Industrialization of the brewing process was greatly aided by machinery that processed barley malt in large quantities. Brewers' trade journals (like the Western Brewer, and Journal of the Barley, Malt, and Hops Trades, which began publication in 1876) featured not only pages advertising the latest commercially available machinery for weighing, lifting, malting, roasting, milling, drying, and brewing of barley, but also a section on recent patents issued for new designs of machinery. Barley malts are generally friable (easily broken into small fragments or powder) and mills like the one shown here used cylinder rolls to crush the malted grains.
Stopes, H. Malt and malting: an historical, scientific, and practical treatise, showing, as clearly as existing knowledge permits, what malt is, and how to make it. With full descriptions of all buildings and appliances, together with detailed definitions of every matter connected therewith, illustrated by 150 woodcuts, F.W. Lyon: London, 1885. Crerar TP587.S88