Table Of ContentMacmillan Engineering Craft Studies
Part 1 Basic Craft Studies
Mechanical Engineering Complement
General Editor H Spence
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Day and Time Room Subject Teacher
Macmillan Engineering Craft Studies
Part 1 Basic Craft Studies
Mechanical Engineering Complement
C E Comber G W Holmes J K Millington R Payne J B Pratley
Palgrave Macmillan
@1970
C E Comber G W Holmes J K Millington R Payne J B Pratley
All rights reserved.
No part of this book may be reproduced or transmitted,
in any form or by any means,
without permission.
First published 1970
Published by
MACMILLAN AND CO LTD
London and Basingstoke
Associated Companies in
New York Melbourne Toronto Dublin Johannesburg and Madras
ISBN 978-0-333-11269-4 ISBN 978-1-349-00925-1 (eBook)
DOI 10.1007/978-1-349-00925-1
EDITOR'S NOTE
This series of books meets the requirements of the new Counci1 of Technical and projects, rather than relying on conventional listening and note-taking.
Examining Bodies Craft Studies Courses. The texts are presented with great
clarity. The large format includes space for written work and sketches by the The technical studies of the Part 1 course, which extend over a year, are
student, thus reflecting the progressive nature of the new syllabus in which designed to suit both day release and block release students. The course
student participation is encouraged. consists of a common engineering syllabus of the basic elements applicable
to a number of engineering crafts, and an appropriate complementary
There are two important aspects of the new CTEB Engineering Craft Studies syllabus biased towards a particular trade or craft.
courses.
Together with the Engineering Base, this book contains all the material in
(a) They are specially designed for students undergoing planned training,
the Part 1 Mechanical Engineering course.
usually on programmes following the recommendations of the Industrial
Training Boards.
Henley College of Further Education
(b) They form the further education complement of industrial training, Coventry
involving the students in workshop and laboratory activities, investigations June 1970
ABOUT THIS BOOK
This book will become your own complete record of your progress. Important material is intended to be at a level which will neither bore nor overwhelm
facts are set out on the left-hand side of each page, and the right-hand side the student, but which will nevertheless demand an effort on his part. These
has space for you to answer questions and make extra notes and sketches. investigations are proposed at the ideal stage of the course but could well be
carried out as and when facilities are available. The books will become the
The practical investigations are spread throughout the book, but can be comprehensive record of the student's progress and will reflect his particular
carried out as and when equipment is available. By setting out the book in interests.
this way we hope to save you a lot of tedious note-taking and make your A great deal of space is available for extra teaching notes which you may wish
course more interesting. to give and for additional work by the students. These books cannot replace
the teacher but provide a framework within which he can present information,
ideas and principles in his own way. The authors already know how satisfying
this student-centred course can be and hope that you and your students will
NOTE TO TEACHER
find it equally rewarding.
Active student participation is encouraged throughout this series of books.
C. E. Comber
This approach will enable you to cover the large amount of material in the
G. W. Holmes
new syllabus by releasing, for productive and constructive work, time which
J. K. Millington
would otherwise be spent in note-taking.
R. Payne
J. B. Pratley
Information is presented in parallel with material for student activity: questions
to be answered and instructions for sketches and practical investigations. The
Contents
SECTION 1 Safety in the Workshop 2
SECTION 2 Measurement and Marking Out 12
SECTION 3 Engineering Materials 24
SECTION 4 Temperature, Heat, Friction, Lubrication 38
SECTION 5 Movement, Restraint and Location 58
SECTION 6 Material Removal 76
SECTION 7 Combination of Mechanical Operations 90
SECTION 8 Fabrication Processes 108
SECTION 9 Fastening and Joining 124
SECTION 10 Welding 132
SECTION 11 Principles and Application of Electricity 148
SECTION 14 Communication -Use and Interpretation of Drawings 158
SECTION 15 Workshop Calculations 184
The continuation of work started in the Engineering Base is indicated by* in the text.
SECTION 1
Safety in the Workshop
Personal safety and accident prevention
Movement of materials
Safe use of tools and machinery
Health hazards
Safety precautions when forging
PERSONAL SAFETY AND ACCIDENT PREVENTION
DRESS AND BEHAVIOUR*
Numerous accidents are caused by people not behaving sensibly in the workshop. The dangers are not always immediately obvious. The table below may take
some time to complete; perhaps months or even a whole year. Record the observations you make and include any others not listed.
Number of times and dates Machine or
Type of hazard Possible consequence of disregarding safe practice in each case
seen to occur situation
Talking to person operating
a machine
Leaving machine unattended
while it is running
Not using correct
gangways
Leaving equipment in
dangerous positions
MOVEMENT OF MATERIALS*
Go into the work area and see if overhead cranes, gantry cranes, pulleys, or other types of mechanical lifting devices are used to convey material from one place to
another. Inquire about the type and shape of material removed and the methods of loading, unloading and stacking.
Type of material Method of lifting (ropes, Routes usually followed; Safety precautions and suggestions
Lifting device
used for sling platform, hooks, etc.) i.e. over or around work area for improving methods
3
Examine the lifting slings used in the workshop. Required frequency B.S.
Type of tackle Markings Meaning of markings
There should be information stamped on them of testing number
or on a label. Note this and determine why
the information is put there. Refer to the
appropriate B.S. specifications for testing
(B.S. numbers 781,2902,3458,3481, 1290
and 2052).
PRECAUTIONS WHEN MOVING MATERIALS
When material or equipment is moved, proper care must be taken to avoid
causing accidents or creating hazards due to
1. careless slinging;
2. movement over an area in which people are working;
3. changes in floor level;
4. poorly maintained equipment.
Show where ropes should be positioned to correctly sling the crate in the
diagram.
If the rope is hemp and not already spliced and looped, what type of knot What faults would you look for in a hemp rope before using it? ............................ ..
should be used for slinging? .................................................................................................... .
What sort of deterioration may make wire rope unsafe? ......................................... .
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