Florence Parpart

Without this woman, your fridge would still be a wooden box full of melting ice.

Florence Parpart patented the electric refrigerator in 1914.

Before that, Americans relied on iceboxes.

Bulky, unreliable, and dependent on daily ice deliveries.

Parpart wasn’t an engineer.

She trained as a stenographer and worked her way up to secretary at the Eastern Sanitary Street Cleaning Company in New Jersey.

That’s where she filed her first patent: a mechanized street sweeper designed to reduce manual labor and trap dust instead of spraying it into the air.

Her invention was a commercial success.

Cities like Chicago and Hartford leased the machines.

5,000 New Yorkers signed a petition to get them adopted.

She filed the patent in 1899, listing herself and Hiram Layman (her manager at the time, later her husband).

At the time, women inventors often listed men as co-inventors to avoid gender bias and help secure funding.

She married Hiram in 1903.

A year later, they filed a second version of the street sweeper.

By 1913, she applied for a patent for something else: a refrigerator powered by electricity.

Existing refrigeration tech was dangerous.

Some used toxic chemicals.

Others were impractical for home use.

Parpart’s idea was safer: circulating cold water using electric power to keep food cool.

The patent was approved in 1914.

She and Hiram sold the product directly to companies and supervised commercial production.

She never licensed her design. She wanted to run the business.

They moved between New York, New Jersey, and Pittsburgh until Hiram’s death in 1919.

Florence returned to New York, where she died in 1930.

By then, her refrigerator design was already in widespread use.