Science and engineering in Manchester chemist visited Manchester in the 1840s. In his research in Manchester, Smith discovered the existence of acid rain, a by product of the industrial revolution. Smith consequently pushed for greater environmental awareness and helped to found the Noxious Vapours Abatement Society in Manchester, which raised awareness of the consequences of poor air. Joseph Whitworth was an engineer and inventor who hailed from Stockport, Cheshire (now Greater Manchester). A talented mechanic amongst various other engineering roles, for long periods of his life, he worked in factories in Manchester. Whitworth would ultimately devise a standard screw thread system, the first of its
Park Tool the bike. Other area bike shops and Schwinn Bicycle Company liked the stands and requested a production model. Soon after, the company expanded to include wheel truing stands, then expanded further into consumer wrenches and gauges. By the early 1980s, Hawkins and Engstrom were a perennial top ten Schwinn dealer with three stores but sold their bicycle shops to focus their efforts on the tool business. Today, both Art Engstrom and Howard Hawkins are retired. Park Tool is owned and operated by Eric Hawkins, Howard Hawkins' son, and now offers more than 300 bicycle repair tools in its line. The