Sectional example of sight feed lubricator

Sectional example of Bosch multiple force pump sight feed lubricator

This is a sectional example of the forced feed lubricator patented by Mr. E. Woerner in 1908, and subsequently improved by the makers. The lubricator can be used for all kinds of machinery, and is arranged to supply oil under pressure to from two to eight different points; each service has its own separate pump, and is provided with a sight-feed tube which is not under pressure. The oil supply is proportional to the speed of the machine, which itself drives the lubricator.