In other words, it is a top-oil dispenser into the intake manifold to help the valves, guides and seals lube as well as adds top-oil into the gas/air mixer that gets down into the rings upon cycling!! And it works off intake manifold vacuum to boot..
I do know that the old Judson vane blowers needed to be lubed like this b/c they included an oil jar to feed oil into the air stream so that the tips of the vanes would be lubed and wouldn't wear off quite so fast as when ran dry..
Thanks everybody that chimed in here b/c I have ta say that I learned something that I didn't even know existed!!! pdq67
PS., and I wish that somebody would come out with a cheap, modern, vane tip/housing not touching blower like the old Judson b/c from what I have only read, they worked very well until they wore out...
I thought we had a cheap, roots type in the little extruded parts, K-F units but I don't even know just exactly if they are around under a different name or not?? Maybe Ken Bell???