carbon arc projector
Inventory Number1996-1-0552
ClassificationProjection Equipment
Subject
Dimensions34.8 × 18.7 × 42.6 cm (13 11/16 × 7 3/8 × 16 3/4 in.)
DescriptionA pair of carbon rod electrodes are connected to a current limited source of power - 115 V AC or DC in series with a 1500 W space heater, for example. They are mounted on a well insulated, fire proof structure which allows the distance between the rods to be controlled.
produces light by an electric arc
produces light by an electric arc
Signedunsigned
Historical AttributesSheet reads: "Oct.55. For stability use about 5 amp. 60 ohm plugged in at rear of wall. O. O [?] If the + carbon is not properly shifted forward. , the rubber ribbon transporting the holder must be made tighter." Also, ther is a diagram showing the machine's interior circuitry.
Bausch & Lomb Optical Company
Date: 1950-1960
Object number: 1997-1-0797
Harvard Cyclotron Laboratory
Date: 1947-2002
Object number: 2003-1-0291
Date: late 19th-early 20th Century
Object number: RS0294
Bausch & Lomb Optical Company
Date: 1950-1960
Object number: 2007-1-0065
Bausch & Lomb Optical Company
Object number: RS0741
American
Date: late 19th Century
Object number: 2007-1-0493
Bausch & Lomb Optical Company
Date: circa 1948
Object number: 2002-1-0034b
