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Start Over You searched for: Date 1930 to 1939 Remove constraint Date: <span class="from" data-blrl-begin="1930">1930</span> to <span class="to" data-blrl-end="1939">1939</span>-
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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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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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
Thermostated agitating device
- 1930-Jan-08
Two views of a thermostated agitating device with an all-glass system used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The term "thermostated" refers to a…
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Constant Humidity Room at the Fertilizer Machinery Laboratory
- Circa 1935
General view of assorted equipment and apparatus in the Constant Humidity Room at the the U.S. Department of Agriculture's Fertilizer Machinery Laboratory located at the Arlington Experimental Farm in Rosslyn…
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3 items
Interior of Engine Room at the Fixed Nitrogen Research Laboratory
- 1932-Jan-19
Three views of the Engine Room at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. showing assorted machinery and apparatus.
The Fixed Nitrogen Research Laboratory…
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Apparatus at Fixed Nitrogen Research Laboratory
- 1930s
General view of an unidentified apparatus, possibly a pump or compressor, used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research…
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Fertilizer testing apparatus mounting frame and driving mechanisms
- 1935
Close-up view of the mounting frame and driving mechanisms of the fertilizer distribution testing apparatus used in the U.S. Department of Agriculture's Fertilizer Machinery Laboratory located at the Arlington…
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Constant Humidity Room at the Fertilizer Machinery Laboratory
- Circa 1935
General view of assorted equipment and apparatus in the Constant Humidity Room at the the U.S. Department of Agriculture's Fertilizer Machinery Laboratory located at the Arlington Experimental Farm in Rosslyn…
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Indoor soil track at Fertilizer Machinery Laboratory
- 1935
General view of the indoor soil track used in the U.S. Department of Agriculture's Fertilizer Machinery Laboratory located at the Arlington Experimental Farm in Rosslyn [Arlington], Virginia. Measuring 9 feet wide by 70…
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Air-conditioning equipment at Fertilizer Machinery Laboratory
- 1935
General view of the air-conditioning equipment used in the U.S. Department of Agriculture's Fertilizer Machinery Laboratory located at the Arlington Experimental Farm in Rosslyn [Arlington], Virginia. This particular…
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Fertilizer distribution testing apparatus
- 1935
General view of the fertilizer distribution testing apparatus used in the U.S. Department of Agriculture's Fertilizer Machinery Laboratory located at the Arlington Experimental Farm in Rosslyn [Arlington], Virginia. The…
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Machine shop at the Fertilizer Machinery Laboratory
- 1935
General view of the machine shop at the U.S. Department of Agriculture's Fertilizer Machinery Laboratory located at the Arlington Experimental Farm in Rosslyn [Arlington], Virginia. Established by an act of Congress in…
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2 items
Parts of an apparatus used to grow higher plants in a sterile medium
- 1930-Jan-08
Two views of the component parts of an apparatus used to grow higher plants in a sterile medium at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen…
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Apparatus for studying the mechanism of nitrogen fixation
- 1930-Jan-08
General view of an apparatus used for the spectroscopic study of the mechanism of nitrogen fixation in the electric arc at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington,…
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Assembly of apparatus for sterile plant cultures
- 1930-Jan-08
Close-up view of the assembly of an apparatus used for sterile cultures of taller green plants at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen…
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Dr. Burk and Mr. Lineweaver with microapparatus for studying bacterial nitrogen fixation
- 1930-Jan-08
General view of the microapparatus and assorted laboratory equipment used to study bacterial nitrogen fixation at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.…
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Hydraulic pump at the Fixed Nitrogen Research Laboratory
- 1930-Jan-08
General view of the hydraulic pump used to perform steel corrosion tests 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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Lime glass tube
- 1930-Jan-08
Close-up view of a lime glass tube, part of an apparatus used to investigate the thermionic emission from platinum films sputtered on glass at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory…
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Apparatus for studying the absorption spectrum of ozone
- 1930-Jan-08
Close-up view of an apparatus used to study the absorption spectrum of ozone in visible and photographic infra red. This apparatus was used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory…
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Apparatus for studying the absorption spectrum of ozone
- 1930-Jan-08
General view of an apparatus used to study the absorption spectrum of ozone in visible and photographic infra red. This apparatus was used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory…
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Apparatus for determining the solubility of gases in water
- 1930-Jan-08
General view of an apparatus used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory to determine the solubility of gases in water at various temperatures and pressures up to 1,000 atmospheres.
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