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Yankee screwdriver. Stanley 130B, 135B and Handyman 233H. 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 ...
Socket wrench. Lever with interchangeable socket heads to grip or turn a bolt or nut. 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 ...
The rack and pawl are both restricted to only linear movement (not shown). A ratchet (occasionally spelled rachet) is a mechanical device that allows continuous linear or rotary motion in only one direction while preventing motion in the opposite direction. Ratchets are widely used in machinery and tools.
This is particularly useful for small screws, which are otherwise very difficult to attempt to handle. Many screwdriver designs have a handle with a detachable tip (the part of the screwdriver that engages the screw), called bits as with drill bits. This provides a set of one handle and several bits that can drive a variety of screw sizes and ...
The North Brothers Manufacturing Company (North Bros. Mfg. Co. or more simply North Bros.) was an American manufacturer based in Philadelphia, Pennsylvania that specialized in the making of hand tools, small appliances and some specialized power tools. They were family owned and operated for over 60 years before being acquired by the Stanley ...
List of screw drives. At a minimum, a screw drive is a set of shaped cavities and protrusions on the screw head that allows torque to be applied to it. [1][2] Usually, it also involves a mating tool, such as a screwdriver, that is used to turn it. Some of the less-common drives are classified as being "tamper-resistant".
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