Preface
In the final analysis, that organization is best that has the best quality of workers. No organization can continue to be of first quality whose workers are over-fatigued. Other things being equal, that country will be most happy and most successful whose workers have the least unnecessary fatigue.
Aside from the pleasure one may obtain from it, it is the duty of every one to eliminate the causes of unnecessary fatigue, and to promote the dissemination of knowledge of how to recover most quickly from unnecessary and necessary fatigue.
Fatigue study rests on scientific investigation that requires the special training of an expert, and laboratory methods and equipment; but there are elementary methods of studying and eliminating fatigue that are not only so simple that any. one can understand and apply them, but that are also a definite stage in the preparation of the fatigue study expert.
PREFACE
It is the aim of this book to outline both these preliminary methods and the scientific methods of fatigue elimination and to put the available material for fatigue study into such shape that any one interested may make immediate, definite, and profitable use of it.
Chapter. I
A DESCRIPTION AND GENERAL OUTLINE OF FATIGUE STUDY : WHAT MUST BE DONE
PAGE
Fatigue Study and Waste 3
What Fatigue Is 4
What Fatigue Study Is 7
The Field of This Book 7
The Relation of Fatigue Study to Measueed Functional Management 9
Relation of Fatigue Study to Motion Study ... 11
The Classes of Fatigue 13
The Peoblems of Fatigue Study 14
The jNIethods of Fatigue Study 14
Emphasis in Fatigue Study 15
Chapter II The Fatigue Survey : What Is To Be Done
What a Survey Is 18
The General Suevey and the Fatigue Survey . . 19
The Aims of the Fatigue Subvey 19
The Time and Place of Making the Survey ... 20
The Qualification of the Subvey Makeb .... 22
What to Look Foe 25
Variables That Affect Fatigue 29
The Subvey Recoed Sheet 30
Survey Photogbaphs 31
Making the Subvey Serviceable 32
Chapter III
PRELIMINARY PROVISIONS FOR REST FOR OVER- COMING FATIGUE: W^HAT CAN BE DONE NOW
Peovision fob Rest 38
CONTENTS
PAGE
Chairs to Make the Rest Most Effective .... 42
Betterment Wobk 47
RESUIiTS 49
Chapter IV Home Reading Box Movement: A Prac- Tical Illustration
What It Is 54
The Bos in the Plant 55
The Plant as a Souece of Supply ...... 55
The Home Element 58
Routing the Magazines 61
The Problem of Maintenance 63
How the Conditions Vaby 67
The Home Reading Box and Fatigue 69
The By-Peoducts of the Home Reading Box Movement 70
How to Begin . ; '^^
Chapter V Preliminary Fatigue Elimination: What Can Be Done Now
The Lighting Problem 77
The Heating, Cooling, and Ventilating Problem . . 82
Fire Protection 84
Safety Protection 85
The Work Place 88
The Work-bench or Table 90
The Chair or Other Fatigue-Eliminating Device . . 91
Placing the Material Worked On 93
The Placing of Tools and Devices 94
The Clothing of the Worker . 95
Chapter VI The Fatigue Museum: An Object Lesson
What a Fatigue Museum Is 99
The Parent Fatigue Museum 100
What the Fatigue Museum Contains 102
What the Museum Does not Contain 102
CONTENTS
PAGE
Types of Chaibs and Their Uses ....... 104
Other Fatigue Eliminating Devices 108
How TO Use the Devices 109
Starting Your Own Fatigue Museum Ill
Chapter VII Fatigue Measurement : How To Attack The Problem Scientifically
History of Fatigue Measurement 114
Fatigue, a Test of Efficient Activity 116
The Activity 117
Motion Study, Micromotion Study, the Cyclegkaph, AND the Chronocyclegraph Method as Measures
OF Activity 118
Testing the Work by Motions Required 123
Testing Workers by Motion Capabilities .... 124 The Use of Activity Records as Data for Eliminating Fatigue .... 124
The Time Element 125
The Standardization of Work and Rest .... 127
Chapter VIII
MAKING ADJUSTMENTS: HOW PRESENT PRAC- TICE IS DEVELOPED INTO STANDARD PRAC- TICE
A Concrete Example of Making Adjustments . . . 132
Former Method of Assembly 133
How the New Practice Was Derived 134
The Two Factors to Be Considered 134
Outline of the Changes to Be Made 135
The Solution of the Problem 135
Final Adjustment 139
Changes in Type of Work Demanded 140
Change in Mental Attitude 140
Value of This Example 140
Chapter IX The Outcome: How Far Have We At- Tained Our Aim?
The Tests of General Health 142
CONTENTS
PAGE
The Test of Prolonged Activity 143
The Test of Posture 144
The Test of Behaviour and Implied Mental Attitude. 146
The Test of Transference of Skill 148
Test of " Happiness Minutes," Individual and Social 149
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