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A crane hook and overhaul ball assembly. An overhaul hook ball, also known as an overhaul ball or headache ball, is a heavy weight that is attached to the end of a crane's cable, above the lifting hook. It is used to keep the cable under sufficient tension even when no load is attached.
Rigging is the equipment such as wire rope, turnbuckles, clevis, jacks used with cranes and other lifting equipment [1] in material handling and structure relocation. Rigging systems commonly include shackles , master links and slings , and lifting bags in underwater lifting.
A lifting hook with a safety latch. A lifting hook is a device for grabbing and lifting loads by means of a device such as a hoist or crane.A lifting hook is usually equipped with a safety latch to prevent the disengagement of the lifting wire rope sling, chain or rope to which the load is attached.
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A lewis (sometimes called a lewisson) is one of a category of lifting devices used by stonemasons to lift large stones into place with a crane, chain block, or winch. It is inserted into a specially prepared hole, or seating, in the top of a stone, preferably above its centre of mass.
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They proved to have a remarkable aptitude for the work and by the end of the project there were 70 iron and steel riveters in the Kahnawake band, who went on to work on projects throughout Canada. Minto Bridge in Ottawa, built in 1900. In 1890 civil engineer for various railways James Ross replaced Job Abbott as president of the company.
EOT cranes are extensively used in warehouses and industry. [2] An EOT crane is able to carry heavy objects to anywhere needed on the factory floor, and can also be used for lifting. However, it cannot be used in every industry. The working temperature is to limited to a range between -20°C to 40°C. [citation needed]