Today in 1900, US Patent 650377 A was issued, an invention of John F. Dornfeld, for his “Malting-Drum.” There’s no Abstract, though it’s described this way in the application:

The primary object of the invention is to provide, in a malting-drum, an improved construction for positively stirring the steeped barley contained in the drum, whereby the contents of the drum are properly stirred and mixed at all times.

A further object is to provide an improved means for introducing water into the malt whenever necessary in an even and regular quantity and in such manner that the water is thoroughly mixed with the malt.