The Boilermaker's & Iron Shipbuilder's Companion ...

OF THE UTMOST UTILITY TO PERSONS INTERESTED IN
THE IRON TRADES.

E. & F. N. SPON, 48, CHARING CROSS.

LIVERPOOL:

J. THOMAS, 200, SCOTLAND ROAD.

1869.

PRINTED BY J. THOMAS, SCOTLAND ROAD, LIVERPOOL.

PRE FACСЕ.

IN presenting this work to the practical Boilermakers and Iron Shipbuilders of Great Britain and Ireland, I hope they will study it with attention, to enable them to become acquainted with the elucidations of the practical examples which are given in the observations accompanying each section, as it is the result of my leisure hours, and has been accomplished by the aid of the lamp after the labours of the day, and is a humble effort to remove many difficulties under which they have laboured for the want of a more general knowledge of the practical part of their business.

The purport of the work is to impart knowledge to all those requiring it; because the value of mechanical science is most appreciated on account of the ease with which the workman can perform and lay out his work in a practical and scientific

manner.

In the various rules and examples given in the work, I have taken care to present them in the most simple manner, so that there may be nothing discouraging by any unnecessary display of formulas. All may understand who are familiar with the four rules of arithmetic-Addition, Subtraction, Multiplication,

Some men, of contracted minds, think it unwise to

impart a general knowledge of business to all-but I think otherwise. The practical man should be learned in all things relative to his trade, to enable him to do and finish a piece of work in a business-like manner.

I have given in the work all the requirements for constructing templates for cylindrical boilers, consisting of conic frustums, egg-end boilers, domes, barrels, &c., and I hope that my humble efforts will be appreciated by those workmen who are employed in the construction of them.

In conclusion, let me remind the practical man that the science of mechanics is the greatest of all sciences; it teaches the mind to think correctly, and produces that intellectual enjoyment which no other study can impart.