Improvements in and applicable to Steam Engines.
Year: 1891

page_text: Date of Application, 9th July, 1891'
Complete Specification Left, 11th Apr., 1892-Accepted, 14th May, 1892
PROVISIONAL SPECIFICATION.
Improvements in and applicable to Steam Engines.
I OTTO ERNEST POHL of Custom House Arcade Liverpool in the County of
Lancaster, Salt Manufacturer do hereby declare the nature of this invention to be
as follows:
Hitherto it has been proposed to introduce hot substances into the jacket spaces
of steam cylinders in order to counteract cooling of the steam in the cylinders; the
outcome has been that the jacket spaces are mostly left filled with air.
My present invention consists in accumulating that portion of the heat of the
cylinder steam which is now lost by radiation and convection through the means of
certain substances filled into the jacket, which substances will soon become hotter
than the steam on leaving the cylinder, in this way forming a take up and give out
heat to the steam, the given out heat towards the end of the stroke largely preventing
condensation.
Cylinder and pipe jackets and especially where steam is used over and over again
should be connected to ensure maximum results..
The substances I use for the purpose are glycerine of a specific gravity of about
1260 Beaume mixed by gentle heating with caustio potash of the greatest
possible strength and chemical purity from about to weight of the whole
mixture.
.
Air is to be excluded as well during the preparation of the mixture as during the
use of the same in the jacket.
If desirable a safety valve may be used. The essential peculiarity of the
mixture for this purpose consists in giving off no vapour or hardly any and being a
tolerably good conductor of heat.
Dated the 7th day of July 1891.
Per pro J. T. KING,
J. Johnson.
Agent.
COMPLETE SPECIFICATION.
Improvements in and applicable to Steam Engines.
I OTTO ERNEST POHL of Custom House Arcade, Liverpool, in the County of
Lancaster, Salt Manufacturer do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
Hitherto it has been proposed to introduce hot substances into the jacket spaces
of steam cylinders in order to counteract cooling of the steam in the cylinders; the
outcome has been that the jacket spaces are mostly left filled with air.
My present invention consists in accumulating that portion of the beat of the
cylinder steam which is now lost by radiation and convection through the mcans of
certain substances filled into the jacket, which substances will soon become hotter
than the steam on leaving the cylinder in this way forming a take-up and give-
out heat to the steam, the given out heat towards the end of the stroke largely
preventing condensation.
Cylinder and pipe jackets and especially where steam is used over and over again
should be connected to ensure maximum results.
The substances I use for the purpose are glycerine of a specific gravity of about
1260 Beaume mixed by gentle heating with caustic potash of the greatest

page_text: possible strength and chemical purity from about to weight of the whole
mixture.
Air is to be excluded as well during the preparation of the mixture as during the
use of the same in the jacket. If desirable a safety valve may be used. The
essential peculiarity of the mixture for this purpose consists in giving off no vapour
or hardly any, and being a tolerably good conductor of heat.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim.is:-
Jacketing steam engines with substances prepared and applied substantially as
Dated the 9th day of April 1892.
Per pro J. T. KING,
J. Johnson,
Agent.
Per pro J. T. KING,
J. Johnson,
Agent.