A Handbook of Engine and Boiler Trials, and of the Indicator and Prony Brake.: For Engineers and Technical Schools.

This little treatise on methods of testing engines and boilers is an attempt to meet what has seemed to the Author a longexisting want. Hitherto, every engineer doing work of this kind has been compelled to do that work without a standard of reference, and the results of trials of engines and of boilers which have found their way into the record have been presented in such various ways as to be difficult of comparison, and such as to offer to the engineer desiring to do his work in an acceptable and permanently useful manner no generally accepted criterion. But the work of a committee of the American Society of Mechanical Engineers, of the German engineers, and of one or two individual and recognized authorities among experts, at later dates, has led to such a general concurrence among members of the profession that it is now possible to at least provisionally oflfer a system of testing both engines and steam-generators that may be accepted as satisfactory. That this system will be steadily and constantly improved cannot be doubted, and the methods in vogue among the best practitioners to-day will not be precisely those in use among such experts a year hence; but the processes now adopted most generally will probably only be modified in detail, and the improvements will now mainly consist, it may be safely presumed, in the application of the most recent and accurate methods of precise measurement, as customarily applied in laboratories, to the determination of the quantities sought in such trials. The main outline of the scheme of trials to-day will be the substantial representative of similar operations later.
(Typographical errors above are due to OCR software and don't occur in the book.)

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