Motion Study
A Method for Increasing the Efficiency of the Workman
Forfatter: Frank B. Gilbreth
År: 1911
Forlag: D. Van Nostrand Company
Sted: New York
Sider: 116
UDK: 658.54 Gil Gl.
DOI: 10.48563/dtu-0000026
With an Introduction by Robert Thurston Kent Editor of "Industrial Engineering".
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24
MOTION STUDY
Fatigue is due to a secretion in the blood.
To quote from an article signed “ I. M. T.” in the
American Magazine for February, 1910:
“The toxin of fatigue is the phrase the physicians have
given us with which to jar the attention of those who can
only be stirred by harsh words. It has been demon-
strated in the last few years that fatigue is due to an
actual poison not unlike the poison or toxin of diphtheria.
It is generated in the body by labor. But the system
takes care of itself and generates enough anti-toxin to
take care of a normal amount of toxin or poison. If it
continues to be produced in abnormal quantities the sys-
tem cannot grapple with it. There is a steady poisoning
of the body, with all the baneful effects, mental and moral,
as well as physical, that poison produces.”
Continuous hard work, however, like proper training, puts
the body into that condition that best overcomes fatigue.
Fatigue is due to three causes:
1. Fatigue due to coming to work improperly rested
(fatigue brought to the job).
2. Unnecessary fatigue, due to unnecessary work, un-
necessary motions, or uncomfortable positions, surround-
ings, and conditions of working.
3. Necessary fatigue, due to output.
Every motion causes fatigue. The same motions in
the same trade cause about the same fatigue for all first-
class men, and they all require about the same amount of
rest to overcome fatigue, provided their habits and mode
of living are the same outside of working hours.