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Armstrong was founded in 1890 as the Armstrong Bros. Tool Company in Chicago, Illinois by the five Armstrong brothers. The brothers manufactured bicycle parts and tools for repairing and manufacturing bicycles from the brothers' backyard shed and managed a retail store in downtown Chicago.
Chicago boom derrick. A Chicago boom derrick is a derrick with a boom which is attached to an external structure. The external upright member of the structure serves as the mast, and the boom is stepped in a fixed socket clamped to the upright. The boom is connected to at least three pulley systems to control the position of the boom.
Vaughan was founded in 1869 in Chicago, Illinois by Alexander Vaughan, an 18-year-old blacksmith, as a plumbing business. Vaughan soon set up a blacksmith shop behind a hardware store in Chicago owned by Sidney Bushnell. On June 15, 1869, Vaughan was granted a patent for an improved post auger [2] and began producing custom tools.
Rigging comes from rig, to set up or prepare. 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.
The company was founded as a supplier for businesses by William Wallace Grainger in 1927 in Chicago, Illinois, and incorporated as W. W. Grainger, Inc., in 1928. [7] Sales in the early days were generated primarily through mail order via post cards and a catalog. The MotorBook, as the catalog was originally called, was the basis for today's ...
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