Keeping it Fizzy for Over a Century: the Crown Cap Closure


oxon-hill-cork

Figure 1.  Dessicated cork from Oxon Hill Manor (18PR175). Photo courtesy MAC Lab.

Baltimore has been home to a number of important inventions over the last several centuries; among them rubber surgical gloves, telephone poles and the Ouija board.  Perhaps few of these innovations have had as widespread of an influence as the crown cap closure.  Invented in 1890 and patented in 1892 by William Painter as a device for capping carbonated beverage bottles, crown caps became one of the world’s first successful disposable products.  In his patent application, Painter stated “… I have devised metallic sealing-caps embodying certain novel characteristics which render them highly effective and so inexpensive as to warrant throwing them away after a single use thereof..” (US Patent Office 1890). Continue reading