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unknown metal receiver
unknown metal receiver

unknown metal receiver

Datecirca 1875
Inventory Number8009b
ClassificationTelephone
Subject
    User Jefferson Physical Laboratory, Harvard University founded 1884
    Maker American ?
    Cultural Region
      Dimensions18.8 × 7.4 × 7.4 cm (7 3/8 × 2 15/16 × 2 15/16 in.)
      Material
        DescriptionA handheld telephone receiver, of a style known as a "butterstamp" type, made of black hard rubber and metal. The handle has a rounded ball-shaped, hard-rubber end affixed to a metal cylinder which connects to the earpiece. The earpiece consists of three short, stacked metal cylinders, the topmost one being the receiver. The top cylinder is of dark metal, with a knurled edge. The ear cup is slightly concave, with a round opening in the center. The inner opening is covered by a metal disk.


        Signedunsigned
        Curatorial Remarks8009a and 8009b are very similar items. Old tag "Reciever 8009b"
        FunctionConversion of electric signals into sound for output by telephone
        ProvenanceJefferson Laboratory, Physics Department, Harvard University
        unknown metal receiver
        unknown metal receiver
        Jefferson Physical Laboratory, Harvard University
        Date: circa 1875
        Object number: 8009a
        Dunand's telephone receiver
        Dunand's telephone receiver
        A. Dunand
        Date: circa 1878
        Object number: 8008
        uninscribed Bell-type receiver
        uninscribed Bell-type receiver
        Jefferson Physical Laboratory, Harvard University
        Date: circa 1879
        Object number: 8013b
        uninscribed Bell-type receiver
        uninscribed Bell-type receiver
        Jefferson Physical Laboratory, Harvard University
        Date: circa 1879
        Object number: 8013a
        Bell speaking telephone receiver/ transmitter
        Bell speaking telephone receiver/ transmitter
        Jefferson Physical Laboratory, Harvard University
        Date: circa 1877
        Object number: 8006
        Bell speaking telephone receiver/ transmitter
        Bell speaking telephone receiver/ transmitter
        Jefferson Physical Laboratory, Harvard University
        Date: circa 1877
        Object number: 8007
        Ericsson receiver
        Ericsson receiver
        L. M. Ericsson
        Date: circa 1879
        Object number: 8014d
        Ericsson receiver
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        L. M. Ericsson
        Date: circa 1879
        Accessories: Ivory signaling rattle
        Object number: 8014c
        Ader finger-ring receiver
        Ader finger-ring receiver
        Clement Ader
        Date: 1881
        Object number: 8079
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        Ader "bull ring" receiver
        Louis-Clément Breguet
        Date: circa 1881
        Object number: 8022b
        Ericsson receiver
        Ericsson receiver
        L. M. Ericsson
        Date: circa 1879
        Object number: 8014a
        Ericsson receiver
        Ericsson receiver
        L. M. Ericsson
        Date: circa 1879
        Object number: 8014b