Crowbar (tool)

The crowbar or the crowbar is a simple tool for breaking, lifting and moving. Their effect is based on the lever principle. It consists of a solid, sufficiently large metal rod, usually made of steel. One end is used to touch the other end is flat, in order to penetrate into narrow columns, and angled, so you can pry.

The crowbars, which are used by the fire department or the Agency for Technical Relief, are round, about 30 mm thick steel bars and have a length of 700, 1200 or 1800 millimeters.

Variants

A special type of crowbar is the brunt tree.

Another special form of crow bar, which was taken over in recent years by the U.S. fire departments, is named after the inventor Hugh Halligan Halligan tool. Three different blades ( Kuhfußklaue at an angle of 30 ° to the handle, wedge and mandrel at an angle of 90 ° to the stem ) allow the door opening and other technical assistance.

The well-known from the carpentry and building trade crow bar, wrecking bar also, the center has a wedge-shaped gap through which one penetrates further and both sides under the heads of nails and screws. Often there are also combined tools, on the one hand wear a crow bar and on the other hand are like a crowbar.

Colloquial language

Metaphorically spoken by a procedure " with a crowbar " when a target with primitive, drastic measures without regard to side effects to achieve is attempted.