. The miller, millwright and millfurnisher. atwill have as many as possible of the following points : Lightness, to savefreight and to prevent weighing the pipes down ; ease of application andremoval ; freedom from cracking and crumbling; low heat-conductingpower and low cost; and it is perhaps an advantage if it can be put on the 146 BOILERS. pipes when they are hot. For low temperatures, such as occur on ordinarymill boilers, the Toope Sectional Covering, Fig. 62, made by Chalmers-SpenceCompany, N. Y., may be recommended. It consists of layers of hair felt, alter-nating with asbestos inside
. The miller, millwright and millfurnisher. atwill have as many as possible of the following points : Lightness, to savefreight and to prevent weighing the pipes down ; ease of application andremoval ; freedom from cracking and crumbling; low heat-conductingpower and low cost; and it is perhaps an advantage if it can be put on the 146 BOILERS. pipes when they are hot. For low temperatures, such as occur on ordinarymill boilers, the Toope Sectional Covering, Fig. 62, made by Chalmers-SpenceCompany, N. Y., may be recommended. It consists of layers of hair felt, alter-nating with asbestos inside and out, being made in sections three feet long,split down one side so as to be easily applied, and the joint being fastenedby wire staples or by copper wire, and then pasted over with paper. Thecovering should be larger than the pipe, and should be held off at an equaldistance all around by short collars of the same material, breaking jointwith the lengths. Fig. 63 shows another form of covering made by thesame company, but not Fig. 62.—Toope Sectional Pipe Covering.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectflourmi, bookyear1882
