AN ENGINE WITHOUT OIL PIPES
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AN engine lubricating system in which the oil passages are cored in the crankcase casting, instead of being separately piped, is disclosed in patefft No. 580,619, by Crossley Bros., Ltd., and H. Carter, both of Openshaw, Manchester. Although described as applied to marine engines, the stheme is obviously not limited in his respect. The drawing shows a section of the lower half of a crankcase, and is sufficient to illustrate the principle. A cored passage (I) forms the pressure conduit
and is provided with branch passages (2) which lead to the main bearings. Drainage from the engine runs into a bottom channel (3), which leads to the sump. From the lowest point of the sump runs the outflow conduit (4) to the intake side of the pump. The pump and filters may be bolted on to the outside of the casing.