. Canadian forest industries 1907. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. June,1907 CANADA LUMBERMAN AND WOODWORKER 23 water will be removed without injury to its fibre. The progressive dryer will hold ten ears at a time, each ear holding twenty-two sheets. 6 by S feet, of the wood pulp board. One of these ears was to be taken out at B, and another with undried paper started at A every twelve minutesâthus it requires two hours for the ear to go through the kiln. A particular feature will be noted in that just before the ear leaves the progr
. Canadian forest industries 1907. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. June,1907 CANADA LUMBERMAN AND WOODWORKER 23 water will be removed without injury to its fibre. The progressive dryer will hold ten ears at a time, each ear holding twenty-two sheets. 6 by S feet, of the wood pulp board. One of these ears was to be taken out at B, and another with undried paper started at A every twelve minutesâthus it requires two hours for the ear to go through the kiln. A particular feature will be noted in that just before the ear leaves the progressive kiln at B. it stands for twelve minutes directly over a large opening from the air supply duet, which will thoroughly heat the paper and pre- pare it to enter the closed kilns which are to remove the last 50 per cent, of the moisture at a constant temperature. Cars after leaving the progressive dryer go to the closed kiln, and when the kiln is full the heat is turned on. They remain here for nine hours, when they are perfectly dry and ready for shipment. Two of the closed kilns are in use at a time, while the third is being Tre^de ^ Opportunities. Fig. 2. filled, the transfer allowing ready changing of cars from one place to another. A Buffalo three-quarter Housing 140 inch steel plate fan is shown directly connected to a horizontal engine. Speed. 170 revolutions per minute. The heater consists of fourteen sections, 5 feet by 7 feet by 10 inches, of the manifold type, containing in total 8,554 lineal feet of 1 inch pipe. Seventy-five ears will be required to operate the plant.âThe Paper Mill. WEIGHTS OF NORTHERN HARD- WOODS. The Northwestern Hardwood Lumber Asso- ciation, at a recent meeting at Minneapolis, adopted the following weights for northern hardwoods: Pounds. Brown ash 3 250 4^000 Hard maple 4 qqq Soft maple 3 500 Rock elm ;' 4 q00 Basswood 9 400 ^rnut, *";;;;";;:;;â 2^00 White oak 4 000 vioay 3,800 Sort elm g qqq Basswood ceiling, 3-4 in ...
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