. Canadian forest industries 1894-1896. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. May, 1895 the: cahada ivu^BKR-iwiAisr 5. McEACHREN'S PATENT DRY XILN. THE accompanying illustration (Fig. 1) represents a double room progressive dry kiln as manufactured by the McEachren Heating and Ventilating Co., Gait, Ont., driven by independent engine. These kilns can be made of any length and any number of rooms from one to ten. The manufacturers claim that they differ from other kilns in use in the following particulars : 1. They will do from 50 to 100 pe
. Canadian forest industries 1894-1896. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. May, 1895 the: cahada ivu^BKR-iwiAisr 5. McEACHREN'S PATENT DRY XILN. THE accompanying illustration (Fig. 1) represents a double room progressive dry kiln as manufactured by the McEachren Heating and Ventilating Co., Gait, Ont., driven by independent engine. These kilns can be made of any length and any number of rooms from one to ten. The manufacturers claim that they differ from other kilns in use in the following particulars : 1. They will do from 50 to 100 percent, more drying with a given amount of heating surface and a corres- ponding amount of steam. 2. They handle about three times the amount of air handled by any other dry kiln and with about 25 per cent, of the power used by other blast kilns. 3. The air is not only blown through the lumber, but drawn through. There being as much exhaustive product at one end of the kiln as forcing power at the other, the air is worked like a continuous belt. 4. The moisture from the lumber is held in the circulating air until the thickest lumber in the kiln is heated through to the centre ; then moisture is taken off gradually as it evaporates fiom the centre of every piece of lumber in the kiln. This process, it is claimed, completely secures against checking, warping, etc. The air being driven through the centre of lumber piles with great rapidity, the moisture is taken away as soon as it "evaporates from the timber, thus preventing all danger from discoloration. 5. Green lumber may be put into the kiln and dry taken out every day, the same hot air being kept in cir- culation, and yet the moisture coming from the green lumber at one end of the kiln does not come in contact with the dry at the other end. 6. The great rapidity with which these kilns dry lum- ber enables the lumberman to season a given quantity per day, thus effecting a saving of about fifty per cent, in space as compare
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectforestsandforestry
