. Seasoning of wood; a treatise on the natural and artificial processes employed in the preparation of lumber for manufacture . terior view of the Box Dry Kiln. This particular kiln is 20 feetwide, 19 feet deep and 14 feet high. Box kilns are used mostly whereonly a small amount of kiln-dried lumber of various sizes is are not equipped with trucks or cars, and therefore cost less toconstruct than any other tjrpe of dry kiln. In these small kilns the circulation is under perfectcontrol, so that the efficiency is equal to that of the moreextensive plants. These special kilns will r
. Seasoning of wood; a treatise on the natural and artificial processes employed in the preparation of lumber for manufacture . terior view of the Box Dry Kiln. This particular kiln is 20 feetwide, 19 feet deep and 14 feet high. Box kilns are used mostly whereonly a small amount of kiln-dried lumber of various sizes is are not equipped with trucks or cars, and therefore cost less toconstruct than any other tjrpe of dry kiln. In these small kilns the circulation is under perfectcontrol, so that the efficiency is equal to that of the moreextensive plants. These special kilns will readily appeal to manufacturers,whose output calls for the prompt and constant seasoningof a large variety of small stock, rather than a large volumeof material of uniform size and grade. SECTION XIII DRY KILN SPECIALTIES KILN CARS AND METHOD OF LOADING Within recent years, the edge-wise piling of lumber(see Figs. 40 and 41), upon kiln cars has met with con-siderable favor on account of its many advantages overthe older method of flat piling. It has been proven thatlumber stacked edge-wise dries more uniformly and rapidly,. Fig. 40. Car Loaded with Lumber on its Edges by the Automatic Stacker,to go into the Dry Kiln cross-wise. Equipped with two edge pihngkiln trucks. and with practically no warping or twisting of the material,and that it is finally discharged from the dry kiln in amuch better and brighter condition. This method ofpiling also considerably increases the holding and con-sequent drying capacities of the dry kiln by reason of theincreased carrying capacities of the kiln cars, and theshorter period of time required for drying the material. DRY KILN SPECIALTIES 207 In Figures 42 and 43 are shown different views of theautomatic lumber stacker for edge-wise piUng of lumber onkiln cars. Many users of automatic stackers report that
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