General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

ferrous metal/ rubber? buffer

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

N/A

Width

N/A

Height

10.5 cm

Thickness

N/A

Weight

N/A

Diameter

14.0 cm

Volume

N/A

Lexicon

Group

Meteorology

Category

Surface wind speed & direction measurement

Sub-Category

N/A

Manufacturer

AKA

Environment CA

Country

Unknown

State/Province

Unknown

City

Unknown

Context

Country

Canada

State/Province

Unknown

Period

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).

Function

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

Technical

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)

Area Notes

Unknown

Details

Markings

incised logo appears to read 'PF'

Missing

appears complete

Finish

grey painted metal/ orange padding

Decoration

N/A