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electrical heating element
electrical heating element

electrical heating element

Datecirca 1920
Inventory Number2008-1-0028
ClassificationLaboratory Equipment
Subject
    Cultural Region
      Place of Origin
        Dimensions14.5 x 16.5 x 19.5 cm (5 11/16 x 6 1/2 x 7 11/16 in.)
        Material
          DescriptionA black metal stand with three legs and two platforms. On the upper platform it holds a rusted metal cylinder, and on the platform below is a knob with settings "OFF", "LOW", "MED", "HIGH". It has an electrical cord insulated with fabric.
          Signedon plaque, base: EDWIN L. WIEGAND CO.
          FunctionAn early version of an electrical stove.

          From the Chromalox company website: "In 1915 Edwin L. Wiegand, a young, brilliant, self-taught engineer was granted his first patent for inventing a resistance heating element embedded in an insulating refractory enclosed in a metal sheath".
          electric motor
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          Central Scientific Company
          Date: circa 1940
          Accessories: a wooden case with a metal handle on top
          Object number: 1998-1-0612
          du Noüy surface tension apparatus
          Central Scientific Company
          Date: circa 1929
          Accessories: wooden case with a metal handle on top, now detached
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          Date: circa 1920
          Accessories: 5 accessory parts: 2 magnetic rods with spherical ends; one brass notch; needle with tip inserted into cork;
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          Accessories: data cable
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          Rudolph Rothe
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          Accessories: lenses and reflectors
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