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A crowbar with a curved chisel end to provide a fulcrum for leverage and a goose neck to pull nails. A crowbar, also called a wrecking bar, pry bar or prybar, pinch-bar, or occasionally a prise bar or prisebar, colloquially gooseneck, or pig bar, or in Australia a jemmy, [1] is a lever consisting of a metal bar with a single curved end and flattened points, used to force two objects apart or ...
A pinch point bar has a chisel at one end. Bars are typically 5 to 6 ft (1.5 to 1.8 m) long and weigh 15 to 23 lb (6.8 to 10.4 kg). They are usually made entirely of cylindrical or hexagonal forged steel with a diameter of approximately 1 in (2.5 cm).
My Dad, a former Seabee, referred to the kind of bar with a chisel point on one end and the other end tapering to a rounded end, as a "crowbar"--that type of bar is sold in the local hardware stores as a "pinch point bar" (they have other bars that are similar to the photo in the "spud bar" article), and its original purpose was not digging--it ...
A breaker bar is able to create a larger amount of rotational force compared to a standard socket wrench. A standard breaker bar is strong enough to allow the user to apply up to 2,500 pound-feet (3,400 N⋅m) of torque without breaking the bar. [3] A high-end 1/2" socket wrench can withstand a maximum of 500 pound-feet (680 N⋅m) of torque. [4]
Pincers are a hand tool used in many situations where a mechanical advantage is required to pinch, cut or pull an object. Pincers are first-class levers , but differ from pliers in that the concentration of force is either to a point, or to an edge perpendicular to the length of the tool.
The cheater bar itself can become part of a de facto catapult with the worker in the line-of-fire. [1] If the over-torqueing results in the failure of any of the items in the jury rig, the fragments can injure workers in the line-of-fire. [2] The use of the cheater bar can result in component damage that can, in turn, harm workers. [3]
A jack chain is a type of chain made of thin wire, with figure-eight-shaped links and loops at right angles to each other. Jack chains are often used to suspend fixtures such as lights or signs, for decorative purposes, or as part of a cable lock. [1] Jack chain may be manufactured as either single-jack chain or as double-jack chain.
Pipe wrenches are classified by the length of the handle. They are generally available in sizes from 6 inches (150 mm) to 48 inches (1,200 mm) or larger. They are usually made of forged steel. Today, aluminium might be substituted to reduce the weight of the body of the wrench, although the teeth and jaw remain steel.