Excerpt from Stationary Steam Engines: Especially as Adapted to Electric Lighting Purposes
The following pages were written at the request of the editor of the Electrician and Electrical Engineer, from the columns of which periodical they have been reprinted. It was desired that a concise, yet tolerably complete, account should be given of the changes which have taken place during the years which have elapsed since the modern steam engine began to find application in modern industries, and especially those which have been brought about by the demands of the last established of those industries - electric lighting - and which have been the result of unprecedentedly exacting conditions as to efficiency, regulation, and smooth action at high speed of rotation.
The subject was deemed to be of great importance to all mechanical engineers in any way connected with this latest department of their professional work; and it was desired that a systematic outline should be given of the history of the development of the now standard type of engine for "electric lighting plants" from the older, and still standard, types of stationary engine, in such form that readers should be able to compare the causes of such changes, with the modifications of construction and operation to which they have given rise. This the writer has endeavored to do, giving a philosophical account of this evolution of the later forms of engine, and of the stage to which it has progressed, while, at the same time, presenting correct descriptions of the forms and construction of representative machines. It has been his endeavor to do full justice to the several engines described, and he has carefully avoided the expression of merely personal opinion in regard to debatable points.
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