Looking to identify this pump and how it works. The leather fits between the two disks--the holed disk is on the bottom ??. My guess is--1. when the lever is pushed down to bring water
into the cylinder--the water
flows past the leather (which I don't have and have never seen) 2. when one raises the lever the lever seals
against the solid disk and allows water out the spout. There is a one way valve in the base. I bought a leather from Lehmans but needs to be modified and I think it is too thick. Any thoughts?? Make my own leather out of thinner stock? It looks simple but...