Eli Whitney Blake
An American inventor who literally paved the way for modern roads by creating a machine that could crush stone with reliable, brute force.
1795–1886 (age 91)·American inventor·Birthday: January 27
Biography
Eli Whitney Blake was an inventor who carried the mechanical ingenuity of his more famous uncle, Eli Whitney, into the bedrock of American infrastructure. A skilled mechanic and manufacturer, he first found success with a superior mortise lock, a secure door hardware that became a standard. But his name is etched in stone—or rather, in the breaking of it. Tasked with providing macadam for New Haven's streets, Blake was dissatisfied with the slow, labor-intensive methods of breaking rock by hand. In 1858, he designed and patented the Blake rock crusher. This jaw-based machine, inspired by the human mouth's chewing motion, was a workhorse of simple, durable design. It revolutionized road construction and mining, providing the vast quantities of crushed stone needed for the railroads and highways that were stitching the continent together. Blake's invention didn't just build roads; it built the foundation for an industrializing nation's expansion.
#1 When Eli Was Born
The biggest hits of 1795
Eli's Life & Times
The world at every milestone
1795Born
1800Started school
1808Became a teenager
1811Could drive
1813Could vote
1816Turned 21
1825Turned 30
1835Turned 40
1845Turned 50
1855Turned 60
1865Turned 70
President: Andrew Johnson
1875Turned 80
President: Ulysses S. Grant
1886Died at 91
Statue of Liberty dedicated in New York Harbor
President: Grover Cleveland
Key Achievements
- Invented the Blake rock crusher, the first practical mechanical jaw crusher, which transformed road construction and mining.
- His stone crusher earned him induction into the National Inventors Hall of Fame in 2007.
- Designed and manufactured a widely adopted and improved mortise lock for doors.
- Co-founded the Blake Brothers factory in Westville, Connecticut, which produced his locks and crushers.
Did You Know?
He was the nephew of Eli Whitney, inventor of the cotton gin.
His original stone crusher was so well-built that one of the first machines remained in service for over 70 years.
The working principle of his jaw crusher is still used in modern aggregate processing equipment.
Beyond locks and crushers, he also held patents for a paper file fastener and a cotton-gin saw.
“My stone crusher built the roads that hold this country together.”
