LaUnique African AmericanBookstore & Cultural Arts Center - 🍂🍁🍂🍁🍂🍂 Repost from @blackhistoryunlocked • Jack Johnson, the first Black heavyweight boxing champion, patented a wrench (U.S. patent #1,413,121) on April 18, 1922 His
Daily Black History Facts - April 18, 1922: Jack Johnson received a patent for his improvement to the monkey wrench. While Johnson was in Leavenworth Federal Prison in Kansas, he found a
![Early Sports and Pop Culture History Blog: Iowa Farmers, Wooden Shoes and French Silk Weavers - a Laborious History and Etymology of Monkey-Wrench Sabotage Early Sports and Pop Culture History Blog: Iowa Farmers, Wooden Shoes and French Silk Weavers - a Laborious History and Etymology of Monkey-Wrench Sabotage](https://1.bp.blogspot.com/-z66LRscSui4/WOaZqwSw3KI/AAAAAAAADuM/IDCh2CRYOQ890sNl9VA8WYj-0tJ5wAe9wCEw/s1600/The%2BBuffalo%2BCommercial%2BOctober%2B5%2B1896%2Bpage%2B7%2B-%2Bmonkey%2Bwrench%2Badvertising%2Bimage%2B-%2BCopy.jpg)