Wood, Paper, and Glass Transformed 191 



and heavy coats. The bark is shredded and mixed with re- 

 claimed or pure wool. 



The "Teco" ring, whose name comes from the Timber 

 Engineering Company, is favored to bring a revival of timber 

 as a structural material. A bolt alone will not serve to hold 

 two heavy timbers together. This is where the Teco ring 

 comes in. This metal ring is sunk into both pieces of timber 

 and a bolt then is put through the center. The ring distributes 

 the stresses in the connection over a wider area, and all the 

 bolt has to do is hold the timbers together. Companies using 

 the Teco ring have set several records on construction jobs 

 for the Army and Navy. 



The use of the Teco ring greatly strengthens wood joints 

 and permits wood to be utilized in building huge warehouses, 

 bridges, and airplane hangars that otherwise would require 

 steel. Teco is expected to help wood recapture some of the 

 construction market it has lost to steel. 



Neiv Treatments for Neiu Tensile Strengths 



Plywood, narrow strips of veneer glued together with syn- 

 thetic resins which are waterproof and fungusproof, and heat- 

 and cold-resistant, will play an important part in postwar 

 homes. These "wood-and-glue sandwiches" are stronger than 

 solid steel per unit of weight. The Gunnison Housing Cor- 

 poration uses a plywood and plastic panel that will take about 

 any kind of punishment that nature or man can deal out. 

 Flood waters, blows from metal objects, and boiling water 

 make no impression on these panels. 



Plastic-bonded plywood and impregnated and compreg- 

 nated woods are water-, fire-, oil-, and weather-resistant. They 

 are stronger pound for pound than aluminum or steel. Wood 

 and wood plastics are used for United States gliders, training 

 planes, and cargo transports. Britain's famed Mosquito bomber 



