US3923255A - Vertical spindle pulverisers - Google Patents
A vertical spindle pulveriser including a housing structure in which a spindle, having a grinding disc attached near one end thereof, is vertically and rotatably mounted. A complementary grinding disc is fixed in the structure above the first disc, a compartment is formed in the structure about and below the discs, a receptacle is located below the discs and a feed hopper is provided …