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following scene should be shown is in its turn indicated in the intermediate title and on this point other indications are given, so that the spectator is unaware which of these speeds the operator will adopt at a given moment. Each spectator must then state whether each particular photograph has been shown at a normal speed or too slowly, and from the opinions expressed the correctness of the judgment of the employees assigned to the study of working-time may be gauged.
The Influence of Skill {Peeling Potatoes) :
This film shows potatoes being peeled as an example of the fact that — since this process does not involve any exercise — a whole lot of unnecessary movements are made in work, which may be eliminated by a little skilfulness. Two persons are photographed simultaneously : one is shown peeling potatoes for the first time; the other displays considerable skill at the work. The film clearly shows how the first is labouring with his whole body, while the other uses his hands only.
The proper way to burn Wood in the Home :
This film is intended for exhibition in Sweden : it illustrates the rational handling of the different kinds of stoves in use in Sweden for burning wood. First of all, the economic importance of a proper system of woodburning is stressed in a series of scenes. Certain rules are then set forth : such as the advantage of disposing the wood horizontally rather than vertically, the closing of the stove, kindling the fire, etc.
Other photographs illustrate the rules applicable to kitchen stoves, as well as the changes which are desirable in these : decreasing the fire space and the construction of an efficient smoke register.
Final Measurements :
This film illustrates the use of special lathes with the use of final parallel measurements. This is compared with work done on old fashioned lathes which require the constant repetition of operations and the turning of parts, which involved unnecessary loss of time. The new lathes do away with all this by the introduction of final parallel measurement. The lathe stops automatically as soon as the desired measurement is attained. Any measurement required can easily be obtained. A comparison is shown of the times taken over the same job of work by an old fashioned lathe and by this new system.
A Study of Fatigue by means of the Kaiser Wilhelm Ergograph :
The scenes shown reproduce certain experiments made with the finger ergograph. The manner in which the fatigue curve is formed is also shown.
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