Ammeter-voltmeter

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OBJECT TYPE
Thomson
DATE
Unknown
ARTIFACT NUMBER
2018.0158.001
MANUFACTURER
General Electric Co.
MODEL
Ammeter no. 500568 Type O/Voltmeter no. 526912 Type O
LOCATION
United States of America

More Information


General Information

Serial #
N/A
Part Number
1
Total Parts
1
AKA
N/A
Patents
N/A
General Description
Wood, metal, paper and glass

Dimensions

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

Length
20.5 cm
Width
31.0 cm
Height
21.0 cm
Thickness
N/A
Weight
N/A
Diameter
N/A
Volume
N/A

Lexicon

Group
Energy-electric
Category
N/A
Sub-Category
N/A

Manufacturer

AKA
General Electric
Country
United States of America
State/Province
Unknown
City
Unknown

Context

Country
Unknown
State/Province
Unknown
Period
Unknown
Canada
Taken from acquisition proposal "Ce coffret de test électrique appartenait au premier électricien de la région de Waterloo, également électricien à la distillerie Seagram, Henry (Harry) Oestreich. Ses coordonnées sont gravées sous le couvercle soit 50 rue William, Waterloo, Ontario. M. Oestreich est allé étudier l’électricité à la New York Electrical School. Ses études furent payées par la firme Seagram. Henry Oestreich est né en Allemagne en 1865 et ses parents émigrèrent au Canada en 1868. Selon le recensement de 1881, il était alors travailleur agricole. En 1911, il est inscrit comme électricien. Ce coffret lui était très cher. Vers l’âge de 12 ans, en 1942, M. Peper a connu Henry Oestreich alors qu’il y avait un problème électrique à la maison de ses parents. Il développa alors son intérêt pour l’électricité. Ils ont entretenu une relation père-fils jusqu’au décès de M. Oestreich en 1943. C’est ainsi que M. Peper a obtenu le coffret. Il lui fut remis après le décès de M. Oestreich par un ami de ce dernier avec une note de Henry qui se retrouvait auparavant face à la place de travail de Heinz dans l’atelier de Henry sur laquelle était inscrit: ``Never Give UP`` Le coffret contient deux compteurs fabriqués par General Electric- un ampèremètre (ammeter) de type Thomson, modèle O et un voltmètre de type Thomson, aussi de modèle O. Les instructions d’opération sont écrites à la main sur du papier et collées sous le couvercle."
Function
Case is comprised of two gauges: ammeter is used to measure the electric current in amperes and the voltmeter measures voltage (electrical potential).
Technical
Taken from acquisition proposal "Thomson signifie qu’il s’agit de la technologie développée par Elihu Thomson."
Area Notes
Unknown

Details

Markings
First gauge reads "THOMSON AMMETER/ NO. 500568 TYPE O/ GENERAL ELECTRIC CO., U.S.A./ PAT. JULY 18, '95 APR 2, 1901 JUNE 1 1909". Second gauge reads "THOMSON VOLTMETER/ NO. 526912 TYPE O/ GENERAL ELECTRIC CO., U.S.A./ PAT. JULY 16,'95 APR.2, 1901 JUNE 1, 1909". Plate, interior lid reads "ONTARIO CASE/ AND STORE FIXTURE CO./ TORONTO,". Incised print into wood, below plate reads "H. OESTREICH/ 20 WILLIAM ST/ WATERLOO". First label reads, interior lid reads "AMMETER/ TO MEASURE AMPERES FLOWING IN A / CIRCUIT CONNECT AMMETER TERMINALS/ DIRECTLY IN SERIES WITH CIRCUIT./ FULL SCALE OF AMMETER IS 5 AMPERES./ IF CURRENT, TO BE MEASURED, EXCEEDS/ THIS AMOUNT, A CURRENT TRANSFORMER/ OF SUITABLE RATIO MUST BE USED." Small print, bottom right corner reads "MAR. 5[/]19/ HCK[?]". Second label reads "VOLTMETER/ TO MEASURE VOLTAGES FROM 1 TO 150 VOLTS/ CONNECT LEFT HAND VOLTMETER TERMINAL AND/ TERMINAL MARKED 150 ACROSS THE LINE./ TO MEASURE VOLTAGES FROM 150 TO 300 VOLTS/ CONNECT LEFT HAND VOLTMETER TERMINAL AND/ TERMINAL MARKED 300 ACROSS THE LINE./ TO MEASURE VOLTAGES FROM 300 TO 750/ VOLTS CONNECT LEFT HAND, VOLTMETER TERMINAL/ AND TERMINAL MARKED 750 ACROSS THE LINE.". Small print, bottom right corner reads "MAR. 5[/]19/ HCK[?]".
Missing
Missing a piece of wood on the left side of lid and another on the bottom right side.
Finish
Case: heavily varnished oak; hinged lid; metal hardware. Interior lid has two labels and one plaque. Both gauges are metal with glass lens.
Decoration
N/A

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If you choose to share our information about this collection object, please cite:

General Electric Co., Ammeter-voltmeter, Unknown Date, Artifact no. 2018.0158, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/2018.0158.001/

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