In the eighteenth century the flint was switched to lead oxide, but the name continued to be flint glass.
Teroma glass – Art glass where frosted crystal glass with a chipped ice finish used to make vases and lampshades.
Flint glass – A clear, heavy glass which produces a bell-tone when tapped gently.
Chipped ice – This was a rough finish on many early glass electric lamps which had a painting on the exterior with landscapes, florals, or birds.
Linenfold – A decorative glass shade which, was preferred by Louis Tiffany.
Bridge lamp – These are floor lamps, which have a single metal arm extending from the top of the lamp standard and ending in an electric socket.
Cold painted – Painting on the unheated surface of a metal lamp for decorative purposes. The thin panels were often bent while hot, and fitted into intricate metal framework.
This is a very brief starter list of terms antique lamp collectors should be aware of to aid them in their search for pre and early electric lamps. The opposite of this is obverse-painted which has the painting on the exterior of the shade.
Boudoir lamp – This is a catch-all term for small decorative lamps which were meant to sit on the dressing tables of a woman’s boudoir. In antique lamps these are usually from the early electric period. These were sometimes inset into a lampshade for decorative purposes.
Puffy – Ornate brown shades produced by the Pairpoint Corporation for early electric lamps. It consisted of an almost clear glass panel impressed with a design of fine ribbing.
Patinated – An artificial surface finish on metalware such as copper or bronze.
Tutleback tile – Tiffany studios created these glass tiles, which resemble turtle by being slightly oval with a domed top.
Ormolu – A bronze or brass in eighteenth and nineteenth century France used for furniture and lamp bases.
Slag glass – A glass formed by combining a white glass with a swirled in contrasting color. For example, what is a chipped ice finish? What exactly is ormula? The following is a brief list of antique lamp ventilating rectangular duct terms you are likely to come across while purchasing period related lighting pieces. The finish was popular in the nineteenth and twentieth century. These lamps were popular in the 1920’s and 30’s and were covered in glass or with a cloth paper shade. This gave the lampshade the appearance of delicate folded linens. This process creates a fine greenish crust reproducing the look of bronze archeological relics.
Harp – In the early electric lamps this was a arched metal loop at the top that held the shade above the base. These lampshades were brightly colored with flowers of various kinds on the design.
Reverse-painted – Description of early electric lamps which had decorative scenes painted on the inside of the lampshade.Collecting antique lamps can be very rewarding but with so many lamps on the market the terms describing them can get very confusing. This was made with blown and pressed glass with flint in the mix in seventeenth century England. The exterior is hand-painted on the glass and this was popular in the twentieth century.