In re Hornsey

The application in this appeal relates to a process of reducing iron oxide materials to metallic iron and involves the consideration of three claims, 2, 56, and 57, of which claim 2 is illustrative and reads as follows:

2. The process of reducing iron oxide materials to metallic iron without melting, which consists in first heating the ore in a state of division in an internally heated inclined rotating cylinder to approximately the temperature of reaction, in discharging the heated ore into a second, reducing, inclined rotating cylinder, introducing fuel into said second cylinder, and also…