Sugano, G.2,631,307 (1953) rotating knives uncap circular combs in the hiveKrause, I. J.
 

I found a You Tube video from Korea of a beekeeper using such a device.  A frame hold spinning uncapping 'brushes; the beekeeper set the  gizmo on top of super, uses a frame lifter to pull frame up and through the spinning uncappers.

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