the next few shots show the first knee raising method. this was replaced later as I was not happy with it. It also shows a spindle that was later replaced with one with less run out and larger bearing centres. With this knee raising method the force is off centre and so the knee crabbed slightly and required a lot more force to raise the knee.
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you can see the original handle at the back of the mill that was used to raise and lower the knee. If you look at some of the previous posts you can see the rack on the knee. The handle is connected to a pinion that meshes with the rack. I replaced the handle with a bike chain wheel and a bike chain with weight attached is used to counterbalance the knee. I have just realised that I do not have any pics of this so I will ahve to go and take some.