ClipArt ETC
"This machine consists of two vertical shafts, carrying radial arms. These arms pass each other in opposite directions, so that, in addition to a tearing action on the dough, which the knives have on passing each other, they have a screw action, pressing the dough down on one side and up on the other. The vessels containing the dough are made of wood, of an oval form, to correspong with the action of the machine." — Encyclopedia Britanica, 1893

Vertical Mixer

"This machine consists of two vertical shafts, carrying radial arms. These arms pass each other in opposite…