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Unknown Lathe No. 190

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Resident in France, this small "backgeared" and screwcutting lathe appears to have a centre height of around 100 mm and take perhaps 250 mm between centres.
Of the most basic specification, it has a bed with a pair of narrow square-section ways shared between the carriage and tailstock, a single swivelling tool slide without a micrometer collar, a tailstock spindle moved using a cheap and easy-to-manufacture design employed in the 1800s (and clamped by a split casting) a solid nut gripping the leadscrew, an un-graduated leadscrew hand wheels and a dog clutch engaged not with a lever, but by sliding a knurled ring along by hand.
The drive system has almost certainly been modified from either a flat or round leather belt running over  a cast-iron pulley to a narrow-section V-belt on a modern 4-step one in aluminium. Instead of driving the spindle directly, the pulley is carried a shaft to the rear with the drive transmitted by a pair of gears able to be slid into and out of mesh with a matching pair - and so give four high and four low speeds. Hence, not a "proper" backgeared system, as explained here, but one that still produces a useful range of speeds.



Unknown Lathes Home Page

Unknown Lathe No. 190
E-MAIL   tony@lathes.co.uk
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