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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]
A medieval bill with a spike and a hook. A bill is a class of agricultural implement used for trimming tree limbs, which was often repurposed for use as an infantry polearm. In English, the term 'Italian bill' is applied to the similar roncone or roncola, but the Italian version tended to have a long thrusting spike in addition to the cutting ...
By World War II, rivet guns were used widely in U.S. aircraft factories both for riveting aluminum sheets, and for flow forming, the process of working aluminum sheet into and over wooden forms by the application of the pneumatic rivet gun. Post-war industry brought many new applications for the "air hammer" technology. Among these were:
Drilling a blast hole with a pneumatic drill (jackhammer). A pneumatic tool, air tool, air-powered tool or pneumatic-powered tool is a type of power tool, driven by compressed air supplied by an air compressor. Pneumatic tools can also be driven by compressed carbon dioxide (CO 2) stored in small cylinders allowing for portability. [1]
Pneumatic hammer may refer to: Air hammer (fabrication), a pneumatic hand tool used to carve in stone, and to break or cut metal objects apart; Air hammer (pile driver), a pile driver that is driven by air; Jackhammer, a pneumatic or electro-mechanical tool that combines a hammer directly with a chisel; Nail gun, a form of hammer used to drive ...
A metal surface is finished by hammering it with a planishing panel hammer or slapper file against a shaped surface called a planishing stake that is held in a vise or a mounting hole in a blacksmith's beak anvil, [2] or against hand-held, shaped, metal tools that are known as dollies or anvils. The shape of the stake or dolly has to match the ...