A Trailer-mounted Purification Plant WIDELY used VY throughout the war
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by the British Army a trailer-type water purification . plant has now been made available by the Paterson Engineering Co., Ltd., 31, Windsor I-louse, Kingsway, London,' W.C.2. The. plant, which h driven by a two-cylindered air-cooled petrol unit, is capable of treating up .50 3,000 gallons of water per hour.
Mounted on the engine crankshaft 'and carrying the friction shoes and retaining springs, is the inner member of a centrifugal clutch. When engine speed reaches about 900 r.p.m. the shoes move outwards under centrifugal action, and engage with the rim of the outer member of the clutch, which is mounted on the pump shaft.
For sterilization, the chloramine (ammoniachlorine) process is used It is effective, but does not give an objectionable taste to the water. The engine used to drive the purification plant also provides the power to _ move the trailer from place to place. The complete unit is drawn as a trailer when it is necessary to move the plant long distarice:,..
Such a plant should prove of great -peace-time service on many farins throughout the country.