On May 27, 1919, Eldorado Jones received a U.S. patent for a collapsible hat rack, expanding her line of practical, space-saving domestic inventions.
On May 27, 1919, Eldorado Jones was granted U.S. Patent No. 1,304,525 for a collapsible hat rack, further extending her portfolio of practical inventions designed for everyday use, particularly by women.
The collapsible design addressed the need for space-saving storage of hats, an essential accessory in early 20th-century fashion. The device could be folded when not in use and easily transported or stored, matching the increasingly mobile lifestyles of middle-class women. This invention fit neatly within the product line of Eldorado Inventions, Inc., which specialized in compact domestic tools like travel ironing boards and lightweight irons.
Although the hat rack was a modest device compared with her later aviation muffler, the dated patent underlines her continuous engagement with the patent system and steady output as an independent inventor. Each patent represented both technical creativity and legal recognition in a field where women rarely appeared on patent rolls.
The 1919 patent also demonstrates that Jones’s strengths lay in practical mechanical design, often focusing on portability and efficiency. These qualities would later be crucial when she adapted her skills to solve the more complex problem of aircraft engine noise, applying similar mechanical ingenuity to aeronautical engineering.