Silex Vacuum

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1913 Silex marked "Origional Silex" patent pending

In 1913 Silex made the claw foot model before mass producing the type shown below in the 1914 model.

Silex produced a laboratory style vacuum coffee brewer like many that were sold around the world. Around 1913 Silex sold their first vacuum coffee maker in the United States. The picture below is believed to be one of the earliest known Silex Coffee Percolators.

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My thanks to Brian Harris for providing me with this ad from for the 1913 Silex possibly imported from Germany. This is his full link,

https://www.baharris.org/coffee/Ads/1913_BrooklynDailyEagle_Silex.jpg

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1914 Silex Brochure

In 1914 Silex introduced the style shown in the picture below.

Silex 1914 U. S. Patent

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Silex ads from circa 1917

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1922 Fry Silex

In 1922 Silex approached the H.C. Fry Glass Company asking if they could help produce their "Silex coffee maker." The bottom flask was the company's chemical glass flask. The Fry Silex was the first stovetop coffee maker ushering in the fantastic success of the Silex Company. The below pictures show the opalescent Fry Silex of 1922. It is believed that Fry made this glass for only a few years

This Patent was applied for in 1922 and granted to the H.C. Fry Glass Company in 1927.

Heat-resisting glass
US US1623301A Ralph F Brenner H C Fry Glass Company