Improved Method of and Apparatus for Preventing Corrosion in Steam Boilers.
Year: 1886

page_text: Date of Application, 22nd Nov., 1886.
Complete Left, 19th Aug., 1887.
Complete Accepted, 27th Sept., 1887.
Improved Method of and Apparatus for Preventing Corrosion in
Steam Boilers.
EDWARD MITCHELL BLEWITT FAULL Consulting Engineer, 30 Manley Terrace
Kennington Park, London, Surrey, and FREDERICK WILLIAM CANNON, Consulting
Engineer, 551 Manchester Road, Poplar London, Middlesex do hereby declare the
nature of this invention to be as follows:-
This invention has for its object improvements in the feeding of Marine and other
Boilers. For this purpose we employ a cast Iron Cylindrical or other shaped vessel
which may be made of other metals besides cast Iron. In the centre of the said
vessel we employ a Zinc plate placed between two perforated wrought Iron plates,
placed into a groove on each side of the vessel & extending from the inside of cover to
a water space distance of the bottom. In the bottom of the vessel are placed three
plates one of Zinc, two of Perforated Wrought Iron. The Zinc plate is placed
between the two wrought Iron plates in the same order as in the first named. The
feed water enters thro' an orifice near the top of main disintegrating plate and is
forced with great pressure to the water space at the bottom of the vessel; where it is
again brought in contact with the bottom disintegrating plate, during during which
progress the feed water perfectly cleared of all Galvanic action and enters the
Boiler in a harmless state. We claim the right of using this Disintegrater as
follows:-
Either inside the Boiler, outside the Boiler, or in the Hot-well, which will be by
preference outside the boiler.

page_text: Improved Method of and Apparatus for Preventing Corrosion in
Steam Boilers.
EDWARD MITCHELL BLEWETT FAULL Consulting Engineer 30 Manley Terrace
Kennington Park London County of Surrey and FREDERICK WILLIAM CANNON
Consulting Engineer of 551 Manchester Road Poplar, London, County of Middlesex
do hereby declare the nature of this invention 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 effective prevention of corrosion or galvanic
action taking place in Marine or other Boilers for this purpose we employ a cast iron
vessel, in the bottom of said vessel is placed a zinc plate with a perforated iron plate
resting on same.
In the centre of said vessel we place a zinc plate vertically between two perforated
iron plates in a groove provided for that purpose, the lower end of the three plates
being about one or two inches above the plates resting on bottom of vessel leaving an
aperture for water to pass. The top end of plates being made watertight by means
of jointing against the cover of said vessel, there are two connections near the top of
the vessel one being an inlet the other an outlet, the two being divided by the zinc
and iron plates so that any liquid on entering would have to pass down one side of
the partition formed by the three plates through the existing aperture at the bottom
passing up the opposite side of the partition and through the outlet. From the
centre zinc plate through a small gland in the side of the vessel we run a copper wire
and connect same on to any part of the Boiler internally or externally, from another
part of the boiler we carry a copper wire back to the vessel passing it through another
small gland in the side of vessel and connecting it to the wrought iron plates inside
the vessel thus forming a battery of sufficiently destructive power to destroy any
galvanism contained by the feed water.
our said
Having now particularly described and ascertained the nature of
invention and in what manner the same is to be performed we declare that what we
claim is
1. Prevention of pitting and corrosion in Marine and other Boilers.
2. The sole right to use the vessel and its attachments herein described either inside
the boiler or outside the boiler or in any part of the Engine room or Hot well.
3. Composed of any metal or metals.