USDA invention eases the making of plywood MADISON, Wis. - Listen to the makers of plywood talk about their headaches and you might get the idea they drive racing cars, raise apples or manufacture candy for a living. Words like “spinout,” “large core” and “soft center” figure big in their vocabulary. The reason, says a researcher with the U.S Department of Agriculture, is thal these terms describe three problems that cost this country’s wood products industry millions of dollars each year. Now, says a USDA Forest Service scientist, the shop talk should turn more upbeat. John Youngquist, a research project leader at USDA’s Forest Products Laboratory here, says he and his.so-workers have solved all three problems with one invention. The result, he estimates, can be a savings of $75 million a year to the wood products industry. Since tbe invention can favorably influence plywood production costs as well as sup plies of wood productsT, he said, the prices you pay at the lumber yard may be affected in the long run as commercial producers adopt the T "FAR» SUPPUWHC. R.D. 4, Hanover, Pa. 17331 (717) 632-0402,632-5789 Buyers of Ear & Shelled Corn, Soybeans, Milo, Barley, Wheat - Seilers of Wheat Seed* Milo Seed, Soybean Seed, Liquid Fertilizers, 10-34-0,30-0-0 Nitrogen Solution Chemicals. Custom Spray Application With Full Flotation Equipment Also New Distributor for Snyder vertical tanks for on-farm storage In sizes ranging from 465 to 5,600 gallons technology, ’'“Veneers used in plywood and furniture are made by peeling sheets of wood from high quality logs,” said Youngquist. “Veneers are valuable, so we need to get the most from every log.” Youngquist Said the‘—Forest Service’s solution to spinout, large cores and soft centers is called the “powered backup roll.” Its in ventors "are research engineers Frank Fronczak and John Hunt of USDA’s Forest Products Laboratory here. “Basically, the device is two hydraulically-powered rollers which provide supplementary torque the force needed to turn the log to the outside of logs being peeled for veneer,” Youngquist said. ‘‘Conventional lathes used for peeling logs to produce veneer apply torque directly to the center of the log through tbe use of pronged shafts damped to each end,” he said. “Unf trtunately, about 20 to 35 percent of all logs cannot be peeled because, their centers are too soft to take the pressures produced by lathes. “The powered backup roll I HOG PRODUCERS! | Get Top Price ♦ for Your Hogs at ♦ New Holland X Sold in sorted lots the auction way. 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PEACHEY Star Route, Box 35 Belleville, PA 17004 PH: (717) 483-6714 - LAPP SHARPENING SERVICE Gibble Road, Route 2, Box 276 Myerstown, Pa. 17067 LAPP’S HARDWARE t DAIRY SUPPLIES Box 96, Loop Rd., RD4 Qfuarryville, PA 17566 quid save $75 million yearl eliminates this problem in most cases by reducing the torque on the center of the log and transferring it to the log’s sturdier outside sur face.” Youngqirist said spinout occurs when the force needed to turn the log in the lathe is greater than the force used to grip the ends of the log. When this happens, the wood breaks, the clamplike devices used for gripping the log spin free, and the log becomes useless for veneer. Five to eight percent of the logs selected for veneer production are damaged in this way. Powered backup roll turns the log from its outside surface to greatly reduce the chances of spinout. “Another problem is that a large core of the log often is left on the lathe because the chunks-(prongs) used to grip and turn the log are so big they prevent the log from being peeled near the core,” Youngquist said. “By applying torque to the outside, the device allows smaller ' chunks to be used, thus permitting more veneer to be peeled from each log.” Studies show that the powered SILAGE AND FEED CARTS ' ' A ' ■'£ * i ■ %j>m s.*m * ,-v MANY OTHER SIZES AVAILABLE Vg>' FARM BUREAU Mill Street Dublm, PA 18917 FARM BUREAU 115 Washington Ave. Souderton, PA 18964 PH. (215) 273-4355 ROBERT GUTSHALL RD 1212 Womelsdorf, PA 19567 PH (717)933-4616 CHESTER INGRAM HublersburgßD2 Belletonte, PA 16823 PH (814)383-2798 DELIVERIES available Lancaster Farming, Saturday, November 14,1981—833 backup roll’s potential for reducing the diameter of unused log cores from AVz inches to inches could save the American wood products industry $4O million each year. Eliminating spinout could save another $35 million annually, the researcher said. “One of the best things about this device is that its use has no effect on the quality or thickness of the veneer that is produced,” Youngquist said. “Using Douglas fir logs, we have produced veneers ranging from one-tenth to one thirty-second of an inch thick without any problems. The process also is compatible with most conventional lathes.” A Boise Cascade Corporation Build safety into farm ponds LANCASTER The pond is complete, it has been seeded and is full of water, the job is finished. Not completely...now comes the maintenance and safety part of all ponds, which will last the life of the pond. A pond is constructed for many reasons such as flood prevention, livestock watering, fire protection, or fish production. When a pond is constructed, it is a natural recreation center for those who live near it and it is also often used for swimming, fishing, boating, or skating. The unfortunate feature of a pond is that it is also a body of water in which drownmgs can oc cur. Drowmngs are the outstan ding non-water vehicle cause of ac cidental deaths among people in SAVINGS on pifkige, pier A erection COSTS tON FIGHTERS FRAMED-RITE BUILDINGS, INC. WELSH BUSH RD., FRANKFORT, NY 13340 315-724-5593 CONCRETE SPRAYING SERVICE A PROVEN PRACTICAL WAY OF APPLYING CONCRETE • Repair Retaining Walls • Ressal Manure Pits • Strengthen Existing Masonry • Reseal Silos Wa j| S • Trench Silo Construction ★ Also Concrete Pumping Service For Information Call: KEYSTONE GUNKREIE CO. 43 S. Harvest Road Bird-In-Hand, PA 17505 plywood plant in Yakima, Wash., is giving the powered backup roll a try, Youngquist said. Steve Loehnertz of the Forest Products Laboratory is providing technical assistance in monitoring the ef fectiveness of this first industrial production prototype, which was built by the Premier Gear and Machine Works of Portland, Ore. If the device proves to be as useful as tests indicate, and the originators believe it will, the powered backup roll may become a standard feature of plywood plants in the near future. “We've applied for a patent in the public’s name,” he said. “This would make the device available to everyone.” the active age groups, especially children. These deaths, by drown ing, are due to swimming ac cidents, falls into the water while working or playing on or near bodies of water, and accidents in volving small boats. Sqfety measures that can be built into ponds include evenly grading of spoil areas, avoiding steep slopes and holes in the pond, removing snags, big rocks and trash that could be a hazard to swimmers and boats. Many other safety features can be done by pond owners without much expense. Some of them are life-saving equipment, placed near the pond, warning signs should be placed around the pond, use of good equipment if boating is done. ntional UN-KRETECO. 717-768-3641
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