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history of windmills

Jul 13, 2019 The first Dempster vaneless windmill was produced in 1892. For over fifty years, the Dempster Mill Manufacturing Company produced a range of wooden vaneless windmills. The market vanished for traditional style mills in the early 1920s, as consumers began to prefer self-oiling mills. Self-oiling windmills had an enclosed gearbox with an oil-bath ...

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