. American engineer . e with eachother. After the prosser has been placed on the mandrel, thesesplit guides are forced against the end of it by their correspond-ing nuts, gripping the prosser firmly between them. The workis done on a milling machine with a 3/32 in. saw. and the samejig can be used to make 2-in. prossers as well. FILTER FOR SHOP DRINKING WATER BY PAUL R. DUFFEY .A. very simple and efficient filter, having a capacity of about30 gals, per hour under ordinary conditions, is shown in theillustration. It consists of a cast iron body and head, a wroughtiron yoke for holding the head
. American engineer . e with eachother. After the prosser has been placed on the mandrel, thesesplit guides are forced against the end of it by their correspond-ing nuts, gripping the prosser firmly between them. The workis done on a milling machine with a 3/32 in. saw. and the samejig can be used to make 2-in. prossers as well. FILTER FOR SHOP DRINKING WATER BY PAUL R. DUFFEY .A. very simple and efficient filter, having a capacity of about30 gals, per hour under ordinary conditions, is shown in theillustration. It consists of a cast iron body and head, a wroughtiron yoke for holding the head in place, a screw for the yoke,a rubber gasket, a rod for holding the filter stone and a suitablecomposition stone. A very good filter stone may be purchased, or one which givessatisfactory results may be made of a good grade of fire making a stone, a set of molds of the size required are seton a smooth ramming board. A sufficient amount of fire clayand water is then mixed until the mass has the consistency of. PREPARING HARD GREASE FORJOURNAL BOX CELLARS BY H. E. Instructor, Erie Railroad, Dunmore, Pa. In preparing the grease cakes for driving and truck boxcellars with the device illustrated, a wooden former of the cor-rect radius is placed in the cast iron box and supports the per-forated plate. The grease is then placed above the perforated F/he Clay FilfeiSfone Filter and Filter Stone for Shop Drinking Water. dough, when the molds are filled and the material is rammeduntil no open spaces are left. The stone should then be placedin a warm place for several days till it hardens sufficiently topermit the removal of the forms, when it is placed in a suit-able kiln and baked until the desired degree of hardness isreached. When the filter is in use, water enters at the bottom inletpipe and passes upward between the inside wall of the filter bodyand the outside of the stone. The water before passing out atthe top must work its way through the stone, th
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
