General Information

Serial #

25156

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

CAST IRON BASE, BEARING BLOCKS AND FIELD CASING. LAMINATED STEEL ROTOR ASSEMBLY WITH STEEL SHAFT AND BRONZE BEARINGS. COPPER COMMUTATOR BARS WITH INSULATING SEPARATOR STRIPS. HEAVY INSULATED COPPER COMMUTATOR AND FIELDCONDUCTORS.

Dimensions

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

Length

138.0 cm

Width

90.0 cm

Height

105.0 cm

Thickness

N/A

Weight

1188.4

Diameter

N/A

Volume

N/A

Lexicon

Group

Energy-electric

Category

Generation

Sub-Category

N/A

Manufacturer

AKA

MCEWEN

Country

United States of America

State/Province

Pennsylvania

City

Ridgway

Context

Country

United States of America

State/Province

Vermont

Period

THIS TYPE OF GENERATOR USED C.1896-1920

Canada

PART OF A LARGE AND VARIED COLLECTION OF ELECTRICAL ITEMS ACQUIRED & DOCUMENTED BY ONTARIO HYDRO IN THE 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 POWER TO DIRECT CURRENT ELECTRICAL POWER

Technical

EXAMPLE OF EARLY ELECTRIC POWER GENERATING MACHINE. It was driven by a Corliss steam engine. It was built in the late 1890's and at the time, was far ahead of all others according to Ontario Hydro information. It had 10 poles instead of 6 and a compensating winding in the polar faces and the brush holders.

Area Notes

Unknown

Details

Markings

MFR'S PLATE ON GENERATOR CASING READS: 'THOMPSON-RYAN DYNAMO/ TYPE B 10 25 700/ NO 25156/ CAPACITY 200 AMPERES 125 VOLTS/ MANUFACTURED BY/ J.H. MCEWEN, MAN'F'G. CO./ RIDGWAY PA U.S.A.'

Missing

NONE

Finish

BASE, SHAFT SUPPORT CASINGS & CENTRAL CORE CASING HAS RED-BROWN ENAMEL PAINTED FINISH

Decoration

NONE