Report ..., المجلدات 9-17U.S. Government Printing Office, 1929 |
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الصفحة
... heating equipment of dry kilns__ . Why the final kiln - drying stage needs more heat and less humidity . 62 67 67 70 73 74 75 76 Compartment kilns for sawmill kiln - drying ...... . 80 Piling of lumber for kiln - drying ---- 86 Stickers ...
... heating equipment of dry kilns__ . Why the final kiln - drying stage needs more heat and less humidity . 62 67 67 70 73 74 75 76 Compartment kilns for sawmill kiln - drying ...... . 80 Piling of lumber for kiln - drying ---- 86 Stickers ...
الصفحة 7
... heat efficiency of fuel wood due to incomplete seasoning represents an important waste . The sum total of the various seasoning losses represents over 1,000,000,000 cubic feet of standing timber per annum , or more than 4 per cent of ...
... heat efficiency of fuel wood due to incomplete seasoning represents an important waste . The sum total of the various seasoning losses represents over 1,000,000,000 cubic feet of standing timber per annum , or more than 4 per cent of ...
الصفحة 10
... heat so freely that lumber in the bottom of the piles dries more rapidly than that in the middle height , an unusual and very desirable condition . A California manufacturer reports the adop- tion of wood ashes and cinders for yard ...
... heat so freely that lumber in the bottom of the piles dries more rapidly than that in the middle height , an unusual and very desirable condition . A California manufacturer reports the adop- tion of wood ashes and cinders for yard ...
الصفحة 28
... heat , and this cooler air tends to sink downward and out of the pile at the bottom , drawing fresh air in its place . This movement tends to be most active where there is most evaporation from the lumber , and there- fore shows most ...
... heat , and this cooler air tends to sink downward and out of the pile at the bottom , drawing fresh air in its place . This movement tends to be most active where there is most evaporation from the lumber , and there- fore shows most ...
الصفحة 63
... a sluggish air cir- culation , which slows down further if any attempt is made to keep the heat within reasonable limits and cuts the production of. MANUFACTURERS ' EDITION 63 Dimension in large stacks, end lapped_-----
... a sluggish air cir- culation , which slows down further if any attempt is made to keep the heat within reasonable limits and cuts the production of. MANUFACTURERS ' EDITION 63 Dimension in large stacks, end lapped_-----
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طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
air-drying air-seasoning black gum blue stain bottom brown stain Bureau California pine cents per copy chemical chestnut chimney circulation cleats Committee on Wood compartment kilns courtesy of Forest creosote crossers decay degrade develop Douglas fir dried dry-kiln Forest Products Laboratory fungi fungus grades handling heartwood heat humidity inches industry interior kiln-drying layers length load logs material method mill moisture content Nail National Committee nonutilized wood operation Photograph courtesy pieces 16 pile pipes Planer shavings Pondosa poplar practice prevent progressive kiln red gum roof sap stain sapwood sawmill seasoning shown in Figure shows side small dimension stock Sodium bicarbonate softwoods southern hardwood southern pine spacing species steam stickers storage sugar pine surface temperature tests thickness timber tion usually waste western white pine white pine width WOOD UTILIZATION y. p. Edgings y. p. Sawdust y. p. Slabs yard yellow pine zinc chloride
مقاطع مشهورة
الصفحة 8 - Board, and the Bureau of Foreign and Domestic Commerce of the Department of Commerce.
الصفحة 1 - ... preservative must displace or compress the air in the wood. After the retort is filled, additional preservative is forced into the cylinder by means of pressure pumps, the pressure being gradually raised to and maintained at 125 to 175 Ib.
الصفحة 40 - US DEPARTMENT OF AGRICULTURE. Forest Service. 1920. Timber depletion and the answer. A summary of the report on timber depletion and related subjects prepared in response to Senate Resolution 311. US Dept.
الصفحة 118 - Manual of Design and Installation of the Forest Service Water-Spray Dry Kiln. By LV Teesdale. Department of Agriculture Bulletin 894, October 18. 1920. Price, 10 cents. A good manual for this type of kiln. The Theory of Drying and its Application to the New Humidity Regulated and Recii-culating Dry Kiln.
الصفحة 10 - DC, works in close cooperation with a number of official and private organizations, notably the Bureau of Standards of the Department of Commerce and the Forest Products Laboratory of the Forest Service, Department of Agriculture.
الصفحة 51 - Commerce, comprises about 200 members representing manufacturers, distributors, and consumers of forest products. Its object Is to work for closer utilization of our country's timber resources. The committee, whose headquarters are in the Department of Commerce. Washington, DC, works in close cooperation with a number of...