The red cylindrical section is a rubber plug that fits into the bottle mouth.
The two curved “wings” act like handles/leverage arms.
The center post with the round top is the push-button/press point:
Pressing/engaging it drives the rubber plug into a tighter seal (a “pull-down” clamp effect), helping the stopper grip the bottle opening more firmly.
Key visual features (from the photos)
Metal top cap with stamped branding and patent info
Two symmetrical curved side wings for grip
Central vertical rod with a round thumb button
Red rubber stopper body showing age-related wear and darkened spots (typical for vintage rubber)
Why collectors like it
Functional vintage barware with a distinctive mechanical design
Clear manufacturer markings (EKCO U.S.A.) that aid identification
Fits well in collections focused on:
Vintage kitchen gadgets
Soda/beer memorabilia
Primitive or industrial-style antiques
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