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plug board
plug board

plug board

Datecirca 1947
Inventory Number2003-1-0276
ClassificationPlug Board
Subject
    Maker Harvard Cyclotron Laboratory 1937 - 2002
    Place of Origin
      Dimensions39 x 15.2 x 4.9 cm (15 3/8 x 6 x 1 15/16 in.)
      Material
        DescriptionThis brown masonite board has 10 plug sockets on the left side. They are red. The paper label on the lower right reads:

        DO NOT
        Work on Cyclotron
        Wiring Unless You
        Turn Off Breakers,
        And Take One Of
        These Plugs With You

        NEVER
        Turn on Cyclotron
        Breakers Unless All
        Plugs Are In This
        Board.
        In Collection(s)
        Signedunsigned
        Inscribedon paper label: DO NOT /Work on Cyclotron / Wiring Unless You /Turn Off Breakers, / And Take One Of / These Plugs With You / NEVER / Turn on Cyclotron / Breakers Unless All / Plugs Are In This / Board
        FunctionThe plug board was used to disconnect the cyclotron accelerator in preparation for safe entry into the vaul area.
        Historical AttributesThis may be the original plug board of the Harvard Cyclotron Laboratory from 1947. It is pre-1955.
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