Glass companies around Pennsylvania

Duncan & Miller Glass Company

A well-known glass manufacturing company in Washington, Pennsylvania. Items that were produced by the company are known as "Duncan glass" or "Duncan Miller glass." The company was founded in 1865 by George Duncan with his two sons and son-in-law in the South Side neighborhood of Pittsburgh, Pennsylvania. By 1890, the company joined other glass companies to form the United States Glass Company, a powerful glass trust. In 1892, the factory was destroyed in a fire, and the company was relieved of its trust relationship with the US Glass Company. After the fire, the second generation of the Duncan family moved operations to Washington, Pennsylvania. In 1900, John Ernest Miller, the company's long-time designer, became a full shareholder along with members of the Duncan family. By 1955, economic pressures from machine-produced glass forced the company to sell off its assets to the US Glass Company, who continued to produce Duncan-style glass until 1980.

Jeannette Glass Company

Jeannette Bottle Works began operation in the late 1880s in Jeannette, Pennsylvania. In 1898 the company became Jeannette Glass Company. Like so many other glassware entities, this one concentrated on utility glass early on and produced a vast selection of handmade bottles, jars, and dishware well into the early 1900s.
The company expanded production to prism glass in 1917. Prism glass was incorporated in both business and residential structures to increase light exposure.
This division of the company was sold in the mid-1920s. Improvements made to the factory during this period, however, included converting it to a pressed glass facility. This change allowed the company to later produce the Depression-era kitchen glass and dinnerware for which they are best known.
Depression Glass Days Jeannette Glass Company, one of the seven major companies producing Depression glass, introduced 14 collectible patterns during the period from 1928 through 1938, according to an article by Joyce E. Krupey published online by the National Depression Glass Association. Among these are the ever-popular Adam and Iris & Herringbone patterns.  Other Jeannette patterns include: Hex Optic, Cube (also known as Cubist), Floral, Sierra, Doric, Sunflower, Windsor, Doric & Pansy, Swirl, Homespun, and Sunburst. A number of children's dish sets in various patterns were made as well.

Consolidated Lamp and Glass Company
Consolidated Lamp and Glass Company of Coraopolis, Pennsylvania, was founded in 1894. The company made lamps, tableware, and art glass. Collectors are particularly interested in the glass made after 1925, including black satin glass, Cosmos (listed in its own category), Martele (which resembled Lalique), Ruba Rombic (1928-1932 Art Deco line), and colored glassware. Some Consolidated pieces are very similar to those made by the Phoenix Glass Company. The colors are sometimes different. Consolidated made Martele glass in blue, crystal, green, pink, white, or custard glass with added fired-on color or a satin finish. Consolidated Lamp and Glass Company closed during the Great Depression and sent its Martele molds to the Phoenix Glass Company, who eventually produced and sold it under a different name from 1933 to 1936. The company closed for the final time in 1967.

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