object of this work is to furnish House Carpenters with the
practical directions necessary to find the lines for cutting
every description of joint, as well as for framing the most
difficult roofs, according to a new and easy system, founded
on accurate geometrical principles.
For more than twenty years, the author has applied the rules
here laid down, to the framing and connecting of timbers; to
the framing and constructing of roofs; to the mitering of
planes and irregular surfaces at any angle; to the mitering
of circles, and to finding the joints in every variety of
splayed work; also to the elevations of the frame work of
roofs, and to ascertaining the relative sizes required to
support a given weight.
Together with these rules, the author also presents tables
of the weight and cohesive strength of the different
materials used in the construction of buildings, as well as
the weight required to crush said materials. And to all this
is added a complete treatise on mathematical instruments.
There can be little doubt that a work of this kind is very
much needed by carpenters and builders, especially by those
who are inexperienced in the different kinds of labor which
they are liable to be called upon to perform. Many a
journeyman carpenter has found himself suddenly thrown out
of employment, simply because he was ignorant of the rules
by which he should perform some required task. It is rather
for the benefit of such, than for the experienced workman,
that this volume is designed; and should it be the means of
promoting their interest, or inciting them to a study of the
noble science upon which these arts are founded, the author
will feel well compensated for his labor.
It is but due to acknowledge, that the valuable works of Mr.
Peter Nicholson and Thomas Tredgold, have been freely
consulted in the preparation of this volume.
Newark, N. J, May, 1863.