General Information

Serial #

N/A

Part Number

1

Total Parts

3

AKA

N/A

Patents

N/A

General Description

.1 BRASS, COPPER ( AND POSSIBLY OTHER ?) METAL FITTINGS & KEY; COMPOSITION CONTACT STRIP HOUSING & POINT ON KEY; MICA INSULATING COLLAR/.2 BRASS/.3 BRASS & COMPOSITION MATERIALS

Dimensions

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

Length

8.0 cm

Width

6.5 cm

Height

6.6 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Energy-electric

Category

User site

Sub-Category

N/A

Manufacturer

AKA

Bergmann

Country

United States of America

State/Province

New York

City

New York

Context

Country

Canada

State/Province

Unknown

Period

THIS TYPE OF SOCKET USED IN LATE 1880S+

Canada

PART OF A LARGE & VARIED COLLECTION OF ELECTRICAL ITEMS ACQUIRED & DOCUMENTED BY ONTARIO HYDRO IN THE 1960S. THIS COLLECTION CONSISTS OF OVER 7500 ARTIFACTS, AND ISTHOUGHT 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 SUPPORT & CONNECT A LAMP BULB OR OTHER DEVICE WITHIN A FIXTURE.

Technical

EXAMPLE OF EARLY SCREW-TYPE SOCKET FITTED WITH KEY SWITCH AND CLAMP FOR SECURING LAMP SHADE TO FIXTURE. MICA COLLAR FITTED TO SOCKET WHERE THREADED SOCKET IS FIXED TO CONTACT SEAT (.1)

Area Notes

Unknown

Details

Markings

.1 no markings..2 " PATENTED/ DEC. 27, 1881/ MAY. 2, 1882/ JAN. 10, 1883/ FEB. 12, 1884/ MAY 13, 1884/ JAN. 20, 1885/ SEP. 11, 1888/ MANUFACTURED BY/ BERGMANN & CO. N.Y. " incised on casing..3 " PAT./ FEB. 12TH 1884 " incised in rim.

Missing

APPEARS COMPLETE. .3 SHADE HOLDER IS BADLY BENT.

Finish

ALL COMPONENTS APPEARS TO HAVE LACQUERED BRASS EXTERIOR FINISH, NOW BADLY WORN.

Decoration

N/A