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Early Industrial Revolution-era factories had batteries of power tools driven by belts from overhead shafts. The prime power source was a water wheel or (later) a steam engine. The introduction of the electric motor (and electric distribution networks) in the 1880s made possible the self-powered stationary and portable tools we know today. [ 19 ]
A drawstring (draw string, draw-string) is a string, rope or lace used to "draw" (gather, or shorten) fabric or other material. Ends of a drawstring are often terminated with a sheath called an aglet. The ends may be tied to hold the drawstring in place (and simultaneously close an opening).
In mathematics and physics, the plate trick, also known as Dirac's string trick (after Paul Dirac, who introduced and popularized it), [1] [2] the belt trick, or the Balinese cup trick (it appears in the Balinese candle dance), is any of several demonstrations of the idea that rotating an object with strings attached to it by 360 degrees does not return the system to its original state, while ...
The M-1956 LCE continued application of the belt-supported-by-suspenders concept, adopted by the U.S. Army at least as early as the pattern 1903 equipment. [2] The M-1956 "Belt, Individual Equipment" or pistol belt differed little in form and function from the M-1936 pistol belt and would accommodate any of the pouches and equipment that would mount on the M-1936 belt.
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