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Wisconsin Dairymen's Association / Fortieth annual report of the Wisconsin Dairymen's Association : held at Beloit, Wis., November, 1911. Report of the proceedings, annual address of the president, and interesting essays and discussions relating to the dairy interests
(1912)

James, W. D.
Building the dairy barn,   pp. 64-81 PDF (3.4 MB)


Page 80


Fortieth Annual Report of the
and we have been instructed always to build those ventilators above the
roof, so that we are benefited by the current of air. You can enclose
that barn absolutely tight and there will be a draft going out of that
ventilator.  We have a barn similar to that on the state fair grounds
at Milwaukee, and I am going to confess something which I never
told to but one member of the State Board of Agriculture; there are
two of them here who don't know anything about it. I was curious;
I happened to be on the ground, as I am many times, alone, and saw
that barn was ventilated as this model barn is, and I was curious to
know how smoke would act in that barn. So I went into It and I
kindled three little fires with damp straw. I wanted to see in what
direction that smoke would go, and how long it would take it to disap-
pear. I stood watching it a long time, and the smoke gradually went
to the ceiling. It finally became affected by the intake current and
T saw the movement at the ceiling begin working. It gradually began
to penetrate different portions of the basement room and it flially be-
gan to work towards the outtake flue the faster it traveled, and it
finally went out with the-suction-I call it draft. I hold that smoke
was not forced out by the current of intake air. But it very gradually
penetrated all parts of the basement and stayed there until It all dis-
appeared in the outtake flue. Now, that smoke did not eddy around
and immediately travel to these intake flues as Professor Emery
suggested, but it was very gradual and very slow in moving over that
entire basement until it was taken out by the flue. That was an illus-
tration to me and an important one, because it proved what I have
always believed, that the King system of ventilation is a very practical
system. I was forced to believe it from what I saw. That smoke
traveled exactly the same as the air traveled in that barn and that
outtake ventilating flue should be built tight so as to ensure a good
draft. Of course the air that goes up the chimney is warm from the
stove and the warmer that flue is the greater will be the draft. You
all know if your chimney doesn't draw, it will smoke.
Mr. Everett: I want to read from the gospel of Professor King.
I quote from the 27th Annual Report of the Dairymen's Association:
"Q: There is one factor in a chimney that makes it a ventilating
shaft, that is the fire.
"Prof. King: That is true, and the heat from the bodies of the
cows in a measure acts in the same way; but you are all familiar
with the fact that on a windy day the air currents passing across
the top of a chimney tend always to produce a stronger draft, and
all good chimneys have a draft through them even when there is no
fire, and the same thing would be true of a properly constructed ven-
80.


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