Gleason Corporation is a prominent machine tool builder based inRochester, New York, US.[1] It has manufacturing plants in the US, Germany, Switzerland, China, Japan, and India as well as sales and service offices in all major industrial hubs globally.
Gleason's importance lies ingear manufacturing — especially in building the machine tools that themselves cut the teeth. These gears and these machines are sold to industrial customers in a wide variety of fields, such as companies in the automotive and aerospace industries.
 | This sectionneeds additional citations forverification. Please helpimprove this article byadding citations to reliable sources in this section. Unsourced material may be challenged and removed.(January 2023) (Learn how and when to remove this message) |
The Gleason Works, the machine shop that eventually evolved into the Gleason Corporation, was founded by Irish immigrant William Gleason in 1865 after his previous experience in other machine shops.
An important product came in 1874 with Gleason's invention of the first bevel gear planer, aplaner with integralindexing head designed to specialize in planingbevel gears. Planers and indexing heads had been combined before, but never in the winning form factor that Gleason created specifically for gears.
Gleason's sons,James E. and Andrew C. Gleason as well as his daughterKate Gleason were integral to the company's early success.
After engineers atPackard developedspiral bevel gears, Gleason pioneered the machine tools to mass-produce them (with automotivedifferentials being the primary market). Packard and Gleason settled an infringement lawsuit regarding Packard's patents (U.S. patent 725,328 andU.S. patent 1,209,682) and Gleason's patent (U.S. patent 1,325,784).
In 1927, Gleason Works again led the innovation in this market, as it was the first machine tool builder to create machine tools to cut hypoid gears (which are an advanced variant of spiral bevel gears).[2]
Gleason was apublicly traded company under the symbol 'GLE' on theNew York Stock Exchange. In December 1999, it agreed to be acquired by its chairman and chief executive, the senior management, the Gleason Foundation, and private equity firmVestar Capital Partners.[3]
There are multiple companies under the Gleason Corporation umbrella: