friction discs
Datecirca 1925
Inventory NumberDW0541b
ClassificationFriction Machine
Subject
Attributed to
J. H. Steward Ltd
fl. 1852 - 1930
Inventor
Richard M. Deeley
1855 - 1944
Cultural Region
Place of Origin
Dimensionsdiscs: 0.2 × 8.4 × 8.4 cm (1/16 × 3 5/16 × 3 5/16 in.)
box: 11 x 25 x 10 cm (4 5/16 x 9 13/16 x 3 15/16 in.)
box: 11 x 25 x 10 cm (4 5/16 x 9 13/16 x 3 15/16 in.)
Material
Accessoriesbox
DescriptionThe box contains 11 friction discs that were used with Steward's lubricant and friction testing machine (DW0541a).
Signedunsigned
Inscribedon the top brass plate, cover: DEELEY FRICTION MACHINE
Curatorial RemarksThe U.S. patent for the machine with which these discs were used is 1,517,410 and it was granted in December of 1924. See it online <a href="http://www.google.com/patents?id=rNdAAAAAEBAJ&dq=r.m.+deeley" target="_blank">here</a>.
FunctionThese discs were used with the machine was that tested the quality of a lubricant (thus to avoid friction) or determined the amount of friction between to metallic discs rotating against each other.
ProvenanceDavid Wheatland purchased from Saul Moskowitz (Historical Technology, Inc.), Marblehead, Massachusetts, March 16, 1981 (catalog 121, #183).
J. H. Steward Ltd
Date: circa 1925
Accessories: wooden case; friction discs (4); pulleys (2); small metallic case; key; tube
Object number: DW0541a
J. H. Steward Ltd
Date: 1900-1930
Accessories: objective; ocular
Object number: 1230
W. & S. Jones
Date: circa 1804
Object number: 0077d
J. H. Steward Ltd
Date: circa 1800
Accessories: globe (telescope not yet located), parts in drawer
Object number: DWN0004
English
Date: circa 1820
Accessories: wooden case
brass frame with points
glass arm
handle
broken glass (in package)
Object number: DW0504
Daniel Branton
Date: 1979
Object number: 1999-1-0041l
See also/See also
