Renseignements généraux

Nº de série

S/O

Nº de partie

1

Nombre total de parties

1

Ou

S/O

Brevets

S/O

Description générale

ferrous metal/ rubber? buffer

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

10,5 cm

Épaisseur

S/O

Poids

S/O

Diamètre

14,0 cm

Volume

S/O

Lexique

Groupe

Météorologie

Catégorie

Mesure de vitesse et direction du vent de surface

Sous-catégorie

S/O

Fabricant

Ou

Environment CA

Pays

Inconnu

État/province

Inconnu

Ville

Inconnu

Contexte

Pays

Canada

État/province

Inconnu

Période

circa 1952 +; this instrument was apparently in use for 20 years (Ref. 4)

Canada

An example of a piece of ancillary equipment used in the measurement of wind by the Meteorological Service of Canada aboard ships. Part of a large collection of meteorological instruments acquired from the Meteorological Service of Canada (previously Atmospheric Environment Service) by the CSTM since 1967. MSC is the government agency responsible for collecting and disseminating meteorological data and forecasts in Canada. It was founded in 1871 in Toronto where it is still headquartered. The MSC was originally on the University of Toronto downtown campus but moved to Downsview in 1971 on land owned by UofT. The headquarters houses laboratories, research facilities and calibration and instrument maintenance facilities (now largely contracted out).

Fonction

A mount for an anemometer used on a ship, intended to reduce vibration which damages the instrument.

Technique

A MSC antivibration base for shipboard U2A anemometers (see 1978.1096-1978.1097). Aboard ships there is a great deal of vibration which loosens connections and breaks welded joints. This base was used to reduce the vibrations to the welded U-arm which held the wind sensors. The U2A anemometer was in use from 1952. (Ref. 1) The mount consists of two pieces of metal sandwiching thick disk of rubber-like material. Rubber buffered bolts attach the device to the ship and the anemometer shaft is screwed into the threaded receptacle on the top surface. The U2A consists of a generator attached to the MSC cupwheel to measure wind speed and a synchro attached to an aerodynamic vane for wind direction. The generator is a linear direct current generator with a 4.00 volt output which is equivalent to 100 miles per hour on the dial display or recorder. The synchro is a type of motor in which the shaft position of one motor is duplicated by another when the two are connected in parallel by a five wire cable. The wind vane is connected to one synchro and the indicator on the dial display to the secondary synchro. The display for the U2A consists of two almost identical meters (see 1987.0782-1987.0783): a 270 degree voltmeter for speed and a 360 degree synchro for direction. Speed is read to the nearest knot and direction to the nearest ten degrees (Ref. 1)

Notes sur la région

Inconnu

Détails

Marques

incised logo appears to read 'PF'

Manque

appears complete

Fini

grey painted metal/ orange padding

Décoration

S/O