Εικόνες σελίδας
PDF
Ηλεκτρ. έκδοση

THE

PRACTICAL EXAMINATOR

ON

Steam and the Steam Engine:

WITH

INSTRUCTIVE REFERENCES RELATIVE
THERETO.

ARRANGED FOR THE USE OF

Engineers, Students, and Others.

BY WILLIAM TEMPLETON,

ENGINEER.

PHILADELPHIA:

HENRY CAREY BAIRD,

INDUSTRIAL PUBLISHER,

No. 406 WALNUT STREET.

JUN 26 1917

TRANSFERRED TO

MANYARD COLLEGE LI KARY

150.22

PREFACE.

THE following pages were not originally written with a view to publication, but merely intended as a private means, simple and concise, by which to impress upon the author's mind necessary available facts relative to steam and the steam-engine.

Promiscuously, however, in support of assertion educed by argument, in company of engineers, the manuscript was appealed to, the consequence of which was an eager expression of belief that, seeing the benefits to myself, the work might be equally useful to them and others, provided it were submitted to publication. To this I felt exceedingly reluctant, because of the peculiar mode I had selected for individual purpose. My reluctance, however, was ultimately overcome by the consideration.

of the possible utility of the work to prac tical men entering either the naval or the commercial service as engineers, for which appointments a competent knowledge of steam and the steam-engine is, by examination, now imperatively required.

Having thus far explained my reasons. for writing, and also for publication, I have only further to add, that the matter, although not altogether original, yet, in its simplified and condensed form, for constant and immediate application, will be to many of more real value as a text-book and ready prompter, which practical emergencies so frequently require, than a more elaborate work, increased in magnitude by elementary research.

The first edition was sold off in an incredibly short space of time, and a second edition solicited, with augmentations for more general purposes; in compliance with which demand I have carefully revised the whole, and made considerable additions, so

as to render the work more generally useful to the practical engineer, by assisting the memory in matters relating to steam-engines for land purposes or marine navigation, and also by affording valuable information to students of other classes, who have to acquire a similar knowledge by command or otherwise.

The utility of the work is also much enhanced by the addition of enlarged tables of various descriptions for practical reference, by which time in calculation is saved, and uncertainty much diminished; hence the work will be found to comprehend numerous rules, practical observations, and tables of merit, arranged in the most explicit form that individual ingenuity could studiously devise.

LONDON, August, 1852.

« ΠροηγούμενηΣυνέχεια »