loading
reading
writing
saving
searching
Antique Early 1900s Inverted Wall Sconce Gas Powered Light Fixture Gla - $100 (Post Falls)
condition:
excellent
QR Code Link to This Post
The glass globe has a sun purple tint in the glass that due to a photochemical reaction called solarization, where ultraviolet (UV) light from the sun alters the chemical structure of manganese dioxide added to the glass. Originally, manganese was used as a decolorizer to counteract iron impurities, but years of sun exposure turn these colorless manganese ions into a purple, oxidized state.
Based on the visual characteristics, this is an antique gas lamp fixture, specifically identifying as a Colt Acetylene Gas Lamp. Key Features and Identification Fixture Type:
This is a wall-mounted gas light from the late 19th or early 20th century.Manufacturer: The specific design with the circular metal frame holding the glass globe and the attached gas valve is characteristic of J.B. Colt acetylene lamps.Components:Glass Globe: A large, clear spherical globe that originally housed the gas flame.Acetylene Valve: The metal assembly includes a specialized gas valve and thumb screws used to secure the globe.Wall Mount: The threaded pipe assembly extending from the side was designed to connect to a gas line in a wall. These fixtures were commonly used before electric lighting became widespread and often utilized acetylene gas produced by a carbide generator. Today, they are sought after as vintage decorative pieces or for restoration into electric sconces.