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He was educated as an electrical engineer at the University of Trondheim, Norway. The company initially started as a trading company with products ranging from fuses and light bulbs to escalators , elevators and electric wire rope hoists , the latter being of foreign make.
Both wire rope and chain hoist have been in common use since the 1800s, however mass production of electric hoists did not start until the early 1900s and was first adapted by Germany. [citation needed] A hoist can be a serial production unit or a custom unit. Serial production hoists are typically more cost-effective and designed for a ten ...
A portable cord (also known as portable cordage, flexible cord, or extension cord) is a cable with multiple conductors used for temporary electrical power connections requiring flexibility. The cord can be employed in a range of applications, such as operating motors in small and large tools, equipment, power extensions, home appliances , and ...
A wire rope clamp designed to loop wire cable without the losing the integrity of the wire was invented by Oliver Crosby in 1886. [3] American Manufacturing Company invented further enhancements to the construction industry by establishing steam-powered hoists in 1889 and the largest electric hoists, up to 15 hp.
A similar heavy-duty unit with a combination chain and cable became available in 1935 that was used by railroads, but lacked the success of the cable-only type units. [1] A similar tool to a come-along is a cable puller, which does not have a drum and ratchet but directly grips the cable, allowing unlimited lengths of wire rope to be used.
Portable appliances use single-phase electric power, with two or three wired contacts at each outlet. Two wires (neutral and live/active/hot) carry current to operate the device. [3] [4] A third wire, not always present, connects conductive parts of the appliance case to earth ground. This protects users from electric shock if live internal ...
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- 1531 Alum Industrial Drive, Columbus, Ohio · Directions · (800) 878-7305