General Information

Serial #

1872-109 (Inv.)

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

WOOD/ BRASS

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

24.2 cm

Width

24.2 cm

Height

63.5 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Mathematics

Category

Models

Sub-Category

N/A

Manufacturer

AKA

DeLagrange

Country

France

State/Province

Unknown

City

Paris

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

In 1872 the South Kensington Museum in London UK commissioned Fabre de Lagrange of Paris to make 45 mathematical models for their Education Collection. The Canada Science and Technology Museums Corporation obtaind 28 of them from the Science Museum in 1973 through a deaccession. They still have seventeen models from the original commission.

Function

USED AS VISUAL AID FOR TEACHING DESCRIPTIVE GEOMETRY OF ENGINEERING.

Technical

When the strings are properly threaded on the model, the object appears as a cylinder. When the model is then turned either clockwise or counterclockwise, the strings lean left or right the string becomes a hyperboloid of one sheet while the lane becomes a warped plane or hyperbolic paraboloid. (William Stone, Olivier Models, 6)

Area Notes

Unknown

Details

Markings

S/N '1872-109'

Missing

N/A

Finish

WOOD BOX BASE 11-1/2" SQ. X 9"/ COVER HAS A 7" DIA. HOLE/ MOUNTED ON COVER ARE 2 UPRIGHT BRASS STRIPS, EACH HOLDING, JUST ABOVE THE CENTER, AND ON TOP, A RIM OF BRASS/ INSIDE THE RIM OF BRASS IS SWIVELLED A SMALLER, HOLE-DRILLED RIM/ THERE ARE THREADS BETWEEN THE TWO INNER RIMS WITH LEAD WEIGHTS AT THE END OF THE THREADS, UNDER THE BOTTOM RIM/ GOOD, THREADS ARE CUT UP

Decoration

N/A