J. Campbell Evans
J. Campbell Evans of Morden Iron Works at Greenwich
1859 Produced small steam cranes, described in a Paper by J C Evans[1]. The cranes had a single oscillating cylinder, and drive to the hoist drum was via grooved friction wheels. A hand lever was pushed down to engage the pair of friction wheels, and raised to disengage the wheels and then press the driven wheel against a brake block.
1863 Tendered for three locomotives for the Ffestiniog Railway but probably not successful [2]