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2. Socket wrench - Wikipedia

   en.wikipedia.org/wiki/Socket_wrench

   Pass-through sockets and ratchets are built for 1 ⁄ 4-inch, 3 ⁄ 8-inch and 1 ⁄ 2-inch sets in both SAE and metric sizes. By using a fine tooth ratchet and socket system that allow a pass-through ratchet to be used as a conventional ratchet handle with interchangeable 1 ⁄ 4-inch and 3 ⁄ 8-inch drives some ratchets can be used with ...

3. New Britain Machine Company - Wikipedia

   en.wikipedia.org/wiki/New_Britain_Machine_Company

   Early tool sets consisted of hex drive sockets and an ell bar for the drive tool. Beginning in the 1930s, the None Better line consisted of a wide variety of 1/2 square drive tools with a Cadmium finish. At this time, New Britain Machine was also supplying tools for Sears in their Craftsman line of tools. These tools are easy to distinguish as ...

4. Blackhawk (tools) - Wikipedia

   en.wikipedia.org/wiki/Blackhawk_(tools)

   It made automotive tools, such as wrenches and sockets, [1] and a number of specialty tools. [2] Blackhawk introduced a number of innovations to conventional drive tools, such as the "Lock-On" system of locking sockets, [3] gearless ratchets, [4] [5] telescoping ratchet handles, [6] and 7/16" drive tools. [7]

5. Ratchet (device) - Wikipedia

   en.wikipedia.org/wiki/Ratchet_(device)

   A ratchet consists of a round gear or a linear rack with teeth, and a pivoting, spring-loaded finger called a pawl (or click, in clocks and watches [1] [2]) that engages the teeth. The teeth are uniform but are usually asymmetrical, with each tooth having a moderate slope on one edge and a much steeper slope on the other edge.

6. SK Hand Tools - Wikipedia

   en.wikipedia.org/wiki/SK_Hand_Tools

   Theodore Rueb, an engineer for the Sherman-Klove Company, went on to develop a new mechanism for a very successful line of ratchets, scaled from 1/4-inch drive up to 3/4-inch drive. The "round-head" ratchet has remained one of the most popular ratchet styles in the nearly nine decades since S-K's first development, and many modern ratchets are ...

7. 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 ...