. American foundry practice . ld be a dry sand coreused, to prevent any washing away when the iron runsout. In making such reservoirs the sides are built up with con-siderable slant, so as to make the bottom smaller than thetop. This gives strength to the bottom. A sheet-iron curb-ing would answer the same purj^ose as the 2)ig iron, andwould be better for green-sand reservoirs from 4 up to 8 feetmean diameter. For more than 8 feet it is safer to make a reservoir asshown in the engraving, in which E, E, are iron x>lates bed-ded on a solid flooring ; P is a boiler iron curbing, theplates bein
. American foundry practice . ld be a dry sand coreused, to prevent any washing away when the iron runsout. In making such reservoirs the sides are built up with con-siderable slant, so as to make the bottom smaller than thetop. This gives strength to the bottom. A sheet-iron curb-ing would answer the same purj^ose as the 2)ig iron, andwould be better for green-sand reservoirs from 4 up to 8 feetmean diameter. For more than 8 feet it is safer to make a reservoir asshown in the engraving, in which E, E, are iron x>lates bed-ded on a solid flooring ; P is a boiler iron curbing, theplates being screwed together with bolts. Inside of thiscurbing is sand, rammed solid, and on the top of this solidfoundation a stout cast-iron plate, I, is bedded. To thisplate Y, is bolted the reservoir curbing, as shown at B. Forvery deep reservoirs this angle iron should be one continu-ous ring all around the bottom of the curbing. It can bemade of cast iron or of boiler iron. It is not necessary that HDSERVOIRS AND LADLES. ^ ^m Y--. (5 feet) leugtli taken after ladle is mounted V square boi«s^>j JJLoil hole iWoim 1
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