Search Results
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Upper level of nylon 66 salt kettle
- 1937-Mar-26
General view of the upper level of the salt kettle used in the production of nylon 66 during the early stages of nylon production and research at the DuPont Experimental Station in Wilmington, Delaware. During the…
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First drawing machine at DuPont Buffalo plant
- 1937-Nov-05
General view of the first drawing machine used at DuPont's Buffalo plant during the early stages of nylon production and research. In this technique, which generally was unsuccessful, undrawn yarn was pre-twisted by the…
- Subject Nylon, E.I. du Pont de Nemours & Company, Machinery
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General view of the salt kettle preparation area
- 1937-Mar-26
General view of the salt kettle preparation area used during the early stages of nylon production and research at the DuPont Experimental Station in Wilmington, Delaware. During the production of nylon, adipic acid and…
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First drawing machine at DuPont Buffalo plant
- Circa 1936
Overhead view of the first drawing machine used at DuPont's Buffalo plant during the early stages of nylon production and research. In this technique, which generally was unsuccessful, undrawn yarn was pre-twisted by…
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First drawing machine at DuPont Buffalo plant
- Circa 1936
General view of the first drawing machine used at DuPont's Buffalo plant during the early stages of nylon production and research. In this technique, which generally was unsuccessful, undrawn yarn was pre-twisted by the…
- Subject Nylon, E.I. du Pont de Nemours & Company, Machinery
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Spinning machine at DuPont Buffalo plant
- 1936
General view of the spinning machine used at DuPont's Buffalo plant during the early stages of nylon production and research. This spinning machine, which was operated by Don Hull and George Lewis, was subsequently…
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Rayon doubler and twister
- 1936-Jul-17
General view of the Whitin Machine Works Rayon doubler and twister used during the early stages of nylon production and research at the DuPont Experimental Station in Wilmington, Delaware. This machine predated and…
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Early glass cell for polyamide preparation
- 1935-Apr-12
General view of a glass cell used for the preparation of polyamides during the early stages of nylon production and research at the DuPont Experimental Station in Wilmington, Delaware. Predating the autoclave developed…
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2 items
Demonstration of cold-drawing technique for polyester
- Circa 1930
Two close-up views of a demonstration of the cold-drawing technique used to produce the 3-16 polyester super-silk fiber, the forerunner of nylon. This technique was discovered by DuPont chemist Julian Hill (1904-1996)…
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Improved gas pressure spinner
- 1937-Mar-25
General view of an improved gas pressure spinner used during the early stages of nylon production and research at the DuPont Experimental Station in Wilmington, Delaware. This spinner unit was the first heated by…
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First gas pressure spinner and windup
- 1935-Mar-29
General view of the first gas pressure spinner and windup used during the early stages of nylon production and research at the DuPont Experimental Station in Wilmington, Delaware. The spinning machine consists of a…
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Improved gas pressure spinner and windup
- 1935-Jul-03
General view of an improved gas pressure spinner and windup used during the early stages of nylon production and research at the DuPont Experimental Station in Wilmington, Delaware. In this iteration, a spinning machine…
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Joseph Labovsky at DuPont Experimental Station
- 1935
General view of Joseph X. Labovsky seated at a work bench in the "66" laboratory at the DuPont Experimental Station located in Wilmington, Delaware. Labovsky's colleague, Micky McGuire, is visible on the left-hand side…
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The "Romance" of Dry Cleaning
- 1939
Color print advertisement for Dowclene synthetic solvents manufactured and sold by the Dow Chemical Company for use in dry-cleaning, among other applications. The advertisement depicts the delivery of a freshly-cleaned…
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2 items
Chemcraft Chemical Outfit No. 5
- Circa 1935
Chemistry sets reached their heyday in the 1950s, but production of them began in the United States during World War I. Playing with a toy chemistry set inspired many a boy to become a chemist, and not until the late…
- Manufacturer Porter Chemical Company
- Subject Chemistry sets, Porter Chemical Company
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Results of an experiment to determine if corn can use ammonia nitrogen
- 1927-Jul-26
General view of culture samples used for an experiment to determine if corn growing under sterile conditions can use ammonia nitrogen. This experiment was conducted at the U.S. Department of Agriculture's Fixed Nitrogen…
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Apparatus for studying the structure of molecules
- 1930-Jan-08
General view of an apparatus used to study the structure of molecules by means of the Raman effect using a three-glass prism Steinheil Spectrograph. This apparatus was used at the U.S. Department of Agriculture's Fixed…
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2 items
Pumps and coolers at Urea Plant
- 1930-Jan-08
Two views of the liquid ammonia and carbon dioxide pumps and coolers at the Fixed Nitrogen Research Laboratory's Urea Plant. In the production of fertilizer, liquid carbon dioxide and liquid ammonia are commonly…
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2 items
Dr. F.E. Allison studying the fixation of nitrogen by bacteria
- 1926-Apr
Two views of Dr. F.E. Allison studying the fixation of nitrogen by bacteria at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research Laboratory…
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2 items
Apparatus for oxidizing ammonia
- 1926-Apr
Two views of an apparatus used to oxidize ammonia with pure oxygen using bed catalysts at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The individual visible in the…
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2 items
Construction of phosphoric acid furnace
- 1930-May-28
Two views of the construction of the phosphoric acid furnace at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. This furnace was used to make phosphoric acid through…
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5 items
Experimental blast furnace at the Fixed Nitrogen Research Laboratory
- 1930-Mar-21
Assorted views of slag being tapped from the experimental blast furnace at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The individuals visible in the photographs…
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2 items
Exterior view of the Fixed Nitrogen Research Laboratory
- 1926-Apr
Two views of the exterior of the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory facility located at American University near Washington, D.C. The Fixed Nitrogen Research Laboratory (F.N.R.L.) was…
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2 items
Apparatus used to oxidize ammonia
- Circa 1928
Two views of an apparatus used to oxidize ammonia at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established…
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2 items
Dr. E.D. Crittenden with apparatus for testing of catalysts
- 1926-Apr
Two views of Dr. E.D. Crittenden with an apparatus used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory to test catalysts at 1 to 100 atmospheres of pressure. Key components of the apparatus…
