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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VARIABLES OF THE SURROUNDINGS 63
flee that their one union may make in the world’s en-
deavor to reduce the cost of living generally, is not properly
offset by having any one trade or any one locality practic-
ing intensive outputs. A few practical object lessons of
the general increase in business resulting from higher
wages and simultaneously created lower-production costs
will, however, always convince the most prejudiced be-
liever in artificially restricted maximum outputs.
The compensat’on of workers will not be discussed here,
although the basis of compensation does affect motions.
Weight of Unit Moved
Generally speaking, the weight of the unit moved is of
three kinds:
1. The weight of that part of the body that is moved.
2 The weight of a tool used, such as a hammer or
a trowel.
3. The weight of material used, such as a brick, or
the mortar on the trowel.
Other things being equal, the less of the body moved the
less fatigue.
The weight that the tool should be is determined by
the use of the tool. In the case of a sledge hammer, in-
creased weight means increased efficiency. A twenty-five
pound sledge might break a block of granite in halves
in five blows, while a ten pound hammer might require
one hundred blows. In the case of a trowel, increased
weight means decreased efficiency. 1 he heavier the trowel,