General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

CAST IRON BASE, ARMATURE SUPPORT ASSEMBLIES, FIELD CORES & POLE PIECES. LAMINATED STEEL ARMATURE CORE. COPPER COMMUTATOR INSULATED WITH MICA; STEEL SHAFT; BRONZE BEARINGS. INSULATED COPPER FIELD & ARMATURE WINDINGS. DISTRIBUTION & SWITCH BLOCK OF WOOD. COPPER SWITCH & CONNECTORS. BRONZE BRUSH HOLDERS. CARBON BRUSHES, BRUSH SPIDER IS CAST IRON, WITH BRONZE BRUSH HOLDER MOUNTING HARDWARE. BRONZE & GLASS OILERS

Dimensions

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

Length

65.0 cm

Width

42.0 cm

Height

53.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Energy-electric

Category

Generation

Sub-Category

N/A

Manufacturer

AKA

Thomson Houston

Country

United States of America

State/Province

Massachusetts

City

Lynn

Context

Country

United States of America

State/Province

Unknown

Period

THIS TYPE OF GENERATOR USED C.1900-1920.

Canada

PART OF A LARGE AND VARIED COLLECTION OF ELECTRICAL ITEMS ACQUIRED & DOCUMENTED BY ONTARIO HYDRO IN 1960S. THIS COLLECTION CONSISTS OF OVER 7500 ARTIFACTS, AND IS THOUGHT TO BE THE LARGEST & MOST COMPREHENSIVE IN CANADA. IT WAS DONATED IN ITS ENTIRETY TO THE NATIONAL MUSEUM OF SCIENCE & TECHNOLOGY IN 1992.

Function

TO CONVERT ROTARY MECHANICAL ENERGY INTO DIRECT CURRENT ELECTRICAL ENERGY.

Technical

NOTE ON OH TAG ORIGINALLY FIXED TO GENERATOR INDICATES THIS UNIT WAS A DYNAMO EXCITER. IF SO, IT SUPPLIED FIELD CURRENT FOR A MUCH LARGER GENERATOR. HOWEVER, IT COULD BE USED AS A 1 KW GENERATOR FOR ANY DIRECT CURRENTREQUIREMENT.

Area Notes

Unknown

Details

Markings

FOLLOWING INFO. STAMPED INTO WOODEN PLATE OVER MAGNETS: 'MANUFACTURED/ BY/ T.H. ELEC. CO./ LYNN, MASS. U.S.A.'. DYMO-TAPE LABELS APPLIED TO PLATE READ 'SHUNT' & 'MC.2.5.'. 'D 1-1/2' CAST IN RAISED PRINT ON BASE & ENDPIECES. PLATE APPLIED TO BASE READS 'DONATED/ BY/ THE KERITE CO.'. DECAL APPLIED TO CASING READS: 'THE HYDRO/ HISTORICAL/ ELECTRICAL/ COLLECTION'

Missing

NONE EVIDENT

Finish

BLACK ENAMEL BASE, ARMATURE SUPPORTS, POLE PIECES & BRUSH SPIDER. FIELD COILS & ARMATURE WINDINGS DARK RED OVER FIBRE COVER. WOODEN SPIDER HANDLE VARNISHED

Decoration

N/A