Renseignements généraux

Nº de série

S/O

Nº de partie

1

Nombre total de parties

1

Ou

S/O

Brevets

S/O

Description générale

synthetic shell, base & switch handle/ metal parts

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

S/O

Largeur

S/O

Hauteur

4,7 cm

Épaisseur

S/O

Poids

S/O

Diamètre

5,5 cm

Volume

S/O

Lexique

Groupe

Énergie-électrique

Catégorie

Site d'utilisateur

Sous-catégorie

S/O

Fabricant

Ou

Amalgamated

Pays

Canada

État/province

Inconnu

Ville

Inconnu

Contexte

Pays

Canada

État/province

Inconnu

Période

mid 20th century

Canada

A Canadian made switch of a type used in Canadian households. Part of a large & varied collection of over 7500 electrical items acquired & documented by Ontario Hydro in the 1960s. The collection was thought to be the largest & most comprehensive of its kind in Canada & was donated to the National Museum of Science & Technology in 1992.

Fonction

An electrical wiring device used to make or break a connection in an electrical circuit, specifically in domestic lighting.

Technique

Originating in England, the tumbler switch, with definite off & onpositions, came into regular use about 1891 & rapidly superceded all other movements, replacing the established turn & turn button arrangement. The Kelvin switch of 1881 showed a radical departure from the influence of the gas tap (Ref. 2). Beginning around 1905, the design of tumbler switches became simpler & thinner. In Canada, the flush type soon became the favourite over the surface type. The latter was probably still available for older houses in which flush type switches could not be used. Still, until the late 1920s, the turn type switch (snap) & push button switch were the type most often seen in catalogues. Bakelite switches also appeared in the late 1920s (Ref.1).

Notes sur la région

Inconnu

Détails

Marques

raised lettering on shell & base reads "AMALGAMATED/ ELECTRIC"

Manque

appears complete

Fini

dark brown shell, base, switch handle

Décoration

S/O