General Information

Serial #

36174

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

CAST IRON BASE, UPPER & LOWER FIELD FRAME & BEARING BLOCK ASSEMBLIES. BABBITT BEARINGS OILED FROM SUMP IN BEARING BLOCKS. INSULATED COPPER WIRE ARMATURE WINDINGS. INSULATED COPPER BAR FIELD STRUCTURE WITH LAMINATED STEEL CORE. COPPER SLIP RINGS WITH LAMINATED COPPER BRUSHES & BRASS BRUSH MOUNTING ASSEMBLY. HOLLOW STEEL SHAFT; STEEL PULLEY & MISC. HARDWARE

Dimensions

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

Length

113.0 cm

Width

72.0 cm

Height

80.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Energy-electric

Category

Conversion

Sub-Category

N/A

Manufacturer

AKA

Westinghouse

Country

United States of America

State/Province

Pennsylvania

City

Pittsburgh

Context

Country

North America

State/Province

Unknown

Period

THIS TYPE OF MOTOR USED C.1894-1924

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 ELECTRICAL ENERGY INTO ROTARY MECHANICAL ENERGY

Technical

VERY EARLY WESTINGHOUSE DESIGN FROM WHICH INDUCTION MOTOR PRINCIPLES WERE DEVELOPED, AND LATER, MORE ADVANCED DESIGNS FOLLOWED. TYPE B MOTORS FEATURED AN IMPROVED SECONDARY WINDING (FIELD ASSEMBLY), WHICH COMBINED RESISTANCE STARTING WITH THE EFFECTS OF A CAGE WINDING AT FULL SPEED. A CLOSED-COIL, SERIES TYPE WINDING OF LOW VOLTAGE, WAS USED IN THE SECONDARY, WITH NUMEROUS IRON GRIDS CONNECTED BETWEEN ADJACENT COILS. AS FULL SPEED WAS ATTAINED, A SHORT CIRCUITING RING, SURROUNDING THE SECONDARY WINDING WAS SHIFTED CIRCUMFERENTIALLY TO BRING IT INTO CONTACT WITH THE SECONDARY BAR END CONNECTORS AT A LARGE NUMBER OF POINTS. THIS MOTOR WAS VERY SUCCESSFUL, BUT IT WAS EXPENSIVE TO BUILD AND THE DESIGN PRESENTED SOME LIMITATIONS, RE: VOLTAGE (REF.1)

Area Notes

Unknown

Details

Markings

MFR'S PLATE ON MOTOR CASING READS: 'WESTINGHOUSE ELEC. & MFG. CO./ PITTSBURGH, PA./ PATENTED/ MAY 1 1888/ MAY 29 1888/ JAN.27 1891/ MAR. 22 1892/ DEC. 13 1892/ OTHER PATENTS APPLIED FOR/ 2 PHASE _ AMPS 200 VOLTS/ NO. 36174 1200 REV.'; IDENTICAL PLATE MOUNTED ON OPPOSITE SIDE OF CASING/ PLATE ON CASING TOP READS: 'STARTING/ RUNNING'/ '20HP 200V 33979' STAMPED INTO SHAFT END AT DRIVE BELT HOUSING/ DECAL APPLIED TO MOTOR HOUSING READS: 'THE HYDRO/ HISTORICAL/ ELECTRICAL/ COLLECTION'

Missing

NONE

Finish

GLOSS BLACK ENAMEL FRAME AND FIELD BARS. BLACK START/RUN SWITCH HANDLE. ARMATURE END PLATES, GOLD PAINT. ALL OTHER MATERIAL NATURAL

Decoration

N/A