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Basic consumer units use a curved shaft, similar to a basic line trimmer. More professional units use a straight shaft with a gearbox at the cutting head end. Top-of-the-line units use a straight "split" shaft with a disconnection point partway along the shaft, allowing the cutting head to be replaced by other accessories such as pole pruners ...
String trimmers powered by an internal combustion engine have the engine on the opposite end of the shaft from the cutting head, while electric string trimmers typically have an electric motor in the cutting head, but there are other arrangements, such as where the trimmer is connected to heavy machinery and powered by a hydraulic motor.
Andreas Stihl designed and hand built his first chainsaw in 1926. [5] The saw was electrically powered, and weighed about 48 kg (106 lb). [6] Stihl grew slowly initially, as the chainsaws came to the market about the same time as the Great Depression; with manpower cheap, and old two-man saws proven, there was no need for power saws.
Even in places where the electricity grid is mostly powered by fossil fuels, the discrepancy is huge because gas-powered mowers use an estimated 13.7 times as much energy as electric models.
In 1929, Andreas Stihl married Mia Giersch (1903-2002), [2] with whom he had four children, among them Hans Peter Stihl (born 1932) and Eva Mayr-Stihl (born 1935), who succeeded her father in managing the company and remaining Vorstand until 2002. [9] Stihl divorced his first wife in 1960, and married Hannelore Wegener-Doberg (1927-2009) the ...
Weed Eater is a string trimmer company founded in 1971 in Houston, Texas by George C. Ballas, Sr., the inventor of the device.. The idea for the Weed Eater trimmer came to him from the spinning nylon bristles of an automatic car wash.