Page images
PDF
EPUB

The series of printed leaflets of the Forest Products Laboratory, known as Technical Notes and available for free distribution, contain the following titles relating to kiln-drying:

D-5. Correct moisture content of lumber.

D-13. Casehardened lumber and warped products.

D-14. How to accomplish rapid kiln-drying.

124. Materials used in kiln construction.

127. Smoke-making device for testing the circulation in dry kilns.

136. Killing molds on lumber by steaming.

137. A portable electric drier for drying kiln samples.

148. Care and use of the hygrometer in kiln-drying.

156. A convenient humidity table for the wet and dry bulb hygrometer.

161. Progressive and compartment kilns compared.

175. Hardwood and softwood drying schedules.

180. Comparative strength of air-dried and kiln-dried wood.

199. Air circulation in dry kilns.

208. The reversible-circulation internal-fan kiln.

213. The detection and relief of casehardening.

The Forest Products Laboratory also has various reprints and mimeographed documents for free distribution, and in the list of these the following titles relating to kiln-drying are noted:

Effect of kiln-drying on the strength of airplane woods.

Field of kiln-drying.

Kiln-drying of southern pine.

Kiln-drying systems compared.

AIR SEASONING AND HANDLING OF LUMBER

There are no books dealing exclusively with air-drying, but it is given some attention in the following:

The Properties and Uses of Wood. By Arthur Koehler. Price, $3.50. McGraw-Hill Book Co., 1924. Chapter VII is devoted to air-drying and Chapter VIII to kiln-drying.

Lumber. By Ralph Clement Bryant, National Lumber Manufacturers' Association Chair of Lumbering, Yale University. Price, $4.50. John Wiley & Sons, New York City, 1922. The first 20 pages of Chapter X give some practical suggestions on air-drying.

The following Technical Notes of the Forest Products Laboratory relate to air seasoning:

A-1. Hints on storing lumber to prevent decay.

D-10. Piling oak dimension to reduce season checks.

219. Stickering of western softwoods for air seasoning.

Most of the research in air-drying of lumber has been done under a project inaugurated in 1921, work in the far West being conducted by representatives of the Forest Service and in the middle and eastern United States by the staff of the Forest Products Laboratory. The first three surveys listed below are obtainable only from the Timberman, Portland, Oreg., in back numbers or in reprints.

Air Seasoning of Lumber in the Inland Empire. By S. V. Fullaway and E. E. Hubert. The Timberman, March, April, May, and June, 1925.

Air Seasoning of Lumber in the California Pine and Redwood Region. By C. B. Green. The Timberman, October, November, and December, 1925.

Air Seasoning of Lumber in the Douglas Fir Region. By Herman M. Johnson and William H. Gibbons. The Timberman, November and December, 1926, and January, 1927.

The following survey reports were made by staff men of the Forest Products Laboratory:

Air Seasoning of Southern Yellow Pine Lumber. By L. L. DeFlon. Published as a booklet by the Southern Pine Association, 1924. Chiefly a comparison of piling endwise or sidewise to the alley, with little difference in results.

Problems in the Seasoning of Southern Hardwoods. By W. K. Loughborough and E. E. Hubert. Mimeographed report distributed to cooperating manufacturers March 3, 1926. Article by Loughborough with same title also published in Southern Lumberman, December 20, 1924.

Survey of Seasoning Practices in the Northern Hemlock and Hardwood Region. By L. L. DeFlon. Mimeographed booklet with 20 photostat illustrations published November 8, 1926, and distributed to cooperating manufacturers. Air Seasoning of Oak and Sap Gum in the Southern Hardwood Region. By L. L DeFlon. Mimeographed booklet with 35 photostat illustrations published December 1, 1926, and distributed to cooperating manufacturers.

The booklet listed below was written while the author was chairman of the grading rules committee of the Southern Pine Association and gives some original suggestions on yard piling:

Properly Piling Lumber for Seasoning. By J. W. Martin. Booklet by Southern Pine Association, February, 1922.

The list of reprints and mimeographed material for free distribution by the Forest Products Laboratory includes the following titles relating to air seasoning:

Air Seasoning of Southern Yellow Pine Lumber.
Manufacturing and Seasoning of Oak.

Problems in the seasoning of Southern Hardwoods.

Relation of Moisture Content and Drying Rate of Wood to Humidity of the Atmosphere.

Rules for Piling Lumber for Air Seasoning in Order to Prevent Deterioration. For a bibliography of leading periodical articles on air-drying and kiln-drying the reader is referred to the list of publications issued by the Forest Products Laboratory, which lists a large number of such articles, chiefly those written by workers at the laboratory.

о

[graphic]
[graphic]
[graphic]
« PreviousContinue »