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  2. Yankee screwdriver - Wikipedia

    en.wikipedia.org/wiki/Yankee_screwdriver

    The trade name "Yankee" screwdriver was first marketed by North Brothers Manufacturing Company in ≈16 April 1895, with the No. ≠130 spiral ratchet screwdriver. Yankee soon became and still is a well-known name in automatic spiral ratchet screwdrivers, with several other models, and model improvements patented by North Bros. over a 40-year ...

  3. Screwdriver - Wikipedia

    en.wikipedia.org/wiki/Screwdriver

    Spiral ratchet screw drivers, often colloquially called Yankee screwdrivers (a brand name), provide a special mechanism that transforms linear motion into rotational motion. Originally the " Yankee " name was used on all tools sold by the North Brothers Manufacturing Company but later, after Stanley purchased the company, it became synonymous ...

  4. SK Hand Tools - Wikipedia

    en.wikipedia.org/wiki/SK_Hand_Tools

    The company has a tool line of over 3,500 items including wrenches, ratchets, screwdrivers, tool boxes and air tools. In 2021, SK was acquired by Hangzhou GreatStar Industrial. Jay Leno described the company as "an iconic American brand for decades," [2] and the company is known for inventing the round-head ratchet wrench.

  5. Torque screwdriver - Wikipedia

    en.wikipedia.org/wiki/Torque_screwdriver

    A torque screwdriver is a screwdriver with components that ensure tightening to a specified torque, ensuring tightening which is sufficient, but not excessive. An insufficiently tightened screw connection may loosen in operation, and excessive tightening can damage parts; for example, if the nuts holding the wheel of a car in place are too ...

  6. Socket wrench - Wikipedia

    en.wikipedia.org/wiki/Socket_wrench

    Socket set with ratchet (above), four hex sockets and a universal joint. A socket wrench (or socket spanner) is a type of spanner (or wrench [1] in North American English) that uses a closed socket format, rather than a typical open wrench/spanner to turn a fastener, typically in the form of a nut or bolt.

  7. North Brothers Manufacturing Company - Wikipedia

    en.wikipedia.org/wiki/North_Brothers...

    North Bros. key acquisition was the hiring of Zachary Furbish when it purchased the Forest City Screwdriver Co in 1897. He brought with him patents related to a spiral ratchet screw driver and considerable experience in tool design. This was their foothold into the tool manufacturing industry which would later become the core of their business.

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