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toothy electrical crown
toothy electrical crown

toothy electrical crown

Date19th Century
Inventory Number2007-1-0271
ClassificationElectrical Apparatus
Subject
    Maker French ?
    Maker American ?
    Maker English ?
    Cultural Region
      Dimensions3.3 × 10 × 10.7 cm (1 5/16 × 3 15/16 × 4 3/16 in.)
      Material
        DescriptionA gilt copper disk of 9.5 cm in diameter is slightly domed. There are two bent wire connectors attached to the top. (One wire is missing.) The disk serves as a cover for a toothed ring with vertical triangular points. The ring is made of black-painted copper. Many points are bent. The toothy ring was formerly attached to the cover. Four connecting points on the interior of the ring are visible, but the soldered connecting wires are now missing.
        Signedunsigned
        Curatorial RemarksThis item was found with the mica disk, 2007-1-0272.
        Barlow's wheel
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        Breton Frères
        Date: circa 1850
        Object number: DW0391
        core memory module, planar
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        American
        Date: circa 1970
        Accessories: with watchglass
        Object number: 1998-1-0577
        core memory module, planar
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        Digital Equipment Corporation
        Date: circa 1975
        Object number: 1998-1-0578
        core memory module, planar
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        Radio Corporation of America
        Date: 1971
        Object number: 1997-1-1249
        2 electrical contact plates with leads
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        W. & S. Jones
        Date: 1816
        Object number: 1998-1-0764
        box of assorted electric light bulbs
        box of assorted electric light bulbs
        Sylvania
        Date: late 19th-early 20th Century
        Object number: RS0368
        electrical comb collector
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        French
        Date: 19th Century
        Object number: 2007-1-0265
        altazimuth theodolite
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        Andrew Yeates
        Date: circa 1840
        Accessories: case, second eyepiece, plumb bob
        Object number: 5235
        Green wooden storage box containing Western Electric condensers and resistors
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        Western Electric Company
        Date: 1900-1930
        Object number: RS0196
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        mariner's dry card compass with azimuth fixture
        Samuel Thaxter & Son
        Date: 1825-1843
        Object number: DW0519
        Green wooden storage box containing vacuum tube sockets
        Green wooden storage box containing vacuum tube sockets
        Date: 1910-1930
        Object number: RS0195
        electrical wires, patch cables, and connectors in storage box
        electrical wires, patch cables, and connectors in storage box
        Date: 1900-1930
        Object number: RS0510