The Iron and steel magazine . lworking heat All walls should be bound at the ends. Rolledshapes should be used whenever possible. Skew backs of allarches should be braced by the binding, particularly those ofthe roof. In the regenerator chambers the ends of all outside orpartition walls should be bound, as should the ports, because thebrick expansion may cause leaks and permit ignition of the gasbefore it reaches the working body of the furnace. Study wellthe conditions of subsoil at selected site before putting in foun-dation. Foundations should be of rigid and of first-class ma-sonry, to gua
The Iron and steel magazine . lworking heat All walls should be bound at the ends. Rolledshapes should be used whenever possible. Skew backs of allarches should be braced by the binding, particularly those ofthe roof. In the regenerator chambers the ends of all outside orpartition walls should be bound, as should the ports, because thebrick expansion may cause leaks and permit ignition of the gasbefore it reaches the working body of the furnace. Study wellthe conditions of subsoil at selected site before putting in foun-dation. Foundations should be of rigid and of first-class ma-sonry, to guard against irregular setting. They should be ofhard red brick, laid in cement or concrete. No part of the fur-nace structure should extend below the lowest point at whichwater may be found. Water is an enemy to smooth furnaceoperation if it should find its way into flues or chambers. Allunderground flues not protected by clay should have an outsidecourse of red brick. Reversing valves should be of such construction that leak-. Fjre rOte Lett Charyiiij/ Flov Open-Hearth Steel ( astings 227 ages and loss of gas will not occur when operated. There • two distinct types, one known as the butterfly valve andanother as the turtlcback. The latter is water sealed, whichis an advantage. The stack should be of such construction as willinduce a good draught, depending upon the damper for regulation. Whenever possible, the doors, door frames and furnacefronts should be water cooled, features which add to the opera-tors comfort in watching his furnace. The cost of installationand maintenance may be heavy, but will result in a longer lifefor the parts and a consequent lessening of their repairs, offset-ting the first cost. This arrangement is only possible on sta-tionary furnaces. On movable ones the piping connections, etc.,would be too complicated. All flues, excepting those leading from the uptakes to thefurnace body, should be roomy, to prevent choking and cuttingby the deposit and heat
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Keywords: ., bookcentury1800, bookdecade1890, bookidironsteel, booksubjectiron
