General Information

Serial #

229795

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

CAST IRON BASE, FIELD RING & BEARING BLOCKS. LAMINATED STEEL POLE PIECES. STEEL SHAFT SUPPORTS A LAMINATED STEEL ARMATURE, COPPER COMMUTATOR WITH MICA INSULATION. FIELD COILS AND ARMATURE ARE WOUND WITH INSULATED COPPER WIRE. STEEL BRUSH HOLDERS ARE MOUNTED ON STEEL SHAFTS, ATTACHED TO A CAST IRON SPIDER. BRUSHES ARE CARBON WITH BRASS SPRINGS. BRONZE BEARINGS. CAST IRON PULLEY.

Dimensions

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

Length

79.0 cm

Width

57.0 cm

Height

64.0 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

General Electric

Country

United States of America

State/Province

New York

City

Schenectady

Context

Country

United States of America

State/Province

Unknown

Period

THIS TYPE OF GENERATOR USED C. 1905- 1925.

Canada

PART OF A LARGE & 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 ENERGY INTO DIRECT CURRENT ELECTRICAL ENERGY.

Technical

INTERESTING MACHINE IN TERMS OF DESIGN: IT HAS ONLY ONE REMOVABLE BEARING BLOCK.ARMATURE INSTALLATION IS ACCOMPLISHED BY SLIDING THE ARMATURE INTO THE BRUSH END BEARING BLOCK, THEN INSTALLING THE PULLEY END BEARING BLOCK.

Area Notes

Unknown

Details

Markings

Mfr's plate on top of field ring reads: " DIRRECT CURRENT GENERATOR/ NO 229795/ TYPE ML FRAME E FORM 1 IS 0035-2/ AMP 48 KW 6 VOLTS NO LOAD 125/ SPEED 1275 [ GE logo ] VOLTS FULL LOAD 125/ PATENTED NOV 18, 1902/ GENERAL ELECTRIC CO./ SCHENECTADY N.Y. U.S.A./ NP 9275 ". " D-4 " handpainted in yellow on field ring, to right of plate. All 4 field coils bear identical stamped, numbered plates marked " 350035-2 ". [NB: These plates appear to have originally been secured beneath wrapping.]

Missing

UNKNOWN.

Finish

FINISH IS POOR, WITH MUCH RUST. ORIGINAL FINISH ON CASTING IS GREY PAINT, WITH A LATER COAT OF BLACK. ARMATURE FINISH PROBABLY RED LEAD.

Decoration

N/A