General Information

Serial #

8275

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

CAST-IRON, STEEL, COPPER, BRASS AND POSSIBLY OTHER METAL MATERIALS OF CONSTRUCTION. SYNTHETIC KNOB ON START SWITCH; OTHER FITTINGS MAY BE OF SYNTHETIC COMPOSITION. FABRIC COVERING ON ELECTRICAL CONNECTIONS. CARBON (?) BRUSHES.

Dimensions

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

Length

21.0 cm

Width

19.0 cm

Height

23.0 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

Crocker Wheeler

Country

United States of America

State/Province

New Jersey

City

Ampere

Context

Country

North America

State/Province

Unknown

Period

THIS TYPE OF MOTOR PRESUMABLY USED LATE19TH-EARLY 20TH C.

Canada

THIS TYPE OF MOTOR USED IN CANADIAN CITIES AT THE TURN OF THE 20TH C. FOR ALL KINDS OF WORK REQUIRING STEADY SPEED. THE SOLE AGENT IN CANADA, UNTIL AT LEAST 1906, WAS PACKARD ELECTRIC CO. LTD. (REF. 1)

Function

TO CONVERT ELECTRICAL INTO MECHANICAL ENERGY.

Technical

THIS MOTOR IS A PERFECTED VERSION OF THE EARLIER CROCKER-WHEELER MOTOR. IT RAN WITHOUT SPARKING, WAS NOISELESS, AND WAS EQUIPPED WITH A CONTROLLING SWITCH. THE WIRE USED ON THE ARMATURE WAS LARGER, MAKING IT LIABLE TO BREAK. IT WAS EQUIPPED WITH AUTOMATIC CENTRIFUGAL SPEED GOVERNORS, SUITABLE FOR ALL KINDS OF WORK REQUIRING STEADY SPEED. THE CROCKER-WHEELER MOTOR WAS ALSO AN IMPROVEMENT OVER OTHER MOTORS BECAUSE THE CORE AND THE POLE PIECES WERE DROP-FORGED IN ONE PIECE AND EXACTLY TO SHAPE, TO PREVENT TOO MUCH MAGNETIC LEAKAGE. THE ARMATURE WAS MADE WITH TRAPEZOIDAL TEETH, MAKING THE MOTOR MORE EFFICIENT. THE BEARINGS WERE MADE OF THE BEST BABITT METAL, THE SAME AS IN THE LARGE STEAM ENGINES AND OTHER FIRST-CLASS MACHINERY. (REF. 1)

Area Notes

Unknown

Details

Markings

Mfr's plate on motor top reads "CROCKER-WHEELER/ COMPANY/ AMPERE, N.J., U.S.A./ 1/12 HP. SIZE 1/12 T PAT'D/ MAY 5, 1891./ AND OTHERS./ NO. 8275 SPEED 1800 AMP..75 VOLTS 115". "CROCKER/ WHEELER" cast in raised print on both supporting frames over armature. "CROCKER-WHEELER" cast in decorative script on plate fixed to lower front of motor. "CROCKER - WHEELER" cast in raised printon control switch. "293" painted by hand in off-white on one side of motor housing, near armature. Black dymo tape label on base reads "MF.2.4".

Missing

UNKNOWN.

Finish

DARK GREY ENAMEL FINISH ON MAIN SUPPORTING STRUCTURE OF MOTOR. MOST METAL WORKING COMPONENTS HAVE NATURAL FINISH. POLE & ARMATURE WINDINGS ARE COATED (LACQUERED?).

Decoration

N/A