3002. ------. [RUHRCHEMIE A. G.] [Process and Apparatus for the Determination of the Oxygen Stability of Lubricating Oils.] German Patent Appl. --, R 716, filed May 18, 1944.

PATENTS

3002. ------. [RUHRCHEMIE A. G.] [Process and Apparatus for the Determination of the Oxygen Stability of Lubricating Oils.] German Patent Appl. --, R 716, filed May 18, 1944. FIAT Reel K-30, frames 7,805-7,809; PB 73,587.

Describes electrically heated vessel provided with feed and drain pipes for aging medium and cooling agent. The O₂ stability is determined by the amount of reaction heat, calculated from the amount of cooling agent required to carry it away.