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Two spanners, both nominal size 5 ⁄ 8 in, with a diagram superimposed to show the logic that allows them both to be nominal size 5 ⁄ 8 in when their actual sizes are clearly different (across-flats distance vs screw diameter). The across-flats definition is the common standard today, and has been for many decades.
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. The word ratchet is also used informally to refer to a ratcheting socket wrench.
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 ...
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clamp ratchet wrench: clamp ratchet spanner An open-ended multi-size ratchet wrench. The ratcheting mechanism allows the nut to be clamped on or loosened with a reciprocating motion; flip the wrench to change the direction of the drive. The wrench takes the advantage of the clamp action to allow multiple sizes in both SAE and metric standards ...
In 1957, Luther Kilness filed patent numbers 2,554,990 [3] and 2,981,389 [4] with the United States Patent Office. This design can be said to be the next evolution of the ratchet design of SK Hand Tools' Theodore Rueb. [1] This ratchet was a very successful design, lasting from its introduction in 1961 to the eventual closure of New Britain in ...
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 ]
Two Indian chemical companies have been indicted for allegedly importing ingredients for the highly addictive opioid fentanyl into the United States and Mexico, the U.S. Department of Justice said ...