mod. PLOT 375

Technical specifications
Small thresher, ideal for plots of land (hence the name), or small holdings.
As well as being ideal for the threshing of cereals (corn - barley - oats), it can be used with perfect results for rice, legumes (peas - beans - soya, etc.), small-seed plants (clover and so on), oil seed plants, garden produce, etc.
Its adaptability to so many different plant types comes essentially from its simplicity; the technical specifications which grant this are a regulation in the drum revolutions, and variation in the winnowing blower.
The machine can be mounted on four wheels, two of which are pirouetting. This is an ideal answer to the problem of working in one place or with small movements on compacted soil or in yards. It can also be mounted on two large tyred wheels and towed by means of a tow-bar.
The machine can be powered:

1. By a 2.2KW, three-phase electric motor, when work is in one place, and near a mains supply;
2. With an IM 300-type 6 HP four-stroke petrol engine.

The thresher, which has met with particular success, is highly desirable for the simplicity of its construction, ease of use, and - above all - complete lack of pollution when it passes from one product to another.
Threshing is delicate, thanks to a drum with rubber blades, and the cycle can be observed (even when the machine is running) thanks to transparent Perspex™ panels.
Production rates are a direct ratio of the size, and depend greatly on the skill of operators; output varies from 100 to 300 Kg per hour. To optimise output, it is a good idea two have two people: one to feed the machine, and the other to check the controls and change containers (for both finished product and waste).
The operator feeds the ears into the machine from the top, without leaving go, while the drum removes the seeds. When the operation is finished (there is a change in both the feel and the sound), the operator need only throw away the seeded ear and feed the next one in.
As can be seen, the inlet manifold is closed by a mobile panel (which stops any seeds coming back out) which opens when a product is inserted. In the event of difficulty, the operator can open it manually by sharply depressing the small lever to the left. This action eliminates residual waste or any ears which the operator has accidentally let go of.
The shelling operation inside the drum may be followed by looking through two transparent, semicircular doors. The operator will notice that the seeds, together with many tiny particles, move downwards towards the base, where there is a collecting bin. What happens is that the seeds, being heavier, collect at the bottom, while lighter particles begin to rise to the top, and are channelled over to the right where they end up in another bin.
This cycle is dependent upon a suction apparatus mounted on the rear: this creates a vacuum which draws in air from the left. The air thus carries all the particles which are lighter than the seeds which are being threshed. The vacuum can be regulated by a sheet metal diaphragm.