. A. B. C. in butter making;. Butter. 91 top should be insulated, but if it is desired to have the smokestack at the other end, it costs but little more to lead the smoke back over the top, and this will act as an effective covering. In small skim stations and dairies the tubular upright (Fig. 71) is the one to choose, tnough it is much more difficult to keep clean. Never buy a second-hand boiler without having it exam- ined by an expert. Before starting a boiler examine the safety valve and steam gauge (which should be at zero when the water is cold), the try cocks and the glass gauge. Never
. A. B. C. in butter making;. Butter. 91 top should be insulated, but if it is desired to have the smokestack at the other end, it costs but little more to lead the smoke back over the top, and this will act as an effective covering. In small skim stations and dairies the tubular upright (Fig. 71) is the one to choose, tnough it is much more difficult to keep clean. Never buy a second-hand boiler without having it exam- ined by an expert. Before starting a boiler examine the safety valve and steam gauge (which should be at zero when the water is cold), the try cocks and the glass gauge. Never pump cold water into a hot boiler or blow it off under pressure. If the water should be low (which it never ought to be) find out if it is below the flues, and then bank or cover the fire with ashes or fresh coal if no ashes are at hand, or draw at once. Don't touch safety or any other valves, and under no cir- cumstance turn on the feed until the boiler is partly cooled. The water having been analyzed, consult an expert as to boiler compound, but potatoes or rice will, as a rule, be (Flg. 71.) good enough,, and not hurt the boiler as many compounds do. To keep it clean let out about 2 inches of water every morning before starting the fire and wash out at least once a month. If flues gather scale scrape off. It is said that r6 inch loses 15 per cent and J-inch 60 per cent of the fuel value. Leaks should be stopped at once to prevent corrosion even so leaking valves where the drip hits the boiler. As soon as blisters appear, examine carefully and have them patched or trimmed. All parts of the boiler exposed to the fire should be. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Monrad, John Henry, 1848-1915. [from old catalog]. [Winnetka, Ill. ]
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbutter, bookyear1889