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Rope is used to lift or pull objects, sometimes in combination with a windlass, bullwheel, or block and tackle. Cranes are sometimes used to lift assemblies and materials. Commander or beetel is a large, long handled mallet for forcing timbers together or apart. Rollers, carts, or other lifting equipment are used to move the heavy timbers
Hoist atop an elevator. A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium.
The Roman Polyspaston crane, from Ancient Greek πολύσπαστον (polúspaston, “compound pulley”), when worked by four men at both sides of the winch, could lift 3000 kg. In case the winch was replaced by a treadwheel, the maximum load even doubled to 6000 kg at only half the crew, since the treadwheel possesses a much bigger ...
The first type of crane machine was the shadouf, which had a lever mechanism and was used to lift water for irrigation. [ 3 ] [ 4 ] [ 5 ] It was invented in Mesopotamia (modern Iraq) circa 3000 BC. [ 3 ] [ 4 ] The shadouf subsequently appeared in ancient Egyptian technology circa 2000 BC.
World Health Organization chief Tedros Adhanom Ghebreyesus has been released from Rio de Janeiro's Hospital Samaritano Barra da Tijuca after spending the night under observation, the hospital said.
Genie is an American company that manufactures work lifts and platforms used in construction, maintenance, warehouse stocking, and equipment installation. Founded in 1966 by Bud Bushnell, the company operated independently until acquired by Terex in 2002. [1]