DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.25888#0011
PREFACE.
The Engineer and Machinist’s Drawing-Book was projected to supply a manifest want in educational
provision for the Workshop. The subjects upon which it treats were previously scattered through large
and expensive works, not accessible to the Working Engineer. Hence, the great body of intelligent
artificers who fill the manufactories of this country were, for the most part, dependent for their scientific
education on what may be termed the traditions of the Foundry and Engine-house.
It will be admitted that every person, in any way connected with the Mechanical Arts, ought
to possess a knowledge of the principles and practice of Drawing. Whether it be the inventor of
machinery, maturing his ideas; the originator, communicating with him who is to carry the long-
pondered design into effect by constructing the apparatus; the employer or manager, instructing the
workman; or the workman himself, receiving instructions from his overseer, or practically engaged in
forming the tool or the machine; each and all, in their several departments, ought to be able to draw
machinery with precision and accuracy. To the inventor, the employer, the overseer, such ability is
indispensable, as a first qualification for their various functions; but no less ought the workman to
be instructed in the Theory and Practice of Drawing, if he aspires to a higher position.
The Engineer and Machinist’s Drawing-Book is specially designed to supply the wants of
the above-named classes of individuals. Its object is to facilitate the representation of machines; to
popularize the understanding of their functions, and the action of their various parts; to afford a
sure and ready means for drawing, with perfect accuracy, machines already made; and also for working
out projected designs of all kinds of mechanism. The Work commences with the Construction and
Use of Drawing Instruments, in which not only the properties and applications of the ordinary
Drawing-case are fully illustrated and explained, but also those of many other instrumental and
mechanical aids which daily necessity has suggested to the mechanical Draughtsman. The succeeding
Section is devoted to Geometrical Constructions; and under the Drawing of Elementary Forms,
and an extensive series of general Problems, much valuable information is given in relation to figures
and curves of constant occurrence, as the bases and simple elements of the most elaborate Designs. A
third Section enters into the Drawing of Machinery by Ordinary Geometrical Projection, wherein
the first principles of Machine-drawing are perspicuously and minutely explained. A fourth Section
takes up the Drawing of Machinery, and leads the mechanical draughtsman, through all the details
of his art, from the drawing of a Nut-head or a Screw, to the complete Engine with all its appurte-
nances. To this section are added some useful remarks on Hand-Sketching and Drawing from the
object itself. The fifth Section is directed to the Drawing of Workshops, and whilst giving a general
example of these structures, it affords an elaborate instance of the method of preparing working drawings
of Workshops. The sixth Section, on the Projection of Shadows, is one of great importance, enabling
the Artist to give the true form and character of the shadows peculiar to the figures that are con-
stantly entering into his draughts and designs. The seventh Section offers very full instructions on
Shading and Shadows, and includes all the operations of Tinting, Shading, and Colouring, which
in their combination produce a useful, effective, and perfect drawing. The eighth, and concluding
The Engineer and Machinist’s Drawing-Book was projected to supply a manifest want in educational
provision for the Workshop. The subjects upon which it treats were previously scattered through large
and expensive works, not accessible to the Working Engineer. Hence, the great body of intelligent
artificers who fill the manufactories of this country were, for the most part, dependent for their scientific
education on what may be termed the traditions of the Foundry and Engine-house.
It will be admitted that every person, in any way connected with the Mechanical Arts, ought
to possess a knowledge of the principles and practice of Drawing. Whether it be the inventor of
machinery, maturing his ideas; the originator, communicating with him who is to carry the long-
pondered design into effect by constructing the apparatus; the employer or manager, instructing the
workman; or the workman himself, receiving instructions from his overseer, or practically engaged in
forming the tool or the machine; each and all, in their several departments, ought to be able to draw
machinery with precision and accuracy. To the inventor, the employer, the overseer, such ability is
indispensable, as a first qualification for their various functions; but no less ought the workman to
be instructed in the Theory and Practice of Drawing, if he aspires to a higher position.
The Engineer and Machinist’s Drawing-Book is specially designed to supply the wants of
the above-named classes of individuals. Its object is to facilitate the representation of machines; to
popularize the understanding of their functions, and the action of their various parts; to afford a
sure and ready means for drawing, with perfect accuracy, machines already made; and also for working
out projected designs of all kinds of mechanism. The Work commences with the Construction and
Use of Drawing Instruments, in which not only the properties and applications of the ordinary
Drawing-case are fully illustrated and explained, but also those of many other instrumental and
mechanical aids which daily necessity has suggested to the mechanical Draughtsman. The succeeding
Section is devoted to Geometrical Constructions; and under the Drawing of Elementary Forms,
and an extensive series of general Problems, much valuable information is given in relation to figures
and curves of constant occurrence, as the bases and simple elements of the most elaborate Designs. A
third Section enters into the Drawing of Machinery by Ordinary Geometrical Projection, wherein
the first principles of Machine-drawing are perspicuously and minutely explained. A fourth Section
takes up the Drawing of Machinery, and leads the mechanical draughtsman, through all the details
of his art, from the drawing of a Nut-head or a Screw, to the complete Engine with all its appurte-
nances. To this section are added some useful remarks on Hand-Sketching and Drawing from the
object itself. The fifth Section is directed to the Drawing of Workshops, and whilst giving a general
example of these structures, it affords an elaborate instance of the method of preparing working drawings
of Workshops. The sixth Section, on the Projection of Shadows, is one of great importance, enabling
the Artist to give the true form and character of the shadows peculiar to the figures that are con-
stantly entering into his draughts and designs. The seventh Section offers very full instructions on
Shading and Shadows, and includes all the operations of Tinting, Shading, and Colouring, which
in their combination produce a useful, effective, and perfect drawing. The eighth, and concluding