. The launderer. A practical treatise on the management and the operation of a steam laundry . Fig. 31. ROOT BLOTVER. (P. H. & F. M. Root Co.). Fig. 33. AIR FAN. (American Laundry Machinery Co.) — 95 — Siicli burners as are used in ironing rolls consist ofa small pipe enclosed in a larger one. The gas is ad-mitted into the smaller pipe, and it is allowed to escapefrom a number of fine holes at the point where combus-tion is desired. There is also a small air-pipe whichis connected to the gas pipe at a point somewhat in ad-vance of the point of combustion, and this furnishessufiicient air to in
. The launderer. A practical treatise on the management and the operation of a steam laundry . Fig. 31. ROOT BLOTVER. (P. H. & F. M. Root Co.). Fig. 33. AIR FAN. (American Laundry Machinery Co.) — 95 — Siicli burners as are used in ironing rolls consist ofa small pipe enclosed in a larger one. The gas is ad-mitted into the smaller pipe, and it is allowed to escapefrom a number of fine holes at the point where combus-tion is desired. There is also a small air-pipe whichis connected to the gas pipe at a point somewhat in ad-vance of the point of combustion, and this furnishessufiicient air to insure complete combustion whileair is allowed to pass around the gas through thelarger air-pipe. If the smaller air-pipe were not pres-ent, the combustion would be incomplete, and the re-sult would be a yellow flame which would soon coatthe inner surface of the roll with soot. Soot is a non-conductor, and it destroys the heating properties of theroll. The usual method of supplying air to ironing ma-chines is with a fan, although many laundries oflate have adopted the Root blower, shown in Fig. 31,or an air-pump. A fan simply creates a
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