. Railway master mechanic [microform] . tem, Forges, Etc., in Blacksmith Shop of N. P. Ry. at Brainerd, Minn. hammers have been the source of the greatest annoy-ance. A 9-inch blast pipe supplies each fire, and whenfull pressure has been applied large volumes of smokeand gases have previously escaped into the shop. After making several attempts to remove the objec-tionable gases resulting from the furnaces and forgesthe down draft system was finally installed, and thismethod has given very gratifying results. This sys-tem employs a blower to supply blast to the several lead from the main duct
. Railway master mechanic [microform] . tem, Forges, Etc., in Blacksmith Shop of N. P. Ry. at Brainerd, Minn. hammers have been the source of the greatest annoy-ance. A 9-inch blast pipe supplies each fire, and whenfull pressure has been applied large volumes of smokeand gases have previously escaped into the shop. After making several attempts to remove the objec-tionable gases resulting from the furnaces and forgesthe down draft system was finally installed, and thismethod has given very gratifying results. This sys-tem employs a blower to supply blast to the several lead from the main duct to the several forges. Itwas found necessary to run the exhaust line for thesouth end of the shop on the outside of the building,as it was impossible to pass the duct between thefoundations of the scrap furnaces and the foundationof the wall. It was also equally impossible to pass theduct between the foundations of the furnaces and thefoundations of the hammers shown in the plan nearthe furnaces, on account of the jar from the I 41 teFiMdii Forges in Blacksmith Shop Equipped with DownDraft Hoods, N. P. Ry., Brainerd. Minn. Forges Equipped with Down Draft Hoods, Brainerd,Minn., Blacksmith Shop, N. P. Ry. LWAY MASTER MECHANIC March, 1904. The exhaust duct to the south end is of brick construc-tion near the fan, 30 by 28 inches, continuing in 30-inch tile, being finally reduced in cross section to ac-commodate the forges. Each scrap furnace is suppliedwith two 10-inch branch pipes and one 6-inch branchpipe to cover the leakage at doors. In arranging thecourse of the ducts it was necessary to so locatethem as to avoid various sewer, water and gas con-nections. On account of its extreme distance fromthe exhaust fan, forge No. 39 was provided with aspecial connection. It was deemed advisable to
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Keywords: ., bookcentury1800, bookdecade1890, bookidrailwaymaste, bookyear1895
