Evening times-Republican. [volume] (Marshalltown, Iowa) 1890-1923, 1905-08-26
Gilman Men Highly Pleased
With Model of Rotary
Steam Engine
MANY ADVANTAGES CLAIMED
Invention of 7. c. RoseIand May Prove
of Such Value That Steam Power
Will be Revolutionized-P.J J. Jacob.
SON Interested in the Enterprise =
City News.

A rotary steam engine, which, III "
proves feasible and Is adopted by some
Of the large eastern manufacturing
concerns. will make for the owners Of
the patent fortune. Two Gilman men,
T. c. Roseland and p. j. jacobson, are
interested In the enterprise, the former
as the inventor and perfector, and the
latter in financing the venture. If the
engine will do what the promoters feel
that it will, upon a thorough Test, i.
will revolutionize the power Of steam.
A model Of the engine has been built
at the foundry of the A. E. Shorthill
Company, in this city, AMI is now
awaiting a trip east, where it will be
shown manufacturers, with the hope
that it will be adopted. manufactured
and placed on the market. The model
only weighs sixty pounds, aud yet, with
its smallness, has a capacity estimated
at ten horse power. No absolute test,
however, of the horse power, has as yet
been made.
The new rotary that has been
perfected by Mr.. Roseland will never
stop on dead center, no matter where
the drive wheel happens to stop when
the steam is shut off. BY turning on
the steam there is no awaiting a CEN
ter. as the engine starts up with per-
feet ease BY reversing it runs just
as fast as it does IN going ahead. The
expansion of steam IS utilized just as
we'll on the new machine. as on any cyl
inder engine, something never before
known in rotary engines. Friction
is done away with entirely, and for
that reason the operator gets more
value out Of his steam. The doing away
with the friction also saves the life OF
the machine. and ol.ce thoroughly made
tight the engine VIII never leak steam.
The little mo i"l that has been per-
fected runs 1000 revolutions to the
minute, SO fast that it is Impossible
to see the drive wheel move. The en-
CINE can be placed into service on any,
thing that can be operated by steam.
including railway locomotives, steam
ships, steamboats,. etc. It also will fur
,nish unlimited power for driving ell
same principal is carried out in the
building Of an engine one horse power
in size, or 1000 horse power. The en-
CINE is fully covered by patents, grant
ed Messrs. Roseland and jacobson on
May 16.
Mr.. Roseland, the inventor of the
engine, is young Norwegian machin-:
list, who learned his trade in his ma
tive country. He has been experiment.
ing five years in building rotary en-
gines, and in that time has built five
engines. Not until this one was per-
fected, however, were his ideals realiz
ed, the principal difficulty being the
successful utilizing OF the expansion.
to the engine, the same as on any
steam engine, altho the model has, as
yet, not been equipped with a governor
It is left off for the purpose Of showing
the revolutions that the engine is cap
able Of making. Gasoline can be util-
ized by q separate attachment, SO that
smaller sizes of the engines may be
used to advantage on small sailing
craft, such as naptha launches.
Mr.. jacobson and Mr.. Roseland ex-
pect to leave soon for some Of the
large eastern cities to give their ma
chine a thorough test They have al
ready had several offers made them for
the patent, but they are not seeking Its
direct sale. 1t is likely the engine will
be tested in one of the American Lo-
connective Works shops, where heavy
work in steam power Is required, and
where the engine could be tested on
locomotives.