Scientific American Volume 77 Number 07 (August 1897) . tons per day through-out the year. At the factory it is unloadedonto the buckets of a large cantileverelevator which has a capacity of hand-ling a thousand tons of this material perday. This work was formerly done by singlehoisting , but the operation wasslow, and the present large elevator haslately been installed in their place. When the conveyor is at work the outerend of it rests upon the deckof the scow, and the upperend delivers the material ontoa small cross conveyor, whichin turn feeds two large in- cal tanks of plate stee
Scientific American Volume 77 Number 07 (August 1897) . tons per day through-out the year. At the factory it is unloadedonto the buckets of a large cantileverelevator which has a capacity of hand-ling a thousand tons of this material perday. This work was formerly done by singlehoisting , but the operation wasslow, and the present large elevator haslately been installed in their place. When the conveyor is at work the outerend of it rests upon the deckof the scow, and the upperend delivers the material ontoa small cross conveyor, whichin turn feeds two large in- cal tanks of plate steel, 5J^ feet in diameter and 18 feetlong, are arranged vertically as shown in the illustra-tion. They are tapered at the ends, the mouths beingclosed by steamtight covers and the bottom terminat-ing in a short lengths of pipe which are furnished withlarge stop valves. After the digesters are filled with thegarbage, they are hermetically sealed and steam at50 pounds pressure is admitted through the lowercone. The cooking Is allowed to go on for a period. TOP OF DIGESTER EOOM SHOWING FIFE FILLEBS^ of eight to ten hours, until the garbage is thoroughlydisintegrated and reduced to a pulplike consistency,all germs in the meantime being thoroughly matter is then dropped into twelve storagetanks, there being four digesters to each tank. On theoutside of each tank there is a curved telescopic de-livery pipe, and through these the matter is unloadedonto the press platens carried upon small trolleys, whichare run underneath the pipe for this purpose. Upon the platen is placed a mould or outer framewhich is covered with burlap, and after a sufficientamount of the material has been run into the burlap tofill up the mould, the burlap Is folded over above it andcovered with a rack or wooden gridiron about J^ inchin thickness. Another mould with burlap Is placedabove this and more of the cooked garbage is run in,the process being repeated until there is a pile about4 feet in heig
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectdevice, booksubjecttb
