British standard. classification of pure mineral lubricating, oils. Publication No. 210-1924, Following the issue of the British standard specifications for fuel otis engines, the British Engineering Standards Association [has now published a B.S. classify pure mineral oils, This classification is intended to 'a broad guide to users of pure mineral lubricating oils to enable them to describe their wants in a more precise manner than ix now frequently do nye of the terms "light, hea plied to "Iubricatingg defined in terms of definite ranges of viscosity, thus amoving all doubt thal may exist the minds of users of oils as to whether these terms refer to. the viscosity or the specific gravity of the oil. Typical specifications for leuch type and grade of oil are given, Dut it ix not intended that. ther specifications should be uses as purchasing specifications. The class iffeation has been made under four main heads, as follows:
(a) Machinery and engine oils (pale oF red)
PO) "Internit-combustion engine its' Coale or red 1 ter Steam (ili Steam given indieat-
Heavy Oil Engine Fuel British Standard specifications for fuels for heavy-oil engines. (Petroleum and Shale Oils) (No. 209-1924).
These specifications are some of the first fruits of the Sectional Committee on Petroleum Products recently set up by the British Engineering Standards Association. Specifications are given for four grades of fuel oil, the first grade being " gas oil and the other three being non-distillate oils, sll classes of heavy-oil engines thus being catered for by one or other of the four grades. Users of heavy-oil essing Ao er a purpose the typical specification as
Text read from the printed page and cleaned; old type leaves the occasional error.