1862 London Exhibition: Catalogue: Class VIII.: Bryan Donkin and Co
1840. DONKIN, B., and Co, near Grange Road, Bermondsey.
Turbine water wheel, and gas valve. Drilling apparatus for mains.
TURBINE WATER WHEEL, suitable for a high fall of water.
a. Revolving ring with buckets in a single casting.
b. Shaft communicating with regulating valve tackle.
c. Vertical shaft, transmitting the power.
d. Bearing brass for supporting weight of revolving wheel, which bearing, being out of the water is readily accessible.
e. Pipe for bringing water to casing.
This wheel, with a 40 ft. fall of water, would give a power of 36 horses, or 33,000 lbs. lifted 1 ft. high per minute, and would make 150 revolutions per minute.
For falls under 15 or 16 ft. the casing f is unnecessary; the turbine being placed in a brick or wooden pit.
The advantages of the turbine are:-
A high speed, rendering the gearing comparatively simple and inexpensive.
Freedom from the inconvenience arising from floods, as the wheel will work immersed many feet under water.
An economy with regard to the useful effect, as compared with an ordinary water wheel, on any given fall.
IMPROVED VALVE FOR GAS MAINS, SO constructed that there are no external working parts; the one exhibited is for a main of 30 in. bore.
This invention is calculated to prevent accidents, by furnishing the means of drilling holes in gas mains when laying service pipes, as the hole is both drilled and tapped, without allowing an escape of gas.