I have used Harold Taylor’s parts list for machine tools to construct an earlier type of milling machine, a classic Dutch windmill that milled grain.

The pair of multipurpose gears permitted a modest inclination of the sail axis.

Here is what I constructed with the addition of 48 more bolts 54 more nuts and to complete filling in of three sides, two more 2 1/2" x 1 1/2"; flexible plates.

The model reproduces all the essential features including the red wheels representing the grain grinder but not the extended framework for rotating the turret from the ground so that the sails face the wind directly. Nevertheless, the turret does rotate on a roller bearing using the two 2" pulleys.

I found that a washer lock-nutted at the outer end of the elongated hole in an angle bracket extended just enough to act as a roller.