Renseignements généraux

Nº de série

S/O

Nº de partie

1

Nombre total de parties

1

Ou

S/O

Brevets

S/O

Description générale

brass shell/ copper/ porcelain

Dimensions

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

Longueur

4,5 cm

Largeur

4,0 cm

Hauteur

S/O

Épaisseur

7,1 cm

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Énergie-électrique

Catégorie

Site d'utilisateur

Sous-catégorie

S/O

Fabricant

Ou

HUBBELL

Pays

United States of America

État/province

Inconnu

Ville

Inconnu

Contexte

Pays

Amérique du Nord

État/province

Inconnu

Période

early 20th century +

Canada

Inconnu

Fonction

An electrical wiring device used to support & connect to electricity a lamp or other electrical device

Technique

An example of a chain-pull switch socket. Edison had the idea for a light socket while screwing the cap on a kerosene can. It has the advantage of firmly seating the bulb without having to snap, pull or otherwise jar the lamp and its delicate filament. There were rival lamps before 1900, each with its own base, but Edison's base had 70% of the market (Ref. 3). Mellanby writes that switched lampholders were used since domestic electrical lighting was introduced in the 1880s. Much of the demand for sockets with switches came from the days of gas lighting, and it took people some time to get used to the greater convenience of a switch near the door of a room. Portable lamps began to be introduced so the demand for switch holders continued in spite of frequent efforts by engineers and insurance interests to discourage it (Ref. 2)

Notes sur la région

Inconnu

Détails

Marques

incised lettering reads 'HARVEY HUBBELL INC./ PAT'D/ AUG. 11. 96/ MAY. 8. 00 FEB. 18. 02/ JAN. 14. 08 OCT. 13. 08/ 250 V 50 C.P.'

Manque

unknown

Fini

gold coloured metal

Décoration

S/O