General Information

Serial #

N/A

Part Number

1

Total Parts

2

AKA

N/A

Patents

N/A

General Description

UNITARY ZINC ALLOY DIE-CAST/ OTHER METALS/ SYNTHETIC DISTRIBUTOR

Dimensions

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

Length

24.2 cm

Width

10.5 cm

Height

17.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Motorized Ground Transportation

Category

Automotive engineering

Sub-Category

N/A

Manufacturer

AKA

Bosch

Country

United States of America

State/Province

Massachusetts

City

Springfield

Context

Country

Canada

State/Province

Ontario

Period

C. 1948

Canada

FROM COLLECTION OF AUTOMOBILE PTS & SERVICING EQ ACQUIRED BY MR. T.H. OLIVER, FATHER OF DONOR, DURING CAREER IN AUTOMOTIVE SERVICING AFTER WORKING AT WILLYS-OVERLAND & FAIRBANKS-MORSE IN TORONTO, & IN AUTO GARAGE IN AURORA, IN 1931 HE BEGAN HIS OWN BUSINESS, ONE PART OF WHICH INVOLVED AUTOMOTIVE ELECTRICAL SERVICING.

Function

PART OF IGNITION SYSTEM OF INTERNAL COMBUSTION ENGINE. IT USES MAGNETIC FIELD TO PRODUCE ELECTRIC SPARK WHICH EXPLODES GASOLINE VAPOUR IN CYLINDER OF ENGINE, ENABLING IT TO FUNCTION.

Technical

SOPHISTICATED POST WWII DESIGN WITH HIGH IMPACT ZINC ALLOY DIE-CAST BODY. CRACKING OF CAP WAS DUE TO POOR IMPACT STRENGTH OF DIELECTRIC MATERIALS WHICH, THOUGH IMPROVED SIGNIFICANTLY BY LATE 1940S, STILL REMAINED ISSUE DESPITE DEVELOPMENT OF NEW SYNTHETIC RESIN MATERIALS USED BY AMERICAN BOSCH (REF. 1).

Area Notes

Unknown

Details

Markings

RAISED METALLIC LETTERING ON PLATE READS "UNITED AMERICAN BOSCH CORP'N/ SPRINGFIELD, MASS., U.S.A./ MJA4B-112/ PATENTED"/.2 CW TAG READING "ELLIS & HOWARD LIMITED" ON ONE SIDE WITH HANDWRITTEN "Fred Gibson/ Trade-in/ on Bosch/ MJB4A-104" ON REVERSE

Missing

APPEARS COMPLETE/ .1 CORNER PIECE MISSING FROM MFG. PLATE

Finish

.1 ORIGINALLY PAINTED DARK GREEN WITH BLACK & METALLIC PARTS/.2 ORIGINALLY PAINTED BLACK WITH METALLIC PARTS/.1-.2 BROWN SYNTHETIC, BRASS COLOURED PARTS

Decoration

INSET RED & SILVER PLATE WITH LOGO & READING "AMERICAN/ BOSCH" ON EACH SIDE OF CASING