Renseignements généraux

Nº de série

S/O

Nº de partie

1

Nombre total de parties

1

Ou

S/O

Brevets

S/O

Description générale

Metal body and glass panel below handle.

Dimensions

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

Longueur

42,9 cm

Largeur

27,1 cm

Hauteur

13,0 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Lutte contre les incendies

Catégorie

Alarmes

Sous-catégorie

S/O

Fabricant

Ou

Northern Electric

Pays

United States of America

État/province

Inconnu

Ville

Inconnu

Contexte

Pays

Inconnu

État/province

Inconnu

Période

Inconnu

Canada

Type of device made and used in Canada to alert fire fighters in a fire department, of the presence of a fire in the neighbourhood where the alarm box is situated.

Fonction

To rapidly transmit an alarm of fire to a fire fighting force.

Technique

The first practical fire alarm system was developed in Boston in1852, by Dr. William Channing and Moses Farmer. It worked on the principal of telegraphy: a signal was sent long distances over wires, by electric transmission. "In the first boxes, a notched code wheel was turned by a crank handle in the front of the box. Then, it evolved with a spring-driven, clockwork-type mechanism which drove the code wheel when activated by a lever." Boxes were put on a pedestal or telephone pole at a street corner. Early boxes were locked with keys which were given to the citizens and policemen who had the responsibility of pulling the lever in the event of a fire. In 1875 a model was made that did not need a key. In 1922, the quick-action door was put on the market. There are two main components that make up this kind of fire alarm system: the telegraph mechanism, located on a street corner, and the alarm apparatus (gongs and indicators), located inside a fire department's Headquarters. One-way communication between the telegraph and alarm system was made possible by linking both boxes with aerial and/or ground-level wires. Central station equipment would receive the signal, revealing the location of the fire, and would proceed to notify the firehouse nearest to the fire by transmitting another signal to their alarm box.

Notes sur la région

Inconnu

Détails

Marques

Mfr. logo (raised): "[image of clenched fist and lightning bolts]" - Instructions on handle (in raised lettering): "TO OPEN/ PAT. APPL'D FOR/ PULL HANDLE" - Instructions below lever (in raised lettering): "FOR FIRE/ PULL LEVER" - Mfr. insignia (raised): "Northern Electric - Gamewell" - Markings on reverse of exterior box door: "MADE IN USA" - Markings on interior box door: "PULL/ LEVER/ DOWN ONCE/ LET GO"

Manque

Key to open interior box door.

Fini

Painted red.

Décoration

Raised relief and lettering on front door and upper pediment.