IMPROVEMENTS IN STEAM WATER HEATERS
Year: 1872

page_text: PROVISIONAL SPECIFICATION left by William Armand Gilbee at the
Office of the Commissioners of Patents, with his Petition, on the
5th January 1872.-A communication from abroad by James
Argall, of Mineral Point, in the County of Iowa and State of
Wisconsin, United States of America.
I, WILLIAM ARMAND GILBEE, of the Firm of L. de Fontainemoreau
& Co., Patent Agents, 4, South Street, Finsbury, in the County of
Middlesex, do hereby declare the nature of the said Invention for
“IMPROVEMENTS IN STEAM WATER HEATERS," to be as follows, that is to
say:
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The Invention communicated to me consists in an improved steam
water heater constructed of concentric cylinders forming alternate
cylindrical steam and water chambers, the steam chambers being
connected to a steam box at each end. An attempcrator connected
therewith is also employed, consisting of a cylindrical steam chamber
constructed as herein-after described.
The steam water heater consists of an outer shell or cylinder made
either of boiler iron, cast iron, or other suitable metal. Each end of

page_text: this cylinder is inserted in and encompassed by a flange on a cylindrical
steam box. When made of cast iron the cylinder and ends are cast
in one piece. Inside this cylinder is a second cylinder of the same
length as the first cylinder, but about two inches less in diameter and
constructed of the same material. This second cylinder is secured to
the steam box and to the outer cylinder at each end by a suitable
angular ring and rivets; the two cylinders are thus joined at their
ends, and the space between them forms the outer water chamber.
Two more concentric cylinders are employed of the same length as the
preceding ones, but about four inches and six inches respectively less in
diameter than the outer or first cylinder; they are joined at their ends
by rings of a T shape on the under side, to the shoulders of which
the cylinders are secured by rivets, or these cylinders may be conjoined
and secured in the same manner as the first and second cylinders;
the said rings are provided with cam-like projections which serve to
keep the cylinders separate and equidistant. The central cylinder
consists of a single cylinder sunk in and rivetted to suitable stay rings.
The front end of the cylinder is covered with a circular cap and the rear
end is open.
Other cylindrical chambers constructed as herein-before described can
be employed in lieu of the central cylinder if thought necessary.
The several cylinders sliding the one in the other in a telescopic
manner are secured in position at each end by a spider or + piece
and a central bolt which extends throughout the length of the cylinders
and the spiders, and is secured by a nut at each end; rivetting is also
employed. .
By this mode of construction four cylindrical chambers are obtained
forming alternate water and steam chambers; the two steam chambers
are open to the steam box at the front end, but only the outer steam
chamber is open to the exhaust steam box, the inner one being covered
with a cap with small apertures communicating with the exhaust steam
box. Into the front steam box opens a receiving pipe attached to the
exhaust steam pipe of the engine, and through the cover of the said
box passes a water pipe which opens into the inner water chamber;
this water pipe is connected with the pump. The exhaust steam box
is furnished with a stop-cock for the escape of condensed water, and at
the side with a steam escape pipe. The two water chambers are
connected by a return pipe in the exhaust steam box. A circular

page_text: reservoir or deposit box is rivetted to the lower end of the outer
cylinder, the mouth of which deposit box is covered by a circular
plate with a stop-cock in the centre; a pipe is attached to the upper
front end of the outer cylinder and leads into the boiler, thus
connecting the water chamber of the heater therewith. Suitable
packing is employed wherever required to make the joints steam or
water tight.
The attemperator employed (and which is placed in the tank)
consists of two concentric cylinders joined at the ends and forming a
steam chamber. At its upper end and crossing it transversely is a
distributing pipe, in the centre of which is a receiving pipe which is
connected with the exhaust steam pipe of the heater; an escape pipe
which faces towards the inside is placed at the lower part, and a pipe
similar to the distributing pipe may also be placed at the lower part, if
found necessary.