Servlee ls 0ar Stoek ln lrade

Expert Hondling ond Drying of Your lumber-Fost ServiceNEW ond MODERN FACIIITIES-INCREASED CAPACITY

These qre but s fewof the mony feqtures

Ofiered By

L. A. DRY KTLN & STOR,A@E, INC.

4261 Sheilq 51., Los Angeles, Cqlif.

Dee Essfey, pres. ANgelus 3-6273 tlorshall Edwqrds, Supt.

Ntrt[A to Spur Promotion in | 956

(Continued from Page 28) display of special exhibits designed to encourage an expansion of industry research activities.

TECO Shows Improved Wood Products

The exhibits, sponsored by the Timber Engineering Company, suggested new and improved wood products for development through research. Many of the research projects touched on by the exhibits would provide new outlets for what are now largely "undesirables," or waste materials, connected with wood product manufacture.

Lumbermen and others at the meeting showed particular interest in the demonstration of new equipment for ultrasonic testing of wood.

"DURO" BRoNzE

"DUROID' Elcctro Galvcnizcd "DURALUM" Cladded Aluminum

Pmilic Uire Products Co.

The device, an electronic transmitter and receiver, sends out electronic impulses which are converted into sound waves by a piece of. quartz. The sound waves penetrate and, in effect, X-ray the wood being tested' What they find is relayed to a cathode ray tube with a slightly jagged horizontal line. When the sound waves come across something out of the ordinary in the wood-a knot, void or split, for instance-there is a sharp variation in the horizontal line' The sound waves point up imperfections in the wood whether they're visible or hidden.

TECO research experts explained that this technique could bring about automatic stress grading of lumber. They said ultrasonics also may have practical application in measuring the smoothness of furniture surfaces and testing the glue lines in plywood and laminated timbers.

Two new chairmen of standing committees were elected