Improvements in Apparatus for Heating Water by Means of Steam.
Year: 1895

page_text: Date of Application, 13th Apr., 1895
Complete Specification Left, 11th Jan., 1896-Accepted, 15th Feb., 1896
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Heating Water by Means
of Steam.
I, JAMES PYLE, of 38, Elliot Street, in the County of Glasgow, North
Britain, Coppersmith, do hereby declare the nature of this invention to be as
follows, that is to say :-
My said invention has for its object to improve the construction and increase
the efficiency and quickness of action of apparatus for heating water by means of
steam.
In one modification of apparatus made according to my invention there is a
vertical cylindrical vessel made of copper, and formed with end flanges to which
are bolted a domed bottom and a domed top. The water to be heated enters by an
inlet in the centre of the bottom and passes through a perforated diaphragm which
distributes it over the cylinder area. The water passes on by an outlet at the
centre of the top. The steam euters by a lateral inlet near the top into an internal
connecting piece, from which several copper tubes extend downwards, there being
a central one of comparatively large diameter which is vertical, and is crossed at
various heights by short tubes through which water can pass. Other tubes are in
the form of helical coils, surrounding the central tube, and are contrived so that
they are all of about the same length or do not vary much from or exceed what is
found to be the best length for the pressure of steam to be employed. Thus the
innermost helical coil nearest the central tube may be a single coil with its con-
volutions near together; and the second coil may consist of two tubes arranged
like the threads of a two-threaded screw; whilst the third coil may cousist of three
tubes arranged like the threads of a three-threaded screw. For large sizes of
apparatus there may be more than three helical coils arranged in a similar manner.
The central tube and the helical tubes are at their lower ends all connected to
bottom connecting piece which communicates with a lateral outlet for water of
condensation. The several tubes are connected to the top and bottom connecting
pieces by screw couplings; and all the parts can be easily disconnected for cleaning
or for repairs or renewals.
Dated this Eleventh day of April 1895.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Heating Water by Means
of Steam.
I, JAMES PYLE, of 38, Elliot Street, in the County of Glasgow, North Britain,
Coppersmith, 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, that is to say :-
My said invention has for its object to improve the construction and increase
the efficiency and quickness of action of apparatus for heating water by means of
steam.

page_text: Apparatus as made according to my invention is shown on an accompanying sheet
of explanatory drawings, Figures, 1, and 2, thereof being horizontal section.
respectively at different points, and Figure, 3, a vertical section.
In these drawings the same reference letters are used to mark the same or like
parts wherever they are repeated.
In the apparatus shown in the drawings there is a vertical cylindrical vessel, A,
made of copper or other suitable metal and formed with end flanges, B, and C, to
which are bolted a domed bottom, D, and a domed top, E. The flanges, B, are
strengthened by rings, F. The water to be heated enters by an inlet, G, in the
centre of the bottom, D, and passes through a perforated diaphragm, H, which
distributes it over the cylinder area. The water passes on by an outlet, J, at the
centre of the top, E. When a large inlet and a large outlet are required, they
may be formed as indicated by dotted lines, W. The steam enters by diametrically
opposite lateral inlets, K, near the top into an internal connecting piece, L, from
which several copper tubes, M, N, P, and Q, extend downwards, there being a
central one, R, of comparatively large diameter which is vertical, and is crossed at
various heights by short tubes, S, through which water can pass. The other
tubes, M, N, P, and Q, are in the form of helical coils, surrounding the central
tube, R, and are contrived so that they are all of about the same length, or do not
vary much from or exceed what is found to be the best length for the pressure of
steam to be employed. Thus the innermost helical coil or tube, Q, nearest the central
tube, R, is a single coil with its convolutions near together; and the second coil, P,
is a similar single coil; whilst the third coil consists of two tubes, M, and N,
arranged like the threads of a two-threaded screw. The second coil, P, however
may consist of tubes arranged like the threads of a two-threaded screw, and the
third coil may consist of three tubes arranged like the threads of a three-threaded
screw. For large sizes of apparatus there may be more than three helical coils
arranged in a similar manner. The central tube, R, and the helical tubes, M, N, P,
and Q, are at their lower ends all connected to a bottom connecting piece, T, which
communicates with lateral outlets, U, for water of condensation. The several
tubes, M, N, P, and Q, are connected to the top and bottom connecting pieces, L,
and, T, by screw couplings, V, which are in section of smaller internal area than
the tubes to which they are attached, the object of the small couplings being to
control the passage of the steam, while a large heating surface is provided in the
tubes. All the parts of the apparatus can be easily disconnected for cleaning or
for repairs or renewals.
The upper and lower connecting pieces, L, and T, being diametrical and fixed
at their opposite ends to the sides of the vessel form rigid and secure supports
for the tubes.
Apparatus of the kind hereiubefore described may with suitable modification be
advantageously employed to heat boiler feed water by means of steam.
Instead of the steam being inside of the tubes as herein before described (which
arrangement I prefer) the water may be inside of the tubes and the steam outside
of them.
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
The improved combination and arrangement of parts constituting the apparatus
for heating water by means of steam substantially as hereinbefore described and as
shown in the accompanying drawings.
Dated this Tanth day of La 1906
EDMUND HUNT,
Applicant's Agent.