General Information

Serial #

798984

Part Number

1

Total Parts

2

AKA

N/A

Patents

N/A

General Description

.1 METAL, CERAMIC, CARBON IN PLACE/.2 GLASS

Dimensions

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

Length

77.0 cm

Width

21.5 cm

Height

21.5 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Lighting Technology

Category

Lighting devices

Sub-Category

N/A

Manufacturer

AKA

General Electric

Country

Canada

State/Province

Ontario

City

Peterborough

Context

Country

Worldwide

State/Province

Unknown

Period

COMMERCIAL ARC LIGHTING FIRST USED 1870S/ DECLINED AFTER C.1910/ SELDOM USED FOR SPACE LIGHTING BY 1940S

Canada

Unknown

Function

TO PROVIDE LIGHT/ USED FOR OUTDOOR LIGHTING OR TO LIGHT LARGE INTERIOR SPACES

Technical

ENCLOSED ARC LAMPS HAD ADVANTAGES OVER OPEN TYPES/ CARBONS LASTED MUCH LONGER (APPROX. 150 HRS INSTEAD OF 10), LAMP GAVE STEADIER LIGHT & FIRE HAZARD WAS LESS/ THE 1ST PATENT FOR AN ENCLOSED ARC LAMP WAS ISSUED IN 1891, THEY BEGAN TO BE COMMERCIALLY PRODUCED C.1893/ BY 1899 85% OF ARC LAMPS MADE IN U.S. WERE ENCLOSED TYPE

Area Notes

Unknown

Details

Markings

.1 PLATE 'FORM 7 ENCLOSED ARC LAMP FOR A.C. MULTIPLE CIRCUITS/ NO. 798984 CAT. NO. 9090 AMP. 6/ PAT. APR.7,'91 NOV.8,'92 SEP.12,'93 JUN.5,'94 JUN.26,'94/ DEC.24,'95 MAY 10,'98 OCT.16,1900 JAN.29,1901/ SEP.30, 1902 AUG.2, 1904 SEP.13, 1904'/ PLATE ON CASE 'THOMSON ENCLOSED ARC LAMP/ DIRECT CURRENT/ CANADIAN/ GENERAL ELECTRIC CO. LIMITED/ PETERBOROUGH, CANADA'

Missing

OUTER GLOBE

Finish

.1TOP & SOME PTS PAINTED BLACK, SOME PTS ARE RUSTY, SOME BRASS-COLOUR PTS, CASE IS DULL BRASS COLOUR/.2 TRANSPARENT, COLOURLESS

Decoration

.1 CASE HAS SEVERAL NARROW, SLIGHTLY RAISED BANDS RUNNING AROUND IT/ RING WHICH HOLDS INNER GLOBE HAS RIDGE RUNNING AROUND CENTRE, SERIES OF INDENTATIONS IN RIDGE