. American engineer and railroad journal . rovided below the boiler to facilitate the re-moval of the bottom plate B< in cleaning or repairing. Whena number of my boilers are set together, the pits a may beleft open and communicate with a tunnel through which theashes cau be conveniently removed without the annoyance ofhauling them out through the fire-room. The patent isNo. 535,115, andis dated March 5,1895. MUMKOKD S WA-TER-TUBE BOILER. Fig. 2 repre-sents another formof water-tube boil-er patented by Mumford, ofColchester, Eng-land. This inven-tion, he says, re-lates to an im-proveme
. American engineer and railroad journal . rovided below the boiler to facilitate the re-moval of the bottom plate B< in cleaning or repairing. Whena number of my boilers are set together, the pits a may beleft open and communicate with a tunnel through which theashes cau be conveniently removed without the annoyance ofhauling them out through the fire-room. The patent isNo. 535,115, andis dated March 5,1895. MUMKOKD S WA-TER-TUBE BOILER. Fig. 2 repre-sents another formof water-tube boil-er patented by Mumford, ofColchester, Eng-land. This inven-tion, he says, re-lates to an im-provement in thattype of water-tube boilers hav-ing a steam col-lector, A, and twowater chambers Cand C, the lattereach connected tothe former by aseries of smalltubes D and oneor more circulat-ing pipes F, andit consists in ar-ranging the saidwater tubes ingroups to for mself-contained ele-ments by connect-ing their ends totwo boxes orchambers, whichare connected re-spectively withthe steam collec-tor and waterchambers by sin-gle pipes E fitted. pipes /•. In a Blngle boiler two such pipes are used, and theyare preferably arranged at the front end of the boiler, asshown by lig. 2, but in a double ended boiler they air prefer-ably arranged between the two parts of the boiler. Whentwo circulating pipes are used, as shown by fig. 2, the twochambers It and l: an sometimes connected together at theback end of the boiler by a pipe such as b. yM>////////////////////////// Fig. 1. MOORES VERTICAL WATER-TUBE BOILER. with flanged or other suitable joints, the said boxes respectivelybeing arranged side by side to form the top and sides of thefire-box or furnace G, the object being to facilitate the re-pair of the boiler in case of accident to any of the tubes. Each of the boxes Con each side of the boiler is connectedwith the adjacent box C by a group of curved tubes I), thesaid tubes being of such a curvature that they cau readily bewithdrawn or inserted through one or other of the said bo
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