One of the earliest processes to be mechanised was the conversion of
carded fibres into a lightly twisted thread. The slubbing billy came into use
by the 1790s and looked very similar to an early spinning jenny.
After mechanisation, carding was carried out on a carding set, a series of rollers
which produced a flat web of fibres. This passed through a second machine called
a condenser which split the web of fibres into continuous slivers or slubbings.