Art Deco Machine Age Aluminum and Ribbed Glass Desk Lamp
Decorative Object / Lighting · Likely a manufacturer of industrial or office lighting such as Eagle Electric or Markel Electric Products; however, the base appears to be a common utilitarian design from the mid-20th century.
Pattern: Machine Age Streamline Moderne Desk Lamp with Step-ribbed Glass
Type
Decorative Object / Lighting
Maker
Likely a manufacturer of industrial or office lighting such as Eagle Electric or Markel Electric Products; however, the base appears to be a common utilitarian design from the mid-20th century.
Material
The base and shade support are made of cast and spun aluminum with a matte 'satin' silver finish. The shade is molded clear and frosted glass. It contains no actual silver metal.
Dimensions
Standard desk lamp size: approximately 8-10 inches wide and 7-9 inches tall. Weighted base for stability, estimated at 2-3 pounds.
Description
An iconic example of Streamline Moderne utility, this desk lamp combines geometric glass-work with industrial aluminum. The half-moon shade features 'stepped' optics designed to diffuse light evenly across a workstation, while the satin silver finish of the metal components provides a futuristic, 'Machine Age' appearance.
Key Features
The 'step-up' geometric pattern on the glass face and the use of satin aluminum instead of chrome or brass.
Material & Composition
The base and shade support are made of cast and spun aluminum with a matte 'satin' silver finish. The shade is molded clear and frosted glass. It contains no actual silver metal.
Finish & Decoration
Satin aluminum finish on the base; the glass shade features a distinctive Art Deco geometric 'step' or 'ziggurat' pattern and horizontal ribbing. The decoration is purely functional and stylistic of the Streamline Moderne period.
Hallmarks & Stamps
No silver hallmarks are present. Expected markings would be UL listings or manufacturer stamps on the bottom of the weighted base or near the switch socket, typically indicating electrical ratings.
Construction Details
Spun aluminum conical base, cast aluminum armature, and molded glass shade. Includes a pull-chain socket mechanism and a modern rectangular electrical toggle cutout.
Functional Features
Rotating semi-circular glass shade to direct light, ball-chain pull switch for operation, and a wide-profile weighted base to prevent tipping.
Handle & Grip Details
Features a standard ball-chain pull grip in dark bronze or aged plastic; the shade adjustment screw is a knurled metal thumb-nut.
Craftsmanship Details
Factory-manufactured via die-casting and machining; the glass is mold-blown or pressed. High-quality industrial execution typical of mid-century American manufacturing.
Authentication Indicators
The absence of silver hallmarks confirms this is an industrial aluminum alloy piece. The construction of the electrical housing (toggle switch and pull chain) is consistent with mid-century mass production.
Origin & Manufacturing
Likely United States or Canada, produced in a factory specializing in industrial lighting and domestic electrical appliances.
Era & Period
Art Deco / Machine Age (Design reflects 1930s-1940s aesthetic, though this specific model may be a later mid-century utility adaptation).
Age Estimate
Circa 1940-1955 based on the switch housing and the use of satin-finished aluminum.
Cultural Significance
Represents the transition from ornate Victorian lighting to the functional, aerodynamic designs of the 20th century, where materials like aluminum became symbols of progress.
Condition Notes
Good condition. The aluminum shows light surface oxidation and minor scratching. The glass shade appears intact without major chips. The pull chain is present but shows surface patina. Grade: Very Good.
Value Estimate
$75 - $150 USD depending on the manufacturer’s label and the functionality of the wiring.
Care & Maintenance
Do not use silver polish. Clean aluminum with a damp cloth and mild soap. Glass can be cleaned with standard glass cleaner when detached. Ensure electrical wiring is inspected by a professional.
Similar Pieces
Chase Brass & Copper Co. 'Gaiety' lamps (often chrome), Markel Electric 'Streamline' lamps, and Emeralite (green glass) banker's lamps.
Interesting Facts
Lamps of this style were often called 'banker's lamps' or 'librarian's lamps' because the ribbed glass was designed to reduce eye strain during long hours of reading.