The familiar adjustable wrench in your toolbox may not be a crescent wrench at all. you know that. Steel handle. flat grip. Adjustable jaws. We call it that because it’s the easiest word to say. But calling all adjustable wrenches “crescent wrench” is like calling all paper towels Kleenex. It’s a brand name that won the war.
The real difference is in the geometry. And history.
The right crescent wrench has jaws that are almost parallel to the handle. Look at the head.
The opening extends the length of the tool. This design allows you to get into tight places where space is limited. The same cannot be said for the monkey wrench. Its jaws sit perpendicular to the handle. This makes the head bigger. Suitable for large, stubborn nuts that require more leverage than clearance. The parallel jaws of a crescent wrench are usually useful when trying to fit the tool between two closely spaced joists. If you’re working on huge pipe joints, an adjustable wrench might be a better choice.
This name itself is a historical coincidence. The Crescent Wrench is a specialty product manufactured by the Crescent Tool Company. Carl Peterson, an inventor from Jamestown, New York, created the first working model in the early 1900s. He got the idea from a Swedish visitor who described an adjustable mechanism. Peterson started with wood. He turned to metal. By 1910, he was selling commercial models. The design took off. People started using the brand name to refer to the entire class of adjustable wrenches.
Crescent Tool Company was eventually acquired by Cooper Industries. The brand is still familiar. However, the tools themselves have changed since the early wooden prototypes.
Older crescent wrenches relied on worm gears. Adjust the width of the chin by turning the small barrel. This is accurate. The speed is also very slow. Modern versions usually use sliding gears. Just push the slider up or down. Faster. Less hassle. Some early models were double-headed, with large jaws on each side. They are gone now. You won’t find them in new toolboxes.
したがって、次回家の修理でレンチを手に取るときは、このことを念頭に置いてください。 これはほとんどのモンキーレンチに当てはまります。 調整可能。 それらは鋼製であってもよい。 スライド式アジャスターが付いている場合もあります。 新月までに作られた可能性もあります。 ただし、名前に騙されて、すべてが同じように機能すると思わないでください。 平行にあごのデザインはクレセントスタイル特有のものです。 それは影響力についてです。 これは、他のツールでは到達できないスペースに適合するためです。
次回、手の届かないところにあるボルトを見つめるときは、このことを念頭に置いてください。 ヘッドの形状は開口部のサイズと同じくらい重要です。
