Chapter XXI The Grinding of Tanning Materials
Primitive methods of grinding — The bell mill or coffee mill — Disc mills — Disintegrators — Carr’s disintegrator — Carter’s disintegrator — Adjustment of disintegrators — The Williams pulveriser — Myrobalans and Valonia crushers — Sawing mills — Shaving mills — Dyewood cutting machines — Screening of ground materials — Hatching of bark — Disintegrators and fire insurance — Dust from disintegrators — Chain conveyors — Belt conveyors — Vibrating conveyors PAGE 316