Variable drive gearing for bicycle has drive ratio adjusted automatically in dependence on drive torque exerted on drive input shaft using planetary gearing with at least 2 sunwheels
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Workpiece holding device and workpiece holding method for a machine tool
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Arrangement for pivotable workpiece delivery into machine tool working region has drive spindle connected to holder for fixing drive element with attached rotatable workpiece holders
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Milling machine work separator
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Device for feeding the workpiece into a clamping area of a machine tool
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Holding device for multi-sided workpieces
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Backing support for workpiece in chuck of machine tool
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Support for workpieces to be clamped in the clamping device of a machine tool
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Thread cutting tap - has reduced dia. shank portion to permit retrieval of tap on fracture
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Finger nail varnish dryer - has plastics housing with electric motor and fan, and openings for fingers for speedier drying
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Collapsible bunk for saloon car - has fabric layer stretched over folding tubular frame supported by seat backs
