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 445
iling Journal Bearingof my improved Fan and Pressure Blower. It will be seen that the Ball Joint is cham-bered, so as to receive and contain a mass of sponge or other porous material, for thepurpose of absorbing a large quantity of oil, holding it in readiness and supplying it asmay Ije wanted, to… … I 2 8? 5|
