A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . -tilation as to render abetter system highly de-sirable and even neces-sary. Mr. E. Rogers, havingoccasion to ventilate theworkings in some ex-tensive and very fierycoal seams recently wonat Abercarn in SouthWales, under circum-stances where the fur-nace ventilation couldnot be applied, aftercarefully collecting everyaccessible informationas to the ventilatingmachines used in GreatBritain and on the Con-tinent, came to the con-clusion tliat a plan ofmachine prop
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . -tilation as to render abetter system highly de-sirable and even neces-sary. Mr. E. Rogers, havingoccasion to ventilate theworkings in some ex-tensive and very fierycoal seams recently wonat Abercarn in SouthWales, under circum-stances where the fur-nace ventilation couldnot be applied, aftercarefully collecting everyaccessible informationas to the ventilatingmachines used in GreatBritain and on the Con-tinent, came to the con-clusion tliat a plan ofmachine proposed for thepurpose some years sinceby Mr. James Nasmythwould be the most suita-ble and effective. Afterconsultation with , it was resolvedto test the principle andplan by actual practice ;and the ventilating fandescribed was ma(le atPatricroft by Mr. Nas-myth, and is erected atthe Abercarn general arrange-ments of the top of theshaft and the ventilating fan are shown m figx. CYG and 677. Fig. 678 is a side elevationof the fan and engine, to a larger scale ; anil jf^r. 677 a vertical section of the 1068 VENTILATION OF MINES. The fan a A,f(j. 677, is 13i^ feet diameter, with 8 vanes, each 3 feet 6 inches wide and 3feet long. It is tixcd on a horizontal shaft, n, 8 feet 7 inches in length from centre to cen-tre of the boarhigs, which are 9 inches long by 4^ inches diameter. The vanes are of thin plate iron, and carried bj forkedwrought-iron arms secured to acentre disc, c, fixed upon theshaft B. The fan works within acasing d d, consisting of two fixedsides of thin wrought plate, en-tirely open round the circumfer-ence and connected together bystay rods; the sides are 3 inchesclear from the edges of the vanes,and have a circular opening 6 feetdiameter in the centre of each,from which rectangular wrought-iron trunks, E K, are carried downfor the entrance of the air; thebearings for the fan ,«haft b beingfixed in the outer sides of thesetrunks, A\hic
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
