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On August 17, , Solymon Merrick of Springfield, Massachusetts patented the first wrench.
The wrench typology is inspired by typologies of prehistoric stone tools. Merrick&#;s patent was issued over two million years after the idea of wrench was first born.
The wrench basically includes notches at the mouth for gripping. The wrench is pulled at a right angle to the axes of the lever-action and the bolt or nut.
Charles Moncky invented the monkey wrench around . Moncky&#;s wrench was named using a purposeful misspelling of his name.
Then, Jack Johnson, world&#;s first African American heavyweight champion patented a wrench (U.S.patent#1,413,121) in .
In , there was a controversy when it was circulated on social media via viral picture-sharing that ack Johnson invented and patented the wrench and the term &#;monkey&#; was applied to it as a derogatory name for black people. As it turns out, it was a hoax.
Patent Information
Publication number: US X
Patent Title: Wrench
Publication date: 17 Aug
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USX
A wrench is a tool - the English
call it a spanner - that is usually operated by hand, and is made for tightening
or loosening bolts, nuts or anything that needs to turn. Solymon Merrick
patented the first wrench in .
The physics of a wrench are that the tool works as lever. There are notches at the mouth for gripping. The wrench is pulled at a right angle to the axes of the lever-action and the bolt or nut. Some wrenches have mouths that can be tightened to better fit various objects that need turning.
Monkey Wrench
Charles Moncky invented the monkey
wrench around .
Ratchet Wrench
Robert Owen, Jr ( - ) invented
the ratchet wrench. Owen received a patent on September 9, . U. S.
Patent number 1,072,980.
Pipe
Wrench
On September 13, , a patent
was granted to Daniel C. Stillson, a steamboat fireman, for a "wrench".
Stillson invented the pipe wrench - sometimes called the Stillson pipe wrench.
Stillson, suggested to the heating and piping firm Walworth manufacture
a design for a wrench that could be used for screwing pipes together. Previously,
serrated blacksmith tongs had been used for that purpose. The owner, James
Walworth told Stillson to make a prototype and &#;either twist off the pipe
or break the wrench.&#; Stillson's prototype twisted the pipe successfully.
His design was then patented and Walworth manufactured the wrench. Stillson
was paid about $80,000 in royalties during his lifetime.
Jack Johnson
The world's first African American
heavyweight champion patented a wrench (U.S.patent#1,413,121) on April
the 18th, .
Ratchetless
Wrench
The idea for a "ratchetless" wrench
came about because of an invention by NASA/Goddard Space Flight Center
(GSFC) engineer John Vranish.
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