Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . 40 A 8 7 U 98 59 In 1834 M. Dufrenoy reported to the Frenchgovernment the results reached at the Clyde iron-works, which were as follows : — For the year . 1829 Temperature of blast . ColdCoal used per too of iron. As fusion, cwt. , . 133 For lieating air, raw coal nilFor blowing engines,coal 20 153 Cwt. limestone per ton ofiron .... lOi 9 7 Besides thi
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . 40 A 8 7 U 98 59 In 1834 M. Dufrenoy reported to the Frenchgovernment the results reached at the Clyde iron-works, which were as follows : — For the year . 1829 Temperature of blast . ColdCoal used per too of iron. As fusion, cwt. , . 133 For lieating air, raw coal nilFor blowing engines,coal 20 153 Cwt. limestone per ton ofiron .... lOi 9 7 Besides this advantage, the make was increasedby more than one third, and a blowing engine,which only supplied three with cold blast,was eciual to four when the air was heated. Players stove (B, Fig. 2588) for heating furnace-blasts ( lish) is so con- structed as touse the wastegases fromblast - furnaces,drawing themby means of asteam-jet into astove, wherethey are con-sumed to heatthe air-blast. The stoveconsumes tlie 1 1 Itinii J II II II 11 «i« m 1 1 1 1 11 m II II 1! 11 m JHI II II II 11 mi ill If II II 1 11 1 111 « Jill II II 1 1 1 im .Jiiii II 11 1 1 1U( )\ II 1 11 1 11 111 ?(IIJII 1 II 1 11 mil. gas in a .sepa-rate chamberfrom that con-taining thepipes to beheated ; air tosupport com-bustion isallowed to en-ter, and theheated fumescapethrough aseries of nar-row slots intoan air-tightchamber hav-ing a damperon the topand contain-ing a series ofvertical re-verting pipesthroughwhich passesthe blast tobe heated. Asthe highlyheated fumeswill not again ignite without a fresh supply ofo.\ygen, the cast-iron blast-pipes remain uninjuredunder a heat of 1100° or 1200°. An auxiliary fireplace for burning coal is shownattached to the hot-blast stove. From this fireplacea Hue conducts the flame, smoke, and gases fromthe blast-furnace into the chamber where the com-bustion is completed. Attached to the end of thisfireplace, and connected with flues at the furnace-to
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