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2. J.H. Williams Tool Group - Wikipedia

   en.wikipedia.org/wiki/J.H._Williams_Tool_Group

   The business was relocated to Brooklyn in 1884 and took the name J.H. Williams & Co in 1887. The company was one of the first to offer mass-produced drop-forged hand tools. [3] A second factory was opened in Buffalo, New York in 1914, now the site of General Motors' Tonawanda Engine plant. [4] The company was acquired by Snap-on in 1993.

3. 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 ...

4. 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 ...

5. Screwdriver - Wikipedia

   en.wikipedia.org/wiki/Screwdriver

   The user pushes the handle toward the workpiece, causing a pawl in a spiral groove to rotate the shank and the removable bit. The ratchet can be set to rotate left or right with each push, or can be locked so that the tool can be used like a conventional screwdriver. One disadvantage of this design is that if the bit slips out of the screw, the ...

6. 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.

7. List of screw drives - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_drives

   Torq-set is a cruciform screw drive used in torque-sensitive applications. The Torq-set head is similar in appearance to a Phillips drive in that it has a cross with 4 arms. In Torq-set however, the lines are offset from each other, so they do not align to form intersecting slots across the top of the head.