The majority of the power to work crushers, hauling, etc: was via very
large waterwheels. In the early days of the mine they were of wooden
construction but in the latter years small iron-framed ones were used.
The waterwheels were usually connected up to a system of cast-iron rods known as "flatrods" which, being connected by crank to the wheel, imparted a forward/reverse motion to the flatrods, thereby providing considerable power a great distance from the source - the waterwheel!
Some flatrods were almost a 1/4 mile from the wheel, passing across fields etc: supported at intervals by piers or pillars with pulley wheels at the top.
The waterwheel, when set up close to the shaft or head was easily
converted to an up/down motion and allowed massive pumps to raise the
water from deep underground at least to adit levels.
Old methods of draining the water from bottom levels was by "rag & rope"
whereby rags attached to ropes were dropped into the water, raised and
squeezed between rollers and dropped down again.
Obviously the advent of steam power and water power greatly increased the
efficiency of the process and consequently deeper levels could be reached.
At Wheal Friendship the water was creating a considerable problem and it was decided to build a large diameter wheel underground. This was known as Buller's Wheel and was some 6ft in breast (width) and 53ft in diameter!
This meant that enormous horsepower was available and it used water that was coming in from above! It was killing two birds with one stone.
Another large wheel was introduced and had similar results. Bullers Wheel emptied into the Cholwell Brook, close to the parish church. The other emptied into the river Burn, close to the site of the railway station.
Reliance on water as a sole means of power production was not possible as
during severe frosts the leats froze and the wheels were unable to work.
During these times, of course, the underground streams still gushed forth.
It could take a considerable time for the pumps to catch up once the frost
had gone and the wheels could be set to work again. No work meant less
pay and possible disaster for families absolutely depenent on the
continuity of work.See Tut or Tribute?
This inability to cope during bad weather resulted in the installation of a steam engine of some 81" condenser size. This was installed over "Steam Engine Shaft" of course!
Visit the famous Levant mine and other historic mining sites.
I have stayed in the small Trewellard Arms for B&B and found it a wonderful experience.
Give it a try yourself.
The telephone number is 01736-788634 and the proprietors are Christine and
Martin Barnett. Expect to hear a genuine Cornish accent if you do phone!
Delightful people.
Currently (1996) B&B is around £15ea. The breakfast is a genuine
English one - and lots of it! Don't expect to lose weight on this trip.