A
narrow, thin strip, C, is fastened to the bottom of the tank to
keep the plates slightly raised, at the same time allowing a
clearer flow of the water from the bottom upwards to the
discharge.
The water enters the narrow partition at the end, flows under the
partitions B and A, then upward between and parallel to the
surface of the plates, escaping at the opposite end over the top
of the tank end, in which the upper part has been cut away for
that purpose. The depth of this cut, in the upper part of the tank
end, should allow the overflow to be a trifle higher than the
width of the largest size plate for which the tank is fitted.
Partition B being stationary, can be nailed in position
permanently, allowing the bottom edge to clear the bottom of the
tank the desired distance. Partition A being movable should have
attached to its bottom edge a couple of nails, D, or better still,
wooden pegs, which will keep it also above the bottom of the tank
at the desired height.
A coat of paraffin paint should be applied, and, just before it
sets perfectly hard, any rough spots trimmed down with a knife or
chisel and a second lighter coat applied.
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