CHAPTER XIII

MACHINES

Quality of metal in rolls--Nature of roll-bearings--Brass liners--Liners of alloy or of cast-iron--Adequacy of machines --Arrangement of battery--Speed of machines--Gear ratios-- Grooving of rolls--Heating of rolls--Sheeting machines-- Lubrication--Trays--Position of battery--Drainage of battery-- Access to back of machines--Engines--Power 159