. Canadian forest industries 1892-1893. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. m CANADA LUMBERMAN Volume XIV. Number ii. } TORONTO, ONT., NOVEMBER, 1893 / Terms,;$i.«> Pee Yeab (. Single Comes, io Cek i s ON SEPARATORS. T^HIS is a day for watching the small economies of A business. The time was, as the Locomotive says, when manufacturers paid comparatively little attention to the smaller losses that occurred in their mills and factories. Competition was not severe, and it was not considered necessary to keep a watchful eye on the innumer
. Canadian forest industries 1892-1893. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. m CANADA LUMBERMAN Volume XIV. Number ii. } TORONTO, ONT., NOVEMBER, 1893 / Terms,;$i.«> Pee Yeab (. Single Comes, io Cek i s ON SEPARATORS. T^HIS is a day for watching the small economies of A business. The time was, as the Locomotive says, when manufacturers paid comparatively little attention to the smaller losses that occurred in their mills and factories. Competition was not severe, and it was not considered necessary to keep a watchful eye on the innumerable small leaks through which profits escaped. Competition in all lines of manufacturing has increased tremendously, and the narrow margins on which busi- ness must be done make the most trifling losses worthy of serious consideration. This studied economy shows itself in the use of steam; and we find mills fitted out with triple-expansion engines and running at pressures that call for the utmost skill in designing boilers that shall carry these pressures safely. The drips from the pipes are carefully collected and returned to the boiler- house, and heat that otherwise would be wasted is utilized for heating feed-water. As the utilization of waste is increasingly realized, new problems are contin- ually arising and forcing themselves on our attention. Thus, in saving the heat from exhaust steam, it was soon found that, when open heaters are used, the oil particles that are carried along from the engine pass into the feed-water and give trou- ble in the boilers. The action of oily or greasy matter in boilers will be understood from the fol- lowing extract from the Locomotive for March, 1885 : :'The action of grease in a boiler is pecu- liar. It does not dissolve in the water, nor does it entirely decompose. Nei- ther does it remain on top of the water ; but it seems to form itself into what may be described as 'slugs,1 which at first seem to be slightly lighter than the water,
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectforestsandforestry
