resistance box 1111 ohms
Datecirca 1880
Inventory NumberDW0064
ClassificationResistance Box
Subject
Maker
L. G. Tillotson & Company
?
fl. 1865 - 1885
Cultural Region
Place of Origin
Place of Use
Dimensions15.5 × 17.5 × 11 cm (6 1/8 × 6 7/8 × 4 5/16 in.)
Material
Accessoriesplugs (8)
DescriptionRectangular plug resistance box consisting of two rows of five brass blocks, bridged at one end, and underneath which is a coil connecting each block to the next. Between each pair of blocks is a removeable brass plug. There are also two metal binding posts at each end. The resistances are marked 1, 10, 100, and 1000 ohms.
These elements are mounted on a thick hard rubber panel over a rectangular wooden base.
These elements are mounted on a thick hard rubber panel over a rectangular wooden base.
Signedon instrument: LG
Inscribedmarked on bottom: 100, 102
Curatorial RemarksThe "LG" symbol may refer to L.G. TIllotson, famous telegraphic equipment maker of the late 19th century.
FunctionSuch an instrument is used to control the resistance of electric conductors. For a short general description and other images, go to the following website.
The series of brass blocks are connected to one another with the coils underneath. When the plugs are all in, the resistance is negligible. When one or more plugs are removed, the resistance of that or these plugs are introduced into the electric current passing through the box.
The series of brass blocks are connected to one another with the coils underneath. When the plugs are all in, the resistance is negligible. When one or more plugs are removed, the resistance of that or these plugs are introduced into the electric current passing through the box.
ProvenanceDavid Wheatland purchased from Roux-Devillas Paris, May 14, 1966 (lot 5/52).
Hartmann & Braun AG
Date: 1900-1920
Accessories: plugs (8)
Object number: 1997-1-0399
Leeds & Northrup Company
Date: 1910-1930
Accessories: plugs (8)
Object number: 1997-1-0184
Leeds & Northrup Company
Date: 1910-1930
Accessories: plugs (12)
Object number: 1997-1-0185
Leeds & Northrup Company
Date: 1910-1930
Accessories: plugs (12)
Object number: 1997-1-0186
Leeds & Northrup Company
Date: 1910-1930
Accessories: plugs (5)
Object number: 2003-1-0035
Hartmann & Braun AG
Date: circa 1920
Accessories: 6 plugs
Object number: 1997-1-0400
Leeds & Northrup Company
Date: circa 1938
Accessories: plugs (6)
Object number: 1997-1-0196