Оглавление
James Lukin. The Young Mechanic
The Young Mechanic
Table of Contents
Preface
Chapter I
Chapter II
Chapter III
Chapter IV
Chapter V
Chapter VI
Chapter VII
Chapter VIII
HARD WOODS
ORDER AND ARRANGEMENT OF TOOLS
Chapter IX
POSITION OF CUTTING TOOLS
Chapter X
HOLLOWING OUT WORK
SCREWS AND TWISTS
Chapter XI
HARD-WOOD TURNING
TURNING BRASS AND OTHER METALS
THE SLIDE-REST
Chapter XII
Chapter XIII
WATT’S ENGINE
Chapter XIV
HOW TO MAKE AN ENGINE
THE SAFETY-VALVE
ENGINES WITHOUT SLIDE-VALVES EASY TO MAKE
THE DOUBLE-ACTION OSCILLATING ENGINE
Chapter XV
HARDENING AND TEMPERING TOOLS
HOW TO TEMPER TOOLS
Footnote
Отрывок из книги
James Lukin
Published by Good Press, 2021
.....
The method of constructing a simple box has been given in the first chapter, because so many other articles are made upon exactly similar principles. The rules laid down comprise two or three essential points, the neglect of which render the ordinary carpentry of boys so essentially bad. Foremost of these is the use of the square. There is no tool of more general use in the hands of workmen in wood and metal, and yet, generally speaking, either none at all, or a very faulty one is added to the collection of tools ordinarily supplied to boys. In the next place, I have insisted upon accuracy in measurement. The carpenter’s rule is not at all difficult for a young boy to understand; but even if he is not in possession of such at his first attempts, he should always be induced to work by measure of some kind. This causes him of necessity to exercise his mind as well as his hands, and teaches him to consider well at starting as to what he must allow for thickness of wood, the difference between inside and outside measurement, and so forth; all this will greatly conduce to his success, and consequently satisfaction in his work, and will lessen the chances of his beginning a number of articles and casting them aside unfinished—a propensity too common in all boys.
I shall now resume my directions in the first person, which I think is the more easy method both for master and pupil. The next specimen I propose, because it requires even more care than a box, but is at the same time perfectly within a boy’s powers, is a birdcage. Of these there are such a number of varieties that it is difficult to settle upon the best kind to begin upon. I think, however, a wire cage will on the whole be the easiest to construct, only you must take great care in boring holes in the thin strips of wood, and, indeed, if you can get a birdcage-maker’s awl besides the one you have, it will save both time and trouble. It is not made round with a flat end, but is three-cornered with a sharp point, so that it has three edges, and when it is carefully used and twirled round and round by the fingers in making holes, it will hardly ever split even very thin strips and pieces of wood. However, if you cannot get one never mind, you must use the common bradawl according to directions here given.
.....
