
Download or read book Hydraulic Elevators written by Baxter William and published by . This book was released on 1901 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydraulic Elevators written by William Baxter and published by . This book was released on 1910 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydraulic Elevators written by William Baxter and published by Nabu Press. This book was released on 2014-02 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.
Download or read book Passenger Elevators Classic Reprint written by Thomas E. Brown and published by Forgotten Books. This book was released on 2017-10-24 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Passenger Elevators The machine was controlled by a brake acting on the guide strips. This elevator was not provided with any automatic con trolling devices, could move at great speed, and the passengers were entirely at the mercy of the operator. It soon fell into disfavor, and the field was left to the slower steam elevator. 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.
Download or read book Hydraulic Elevators Their Design Construction Operation Care and Management written by William Baxter and published by Legare Street Press. This book was released on 2022-10-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Hydraulic Elevators written by William Baxter and published by Scholar's Choice. This book was released on 2015-02-08 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Elevator Shaft Construction written by H. Robert Cullmer and published by . This book was released on 2015-07-01 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Elevator Shaft Construction: Or Practical Suggestions for the Installation of Electric Elevators in Buildings In preparing this book, it has been the object of the author to present the subject treated in such a manner as to make the details of practical value to an architect, builder, or a building superintendent representing either, having a general knowledge of the work in and about elevator shafts. The principal aim and purpose of the work is to emphasize the necessity of the co-operation of all parties connected with the work of elevator shaft construction and elevator installation to produce the best results and necessary economy. The articles on elevator shaft doors and machine rooms contain information which it is hoped will be highly useful to architects in preparing their plans. It has always been, and still is, a difficult problem to determine the height of an elevator shaft bulkhead. The article pertaining to this subject has been made quite comprehensive, and the plates conform to the requirements of existing municipal regulations. The data and information contained has been gathered by the author in his own practice and systematized and generalized for the purpose of this work. As far as he knows, such data has never before been published and it is his hope that it will prove of considerable value to all interested in the subject. The author is under obligation to Albert Bauer of Brooklyn, N. Y., for much competent assistance. Information and drawings for special subjects have also been furnished by the Reliance Ball Bearing and Hanger Co.; Burdett-Rowntree Co.; Peelle Co.; Elevator Supply and Repair Co.; Peterson Engineering Co.; F. T. Ellithorpe; and Oscar A. Norman for the frontispiece; to all of whom the author tenders his thanks for their freely given assistance. 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.
Download or read book Elevators Hydraulic and Electric written by Calvin Franklin Swingle and published by . This book was released on 1910 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tests of Elevators written by Harry Franklin Glair and published by Forgotten Books. This book was released on 2017-10-29 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Tests of Elevators: Thesis The Warner elevator is of the key and push button control type and is located in Lincoln Hall at the University of Illinois. When a passenger wishes to use the car he places his key in the wall switch, which is located at the side of the door. The elevator immediately comes to the floor where the passenger is located. The doors to the elevator shaft can only be Opened when the car is at that floor. The doors are all arranged with springs so that they close whenever released. When the doors at any floor are Open the car will not operate. As soon as the elevator reaches his floor the passenger enters, and the door closes behind him. The passenger then places his key in the switch on the wall of the car corresponding to the floor to which he desires to go. If the passenger makes a mistake or desires to change his destination, he pushes a stop button on the switchboard. He then places his key in the floor switch corresponding to his destination. 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.
Download or read book Elevator Service Classic Reprint written by Reginald Pelham Bolton and published by Forgotten Books. This book was released on 2017-10-29 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Elevator Service This travel has outgrown the extreme capacity of some of the best plants of elevators, and has indicated that, in spite Of great power and rapidity of operation, the passenger-carrying capac ity of an elevator actually decreases after a certain limiting point is reached, a condition which affects all types of elevators, and is the inevitable result of the combination of a certain num ber Of passengers with the number of floors to and from which they are carried. The important relation of elevator service to the success of all classes of buildings, renders it very desirable to determine the cause and character of this limitation, and to ascertain there from the best service which any elevator, or any combination of elevators, will afford, establishing an average or rated duty which may be adopted as a basis for the service to be expected from an elevator, or from any combination of units in an eleva tor service. The absence Of such a uniform definition Of the work of an elevator, has resulted in a confusing variety Of proportions, not only in the speed of the machines and in the size of the cars, but in the number of elevators of equal character applied to similar conditions of service. 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.
Download or read book Handbook on Engineering written by Henry C. Tulley and published by Forgotten Books. This book was released on 2016-09-16 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Handbook on Engineering: The Practical Care and Management of Dynamos, Motors, Boilers, Engines, Pumps, Inspirators and Injectors, Refrigerating Machinery, Hydraulic Elevators, Air Compressors, and All Branches of Steam Engineering The object of the writer in preparing this work has been to present to the practical engineer a book to which he can, with confidence, refer to for information regarding every branch of his profession. 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.
