. The Practical brick and tile book. heat is determinedby the sight of the fireman directed to the mouths andtop outlet of the oven. When the heat is obtained, andbefore the fires bum hollow, the mouths arc stopped upwith ashes to prevent the currents of cold air passingthrough the oven, which is then suffered to cool gradu-ally. An oven is usually fired once a week, but may befired three times in a fortnight. After firing, twenty-four hours should be allowed for cooling before an ovenis opened to take out the tiles. 29. The following table shows the selling price per ART OF MAKING BRICKS AND
. The Practical brick and tile book. heat is determinedby the sight of the fireman directed to the mouths andtop outlet of the oven. When the heat is obtained, andbefore the fires bum hollow, the mouths arc stopped upwith ashes to prevent the currents of cold air passingthrough the oven, which is then suffered to cool gradu-ally. An oven is usually fired once a week, but may befired three times in a fortnight. After firing, twenty-four hours should be allowed for cooling before an ovenis opened to take out the tiles. 29. The following table shows the selling price per ART OF MAKING BRICKS AND TILES. Ill IjOOOj and cost per superficial yard^ of quarries^ dustbricks, and roof tiles :— Site. 1000 i . y*^^ 1 m pence. Thickness. Description. 6 in. sq. 7 „9 »9X4i 10 8X7 „ 35s. 27-89 37-80 „80s. 62-50 „40s. 31-25 „25s. 1 58-33 „1 15-0014-5915-3614-335-14 I 1 inch Quarries. 2 „ Dust „ Roof tUes. DESCRIPTION OF ILLUSTRATIONS. 30. Fiy. 10. Isometrkal Vieiv of a Bench for mouldingTiles,. A. Coal-dust box, 14 in. by 8 in. B. Moulding board, 14 in. by 10 The bow. 31. Fiy. 11. Elevation, showing the Manner in whichthe Tiles are placed during the last Drying.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbr, booksubjectbricks
