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  2. Breaker (hydraulic) - Wikipedia

    en.wikipedia.org/wiki/Breaker_(hydraulic)

    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 .

  3. Pile driver - Wikipedia

    en.wikipedia.org/wiki/Pile_driver

    Concrete spun pile driving using diesel hammer in Patimban Deep Sea Port, Indonesia. A modern diesel pile hammer is a large two-stroke diesel engine. The weight is the piston, and the apparatus which connects to the top of the pile is the cylinder. Piledriving is started by raising the weight; usually a cable from the crane holding the pile ...

  4. Robertson screw - Wikipedia

    en.wikipedia.org/wiki/Robertson_screw

    Many screws used in electrical applications (for example, a typical NEMA 5-15R, breaker screws, and conduit screws) use a combination of a slotted/Phillips/Robertson screw head. A few tool manufacturers make bits to engage this screw head better than the traditional Phillips allowing for more torque before camout, for example, the C1 and C2 ...

  5. Jackhammer - Wikipedia

    en.wikipedia.org/wiki/Jackhammer

    Larger jackhammers, such as rig-mounted hammers used on construction machinery, are usually hydraulically powered. These tools are typically used to break up rock, pavement, and concrete. A jackhammer operates by driving an internal hammer up and down. The hammer is first driven down to strike the chisel and then back up to return the hammer to ...

  6. Antique tool - Wikipedia

    en.wikipedia.org/wiki/Antique_tool

    Categories of tools range from the broad – planes, rules, braces, hammers, etc. to the specific – planes made by the Gage Company of Vineland, New Jersey, for example. People who are new to the hobby should know that there are many good modern reference books that will guide you in your search, as well as many reprints of the catalogs in ...

  7. Wrecking yard - Wikipedia

    en.wikipedia.org/wiki/Wrecking_yard

    Once vehicles in a wrecking yard do not have more usable parts, the hulks are usually sold to a scrap-metal processor, who will usually crush the bodies on-site at the yard's premises using a mobile baling press, shredder, or flattener, with final disposal occurring within a hammer mill, which smashes the vehicle remains into fist-sized chunks ...