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A pneumatic jackhammer Video: A construction worker uses a jackhammer in Japan. A jackhammer (pneumatic drill or demolition hammer in British English) is a pneumatic or electro-mechanical tool that combines a hammer directly with a chisel. It was invented by William McReavy, who then sold the patent to Charles Brady King. [1]
Breakers are often referred to as "hammers", "peckers", "hoe rams" or "hoe rammers". These terms are popular and commonly used amongst construction / demolition workers. [ 1 ] [ 2 ] The first hydraulic breaker, Hydraulikhammer HM 400, was invented in 1967 by German company Krupp (today German company Atlas Copco ) in Essen .
A drilling hammer, [5] club hammer, lump hammer, crack hammer, mini-sledge or thor hammer is a small sledgehammer whose relatively light weight and short handle allow one-handed use. [6] It is useful for light demolition work, driving masonry nails, and for use with a steel chisel when cutting stone or metal. [ 7 ]
Shown here are: A. Ball-peen hammer B. Straight-peen hammer C. Cross-peen hammer The claw of a carpenter's hammer is frequently used to remove nails. A large hammer-like tool is a maul (sometimes called a "beetle"), a wood- or rubber-headed hammer is a mallet , and a hammer-like tool with a cutting blade is usually called a hatchet .
A rotary hammer, also called rotary hammer drill [1] is a power tool that can perform heavy-duty tasks such as drilling and chiseling hard materials. [2] It is similar to a hammer drill in that it also pounds the drill bit in and out while it is spinning. However, rotary hammers use a piston mechanism instead of a special clutch.
The Detroit Demolition Project was founded in 2014 to remove blight from the city’s urban properties with the goals of minimizing adverse environmental and health risks, safely salvaging or disposing unused material, and leaving sites in suitable condition for redevelopment.