Twentieth century hand-book for steam engineers and electricians, with questions and answers .. (1905)
Swingle, C. F. [from old catalog], Horstmann, Henry Charles, 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] · Chicago, F. J. Drake & co. · leaf 44
f a solid arch would necessitate. This formof segmental arch allows ample freedom for expansion BOILER SETTINGS AND APPURTENANCES 31 of the boiler, in the direction of its length, withoutleaving an opening when the boiler contracts. The crosswise construction of arch bars, while afford-ing equal… … FIGURE 8. between the back arch and the rear head above thetubes. Boiler walls should always be well secured in bothdirections by tie rods extending throughout the entirelength and breadth of the setting, whether there be oneboiler or a battery of several. The bottom rodsshould be laid in place at…
