A Self-driven Centrifugal Oil Filter
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A CENTRIFUGAL oil filter which I-1 depends for its working on the pressure in the oil-circulating system, was announced on Wednesday by the Glacier Metal Co., Ltd., Alperton, Middlesex. Reference to the am-0m panying drawing, which shows the filter in diagrammatic form, will make its functioning clear.
The oil enters the filter under pressure and passes out of ports into a drum mounted on ball bearings. At the base of the drum is a number of nozzles arranged tangentially in relation to the drum axis.
As the oil is forced out of the nozzles the reaction causes the drum to revolve at high speed, the effect being that contaminants in the oil are flung out on to the interior of the drum.
A feature of this new filter, apart from its simplicity, is that, once installed, the only service called for is the periodical cleaning of the drum.
Albion Motors, Ltd., which has carried out extended tests of the filter, says that at least 25,000 miles of normal operation can be covered before atten tion is needed. Tests on an Albion 75 b.h.p. engine have shown that the whole contents of the sump will pass through the cleaner in about four minutes.