Isaac Hoover’s Popular Potato Digger

By Lisa Yako
Published on April 1, 2008
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Isaac Hoover, inventor of the Hoover digger and countless other devices, with his wife, Hannah. (Photos courtesy of Milan Historical Museum.)
Isaac Hoover, inventor of the Hoover digger and countless other devices, with his wife, Hannah. (Photos courtesy of Milan Historical Museum.)
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The Hoover digger was not the first potato harvester on the market but it was among the most popular. It was widely regarded as being reliable, well built and sturdy, as shown in this undated photo.
The Hoover digger was not the first potato harvester on the market but it was among the most popular. It was widely regarded as being reliable, well built and sturdy, as shown in this undated photo.
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A piece of literature dating to the Hoover-Prout era (1886-1910).
A piece of literature dating to the Hoover-Prout era (1886-1910).
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The Hoover company workforce in front of company facilities in an undated photo.
The Hoover company workforce in front of company facilities in an undated photo.
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“Think of it: An elevator digger without a cog. Vines and weeds carried to one side. And save your back and temper. And buy a digger you can ride.”
“Think of it: An elevator digger without a cog. Vines and weeds carried to one side. And save your back and temper. And buy a digger you can ride.”
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Necessity is the mother of invention. Never was that more true than with the invention of the potato digger. Before the advent of mechanized diggers, a farmer could only harvest as many potatoes as he could dig by hand. With a mechanized digger – like the one invented by Isaac Hoover – he could harvest hundreds of bushels a day. Hoover’s wasn’t the first mechanized potato harvester (that invention dates to the late 1860s) but it was one of the most popular early units.

Isaac Woolverton Hoover was born in 1845 in Groton Township, Erie County, Ohio, the eldest son of John and Elizabeth Hoover. In 1851, following John Hoover’s return from the California gold rush, the Hoover family settled on a 115-acre farm in Oxford Township, Erie County, Ohio. There, Isaac gained valuable skills from his father, a stone mason and farmer. In 1866, Isaac married Hannah Jane Beare and together they had three children. After moving several times, Isaac and his family established their permanent home on a large farm in Avery (just south of Sandusky), Ohio, in 1875.

Digging and designing

Hoover, a farmer, initially focused his energies on the potato crop. For a number of years, his farm produced the largest potato harvest in the county. But after years of tediously harvesting potatoes by hand, Hoover began to envision a mechanical potato digger. During the winter of 1884-1885, he designed and constructed his first digger and used it to harvest his 1885 crop.

Foreseeing the potential of his invention, he submitted a patent application in March 1885. The patent (No. 318,254) was granted May 19, 1885. According to Hoover’s patent application, the potato harvester had “mechanisms for digging or removing the tubers from the ground, sifting and separating them from the earth, stones, weeds, and stalks, and delivering them at the rear of the machine, on one side, into a receptacle or upon the ground to be gathered up; the weeds are then discharged from the machine on the opposite side from the delivery of the potatoes.”

The ground-powered potato digger was pulled by a team of horses, thus exerting force over the ground. As the cleated wheels rotated, they powered the machinery. The digger could harvest up to 500 bushels – a full 8 acres – of potatoes per day. Hoover’s invention was so popular among his friends and neighbors that he produced 10 more diggers during the winter of 1885-1886.

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