The Blake’s Hydram installed at Burton Mill would have been used to pump spring water to properties further up the nearby hill. Its age is not known but Blake’s began producing this type of pump in the 1860s. They are still in production today!
A Hydraulic Ram Pump converts a large low-pressure volume of water to a small high-pressure volume. Our pump is unusual in that it incorporates a piston to separate the pond water power source from the pumped spring water (‘B Type’ in this advertisement).
The pump before restoration. An iron-rich sludge had built up around the pump.
It is fitted in a closed underground chamber with the now blocked water outlet pipe passing under the tail race to an unknown location. A permanently damp atmosphere encouraged corrosion.
A new outlet pipe will be added through to the tail race and exiting sufficiently far downstream to prevent back-filling with water from the turbine.
Restoration work began in April 2020 with the pump being lifted from the underground chamber.
The first challenge was to remove the seized piston. An extreme amount of force finally shifted it.
Pump fully dismantled. Only one bolt had to be drilled out and a couple of pipe connections required cutting away but all other parts are reusable. The cast iron casings will be blast cleaned and painted.
Water to power the ram pump comes from the mill pond via this (seized) gate valve. The water then passes through two settling tanks to remove any large objects which would otherwise block the pump.
The 90 degree bend had been removed many years ago and left in the mill. Oddly, it doesn’t actually fit so how it connected is a mystery.