Utilization of Black Walnut, Volúmenes901-925U.S. Department of Agriculture, 1921 - 89 páginas Of general market conditions. pp. 79. |
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14 inches amount of walnut Arkansas average birch black walnut board foot burl butt cabinet woods cabinetwork Carolina cent Circassian color commercial cost demand dimension stock dog board eastern exported factories feet of veneer figured walnut figured wood finished foot of log fungus growth growth rings gunstock flitch haul heartwood side highly figured inch thick inches in diameter Indiana Kansas Kentucky kerf linear foot log scale lumber mahogany million board feet mills Missouri moist North Carolina obtained Ohio panels piano pieces plain production propeller stock purchased quar red gum region rifle sapwood sawed seconds 4/4 sheets small and defective small end soil southeastern square feet stay-log rotary process steam straight rotary straight sliced striped Table Tennessee thousand board feet trees trimmed U. S. Dept usually valleys veneer logs walnut furniture walnut logs walnut timber walnut veneer waste West Virginia WOOD VENEER Yellow birch yield
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Página 2 - ... that large amounts of the timber were available in any one locality. Its scattered growth is the reason for this. The exhaustion of the available supply has been repeatedly announced. Nevertheless, during the war large quantities were discovered that no one thought existed, and many lots of large-size trees were found that were equal in quality to those of the period when walnut was most popular. The annual cut of walnut timber is comparatively small, but a fairly steady supply is available because...
Página 82 - The size is generally determined by the average of two diameters taken at right angles to each other and measured inside the bark at the small end.
Página 87 - ... in the log form. Figured walnut is more valuable than plain. Walnut firms do not, as a rule, publish a fixed scale of prices and log grades, the price generally being set by the log buyer. Although the present very high market price of the timber may not be maintained, walnut will always be in demand, and will bring good prices because of the intrinsic value of the wood. Owners of timber tracts containing walnut will generally find .it profitable to favor the young growth of this timber over...
Página 67 - ... of the case. Mark one of these binding-posts C and the other two Ll and L2. Connect one terminal of each of the magnet windings to the post marked C and the other terminal to the posts Ll and L2. You can finish the case in any style you may desire. Oftentimes it is desirable to have it correspond to the finish of the woodwork of the room in which it is to be placed. The distance the point of the indicator will move through depends upon the distance between the cores of the magnets and the distance...
Página 7 - Black walnut trees grow naturally over a large area, extending from southwestern New England to central Nebraska, Kansas, Oklahoma, and Texas.
Página 84 - XIV, fig. 3. ) After the trees are cut the logs should not be left lying for a long time on the ground or exposed to the sun. The logs should be raised from the ground and the ends should be painted. If the ends of the logs are checked at the time of felling, it is customary for the cutters to make a blunt cut with a wedge across each end of the check. This helps to prevent the check from extending to the bark and, what would often result, the log splitting open its entire width.
Página 2 - US Department of Agriculture Bulletin No. 900, dated January 17, 1921, titled "Utilization of Black Walnut," states as follows : "Walnut has never been plentiful in the sense that large amounts of the timber were available in any one locality. Its scattered growth is the reason for this. The exhaustion of the available supply has been repeatedly announced. Nevertheless, during the war large quantities were discovered that no one thought existed, and many lots of large-size trees were found that were...
Página 83 - Only the solid portion of the stump can be used, and the base should be squared off by sawing. The root spurs along the side of the stump should be cut off nearly flush with the surface of the trunk. (PI. XIV, fig. 1.) The roots are sometimes used for hatracks and coat racks, for hall trees, and for couch legs. Crotches are often of value and should be cut about the same length as stump wood. Walnut logs are usually measured bjr the Doyle log rule.
Página 6 - Avood in cross section at different magnifications. The pith rays are narrow and can not be seen without the aid of a hand lens. The structure of butternut wood closely resembles that of black walnut, but the wood of the former may be distinguished from the wood of the latter by its light chestnut-brown color. INSECT AND FUNGUS ATTACK.
Página 70 - Eed gum is a suitable wood for small rifles, but not for long army rifles, on account of its tendency to warp and twist. A considerable amount of walnut is used in the manufacture of air rifles, chiefly in Michigan. Manufacturers of air rifles do not require such thick material as is used for the military rifle. The wooden stock of the air rifle usually consists of a comparatively small piece forming only the butt.