General Information

Serial #

1872-125 (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

34.9 cm

Width

3.8 cm

Height

N/A

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 is no. 35 in the original SK catalogue from 1872, an "Intersection of two cylinders, one piercing the other so as to give two separate loops of intersection." The start of the catalogue states: "The set of Models described in this Catalogue is deposited in the Educational Collection at the South Kensington Museum." One of the cylinders pierces the other so that there are two separate loops intersecting. William Cady Stone has pointed out in his book on the Olivier models that placed grommets on the intersection of two strings to emphasize the curve of the lines. As the lines are curved, the grommets slide with the string to show the change in the curve. (Stone, 4)

Area Notes

Unknown

Details

Markings

S/N '1872-125' PAINTED ON

Missing

none

Finish

A 13-3/4" SQUARE X 1-1/2" BASE OF WOOD/ TOP CENTRE, PIVOTED BY THEIR CENTRE ARE TWO BRASS ASSEMBLIES, ONE ABOVE THE OTHER, FREE TO ROTATE/ EACH ASSEMBLY IS 13-1/2" LONG/ UPRIGHT AT EACH ASSEMBLY'S ENDS ARE BRASS RINGS WITH A CROSSPIECE ON A WIDE BASE/ BRASS ARMS CONNECT EACH END OF BASE/ THREADS RUN BETWEEN THE SET OF BASES & THE SET OF RINGS/ DIA.: LOWER RINGS- 6-1/2"; UPPER RINGS- 9'/ GOOD, FEW STRINGS MISSING

Decoration

N/A