Gear's illustrated catalogue of wood and iron working machinery (1872)
A.S. Gear, Gear, A. S · Boston : Printed at A.S. Gear's printing office, 62 Sudbury Street · leaf 465
The above cut shows the Self-Oiling Box, and Universal Joint by which it isattached to the Hanger. It will be seen that the Ball Joint is chambered, so as toreceive and contain a mass of sponge or other porous material, for the purpose ofabsorbing a large quantity of oil, holding it in readiness… … Q r.i,ln.,l ,u,, ,,/„„,/,■„,/ ,/ (riuirr-,.-, „i ll„ V, ,,!■),>? (l h 0 rTliviiuLs wUk (!< ihs (UKr Ill],, Drsh,, Urn li IlTilivSforniiSrnlli.n, Drsh/i „l .\r<, Y,,T
