Search Results
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4 items
Hearth and crucible of No. 2 experimental blast furnace
- 1933-Jun-23
Four views of the hearth and crucible of the No. 2 experimental blast furnace at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The photographs show the hearth and…
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Flushing No. 2 experimental blast furnace at night
- 1932-Oct-12
General view of the flushing of the No. 2 experimental blast furnace 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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Opening cinder-notch on No. 2 experimental blast furnace
- 1932-Oct-12
General view of workers opening the cinder-notch on the No. 2 experimental blast furnace on a burden (a load, especially a heavy one) of phosphate at the U.S. Department of Agriculture's Fixed Nitrogen Research…
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No 2. experimental blast furnace on burden of phosphate
- 1932-Oct-12
General view of the No. 2 experimental blast furnace on a burden (a load, especially a heavy one) of phosphate at a U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory plant.
The Fixed Nitrogen Research…
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Carbon tube precipitator and spray tower
- 1932-Jan-19
General view of the carbon tube precipitator and spray tower for the experimental blast furnace at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen…
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2 items
Interior of Engine Room at the Fixed Nitrogen Research Laboratory
- 1932-Jan-19
Two views of the interior of the Engine Room at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory, with both full and partial views of the blowing engines for the experimental blast furnace.
The…
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Superstructure of No. 2 experimental blast furnace
- 1932-Jan-19
General view of the superstructure of the No. 2 experimental blast furnace, as seen from the platform of the No. 1 precipitator at a U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory plant.
The Fixed…
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2 items
Royster stoves at the No. 2 experimental blast furnace
- 1932
Two views of the Royster stoves used for the No. 2 experimental blast furnace at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. According to notations accompanying…
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2 items
No. 2 experimental blast furnace
- 1932-Jan-19
Two views of the No. 2 experimental blast furnace at a U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory plant. The individuals visible in the first photograph are identified (left to right) as Reilly;…
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2 items
General view of No. 2 furnace and stock piles
- 1932-Jan-19
Two views of the No. 2 furnace and stock piles at a U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory plant. The stock piles likely contained a mix of raw material, including greensand, leucite, coke,…
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Travis P. Hignett with blowing engines for experimental blast furnace
- 1930-Mar-21
General view of Travis P. Hignett examining blowing engines for the experimental blast furnace at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen…
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3 items
Tapping slag from experimental blast furnace
- 1930-Mar-21
Three views of Mr. Royster (left) and Travis Hignett (right) tapping slag from the experimental blast furnace at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. Mr.…
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2 items
Letter from Arnold Beckman to I. H. Lyons
- 1937-Aug-21
The letter was written during a multi-city trip, most likely in Pittsburgh or New York. Beckman discusses the cases of the instruments, and his desire to replace metal cases with wood; pricing of the instruments; and…
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2 items
Letter from Arnold Beckman to I. H. Lyons
- 1937-Aug-17
The letter discusses Beckman's scheduled meetings, marketing strategies for the pH meter, and interest in postal meters.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the…
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Portrait of George O. Curme, Jr. (1888-1976)
- 1930s – circa
Portrait of George O. Curme, Jr. (1888-1976), popularly known as the father of ethylene and for his pioneering work on applications for by-products of petroleum processing.
Born in Mount Vernon, Iowa on December 24,…
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L'Insectoline
- Circa 1930
Color print cardboard poster for L'Insectoline DDT. A boy is using the product to kill a variety of insects.
- Contributor Imp. F. van buggenhoudt
- Subject Pests--Control, Pesticides, DDT (Insecticide), Insecticides
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Rod spinner arranged for production of bristles
- 1937-Mar-23
General view of a rod spinner arranged for the production of bristles during the early stages of nylon production and research at the DuPont Experimental Station in Wilmington, Delaware. During production, a cylindrical…
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3 items
Letter from Clare Evans to Arnold O. Beckman
- 1937-Aug-26
In this letter, Evans discusses a new electrode design for use in Beckman pH meters.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an…
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2 items
Letter from Arnold O. Beckman to J. J. Murdock
- 1935-Sep-30
The letter discusses shipment of wheat germ, expenses; demonstrations of the acidimeter at the Pennsylvania General Hospital, University of Pennsylvania, the Department of Agriculture, and the Bureau of Standards;…
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2 items
Letter from Arnold O. Beckman to I. H. Lyons
- 1935-Aug-29
Regarding Beckman's business travels to meet with two potential acidimeter distributors, Central Scientific Co. and Sargent Co.
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH…
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2 items
Letter from Arnold O. Beckman to I. H. Lyons
- 1935-Aug-29
Regarding Beckman's business travels to meet with a potential acidimeter distributor, A. S. Aloe Co., and Drs. Ball and Rodewald at the Washington University in St. Louis.
Dr. Arnold O. Beckman (1900-2004) invented the…
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3 items
Letter from I. H. Lyons to Arnold O. Beckman
- 1935-Jun-23
This letter includes discussion of personnel issues and policies. Lyons expresses approval for the "Beckman Acidimeter" name.
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH…
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3 items
Letter from Arnold O. Beckman to I. H. Lyons
- 1935-Jun-23
In this letter, Beckman discusses acidimeter production, personnel issues, patent applications, and the naming of the instrument.
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH…
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2 items
Letter from Arnold O. Beckman to I. H. Lyons
- 1935-Jun-03
Though unsigned, context indicates that this letter was written by Beckman.
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH meter in 1934 and thus began a long career…
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2 items
Letter from I. H. Lyons to Arnold O. Beckman
- 1935-May-31
Lyons gives Beckman advice about personnel decisions and discusses early sales of the "acidimeter."
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH meter in 1934 and thus began…