Written on back: "Machine for testing steel at high temperatures at U.S. Bureau of Standards, Washington, D.C. (Dr. H.J. French in charge, assisted by A.L. Meyer at that time metallurgical engineers Lukens Steel Co.)"
Written on back: "View of Testing Laboratory, Lukens Steel Co. showing men at work and test specimens of steel ready to be tested. some specimens of thick plate steel which have been bent are shown in the foreground."
Written on back: "Machine for testing steel at high temperatures at U.S. Bureau of Standards Washington, D.C. (Dr. H.J. French in charge assisted by A.L. Meyer at that time Metallurgical Engineer Lukens Steel Co.)"
Physical testing of Acele acetate rayon to determine denier, or weight, as conducted at the Waynesboro, Virginia plant of E.I. du Pont Nemours & Company.
Partial view of the DuPont Film Department's sales development and technical service laboratory at Chestnut Run near Wilmington, Delaware. Shows some of the equipment used in testing cellophane and other films.
The analyst is testing the moisture content of cigarettes. Determining the moisture content of many products wrapped in cellophane forms an important part of the work done n the DuPont Film Department's sales development and technical service...
This is the newest type of multiple testing machine which examines all finished pyroxylin coated fabrics for resistance to abrasion at the Newburg, New York plant.
Testing for color fastness with heat and ultra violet radiation are made by the fade-o-meter on pyroxylin coated fabrics at the Newburgh, New York plant. Seventy-two hours of the exposure in the fade-o-meter are equivalent to about two years of...
Testing pigmented plastics at DuPont's new Pigments Sales Service Laboratory. Here operator loads plastic resin into an extruder, while extruded plastic material is cooled in water bath at lower left. In this operation pigment in the plastic is...
In testing fabrics for the fastness of dyes in washing, special soaps and soda ash solutions are used. The fabrics are checked for 'bleeding' or running dyes. Fabrics are also laundered in accordance with commercial laundry standards and are given...
Materials testing in the Engineering Research Laboratory at DuPont's Experimental Station is a key factor in equipment development. Here a technician quenches a heat treated steel bar in a bath of oil before testing its strength.
