Search Results

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  Photographs

  Beckman Model 210 Dial with hand

  • 1950 – 1969

  • Photographer Armstrong & Hess
  • Subject Passive components, Beckman Instruments, Inc.
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  Photographs

  Helipot Model 939-621 Servo

  • 1950 – 1969

  • Subject Servomechanisms, Beckman Instruments, Inc.
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  Photographs

  Helipot Model 9140 Motor Potentiometer

  • 1950 – 1969

  • Subject Potentiometer, Beckman Instruments, Inc.
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  Photographs

  Helipot Servomotor

  • 1950 – 1969

  • Subject Servomechanisms, Beckman Instruments, Inc.
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  Photographs

  210 Dial

  • 1950 – 1969

  • Photographer Herb Radin and Associates
  • Subject Passive components, Beckman Instruments, Inc.
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  Photographs

  RBD, 2600 and RB Duodials

  • 1965-Jul

  Based on the orientation of the inscription, the RBD is the dark dial, the 2600 the small dial, and the RB the large, light dial.

  • Photographer Dietrich, T. A.
  • Subject Passive components, Beckman Instruments, Inc.
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  Photographs

  Helitrim Series 63 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…

  • Photographer Herb Radin and Associates
  • Subject Potentiometer, Beckman Instruments, Inc.
• 
  Vessels (Containers), Glassware

  Roman glass round bottom vase

  • 1 – 200

  Translucent green, glass round-bottomed vase with heavy rainbow luster throughout. Base of the vase is round and then attaches to a vertical tube in the center, top of the tube has an ornamental curved design that…

  • Subject Glass, Glassware, Roman, Glass blowing and working, Glassware
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  10 items
  Collections

  Edelstein Collection

  This collection consists of decorative reliefs and cameos of notable men in science including Joseph Priestley (1733-1804), James Watt (1736-1819), and Jöns Jacob Berzelius (1779-1848). The highlight of this collection…

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  2 items
  Scientific apparatus and instruments

  Bausch & Lomb Spectroscope

  • Undated

  Spectroscope is in the style of the original Bunsen-Kirchhoff design. Triangular glass prism sits on a round, brass dias and is held in place by a metal arm attached to the dias; prism is coated in black paint with only…

  • Manufacturer Bausch & Lomb Optical Company
  • Subject Spectrometer, Bausch & Lomb Optical Company, Spectrum analysis, Spectroscope
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  Records (Documents)

  Report on the fineness of copper

  • After 1849 – before 1887

  Tabulation of data on the fineness of copper (i.e. weight of copper in proportion to the total weight of the metal including impurities and alloy base metals.)

  • Author Booth, James Curtis, 1810-1888
  • Subject Precious metals--Assaying, Copper, Smelting, Copper--Assaying, Metals--Refining, Copper industry and trade, Metallurgy, Copper--Refining, Booth, James Curtis, 1810-1888, Mint of the United States, United States Mint
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  2 items
  Business correspondence

  Letter from James C. Booth to an unidentified "sir"

  • After 1849 – before 1887

  James Curtis Booth (1810-1888) comments on the subject of silver containing selenium. Letter relates to a set of correspondence from the New York Assay Office.

  • Author Booth, James Curtis, 1810-1888
  • Subject Precious metals--Assaying, Copper, Smelting, Silver, Metals--Refining, Silver--Assaying, Mint of the United States, Metallurgy, Copper--Refining, Booth, James Curtis, 1810-1888, Selenium, Silver--Refining, United States Mint
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  2 items
  Records (Documents)

  Report, "No. of ounces of pure silver in disks of different diameters and of one inch thickness"

  • After 1849 – before 1887

  Tabulation of data reporting the number of ounces of pure silver in disks of different diameters and of one inch thickness.

  • Author Booth, James Curtis, 1810-1888
  • Subject Precious metals--Assaying, Smelting, Silver, Metals--Refining, Silver--Assaying, Mint of the United States, Metallurgy, Silver--Refining, Booth, James Curtis, 1810-1888, United States Mint
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  24 items
  Records (Documents)

  Notes on the modes of operating in the Melting and Refining Office of the United States Mint

  • After 1849 – before 1887

  Description of operating procedures in the Melting and Refining Office of the United States Mint. Digitized content does not include page seven because it is not held by the repository.

  • Author Booth, James Curtis, 1810-1888
  • Subject Precious metals--Assaying, Smelting, Metals--Refining, Silver--Assaying, Mint of the United States, Metallurgy, Silver--Refining, Gold--Refining, Booth, James Curtis, 1810-1888, Gold--Assaying, United States Mint
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  Business correspondence

  Note on the consistency of nickel cents

  • 1886-Sep-30

  Description of the production of nickels utilizing nickel and copper.

  • Author Booth, James Curtis, 1810-1888
  • Subject Copper-nickel alloys, Nickel--Metallurgy, Nickel, Copper, Metals--Refining, Mint of the United States, Metallurgy, Booth, James Curtis, 1810-1888, Precious metals--Assaying, United States Mint
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  30 items
  Records (Documents)

  Method of operating in the Melter and Refiner’s Department of the U.S. Mint at Philadelphia

  • After 1849 – before 1887

  Description of operating procedures at the U.S. Mint in Philadelphia.

  • Author Booth, James Curtis, 1810-1888
  • Subject Gold, Zinc, Copper alloys, Metals--Refining, Mint of the United States, Metallurgy, Silver--Refining, Zinc alloys, Gold--Refining, Booth, James Curtis, 1810-1888, Smelting, Precious metals, United States Mint
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  2 items
  Records (Documents)

  Annual Settlement of Melter & Refiner’s Account since 1860

  • After 1860 – before 1887

  Account Statement listing totals for standard ounces of gold melted, actual wastage, and ratio of wasted to melted for the years 1861-1886.

  • Author Booth, James Curtis, 1810-1888
  • Subject Gold, Smelting, Metals--Refining, Mint of the United States, Metallurgy, Precious metals--Refining, Gold--Refining, Booth, James Curtis, 1810-1888, United States Mint
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  2 items
  Records (Documents)

  Settlement of Gold since 1860

  • After 1860 – before 1887

  Account Statement listing totals for standard ounces of gold melted, actual wastage, and ratio of wasted to melted for the years 1861-1886.

  • Author Booth, James Curtis, 1810-1888
  • Subject Gold, Smelting, Metals--Refining, Mint of the United States, Metallurgy, Precious metals--Refining, Gold--Refining, Booth, James Curtis, 1810-1888, United States Mint
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  2 items
  Business correspondence

  Receipt for bullion received by A.L. Snowden from James C. Booth

  • 1886-Mar-26

  Signed by James C. Booth (1810-1888).

  • Author Booth, James Curtis, 1810-1888
  • Subject Smelting, Precious metals, Mint of the United States, Metallurgy, Booth, James Curtis, 1810-1888, United States Mint
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  Records (Documents)

  Cleaning Cents

  • 1885-Oct-16

  Notes on the costs for cleaning and pickling cents with aqua fortis (nitric acid).

  • Author Booth, James Curtis, 1810-1888
  • Subject Nitric acid, Mint of the United States, Metallurgy, Booth, James Curtis, 1810-1888, United States Mint
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  Records (Documents)

  Stock on hand, 4 Nov. 1885

  • 1885-Nov-04

  Statement of stock owned by James C. Booth, including the Lehigh Valley Railroad Company, Lehigh Navigation Company, and the Westmoreland Coal Company.

  • Author Booth, James Curtis, 1810-1888
  • Subject Lehigh Navigation Company, Westmoreland Coal Company, Lehigh Valley Railroad Company, Booth, James Curtis, 1810-1888
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  2 items
  Business correspondence

  Wastage in Refinery, 1882-3

  • 1883-Jun-29

  Report on the loss of silver and gold from refinery wastage by month.

  • Author Booth, James Curtis, 1810-1888
  • Subject Gold, Smelting, Silver, Metals--Refining, Mint of the United States, Metallurgy, Silver--Refining, Gold--Refining, Booth, James Curtis, 1810-1888, Precious metals, United States Mint
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  2 items
  Personal correspondence, Business correspondence

  Content in Coin Silver of Crucible…

  • 1883-Jan-08

  Notes on silver content from the United States Mint.

  • Author Booth, James Curtis, 1810-1888
  • Subject Smelting, Silver, Metals--Refining, Mint of the United States, Metallurgy, Silver--Refining, Booth, James Curtis, 1810-1888, Precious metals, United States Mint
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  2 items
  Business correspondence

  Approximate value of Coinage of U.S. in Gold and Silver from the beginning in 1792 to 30th June, 1882

  • 1882-Aug-24

  Calculations written on U.S. Mint letterhead, approximating the value of gold and silver coinage of the United States.

  • Author Booth, James Curtis, 1810-1888
  • Subject Gold, Smelting, Coinage, Silver, Metals--Refining, Mint of the United States, Metallurgy, Silver--Refining, Gold--Refining, Booth, James Curtis, 1810-1888, Precious metals, United States Mint
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  Business correspondence

  Letter from James C. Booth to an unidentified "sir"

  • 1879-May-29

  James Curtis Booth's (1810-1888) comments on experiments made by A.E. Outerbridge on volatilization of silver of standard fineness.

  • Author Booth, James Curtis, 1810-1888
  • Subject Smelting, Silver, Metals--Refining, Mint of the United States, Metallurgy, Silver--Refining, Booth, James Curtis, 1810-1888, Precious metals, United States Mint