Classic Railroad Signals

Classic Railroad Signals
Author: Brian Solomon
Publisher: Voyageur Press
Total Pages: 160
Release: 2015-02-15
Genre: Transportation
ISBN: 1627886397

Explore the history, quirks, and stories behind signals with gorgeous period and contemprary photography. Railroad signals are the link between the steam era and modern railroading. Designed for reliability and durability, signals can survive for decades. In fact, old semaphores installed during the early years of the twentieth century were still in service during the 1990s, protecting trains that were running with the latest modern diesels. Even searchlight-style signals that were the epitome of 1940s railroading continue to work today. Though standards were introduced in the early twentieth century, interpretation varied greatly among railroads, so even major railroads have individualized signals. Some, such as the Pennsylvania Railroad, were noted for their distinctive signaling hardware. Others lines became known for their peculiarities in practice. Classic Railroad Signals examines how different railroads developed specific hardware to serve their unique needs, in the process tracing the lineage of various types of hardware and highlighting how and where they were used. From nineteenth-century mechanical signals to disc signals, upper- and lower-quadrant semaphores, three-light electric signals, searchlight-style targets, positional lights, and color-position light hardware, author Brian Solomon covers nearly every conceivable piece of North American signaling hardware, even the virtually extinct wig wag that was once standard in California and Wisconsin. Gorgeous period and contemprary photography shows signals and trains from around North America. Classic Railroad Signals should be next to Railroad Signaling on every railroad fan's bookshelf.

The Consolidated Statutes of Newfoundland (Classic Reprint)

The Consolidated Statutes of Newfoundland (Classic Reprint)
Author:
Publisher: Forgotten Books
Total Pages: 1034
Release: 1919
Genre: Law
ISBN:

Excerpt from The Consolidated Statutes of Newfoundland Of storing gunpowder In the towns of St. Johns, Harbor Grace Carbonear, Of the St. John' s fire brigade. 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.

Observations Upon the Natural History of Epidemic Diarrhoea

Observations Upon the Natural History of Epidemic Diarrhoea
Author: O. H. Peters
Publisher: CUP Archive
Total Pages: 206
Release: 2018-02-06
Genre: History
ISBN:

Excerpt from Observations Upon the Natural History of Epidemic Diarrhoea The causative agencies from which springs the plentiful harvest of child mortality in large cities may be conceived as a felted mass of rootlets almost inextricably intertwined. Those of poverty, bad housing, bad feeding, and neglect, may be severally recognized, but the extent of their interrelations with actual respiratory and alimentary disease - those to which the greater part of the mortality is referred - can be traced only with difficulty. It is the object Of this work to aid ln the labour of cutting away the matrix and entangling fibres and to lay bare the hidden ramifications of at least one important causative agency - epidemic diarrhoea. This affection - if we accept provisionally the more novel and generally favoured conception. As to its nature - is revealed as something very like an ordinary infectious disease, and one which permeates all classes, while the excessive mortality it gathers round itself in urban centres must be regarded as something superadded, owing to the vicious circle it forms with those baneful conditions of slum life mentioned above. On the other hand, its peculiarly intimate association with the circum stances of domestic life, from the continual faecal pollution of the interior of the household by infants and others, tends to make it more so than other affections of the kind peculiarly a class disease, and an especial scourge of dirty neighbourhoods. Dirty towns may however be saved from excessive mortality by a high percentage of breast feeding. A notable point in the interesting comparison that can be drawn between diarrhoea and typhoid fever is that, in accordance with their peculiarly opposite age-incidence curves, the marked and habitual depositing of infectious excreta within the household in the former disease may make the question of water-closet versus conservancy pan a matter of far less importance than in the latter. 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.

Power Railway Signalling (Classic Reprint)

Power Railway Signalling (Classic Reprint)
Author: H. Raynar Wilson
Publisher: Forgotten Books
Total Pages: 354
Release: 2017-10-14
Genre: Technology & Engineering
ISBN: 9780266298816

Excerpt from Power Railway Signalling Chapter XVI. - accessories for automatic signalling. - Switch locks - Track-circuits for siding connections and crossovers - Insulating point rodding, &c. - Swit_ch indicators - Commutators - Switch instruments - Switch controllers - Relays - Signals for level crossings. 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.

Handbook of Research on Intelligent Data Processing and Information Security Systems

Handbook of Research on Intelligent Data Processing and Information Security Systems
Author: Bilan, Stepan Mykolayovych
Publisher: IGI Global
Total Pages: 434
Release: 2019-11-29
Genre: Computers
ISBN: 1799812928

Intelligent technologies have emerged as imperative tools in computer science and information security. However, advanced computing practices have preceded new methods of attacks on the storage and transmission of data. Developing approaches such as image processing and pattern recognition are susceptible to breaches in security. Modern protection methods for these innovative techniques require additional research. The Handbook of Research on Intelligent Data Processing and Information Security Systems provides emerging research exploring the theoretical and practical aspects of cyber protection and applications within computer science and telecommunications. Special attention is paid to data encryption, steganography, image processing, and recognition, and it targets professionals who want to improve their knowledge in order to increase strategic capabilities and organizational effectiveness. As such, this book is ideal for analysts, programmers, computer engineers, software engineers, mathematicians, data scientists, developers, IT specialists, academicians, researchers, and students within fields of information technology, information security, robotics, artificial intelligence, image processing, computer science, and telecommunications.