Report ..., المجلدات 9-17U.S. Government Printing Office, 1929 |
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الصفحة 61
... machine . ( Fig . 35. ) These packages are then ricked for air - drying . As the wood dries and shrinks the wire ties tend to loosen but may be tightened again with a device which puts kinks in the wire and thus shortens it . Figure 36 ...
... machine . ( Fig . 35. ) These packages are then ricked for air - drying . As the wood dries and shrinks the wire ties tend to loosen but may be tightened again with a device which puts kinks in the wire and thus shortens it . Figure 36 ...
الصفحة 112
... machines . Much of it is in a condition of superdryness on the surface , and there may be unequalized stresses in it which produce an effect of brittleness ; if a slightly cupped board is flattened out under the planer rolls , the ...
... machines . Much of it is in a condition of superdryness on the surface , and there may be unequalized stresses in it which produce an effect of brittleness ; if a slightly cupped board is flattened out under the planer rolls , the ...
الصفحة 115
... machines working on long runs without frequent changes of set - up , and at any given time the kiln- dried rough product will include some stock not suited to the pur- poses for which the machines are being run at the time ; such ...
... machines working on long runs without frequent changes of set - up , and at any given time the kiln- dried rough product will include some stock not suited to the pur- poses for which the machines are being run at the time ; such ...
الصفحة 129
... Machine burn_ . Water stain__ Distinction between stains_ . CONTENTS Page 1 1 1 1 1 3 3 Economic importance of brown stains . Yard brown stain__ Kiln brown stain ......... . Moisture transfusion theory Concentration of stain__ . Test ...
... Machine burn_ . Water stain__ Distinction between stains_ . CONTENTS Page 1 1 1 1 1 3 3 Economic importance of brown stains . Yard brown stain__ Kiln brown stain ......... . Moisture transfusion theory Concentration of stain__ . Test ...
الصفحة
... Machine burn_ . Water stain . Distinction between stains_ Economic importance of brown stains- Yard brown stain__ . Kiln brown stain__ Moisture transfusion theory . Concentration of stain .. Test with blotting paper .. Prevention of ...
... Machine burn_ . Water stain . Distinction between stains_ Economic importance of brown stains- Yard brown stain__ . Kiln brown stain__ Moisture transfusion theory . Concentration of stain .. Test with blotting paper .. Prevention of ...
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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...