General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

WOOD BASE AND HANDLE KNOB; CAST IRON MAGNET CORE AND ARMATURE BEARING SUPPORTS; SYNTHETIC TERMINALS; COILS ARE DOUBLE COTTON COVERED COPPER WIRE; BRUSHES, BRUSH HOLDERS, BINDING POSTS, AND BOLTS ARE NICKLE PLATED; BRASS ARMATURE SLIP RINGS

Dimensions

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

Length

33.0 cm

Width

23.0 cm

Height

22.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Physics

Category

Demonstration & teaching equipment

Sub-Category

N/A

Manufacturer

AKA

CENCO

Country

United States of America

State/Province

Illinois

City

Chicago

Context

Country

North America

State/Province

Unknown

Period

1930S TO LATE 1960S

Canada

AN EXAMPLE OF A TEACHING DEVICE USED BY CANADIAN TEACHERS STARTING IN THE 1920S TO DEMONSTRATE PRINCIPLES OF ELECTRICITY. IT SHOWS THAT THERE WAS A DEVELOPMENT IN THE SCHOOL CURRICULA TO INCLUDETHE STUDY OF ELECTRICITY AT CANADIAN TECHNICAL SCHOOLS AND UNIVERSITIES AT THAT TIME [REF 1]

Function

USED TO STUDY AC AND DC CURRENT AND TO DEMONSTRATE THE PRINCIPLES AND CONSTRUCTION OF SERIES, SHUNT AND COMPOUND WOUND MOTORS & DYNAMOS; SELF & EXTERNAL EXCITATION; ALTERNATORS; COMMUTATOR ACTION; EFFECT OF SPEED ETC.

Technical

A SMALL SCALE, EASILY USED DEVICE TO DEMONSTRATE THE PRINCIPLES OF BOTH AC AND DC CURRENT.

Area Notes

Unknown

Details

Markings

MFG'S PLATE ON BASE: 'CENTRAL SCIENTIFIC CO./ LABORATORY SUPPLIES/ APPARATUS CHEMICALS/ TRADE MARK/ CENCO/ REG.U.S. PAT. OFF./ CHICAGO, U.S.A./ NEW YORK - BOSTON - TORONTO - LOS ANGELES'/ HANDWRITTEN ON COILS IN RED INK: 'P.61-2'

Missing

N/A

Finish

BASE STAINED & VARNISHED; FIELD MAGNET CORE & ARMATURE BEARING SUPPORTS PAINTED WITH A BLACK CRACKLE ENAMELLED FINISH; HANDLE AND KNOB PAINTED BLACK GLOSS ENAMEL; COTTON AROUND WIRES GREENISH-YELLOW

Decoration

N/A