An Introduction to Machine Drawing and Design. David Allan Low
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David Allan Low
An Introduction to Machine Drawing and Design
Published by Good Press, 2021
EAN 4057664594303
Table of Contents
MACHINE DRAWING
DESIGN
DAVID ALLAN LOW
MACHINE DRAWING AND DESIGN.
XVII. MATERIALS USED IN MACHINE CONSTRUCTION.
XVIII. MISCELLANEOUS EXERCISES.
SCIENCE AND ART DEPARTMENT, SOUTH KENSINGTON.
Syllabus.
EXAMINATION PAPERS SET BY THE SCIENCE AND ART DEPARTMENT.
SCIENTIFIC CLASS-BOOKS.
LONGMANS' ELEMENTARY SCIENCE MANUALS.
AN INTRODUCTION
TO
MACHINE DRAWING
AND
DESIGN
BY
DAVID ALLAN LOW
(WHITWORTH SCHOLAR), M. INST. M.E.
HEAD MASTER OF THE PEOPLE'S PALACE TECHNICAL SCHOOLS, LONDON
AUTHOR OF 'A TEXT-BOOK ON PRACTICAL SOLID OR DESCRIPTIVE GEOMETRY'
'AN ELEMENTARY TEXT-BOOK OF APPLIED MECHANICS' ETC.
FOURTH EDITION
LONDON
LONGMANS, GREEN, AND CO.
AND NEW YORK: 15 EAST 16th STREET
1890
PRINTED BY
SPOTTISWOODE AND CO., NEW-STREET SQUARE
LONDON
PREFACE.
It is now generally recognised that the old-fashioned method of teaching machine drawing is very unsatisfactory. In teaching by this method an undimensioned scale drawing, often of a very elaborate description, is placed before the student, who is required to copy it. Very often the student succeeds in making a good copy of the drawing placed before him without learning very much about the object represented by it, and this state of matters is sometimes not much improved by the presence of the teacher, who is often simply an art master, knowing nothing about machine design. It is related of one school that a pupil, after making a copy of a particular drawing, had a discussion with his teacher as to whether the object represented was a sewing machine or an electrical machine. Evidently the publisher of the drawing example in this case did not adopt the precaution which a backward student used at an examination in machine design: he put on a full title above his drawing, for the information of his examiner.
Now,