PREVENTING CORROSION OF METAL TUBES
Year: 1884

page_text: We ERIC HUGO WALDENSTRÖM and WILLIAM SUMNER, both of Manchester, in
the County of Lancaster, Engineers, do hereby declare the nature of our invention
for PREVENTING CORROSION OF METAL TUBES to be as follows:-
This invention has for its object the prevention of Corrosion in Metal Tubes
used for Surface condensers of Steam-engines.
It is well known that Tubes in the Surface-condensers of Marine Steam engines
suffer from the corrosivo action of the cooling liquid passing through or outsido
the Tubes.
To prevent this we apply a protecting Metal which is electro-positive in the
cooling liquid in relation to the metal composing the Tube.
As will readily be understood, the corrosive action of the liquid will be con-
centrated on the protecting metal which, until it is itself consumed, will protect the
Tube from corrosion.
We carry out our invention in the following manner. Where the cooling liquid
passes through the interior of the tube we insert a rod or wire of protecting metal
of a suitable section in each tube of the condenser, and connect or secure the rod
or wire to the tube by bending it over the ends of the tube, by soldering or in any
suitable manner. Or the protecting metal may be applied to the tubo by melting
or otherwise depositing a strip of metal in its interior.-In cases where the cooling
liquid passes outside the tube, we apply the protecting metal to the outside of
the tube in the form of a spiral or in hoops or any other convenient manner.
Our invention is not confined to Surface condensers of Marine-engines only, but
is applicable to all apparatus where cooling or beating is effected by passing liquid
through or outside Metal tubes.
1.
Gofuh 1001

page_text: We ERIC HUGO WALDENSTRÖM and WILLIAM SUMNER, both of Manchester, in
the County of Lancaster, Engineers do hereby declare the nature of our invention
for PREVENTING CORROSION OF METAL TUBES, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement :—
This invention has for its object the prevention of Corrosion in Metal Tubes
used for Surface-condensers of Steam engines.
It is well known that Tubes in the Surface-condensers of Marine Steam engines
suffer from the corrosive action of the cooling liquid passing through or outside
the Tubes.
To prevent this we apply a protecting Metal which is electro-positive in the
cooling liquid in relation to the metal composing the Tube.
As will be readily understood, the corrosive action of the liquid will be con-
centrated on the protecting Metal which, until it is itself consumed, will protect
the Tube from corrosion.
We carry out our invention in the following manner.
Where the cooling liquid
passes through the interior of the Tube we insert a rod or wire of protecting metal
of a suitable section in each tube of the condenser, and connect or secure the rod
or wire to the Tube by bending it over the ends of the Tube, by soldering, or in
any suitable manner. Or the protecting metal may be applied to the Tube by
melting or otherwise depositing a strip of metal in its interior.-In cases where
the cooling liquid passes outside the Tube, we apply the protecting metal to the
outside of the Tube in the form of a spiral or in hoops or any other convenient
'manner.
Our invention is not confined to surface condensers of Marine-engines only, put
is applicable to all apparatus where cooling or heating is effected by passing liquid
through or outside Metal Tubes.
Having thus stated the nature of our Invention and described the manner of
performing the same, we wish it to be understood, that we do not limit ourselves
to the exact details given, as they may be varied or modified, but we claim :
The application of a Protecting Metal which is electro-positive in the cooling
liquid in relation to the metal composing the Tube for the purpose and substantually
in the manner described.
Dated this fifteenth day of December 1884.