The one set of 36" French Burr stones at Burton Mill were installed in 1979 and came from a derelict mill in Wales. These stones are mounted on a concrete upstand as the building is now too weak to support stones as they were originally arranged on the first floor. Drive comes from the main line shaft via a 10m belt.
Arrangement of the bevel drive with a view of the underside of the bed stone. The dilapidated flour grader is seen on the left.
Top view of the bed stone with the damsel resting on the spindle
The centre or eye of the bed stone. A barrier should be fitted between the top of the stone and the collar to prevent the grain sitting in the pit and blocking the spindle bearing.
The stones are badly worn and have been run out of balance leaving regions of polished stone
View of the underside of bed stone. The spindle is located in the bed stone by two brass shims (fitted from above) and one wooden wedge. The wedge is held in place by the string so it can be removed for oiling the bearings(?).
View of the top of the spindle with the crown removed. The large slot in the crown engages with the rynd to rotate the runner stone. The two brass shims have been pushed out from underneath and show some wear. Owing to the lack of a cover the spindle was almost seized with dust and grain.
Bevel drive gears with runner stone height adjuster (red wheel)
Main thrust bearing. Four bolts centre the bearing relative to the bed stone to align the spindle vertically.
Driven bevel gear lifted clear of the bearing
Bearing cup with the positioner