Motor

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OBJECT TYPE
AC/INDUCTION/2 PHASE/20 HP
DATE
1894
ARTIFACT NUMBER
1992.1802.001
MANUFACTURER
Westinghouse Electric & Mfg. Co.
MODEL
B
LOCATION
Pittsburgh, Pennsylvania, United States of America

More Information


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

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

Westinghouse Electric & Mfg. Co., Motor, circa 1894, Artifact no. 1992.1802, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1992.1802.001/

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