. American engineer and railroad journal . rom stage along these lines and can now take care of awide range of work heretofore considered as practically impos-sible without almost prohibitive costs. The operation of the torch is no doubt generally understoodin its application to welding or fusing operations, and of its cutting properties will no doubt prove of cut through in i^ mmutes. The consumption of oxygen is notat .ill extravagant. For this cut lo cubic feet were used, costingabout 25 cents, but it may be said that this is, perhaps, an unusualcase and can
. American engineer and railroad journal . rom stage along these lines and can now take care of awide range of work heretofore considered as practically impos-sible without almost prohibitive costs. The operation of the torch is no doubt generally understoodin its application to welding or fusing operations, and of its cutting properties will no doubt prove of cut through in i^ mmutes. The consumption of oxygen is notat .ill extravagant. For this cut lo cubic feet were used, costingabout 25 cents, but it may be said that this is, perhaps, an unusualcase and can scarcely be equalled every time. It is recalled thatthe expense of cutting a 6-in. shaft, including, no doubt, thecost of the and acetylene used in heating as well, was37^; cents. In one of the illustrations is a view of the cutting operationwhilp it is going on. The I-beam in this case is 15 inches wide,and such a beam may be cut through in less than 3 minutes. Theflying debris is to be seen streaming off to the right. It will be. THE CUTTING TORCH. interest in supplementing what has been said heretofore withoutany elaborate description of the appliance itself, which wouldmerely be in the nature of a repetition. The method of cutting employed is, briefly, as follows: Oxy-gen and acetylene are supplied to the welding nozzle as gases are there mixed together in suitable issuing from the tip, they are ignited by the flame and areburnt. There are two flames—an inner one, bright and excessivelyhot; and an outer enveloping flame, dull and comparatively steel to be cut is heated to a very high temperature by meansof the little inner flame, but no cutting of an appreciable amountis done by this flame. The purpose of its application is to getthe metal to a high temperature at the point of cutting. A sec-ond nozzle terminates quite close to the tip of the heating this, is driven under ^sure. Conseq
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
