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Publication of GB382430ApublicationCriticalpatent/GB382430A/en
382,430. Capillary-action lubricating. GUINNESS, K. E. L., 10 Cadogan Square, Chelsea, London. Oct. 30, 1931, No. 30153. [Class 12 (iii).] A lubricating device for the actuating collar 27 of a pump plunger consists of a plug of felt 50 housed in a recess 49 communicating with an oil-hole 51.