Posted 8 years ago
Happythisway
(10 items)
I know it is a stopper but for what?
Is it for a canteen? Or a hot water bottle? Or a picnic jug?
The threads are about the size of a light bulb base or just a smidgen smaller.
The patent dates are 1906. Thanks for looking.
Hot water bottle. (Bags.)
https://www.google.com/patents/US816503