is all the time required to keep a series of three In rule, a mixture of sand and granulated coke is the most ef- perfect order. And the washing of one filter does not inter- terial. fective filtering medium. These filters are set up fn series of two or more, as fere with filtration by its… … Fig. l.-THE HYATT FILTERS. tank contains the cleansed fil- gallons per minute, and deliv- tering material. To return this ered it as clear as crystal. This to the filter, the supply valve is closed, the discharge valve, F, one of them In its turn contains no filter bed and remains was done by a…
Patents · Patented · Filter · Water · Scientific American · Filtering · Patent issued · General public · Filtering material · Address munn · Filter bed · Steam fire · Loose pulley · Sewing machine · Fossil meal
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