Search Results
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2 items
Letter from Arnold O. Beckman to Dr. Donald H. Loughridge
- 1953-Dec-03
In response to Donald Loughridge's complaints about the performance of the IR-2T spectrophotometer, Arnold Beckman defers to general sales manager W. H. Steinkamp and expresses confidence that he will bring the…
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2 items
Letter from Allen S. Hussey to Arnold O. Beckman
- 1954-Apr-30
Allen Hussey, the director of Northwestern University's chemical laboratories, discusses the frequent breakdowns of the IR-2T spectrophotometer, the practical and ethical barriers to selling it to recoup expenses, and…
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2 items
Daniel W. Fox Collection
The objects in this collection consist of sample sets of Lexan, the brand name for a polycarbonate resin thermoplastic. Daniel W. Fox is credited as the inventor of Lexan while working as a lab chemist with the General…
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2 items
Product Sample (Plastic amalgamation)
- Undated
Irregularly-shaped piece of foam-like silver plastic; pieces of twisted copper wire are holding some portions together; bottom has a wax or glue-like material coating it; some areas have a blackened, charred appearance.
- Subject Plastics, Plastics industry and trade
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7 items
Notes on the development of the glucose analyzer
- 1960s
The notes, which appear to be written in the same hand, may have been authored by James C. Sternberg.
The Glucose Analyzer was developed by James Sternberg in 1969 and was one of several very successful medical…
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Letter from David Silverman to James C. Sternberg
- 1966-Mar-21
This memorandum represents an early discussion of the development of the glucose analyzer, including the potential of an implanted capsule to maintain insulin levels and the Helipot microcircuitry expertise that could…
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Beckman Model 61PH Potentiometer
- 1965-Apr-22
Potentiometers regulate the flow of electricity, like the volume dial on a radio. In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use…
- Photographer Hesketh, Dean D.
- Subject Potentiometer, Beckman Instruments, Inc.
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Beckman Model 61SB Potentiometer
- 1965-Apr-22
Potentiometers regulate the flow of electricity, like the volume dial on a radio. In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use…
- Photographer Hesketh, Dean D.
- Subject Potentiometer, Beckman Instruments, Inc.
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Beckman Series 63, Model 63L Potentiometer
- 1950 – 1969
Potentiometers regulate the flow of electricity, like the volume dial on a radio. In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use…
- Photographer Armstrong & Hess
- Subject Potentiometer, Beckman Instruments, Inc.
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Beckman Model 61SK Helitrim trimming potentiometer
- 1965-Mar
Potentiometers regulate the flow of electricity, like the volume dial on a radio. In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use…
- Photographer Hesketh, Dean D.
- Subject Potentiometer, Beckman Instruments, Inc.
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Beckman Model 62P Potentiometer
- 1950 – 1969
Potentiometers regulate the flow of electricity, like the volume dial on a radio. In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use…
- Photographer Armstrong & Hess
- Subject Passive components, Potentiometer, Beckman Instruments, Inc.
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Beckman Model 62P Potentiometer
- 1950 – 1969
Potentiometers regulate the flow of electricity, like the volume dial on a radio. In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use…
- Photographer Hesketh, Dean D.
- Subject Passive components, Potentiometer, Beckman Instruments, Inc.
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Beckman Models 61SB, 61P, 61PA, 61SG
- 1965-Jul
In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use in his popular pH meter. The precision of this dial caught the eye of the MIT…
- Photographer Dietrich, T. A.
- Subject Passive components, Beckman Instruments, Inc.
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Helitrim Model 61PA potentiometers with coin
- 1950 – 1969
This photograph is part of a series of marketing images used to demonstrate the small size of Helipot products, here by way of popcorn and unpopped kernels.
Potentiometers regulate the flow of electricity, like the…
- Photographer Armstrong & Hess
- Subject Coins, Potentiometer, Beckman Instruments, Inc.
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Beckman Model 61 Potentiometer (Cermet Screening)
- Circa 1966
This photograph is part of a series documenting the manufacturing processes Beckman Instruments used to produce electronic components. The photographs, and a detailed description of cermet trimmer fabrication, appeared…
- Photographer Herb Radin and Associates
- Subject Manufacturing processes, Ceramic metals, Potentiometer, Beckman Instruments, Inc.
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Steatite Ingredients Being Weighed
- Circa 1966
This photograph is part of a series documenting the manufacturing processes Beckman Instruments used to produce electronic components. The photographs, and a detailed description of cermet trimmer fabrication, appeared…
- Photographer Herb Radin and Associates
- Subject Talc, Manufacturing processes, Ceramic metals, Beckman Instruments, Inc.
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Steatite Granulation Process
- Circa 1966
This photograph is part of a series documenting the manufacturing processes Beckman Instruments used to produce electronic components.
- Photographer Herb Radin and Associates
- Subject Talc, Manufacturing processes, Granular materials, Beckman Instruments, Inc.
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Helitrim Models 61SB & 61SG trimming potentiometers (exploded view)
- 1950 – 1969
Potentiometers regulate the flow of electricity, like the volume dial on a radio. In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use…
- Subject Potentiometer, Beckman Instruments, Inc.
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Helitrim Model 61 trimming potentiometer
- 1950 – 1969
Potentiometers regulate the flow of electricity, like the volume dial on a radio. In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use…
- Subject Potentiometer, Beckman Instruments, Inc.
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Beckman Model 61 (Final Firing of Cermet)
- Circa 1966
This photograph is part of a series documenting the manufacturing processes Beckman Instruments used to produce electronic components. The photographs, and a detailed description of cermet trimmer fabrication, appeared…
- Photographer Herb Radin and Associates
- Subject Tunnel kilns, Manufacturing processes, Ceramic metals, Potentiometer, Beckman Instruments, Inc.
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Cermet elements for Beckman Helitrim trimming potentiometers
- 1950 – 1969
Potentiometers regulate the flow of electricity, like the volume dial on a radio. In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use…
- Photographer Armstrong & Hess
- Subject Ceramic metals, Potentiometer, Beckman Instruments, Inc.
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Beckman Model 62 Potentiometer (Final Assembly)
- Circa 1966
This photograph is part of a series documenting the manufacturing processes Beckman Instruments used to produce electronic components. The photographs, and a detailed description of cermet trimmer fabrication, appeared…
- Photographer Herb Radin and Associates
- Subject Manufacturing processes, Ceramic metals, Potentiometer, Beckman Instruments, Inc.
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Beckman Model 61 & 62 Potentiometers (RT Check)
- Circa 1966
This photograph is part of a series documenting the manufacturing processes Beckman Instruments used to produce electronic components. The photographs, and a detailed description of cermet trimmer fabrication, appeared…
- Photographer Herb Radin and Associates
- Subject Manufacturing processes, Potentiometer, Beckman Instruments, Inc.
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Steatite Granulation Process
- Circa 1966
This photograph is part of a series documenting the manufacturing processes Beckman Instruments used to produce electronic components. The photographs, and a detailed description of cermet trimmer fabrication, appeared…
- Photographer Herb Radin and Associates
- Subject Talc, Manufacturing processes, Ceramic metals, Granular materials, Beckman Instruments, Inc.
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High Temperature Firing of Steatite Chip
- Circa 1966
This photograph is part of a series documenting the manufacturing processes Beckman Instruments used to produce electronic components. The photographs, and a detailed description of cermet trimmer fabrication, appeared…
- Photographer Herb Radin and Associates
- Subject Manufacturing processes, Ceramic metals, Beckman Instruments, Inc.
