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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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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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
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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Plate 157: Screw-jack for breaking the iron gratings of a portcullis
- 1588
Can be operated by a single person, easily and with little noise.
Mechanics: wrenches.
- Author Ramelli, Agostino, 1531-approximately 1600
- Subject Jackscrews, Machinery
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Plate 39: Petard
- 1660
Fig. 89: Diagram of the proportions of a large petard.
- Engraver Brawe, Hermann
- Publisher Schwänder, Johann Georg
- Subject Ordnance, Explosives, Artillery
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Plate 32: Grenade to be shot from a kartouwe
- 1660
- Engraver Brawe, Hermann
- Publisher Schwänder, Johann Georg
- Subject Ordnance, Grenades, Explosives, Artillery
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21 items
Glucose Analyzer Operating Manual
- Beckman Instructions 83513-B
- 1969-Oct
The Glucose Analyzer was developed by James Sternberg in 1969 and was one of several very successful medical testing and analysis instruments that Beckman Instruments produced in the 1970s. Its size, speed, and price…
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Your finger and our button. The simplest way to count for RIA.
- 1976
Beckman's Biogamma Radioimmuno Analyzer was introduced in 1973. Radioimmunoassay (RIA) is a technique for measuring the antigen concentration. Known quantities of radioactive (labeled or “hot”) antigens and antibodies…
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Beckman Model 106-E Total Hydrocarbon Analyzer meter
- 1960s
Beckman Instruments, Inc. became interested in measuring, controlling, and fighting air pollution in the late 1940s and early 1950s, when company president Arnold O. Beckman became the scientific adviser to the Los…
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3 items
Plate 195: Bridge for crossing a river or moat
- 1588
Bridge composed of a boat, with extensible end sections that can be rolled out if the boat is not as long as the water is wide; additionally, the doubled-over end sections can also be unfolded for extra length.
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Plate 194: Device for setting the aim of artillery
- 1588
A set of two ruled frames is used along with plumb lines and a quadrant to record in daylight the aim of canons to be shot at night. The frames and plumb lines are then used again to aim the canon accurately in the dark…
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Plate 193: Ballista
- 1588
Composed of three large crossbows. Uses tension to launch arrows, pyrotechnic projectiles, and balls of rock, lead, and iron to defend a city or fortress.
Mechanics: hand crank; spur gear and lantern.
- Author Ramelli, Agostino, 1531-approximately 1600
- Subject Ballista, Machinery, Engines of war
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3 items
Plate 192: Ballista
- 1588
Uses tension to launch arrows, pyrotechnic projectiles, balls, and rocks to defend a city or fortress.
Mechanics: roller thrust bearing; projectile throwing engine; trigger.
- Author Ramelli, Agostino, 1531-approximately 1600
- Subject Ballista, Machinery, Engines of war
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3 items
Plate 191: Moveable counterweight trebuchet
- 1588
For launching rocks and fireballs to defend a city or fortress.
Mechanics: hand crank; worm and worm gear; spur gear and recessed face gear; projectile throwing engine.
- Author Ramelli, Agostino, 1531-approximately 1600
- Subject Engines of war, Catapult, Machinery
