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Michigan logging wheels
Michigan logging wheels,〔(The backtracks of high wheel logging by Lorraine Platz )〕 also known as big wheels, high wheels, logging wheels, logger wheels, lumbering wheels, bummer carts, katydids or nibs, are a type of skidder.〔(Out of the woods - Big Wheels history )〕 It extended the season in which the logging industry could extract timber from the North Woods of Michigan, by removing the need for icy ground to travel over. The logging wheels were a specially designed large set of wooden wagon wheels that could carry logs that were up to 100 feet in length, several at a time.
Michigan logging wheels ''(big wheels)'' were invented by Silas C. Overpack in 1875.〔Powers, Perry Francis, ''A History of Northern Michigan and Its People'', 1912, p. 707, Lewis Publishing Company, An original at University of Michigan.〕〔(Moving wood in Michigan by Arvind Badrinarayanan )〕 At the time Michigan was the nation's leading producer of lumber.〔(Lumbering in Michigan )〕〔(Background reading - Lumbering in Michigan by Maria Quinlan )〕 His equipment could be identified as genuine as it was always painted red.〔(The Big Wheels )〕
== Usage ==
Overpack's logging wheels could haul logs without the need for icy ground. They did not sink into mud in the wet terrain of the northern woods where ordinary wagon wheels would get mired in the spring thaw. The wheels also enabled a team of horses to pull several logs at a time. The logs were held by a chain that suspended the logs' weight from the wheel axle, creating a stabilizing, low center of gravity.〔(Kids' education on logging industry )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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