A New Six-cylinder Row-crop Tractor A FEATURE of the new Oliver 70 row-crop tractor is
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the smooth-running six-cylindered power unit with which it is equipped. The model sold in this country is designed to run on heavy fuel, such as paraffin, and does so with every indication of perfect combustion, With this type of machine, which is becoming increasingly popular, the tools for cultivating between rows of growing plants are mounted on the tractor itself. A compact outfit results, and it is capable of turning, by the aid of differential brakes, in approximately its own length. The track between the rear driving wheels of the Oliver 70 is variable between 48 ins. and 72 ins., centre to centre, by sliding the wheels along a splined axle shaft, so that the machine can be accommodated to the requirements of a number of different crops.
The motor specification shows the bore and stroke to be 3* ins. and 41 ins, respectively, and the cylinders have removable nickel-iron sleeves. There is full-pressure lubrication to all main, connecting rod, camshaft and rocker-shaft bearings, a sealed but variable-speed governor, and a high-tension inductor-type magneto. The transmission provides for four forward speeds of 2.44, 3.32,4.33 and 5.88 m.p.h. at the normal governed speed of 1,500 r.p.m. Steel wheels or pneumatic equipment are available.
The machine is notable for its quiet running, ease of handling and adaptability for practically all farm purposes. The British distributor is John Wallace and Sons, Ltd., the Aerodrome, Hendon, and Paton Street, Glasgow. If desired, full electrical equipment for starting and lighting can be furnished as an extra.
A close-up of the new Oliver 70 row-crop tractor in which the cultivating tools are actually mounted on the machine.