General Information

Serial #

1872-115 (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

53.3 cm

Width

33.1 cm

Height

41.3 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

This model exhibits the transformation of a conoid into a cylinder, a cylinder into a conoid, the paraboloid touching the conoid into the tangent plane of a cylinder, and the tangent plane of a cylinder into the tangent paraboloid of a conoid. These changes are all effected simultaneously by one movement which can be reversed. (Museum supplemental information)

Area Notes

Unknown

Details

Markings

S/N '1872-115'

Missing

GOOD, SOME THREADS MISSING, BOTTOM OF BOX IS BROKEN

Finish

RECTANGULAR WOOD BOX BASE 20-3/4" X 12-3/4" X 10" HIGH/ ON THE COVER AT ONE END THERE IS A 12" BRASS, SLOTTED PLATE WITH A HANDLE ON ITS OUTSIDE EDGE FOR ROTATING DISC/ THERE ARE 2 UPRIGHT PLATES, ONE ON EDGE AGOVE THE PLATE ON COVER, THE OTHER IS ADJUSTABLE ON THE BRASS BAR ABOVE THE COVER. THE PLATES ARE COMPLEX HALF RINGS 10" DIA/ THREADS BETWEEN THE PLATES DESCEND INTO BOX THROUGH THE COVER PLATE/ THREADS ARE LEAD-WEIGHTED

Decoration

N/A