2016年6月26日星期日

History of chain saw Part Ⅱ

The first portable chainsaw development and Canadian mechanic James Suntech patented in 1918. He let his weight in 1930 after a lapse of the invention further by what has become the German company Festo in 1933 the company has become the development of production Festool portable power tools. In modern chainsaw other important contributors Joseph Buford Cox and Andreas STIHL; the latter patented and developed electric chain saw use in 1929 and in 1926 the contrarian website gasoline-powered saws and he founded a large number of companies producing them. In 1927, Emile linear interpolation, the founder DOLMAR, developed the world's first gasoline-powered saws and mass produce them.

German World War II interrupted the supply chain saws in North America, so that new manufacturers have emerged, including in 1947, he saw the vanguard forerunner Industrial Engineering Co., Ltd. (IEL). Limited and outboard companies in North America, the oldest part of the chainsaw manufacturer.


McCulloch chain saws to begin production in North America in the early 1948 models were heavy, the two devices have long. Chain saws are often so heavy that they had wheels like dragsaws. Other apparel line drive wheel from the power unit driving the cutting bar.


After World War II, in aluminum and engine design improvements to reduce the chainsaw to a point where people can carry them. In some areas skidder (saw) the crew has been replaced by the feller bunchers and harvesters.


Chainsaws have almost completely substituted forestry simple man power saw. They in many sizes, from for home and garden use, large "lumberjack" saw a small chainsaw. Military engineer training members of the unit, using a chainsaw because firefighters extinguish forest fires and fire ventilation structure.




More information click here.




没有评论:

发表评论