94 THE SCIENTIFIC PAPERS OF 



engine works of M. Borsig of Berlin are being remodelled for the 

 adoption of this system of heating, as have also been those at the 

 imperial factories at "Warsaw. 



Another important application of the regenerative gas furnace 

 is as a steel melting furnace, in which the highest degree of heat 

 known in the arts is required, presenting consequently the greatest 

 margin for saving of fuel. Plate 18 represents a regenerative steel 

 furnace which has been in satisfactory operation in Germany for a 

 considerable length of time, being worked with lignite, a fuel little 

 superior to peat in heating power. This application of the re- 

 generative gas furnace is indeed rapidly extending in Germany, 

 but has not yet practically succeeded in Sheffield where it was 

 also tried : it is however in course of application at the Brades 

 Steel works near Birmingham. Fig. 19 is a longitudinal section 

 of the furnace, Fig. 20 a transverse section, and Fig. 21 a sectional 

 plan. 



The two pairs of regenerators C C, Figs. 19 and 21, are situated 

 at the ends of the long melting chamber A, in which the steel 

 melting pots B B are arranged in a double row. The chamber 

 is covered with iron cramped arch-pieces P, any of which can be 

 readily removed for getting at the pots. The arrangement of the 

 reversing valves and the air and gas flues is similar to that in the 

 glass furnace previously described. 



Other applications of the regenerative gas furnace are being 

 carried out at the present time : among which may be mentioned 

 one to brick and pottery kilns for Mr. Humphrey Chamberlain 

 near Southampton, for Messrs. Cliff of Wortley near Leeds, and for 

 Mr. Cliff of the Imperial Potteries, Lambeth ; also to the heating 

 of gas retorts at the Paris General Gas Works, and at the Chartered 

 Gas Co.'s Works, London. The description already given however 

 is sufficient to show the facility with which this mode of heating 

 may be adapted to the various circumstances under which furnaces 

 are employed. The important application of the regenerative 

 system to hot-blast stoves for blast furnaces by Mr. E. A. Cowper 

 has already been separately communicated to this Institution (see 

 Proceedings Inst. M. E., 18GO, page 54). 



The experience hitherto obtained with the regenerative mode of 

 heating shows that it is attended with the greatest proportionate 

 advantage in localities where good coal is scarce but where an 



