SOOT IN THE FLUES

By Anna Mae
Published on September 1, 2002
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Downing Photo #1: A Stirling boiler in transit somewhere in South Africa in the early 1900s,
Downing Photo #1: A Stirling boiler in transit somewhere in South Africa in the early 1900s,
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Photos #1
Photos #1
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Turnage Photo #1: J.A. Nachtrab's 10 HP Russell, number 192, photographed on the Nachtrab farm in Ohio in 1902.
Turnage Photo #1: J.A. Nachtrab's 10 HP Russell, number 192, photographed on the Nachtrab farm in Ohio in 1902.
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Traction Engines and Threshing Machines

This must have been about 1932. Because of a poor crop in our
section we decided at a rather late date not to pull our rig out
this fall. So I started out to try to find an engine job for the
fall. It was so nearly time to start threshing that I thought I
might have to take some other job. But I was lucky, I found a man
in the northern part of the state (North Dakota) that was about
ready to start threshing and did not have an engineer yet. I was
rather young looking at the time, and I imagine he would rather
have had a man that he knew more about. He seemed mostly concerned
about if I would be able to get the engine in line and into the
belt without losing too much time. He also made a point of
mentioning that the pillow block next to the crank disc was touchy,
but that it was correctly adjusted and I was to leave it alone.

The engine was a 35 HP Advance tandem-compound. We were to
thresh in a day or two so I steamed up a day ahead of time, after
washing out. When we started threshing 1 had no trouble getting
belted up. I had brought my own steam gauge along and had it on the
engine along with his and I noticed that mine showed about 20 to 25
pounds pressure more than the one on the engine. I let the pressure
run up to about 185 or more and the pop valve showed no sign of
opening. When I pulled the level it closed again right away, so I
set it open at 175 by my gauge. I had my gauge tested each year.
The engine was running anything but good, and sounded as if the
valves were way off, steamed hard. In fact, we stopped for steam
several times. It ran anything but satisfactorily.

This went on for two or three days. When a rain stopped
threshing for several days, I knew I would have to find out what
was wrong with the engine. The owner wanted me to set the pressure
back to agree with his gauge. When I told him I would have to have
the gauges tested before doing that he did not like it very well.
But he took the gauges to a power plant about 30 miles away and
found that mine was correct within a couple of pounds and his was
way off. Meanwhile, I had checked the valve setting, and found the
high- and low-pressure valves did not open exactly together.

While the fireman was bringing up pressure to start threshing
again, I set to looking at the engine and knew I had not really
found the trouble yet. It came to my mind that I should investigate
the stuffing box between the two cylinders. Well, I found that
there was hardly any packing left in the stuffing box. It had not
leaked at all to the outside, but the steam had been passing
through from one cylinder to the other. When we started to thresh,
the engine had the nice even muffled chug of the compound, and kept
steam easily. The piston rod must have had a corroded spot that
made it hard to keep packing on it, so after that at the end of the
day’s work I would blow out all the old packing and repack the
box in the morning.

I did not tell the boss what the trouble had been, so he thought
my setting the valves had done the trick. I should have, of course,
located the trouble right away, but it just had not occurred to me.
I guess the fact that there was no leak to the outside was what led
me astray. I had seen pictures of this stuffing box arrangement in
an Advance catalog, and knew just how it was made, but I was just
too dense to tumble to the trouble. I put in two more seasons on
this engine. Farming was done on a larger scale up there and the
small rigs did not get started as soon as at home.

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