“H G over triangle” mark
This factory was opened in 1907 by Schram Automatic Sealer Company, a prolific maker of fruit jars based in St. Louis, Missouri. The company name was changed in 1913 to Schram Glass Manufacturing Company. The plant was purchased by Ball Bros. Glass Manufacturing Company (based in Muncie, Indiana) in 1925.
Ball Bros. was the most successful fruit jar manufacturer in the world, producing many millions of jars each year at the time. They had a number of glass plants in the United States and the Hillsboro factory was one of them.
Ball continued to operate the Hillsboro glass plant (with some occasional shutdowns over the years) from 1925 until 1961, at which time it was sold to Hiram Walker & Sons Distilleries (based in Walkerville, Ontario, Canada), already a heavy buyer of amber whiskey bottles produced at that plant.
As of October 18, 1961, the plant officially became the Hillsboro Glass Company, a subsidiary of Hiram Walker. All, or nearly all, of the glass production consisted of amber bottles and jars. The mark seen on the base of many of these containers consists of the letters “H” and “G” positioned over a somewhat “horizontally flattened” triangle.
In 1996, Hillsboro Glass was sold to G & G Investments, a holding company based in Pittsburgh. On August 22, 1997, an announcement was made that the plant would soon close, and the factory shut down completely in October of 1997, with, sadly, about 250 employees losing their jobs as a result.
For an extensive list of marks and logos seen on bottles, fruit jars, insulators and tableware, please check out my five pages of alphabetical listings here on the Glass Bottle Marks pages, starting with Page One.
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