COLE - James Ferguson, London.
One of the finest makers of watches, clocks and chronometers.
Patented a detached escapement in 1821.
Invented in 1830 a 'resilient' lever escapement in which the pallets bank on the escapement-wheel-teeth,
in 1840 a 'double rotary' escapement
and in 1859 a lever escapement with negative draw.