Search Results
-
Beckman Acralyzer
- Undated
Acralyzers monitor and record low atmospheric concentrations of oxidants and oxides of nitrogen.
Beckman Instruments, Inc. became interested in measuring, controlling, and fighting air pollution in the late 1940s and…
- Photographer Hesketh, Dean D.
- Subject Scientific apparatus and instruments, Beckman Instruments, Inc., Air--Pollution--Measurement
-
-
Beckman Model 42 UV/Visible Spectrophotometer
- 1980s
Beckman released the Model 42 Clinical Spectrophotometer in 1981.
-
-
Beckman Microzone Plus Membranes
- Circa 1981
Made of cellulose acetate, these membranes were designed for use with Microzone Electrophoresis Systems.
-
Man with Beckman Model 951-A NO/NOx Analyzer
- 1970s
This instrument was used for a wide range of applications, including measuring nitrogen oxides in the atmosphere and in automobile emissions.
Beckman Instruments, Inc. became interested in measuring, controlling, and…
-
Plate 60: Device for raising water from a low place by river current
- 1588
Mechanics: undershot waterwheel; force pump; conical valve; lantern and crown gear; Three-lobed disc cam; bell crank.
-
Plate 59: Single-person-operated device for drawing water from a well
- 1588
Mechanics: horizontal spoked treadwheel; force pump; conical valve; double interrupted crown gears and lantern gear; spur gear and lantern; horizontal working beam.
-
Plate 58: Device for raising water from a river
- 1588
Mechanics: undershot waterwheel; force pump; conical valve; double interrupted crown gears and lantern gear; worm and worm gear; horizontal working beam; bell crank.
-
Plate 55: Device for raising water from a pond by canal current
- 1588
Mechanics: undershot waterwheel; force pump; lantern and crown gear; grooved eccentric cam; bell crank.
-
Plate 57: Device for raising water from a canal
- 1588
Mechanics: undershot waterwheel; force pump; cylinder cam with single lobe; roller guides.
-
Plate 56: Single-person-operated device for drawing water from a well or cistern
- 1588
This device uses a paternoster pump, named for its resemblance to a rosary. Also known as a "rag and chain" pump or a "rubber bucket chain" pump.
Mechanics: hand crank; paternoster chain pump; flywheel.
- Author Ramelli, Agostino, 1531-approximately 1600
- Subject Pumping machinery, Cisterns, Wells, Machinery, Hand pumps
-
3 items
Plate 144: Bridge for crossing a city or fortress moat and scaling its wall
- 1588
Barrels of earth and debris can be thrown into the moat from under the front of the machine as a decoy to distract from the doubled-over bridge, which can be unfolded quickly and unexpectedly.
Mechanics: winch; hand…
-
3 items
Plate 143: Bridge for crossing a city or fortress moat
- 1588
Accordion folded bridge sections can be quickly and unexpectedly rolled out and brought up to the wall.
Mechanics: capstan bars; hand crank; worm and worm gear; lantern and rack; roller guides.
-
3 items
Plate 142: Bridge for crossing a city or fortress moat and scaling its wall
- 1588
Mechanics: winch; worm and worm gear; lantern and rack.
-
Plate 140: Bridge for crossing a city or fortress moat and scaling its wall
- 1588
Plate oriented in landscape format. Barrels of earth and debris can be thrown into the moat via an opening in the front of the machine as a decoy to distract from the doubled-over bridge, which can be unfolded quickly…
-
3 items
Plate 141: Bridge for crossing a city or fortress moat and scaling its wall
- 1588
Mechanics: hand crank; worm and worm gear; lantern and rack; roller guides.
-
Plate 139: Machine for removing excavated earth from a ditch
- 1588
Mechanics: hand crank; chain of buckets.
- Author Ramelli, Agostino, 1531-approximately 1600
- Subject Machinery
-
Plate 138: Machine for removing excavated earth from a ditch
- 1588
Mechanics: horse whim.
- Author Ramelli, Agostino, 1531-approximately 1600
- Subject Machinery
-
Plate 137: Mill to run bellows in double iron forge, powered by canal current
- 1588
The parallel reciprocating bars used in this device are also known as stangenkunst.
Mechanics: undershot waterwheel; machine crank; bell crank; parallelogram linkage; parallel reciprocating bars.
-
Plate 136: Timber sawmill to cut wood and make boards, powered by canal current
- 1588
Mechanics: undershot waterwheel; machine crank; bell crank; roller guides.
- Author Ramelli, Agostino, 1531-approximately 1600
- Subject Water-power, Sawmills, Machinery
-
Plate 134: Sawmill to cut marble and stone, powered by horse
- 1588
Mechanics: horse whim; machine crank; spur gear and lantern; lantern and crown gear; parallelogram linkage.
- Author Ramelli, Agostino, 1531-approximately 1600
- Subject Sawmills, Machinery
-
Plate 135: Double mill to grind grain and cut stone, powered by channel current
- 1588
Mechanics: overshot waterwheel; horizontal waterwheel; machine crank; spur gear and lantern; worm and worm gear; lantern and crown gear.
-
Plate 133: Windmill
- 1588
Complete structure can be rotated by rudder to catch optimal wind. Sails can be stopped and secured. Contains mechanism to lift grain sacks.
Mechanics: windmill (post mill); lantern and crown gear.
-
Plate 132: Windmill
- 1588
Cap with sales can be rotated by rudder to catch optimal wind.
Mechanics: windmill (tower mill); lantern and crown gear; roller thrust bearing.