This
method is very satisfactory to me from the fact that it gives us the
actual experience of a class of engineers who have all conditions with
which to contend, and especially the unfavorable conditions. I have
possibly written more letters in answer to such questions as: "Why my
Lubricator does this or that; and why it don't do so and so?" than of
any other one part of an engine, (as a Sight Feed Lubricator might in
this day be considered a part of an engine.) Of all the queries and
objections made of the many Lubricators, there are two showing the least
trouble to the operator. There are the Wm. Powell Sight Feed Lubricator
(class "A") especially adapted to traction and road engines owing to the
sight-glass being of large diameter, which prevents the drop touching
the side of glass, while the engine is making steep grades and rough
uneven roads, made by The Wm. Powell Co., Cincinnati, O., and for sale
by any good jobbing house, and the Detroit Lubricator made by the
Detroit Lubricator Co., of Detroit, Mich. I have never received a
legitimate objection to either of these two Lubricators, but I received
the same query concerning both, and this objection, if it may be called
such, is so clearly no fault of the construction or principle of the
Lubricator that I have concluded that they are among if not actually the
best sight feed Lubricator on the market to-day.
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