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Date 1945 to 1949 Remove constraint Date: <span class='from'>1945</span> to <span class='to'>1949</span>

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    • 1949-Mar-17

    The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this…

    • 1949

    View of a female model lifting a log of Dow Chemical Company Styrofoam over her head to demonstrate the product's buoyant and lightweight properties. Several stacks of Styrofoam logs are visible in the background.

    • 1949

    View of two female models standing on a plank of Dow Chemical Company Styrofoam to demonstrate the product's sturdiness and durability. Several boxes of Styrofoam products are visible in the background.

    Invented in…

    • 1946
    • 1940s
    • 1949

    The bordered photograph featuring Coca-Cola bottles and ice buckets is dated 1949. The bordered photographs of children are dated 1946. The exact date of the photographs without white borders is unknown.

    • 1949-Sep-22

    Concerns submission of a manuscript to Mulliken for review, and results of Shull's latest work on quantum theory.

    • 1949-Oct-18

    Contains suggestions from Mulliken to Shull for changes in one of Shull's manuscripts.

    • 1940s – circa

    Portrait of James A. Rafferty (1886-1951). Rafferty was born in Chicago, Illinois on May 4th, 1886 and studied engineering and chemistry at the Lewis Institute of Technology. Following his graduation from Lewis in 1908,…

    • circa 1949

    General view of the Rubber Compounding and Processing Laboratory at the Naval Air Experimental Station's Aeronautical Materials Laboratory. Two workers and an assortment of machinery and scientific apparatus, including…

    • circa 1949

    View of chemist adding unidentified ingredients to rubber stock in the Rubber Compounding and Processing Laboratory at the Naval Air Experimental Station. The primary purpose of the laboratory was the production of…

    • circa 1949

    General view of the Rubber Compounding and Processing Laboratory at the Naval Air Experimental Station's Aeronautical Materials Laboratory. Two workers and an assortment of machinery and scientific apparatus, including…

    • circa 1949

    View of the mixing mill used in the Rubber Compounding and Processing Laboratory at the Naval Air Experimental Station. The mill is an Adamson 6" by 16" two-roll machine powered by a 7 1/2 H.P. motor with chain drive.…

    • circa 1949

    View of a worker passing rubber stock through the mixing mill at the Naval Air Experimental Station's Rubber Compounding and Processing Laboratory. At the laboratory, the mill was used to mix rubber stocks or warm mixed…

    • 1949-Jan-05

    Concerns Robert B. Woodward's synthesis of methochloride of sempervirine. Also discusses an error made by Julian in the lab and communicated to Witkop in an earlier letter.

    • circa 1949

    View of a worker cutting rubber stock from the mixing mill at the Naval Air Experimental Station's Rubber Compounding and Processing Laboratory. At the laboratory, the mill was used to mix rubber stocks or warm mixed…

    • circa 1949

    View of a worker inserting rubber stock into the Banbury Mixer at the Naval Air Experimental Station's Rubber Compounding and Processing Laboratory. At the laboratory, the mixer was used to break down and mix rubber…

    • circa 1949

    View of the Banbury Mixer used in the Rubber Compounding and Processing Laboratory at the Naval Air Experimental Station. The mixer is a Farrel-Birmingham Co. size B Banbury Mixer with a 25 H.P. motor and four-speed…

    • circa 1949

    View of a worker dumping mixed rubber stock from the Banbury Mixer at the Naval Air Experimental Station's Rubber Compounding and Processing Laboratory. At the laboratory, the mixer was used to break down and mix rubber…

    • circa 1949

    View of two engineers, Stanley Bilker (background) and Ralph Harper (foreground), operating the calender sheeting machine at the the Naval Air Experimental Station's Rubber Compounding and Processing Laboratory. The…

    • circa 1949

    View of a worker holding a piece of rubber tubing as it is extruded from the tuber machine in the Naval Air Experimental Station's Rubber Compounding and Processing Laboratory. This tuber, a variable speed H.P. Royle…

    • circa 1949

    General view of the Steam Vulcanizer in the Rubber Compounding and Processing Laboratory at the Naval Air Experimental Station. Also known as an autoclave, the vulcanizer was use to cure, i.e. toughen or harden polymer…

    • circa 1949

    General view of the hydraulic press in the Rubber Compounding and Processing Laboratory at the Naval Air Experimental Station. This unit is a 200-ton capacity Williams-White Moline machine equipped with three 24" x 24"…

    • circa 1949

    View of a worker closing the hydraulic press in the Rubber Compounding and Processing Laboratory at the Naval Air Experimental Station. This unit is a 200-ton capacity Williams-White Moline machine equipped with three…

    • circa 1949

    Set of rubber compounding and vulcanization tools and knives used in the Rubber Compounding and Processing Laboratory at the Naval Air Experimental Station. This photograph was included in a 1949 Naval Air Experimental…

    • circa 1949

    General view of the Mooney Viscometer in the Rubber Compounding and Processing Laboratory at the Naval Air Experimental Station. At the laboratory, the viscometer was used to determine the plasticity and scorch rate of…

    • circa 1949

    View of a worker removing a tensile sheet from a mold used in the hydraulic press at the Naval Air Experimental Station's Rubber Compounding and Processing Laboratory. The hydraulic press is a 200-ton capacity…