The Insurance Engineers' Hand Book; A Reference Book Containing Useful Information, Rules, Tables, and Data, for the Use of Fire Protection and Fire ... Local Agents, Architects, Mechanics, Firemen,

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ... dissolve the chemical in the water barrel in cold water usually result in a large percentage of the chemical settling to the bottom of the barrel and there remaining in an undissolved state. If wooden barrels are to be used, they should be first treated on the inside with a thick coating of asphaltum varnish, to prevent leakage as the calcium chloride is hydroscopic. For the same reason, it is well not to fill barrels completely, otherwise they may run over and cause trouble if located inside. 3. A loose stopple type of extinguisher designated as small size and having a capacity of 1% gallons is approved. It is similar in construction to the 2%-gallon extinguisher, uses the same chemicals, and has approximately 60 per cent of the extinguishing power of the latter., It is intended primarily for use by women and children. 4. A type of extinguisher much in favor with members of tire departments is shown in Fig. 105. It is a cylindrical metal vessel holding about 6 gallons. The contents are discharged by means of a double acting force pump, through a rubber hose and nozzle. Many firemen have become very adept in its use. As a device for general use it is open to some criticism, e. g., it needs to be filled frequently; it can not be carried and operated successfully at one and the same time; it serves the purpose of a small spraying machine so well that it has a poor record for being present when wanted for fire extinguishment. It is not approved by the National Board. 5. The latest new type of device approved as an extin guisher is the pump-type non-freezing extinguisher. See Fig. 106. It is designed particularly for use in cold places where the acid and soda machine would not be serviceable, but it may be used in any place subject to the...