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Groups, By State - Wisconsin

Airplanes - Wings - Designs and tests of airplane ribs. Strength tests on 15-foot airplane wing ribs, Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Tests of plywood in aeroplane construction, Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Testing aeroplane wings. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Forest Products Laboratory for Research Work during the war. Illustrating the development in designing a wing rib for De Haviland airplane. The improved wing rib as designed is 30 per cent light in weight and has more than twice the strength of the original rib of the Government Forest Service

Airplanes - Instruments - Impact testing machine in aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Designs and tests of airplane ribs. Strength tests on 15-foot airplane wing ribs, Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Drying aeroplane wing beams. One of 24 Signal Corps water spray dry kilns at Vancouver Bks. Forest Products Laboratory assisted in design, construction and operation of these kilns. Forest Products Laboratory, Madison, Wis

Airplanes - Propellers - Laying off and sawing aeroplane propeller laminations. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Torsion tests of veneer tubes for aeroplanes. Forest Products Laboratory, Madison, Wis

Airplanes - Propellers - Propeller coated with aluminum leaf. Two areoplane propellers coated with aluminum leaf. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Flexibility of plywood in aeroplane wings. Test designed to show strength of plywood under service conditions. Repeated bending for a period of 30 hours failed to show any signs of failure. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Tension teset at right angles to grain in aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Design and tests of aeroplane wing ribs. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Tests of plywood fastenings for aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Cleavage test in aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Aeroplane wing beam splices. Forest Products Laboratory, Madison, Wis

Airplanes - Struts - Strength test of aeroplane struts. Forest Products Laboratory, Madison, Wis

Airplanes - Propellers - A propeller storage room. Forest Products Laboratory, Madison, Wis

Airplanes - Miscellaneous - Carpenter shop, Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Aeroplane wing beam splices. Forest Products Laboratory, Madison, Wis

Airplanes - Struts - Testing an aeroplane strut in cross bending. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Column bending of plywood in aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Forest Products Laboratory for Research Work during the war. Method of testing wing rib. In this method the loads are applied in such a way as to simulate conditions during flight. Of the Government Forest Service

Airplanes - Wings - Designs and tests of airplane ribs. Strength tests on 15-foot airplane wing ribs, Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Vibration tests of plywood for aeroplane construction. Forest Products Laboratory, Madison Wis

Airplanes - Instruments - Tests of plywood fastenings for aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Designs and tests of aeroplane wing ribs. Madison, Wisconsin, Forest Products Laboratory

Airplanes - Propellers - Forest Products Laboratory for research work during the war. Measuring change in blade angle of propeller which has been subjected to high humidity of Government Forest Service. U. S. Dept of Agriculture

Airplanes - Struts - Continuous loading aeroplane struts. Test showed that if stress is continued for a considerable length of time, strut may collapse under about 80% of load sustained in the usual strut test. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Impact bending of wood in aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Designs and tests of airplane wing ribs. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Standard shearing test in aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Struts - Tests of aeroplane struts. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Designs and tests of airplane ribs. Strength tests on 15-foot airplane wing ribs, Forest Products Laboratory, Madison, Wis

Chemical Warfare Service - Equipment - Making charcoal for gas masks at Forest Products Laboratory, Madison, Wisconsin

Airplanes - Wings - Interior assembly of plywood wing for aeroplanes. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Design and tests of aeroplane wing ribs. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Aeroplane wing beam splices. Forest Products Laboratory, Madison, Wis

Chemical Warfare Service - Equipment - Making charcoal for gas masks at Forest Products Laboratory, Madison, Wisconsin

Airplanes - Struts - Struts wrapped with bakelized canvas. In experimenting with struts for aeroplanes, better results were obtained with plain spruce struts of the same total width as the bakelized struts. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Design and tests of aeroplane wing ribs. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Method of testing aeroplane engine bearers for vertical loading. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Testing aeroplane wing beams. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Design and tests of aeroplane wing ribs. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Forest Products Laboratory for research work during the war. These engine bearers built of plywood, support the engine in airplane. Of the Government Forest Service

Airplanes - Instruments - Testing of thin plywood in aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Method of testing a large aeroplane wing beam. Forest Products Laboratory, Madison, Wis

Airplanes - Propellers - Measuring the blade angles of an aeroplane propeller. Forest Products Laboratory, Madison, Wis

Airplanes - Propellers - Appearance of aeroplane propellers at different stages in the manufacturing process. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Shearing tests of plywood in aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Hardness test in aeroplane construction, Forest Products Laboratory, Madison, Wis

Airplanes - Materials - Pitch pockets in wood for aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Tests of thin plywood in aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Design and tests of aeroplane wing ribs. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Cross sections of wing beams. Aeroplane construction, Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Strength test of aeroplane wing beams. Forest Products Laboratory, Madison, Wis

Airplanes - Propellers - Forest Products Laboratory for research work during the war. Corner in experimental propeller shop of the Government Forest Service. U. S. Dept of Agriculture

Airplanes - Wings - Test of aeroplane wing ribs. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Design and tests of aeroplane wing ribs. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Design and testing of aeroplane wing ribs. Madison, Wisconsin, Forest Products Laboratory

Airplanes - Propellers - Carving aeroplane propellers from rough blocks. Forest Products Laboratory, Madison, Wis

Airplanes - Struts - Tests of built-up aeroplane struts. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Compression test parallel to grain in aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Static bending test in aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Cross sections of wing beams. Aeroplane construction, Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Toughness tests of plywood for aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Compression test perpendicular to grain in aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Shear strength of plywood in aeroplane construction. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Aeroplane wing beam splices. Forest Products Laboratory, Madison, Wis

Airplanes - Instruments - Method of testing aeroplane engine bearers for thrust loading. Forest Products Laboratory, Madison, Wis

Airplanes - Struts - Testing aeroplane struts for maximum load. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Testing aeroplane wings. Forest Products Laboratory, Madison, Wis

Airplanes - Propellers - Coating hub hole of propeller with aluminum leaf. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Aeroplane wing beam splices. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Design and tests of aeroplane wing ribs. Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Cross sections of wing beams. Aeroplane construction, Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Designs and tests of airplane ribs. Strength tests on 15-foot airplane wing ribs, Forest Products Laboratory, Madison, Wis

Airplanes - Wings - Forest Products Laboratory for Research Work during the war. Illustrating the development in designing a wing rib for De Haviland airplane. The improved wing rib as designed is 30 per cent light in weight and has more than twice the strength of the original rib, of the Government Forest Service. U.S. Dept. of Agriculture

Airplanes - Propellers - Applying aluminum leaf to aeroplane propeller. Forest Products Laboratory, Madison, Wis