. Electrical world. ns concerning the application of the electric induc-tion furnace, not as a substitute for. but in combination with, ordi-nary metallurgical furnaces. This is quite a promising idea andshould in no way be confounded with the several schemes of re- placing our blast furnaces by electric furnaces for making pig is easy to concentrate by means of the electric current a highheat at a certain point and at a certain stage of the operation. Thus,in his recent presidential address before the American Electrochem-ical Society, Dr. J. W. Richards suggested the auxiliary use of
. Electrical world. ns concerning the application of the electric induc-tion furnace, not as a substitute for. but in combination with, ordi-nary metallurgical furnaces. This is quite a promising idea andshould in no way be confounded with the several schemes of re- placing our blast furnaces by electric furnaces for making pig is easy to concentrate by means of the electric current a highheat at a certain point and at a certain stage of the operation. Thus,in his recent presidential address before the American Electrochem-ical Society, Dr. J. W. Richards suggested the auxiliary use ofelectric heating to take off the peak of the load, so to speak, inour open hearth steel furnaces; that is, to furnish the last few hun-dred degrees of necessary temperature, while the combustion ofgas furnishes the lower range. Schneiders patent specification contains several suggestions ofthis kind. We may mention only the combination of the inductionfnrnace with a blast furnace. Fig. 2 shows the vertical and hori-. FIG. 2.—SCHNEIDER INDUCTION FURNACE. zontal cross-section of a blast furnace, the crucible, a, of which isprovided with the heating tubes, i and 3. The crucible, a, may thusbe supplied at any stage of the operation with additional heat byelectrical means. The electrical energy could be easily and cheaplyprovided by using part of the blast furnace gases for the operationof gas engines coupled to electric generators. BATTERY INVENTION. A patent granted to J. von der Poppenburg refers to the construc-tion of a storage battery plate, in which cross pieces adapted fordividing or separating the active material protrude from the frameon both sides and are provided with holes at the part protrudingfrom the frame; through these holes pass elastic bars, which pressor bear against the protecting strips that prevent the active materialfrom dropping off. The object is to obtain, in case of an expansionof the active material, only a bending of the elastic bars and to pre-vent
Size: 1247px × 2004px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
