Today in 1897, US Patent 596366 A was issued, an invention of Robert S. Graham, for his “Stopper Fastener.” There’s no Abstract, although in the description it includes these claims:
This invention relates to a new and useful improvement in devices for holding corks in bottles, the object being to utilize the expansion of the contents of a bottle as an active medium to lock the fastener in position.
The object of my invention is to provide a non-expansible fastener, which is to be inserted loosely in position on the cork in the neck of the bottle manually or by machine, as desired, after which no further manipulation thereof is required, the contents of the bottle expanding and forcing the cork outwardly and locking the fastener and the cork in place. When the fastener has been locked in place, it willy firmly hold the cork against further outward movement, and by providing a hole in the fastener a corkscrew may be inserted to remove the cork, which can easily be done, or the fastener may be first pulled out of place by the introduction of the end of a corkscrew or other instrument thereunder and the cork subsequently removed.
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