General Information

Serial #

68419

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

CAST IRON FRAME & ADJUSTABLE MOUNTING RAILS. INSULATED COPPER WIRE FIELD WINDINGS OVER CAST IRON CORES. INSULATED COPPER ARMATURE WINDINGS. LAMINATED STEEL ARMATURE CORE. COPPER COMMUTATOR WITH MICA INSULATION. STEEL ARMATURE SHAFT MOUNTED IN BRONZE BEARINGS. CAST STEEL PULLEY. STEEL HARDWARE. CARBON BRUSHES.

Dimensions

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

Length

74.0 cm

Width

70.0 cm

Height

55.0 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

Allis Chalmers

Country

United States of America

State/Province

Wisconsin

City

Milwaukee

Context

Country

North America

State/Province

Unknown

Period

THIS TYPE OF MOTOR USED C.1905-1920

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 500V DIRECT CURRENT ENERGY INTO ROTARY MECHANICAL POWER

Technical

EXAMPLE OF EARLY ALLIS-CHALMERS DC MOTOR. ALLIS CHALMERS ENTERED INTO INDUSTRIAL ELECTRICAL EQ. MFG. MARKET C.1904, AFTER G.E. & WESTINGHOUSE BEGAN PRODUCING STEAMTURBINES & GENERATORS. BY THE RAPID PURCHASE OF EXISTING PATENTS & AN ALLIANCE WITH BULLOCK ELECTRIC MFG. CO., ALLIS-CHALMERS WAS ABLE TO COMPETE ALMOST IMMEDIATELY. (REF. 1, VOL. XLIII, NO.11, P.510)

Area Notes

Unknown

Details

Markings

MFR'S PLATE SCREWED TO CASING TOP READS: 'NO. 68419/ H.P. 3 VOLTS 500/ AMPERES _/ R.P.M. 1175/ ALLIS-CHALMERS CO./ MILWAUKEE, WIS. U.S.A.'

Missing

NONE

Finish

BLACK PAINTED FRAME. FIELD COILS TAPE WRAPPED & PAINTED BLACK. ARMATURE IS STRING WRAPPED & PROBABLY VARNISHED, WITH BLACK FINISH.

Decoration

N/A