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Jan., 1950.
HARDY : AGRICULTURAL ENGINEERING
Main Branch
13
The construction of a machine cannot always be shown to advantage when working in a field. Apart from having to contend with the inevitable layer of soil and mud, the lighting question often presents difficulties, especially when the important parts are right underneath the machines. For this reason record "films are sometimes made in studio conditions where lighting and subject can be more easily handled. This was done last winter with a series of sugar beet harvesters. Some of these were foreign machines of unusual design. One was on loan and others were the only models in this country at the time and so considerable care was necessary to make a full record. In view of the complicated mechanisms and adverse weather conditions, filming in the studio was the obvious solution.
Films in Testing
The Institute often receives reports of new ideas and machines developed by farmers themselves. Since it is not always possible to have the machine at the Institute for a full trial, an officer is sent to report on the machine and a short record film is made. A visual reference can then be kept at the Institute and looked at whenever the subject comes up for consideration.
Apart from being used merely as a record of the machine, the film is often included as part of the test procedure. One of the Institute's services is to make full commercial or confidential tests at the request of manufacturers, who
Fig. 2. Making a record film of a sugar-beet harvester. Although field shots are used to show the performance of the machine, soil, mud and bad light make it often difficult to show details of the mechanism.
ultimately receive a, full scientific report of the machine's performance. This report includes details of any faults and suggestions for modifications. As it is not always possible for the manufacturer to be on the scene when trouble is experienced with his machine or when modifications are made, a film is taken in order to illustrate these points to him in later discussion.
One particular instance was that of a tractor which had been fitted with a special bracket to prevent rearing when working on steep gradients. The