General Information

Serial #

N/A

Part Number

1

Total Parts

3

AKA

N/A

Patents

N/A

General Description

WOODEN CASE & STAND/ BRASS BOTTLE, WHEELS,CHAIN, SUPPORTS & CONNECTING PIPES WITH TAPS; METAL WEIGHTS WITH COPPER SUPPORTS W/ BRASS TOPS/ METAL BELL/ GLASS TUBE/ SYNTHETIC MAT IN FRONT

Dimensions

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

Length

102.0 cm

Width

73.0 cm

Height

217.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Physics

Category

Hydrostatics & fluid mechanics

Sub-Category

N/A

Manufacturer

AKA

Wright

Country

England

State/Province

Unknown

City

London

Context

Country

Canada

State/Province

Ontario

Period

THIS ONE USED FROM THE EARLY 1900S UP TO THE 1960S

Canada

TYPE SAMPLE OF AN EARLY TESTING DEVICE USED BY THE STANDARDS BRANCH

Function

USED TO TEST, OR PROVE, THE ACCURACY OF THE REGISTRATION OF A GAS METER BY PASSING THROUGH IT A VOLUME OF AIR FROM THE PROVER AND COMPARING THE REGISTRATION OF THE METER WITH THE VOLUME WHICH IS REGISTERED BY THE PROVER.

Technical

THE NAME 'PROVER' GOES BACK TO THE 1920S AND POSSIBLY EARLIER. THE ORIGINAL WAY OF STATING THE ERROR OF THE METER WAS TO EXPRESS IT AS PERCENT PROOF THUS GIVING RISE TO THE TERM 'PROVING THE METER' AND THE VARIOUS DEVICES USED BECAME KNOWN AS BELL PROVERS, BOTTLE TYPE PROVERS, FLOW PROVERS ETC. [REF 3]

Area Notes

Unknown

Details

Markings

PLATE ON FRONT OF CASE: 'ALEX R WRIGHT & Co/ Engineers/ 55 & 55A MILLBANK ST./ LONDON. S.W.'/ DYNOTAPE ON FRONT: 'L 101'/ LABEL AFFIXED TO FRONT: 'DO NOT REMOVE/ Holding Unit/ 205C/ E.D.R./ 64119'/ [ALSOIN FRENCH]'

Missing

WOULD REQUIRE A SCALE GRADUATED IN CUBIC FT & DECIMAL FRACTIONS FASTENED TO THE PROVER BELL WITH THE POINTER ATTACHED TO THE TOP OF THE PROVER TANK. ALSO WOULD REQUIRE TO BE USED WITH A MANOMETER [REF 4] From CA of 04/21/1999 by Kevin Machan: Undetermined - May be missing tubing that would have been connected to valves at top of unit.

Finish

WOOD STAINED AND VARNISHED; BRASS LACQUERED; INSIDE OF BELL PAINTED MATTE ORANGE, OUTSIDE PAINTED BLACK WITH GOLD STRIPE; WEIGHTS PAINTED GLOSS BLACK

Decoration

PLATE ON FRONT OF CASE: 'ALEXR WRIGHT & CO/ ENGINEERS/ 55 & 55A MILLBANK ST./ LONDON. S.W.'/ DYNOTAPE ON FRONT: 'L101'/ LABEL AFFIXED TO FRONT: 'DON NOT REMOVE/ HOLDING UNIT/ 205C/ E.D.R./ 64119/ [ALSO IN FRENCH]'