Farrel-Birmingham

Hard rubber is one of the few combustible materials which is generally ground on heavy steam-heated rollers. The raw material passes to a series of rolls in closed circuit with screens and air classifiers. Farrel-Birmingham rolls are used extensively for this work. There is a differential in the roll diameters. The motor should be separated from the grinder by a fire wall. 

FIG. 11-56 Heat-transfer equipment for fusion of solids, (a) Horizontal-tank type. Courtesy of Struthers Wells Corp.) (Z )Agitated kettle Courtesy of Reud-Sta mard Division, Capital Products Co.) c) Double-drum mill. Courtesy of Farrel-Birmingham Co.)... 

The Banbury mixer prospered through the 1920s, but not the Wanning family that owned the Birmingham Iron Foundry. In 1927, it was merged with Farrel Foundry and Machine to form Farrel Birmingham (later Farrel Inc.). They continued to manufacture the Banbury mixer [30]. 

In 1927 the Birmingham Iron Foundry merged with Parrel Foundry and Machine. This was caused by health problems of F. D. Wanning. The merged firm was called Farrel-Birmingham [19, 28]. The Parrel Internal Masticator was discontinued and the Banbury Mixer was emphasized. 

Following World War II, Farrel-Birmingham (which renamed itself Farrel Inc. in 1963) developed new licensees. In Italy they licensed Pomini SpA in Castellanza (near Milan). A new company, Pomini-Farrel SpA was to manufactiue Banbury mixers. In Japan a license was given to Kobe Steel of Kobe. Both licenses began in 1965 and lasted until 1985. 

Ball AP, Hopkinson RB, Farrell ID, et al. Human botulism caused by Clostridium botullnum type E the Birmingham outbreak. Q J Med. 1979 48(191) 473—491. 

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