. . "Automatic lubricator" . . . "displacement lubricator" . "Automatic lubricator" . "Automatic lubricator#Displacement lubricator" . . "Automatic lubricator#Wakefield lubricator" . "Detroit Lubricator" . "mechanical lubricator" . . "Wakefield mechanical lubricator" . . . . "automatic locomotive lubricator" . "lubrication of steam locomotives" . "automatic lubricator" .