Improvements in Tubular Feed Water Heaters.
Year: 1892

page_text: Date of Application, 30th Nov., 1892
Complete Specification Left, 29th Aug., 1893-Accepted, 30th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Tubular Feed Water Heaters.
I, WILLIAM HENRY SANKEY, of Morley in the County of Derby, Mining
Engineer, do hereby declare the nature of this invention to be as follows:-
The object of my invention is to construct tubular feed water heaters in such a
manner that all of the tubes can quickly be got at and cleaned as often as may be
desired.
I construct a feed water heater in the following manner :-
The tubes are ranged in two or it might be more parallel rows and their ends are
held in two tube plates which are themselves held together at the required distance
apart by through bolts and distance pieces. Recesses are planed in the outer face
of each plate. In a water heater with two parallel rows of tubes one plate has a
recéss going around it near its edge and cross recesses at right angles to the
parallel rows going between the tubes-the other plate has a recess going around
it near its edge and a recess going between and parallel with the two rows and
other cross recesses passing from this central recess to the two sides first to one
side between two tubes of one row then to the other side between two tubes of the
other row and so on at a distance apart corresponding to the distance apart of the
tubes in the rows.
In front of the face of each tube plate is held a cover plate with projections
upon it corresponding to the recesses in the tube plate that it is to be held against.
The projections are considerably deeper than the recesses so that a space is left
between each tube plate and the cover plate in front of it. At one end the space
will be divided by the projections in such a way that each division has the ends of
one tube of each row entering into it whilst at the opposite end each division has
(except for the inlet from the pump and the outlet to the boilers) two tubes of the
same row entering into it.
A packing of india rubber or other suitable material is placed in the recesses
and the covers being placed in position and the nuts on the bolts connecting them
with the tube plates being screwed up watertight divisions are formed.
In this way water supplied to a tube at one end of one row will pass to a tube
of the next row then back through a tube of this same latter row and so on until
it has been passed through all the tubes and passes away to the boilers by an outlet
conducting tube.
In feed water heaters containing three or more rows of parallel tubes, the
arrangement of the recesses in the tube plates and the projections on the covers is
modified the same general principle being followed.
The water heater is adapted for use in the main flue of a boiler or boilers in a
channel used to convey exhaust steam to a condenser and in a suitable outer casing
by the exhaust steam from high pressure or non-condensing engines.
T
1000
W. H. SANKEY:
COMPLETE SPECIFICATION.
Improvements in Tubular Feed Water Heaters.
I, WILLIAM HENRY SANKEY, of Morley in the County of Derby, Mining
Engineer, 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 :--
The object of my invention is to construct tubular feed water heaters in such

page_text: a manner that the water has to pass through all of the tubes in succession whilst
at the same time all the tubes can quickly be got at and cleaned as often as may be
desired.
I construct a feed water heater in the following manner :-
The tubes are ranged in two, or it might be more, parallel rows, and their ends
are held in two tube plates which are themselves held together at the required
distance apart by through bolts and distance pieces. Recesses are planed in the
outer face of each plate. In a water heater with two parallel rows of tubes, one
plate has a recess going around it near its edge and cross recesses at right angles
to the parallel rows going between the tubes, the other plate has a recess going
around it, near its edge, and a recess going between and parallel with the two rows,
and other cross recesses passing from this central recess to the two sides, first to
one side between two tubes of one row, then to the other side between two tubes
of the other row, and so on at a distance apart corresponding to the distance apart
of the tubes in the rows.
In front of the face of each tube plate is held a cover plate with projections
upon it corresponding to the recesses in the tube plate, that it is to be held against.
The projections are considerably deeper than the recesses, so that a space is left
between each tube plate and the cover plate in front of it. At one end the space
will be divided by the projections in such a way that each division has the ends of
one tube of each row entering into it whilst at the opposite end each division has
(except for the inlet from the pump and the outlet to the boilers) two tubes of the
same row entering into it.
A packing of india rubber or other suitable material is placed in the recesses and
the covers being placed in position, and the nuts on the bolts connecting them with
the tube plates being screwed up watertight divisions are formed.
In this way water supplied to a tube at one end. of one row, will pass to a tube.
of the next row, then back through a tube of this same latter row, and so on until
it has been passed through all the tubes and passes away to the boilers by an outlet
conducting tube.
In feed water heaters containing three or more rows of parallel tubes, the
arrangement of the recesses in the tube plates, and the projections on the covers is
modified, the same general principle being followed.
The water heater is adapted for use in the main flue of a boiler or boilers, in a
channel used to convey exhaust steam to a condenser, and when enclosed in a
suitable outer casing it may be used for heating feed water by means of the
exhaust steam from high pressure or non-condensing engines.
In order that my said invention may be fully understood and readily carried into
effect, I will proceed to describe the drawings annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a vertical and longitudinal section with parts removed, of a feed water
heater in accordance with my invention.
Figure 2 is an elevation of the tube plate and Figure 3 is an elevation of the
cover plate at one end of the apparatus.
Figures 4 and 5 are similar views showing respectively the tube plate, and the
cover plate at the other end of the apparatus.
The section shewn by Figure 1 is taken partly on the line D E, and partly on
the line E F of the other figures.
a a are the tubes, they may be of any convenient length. b and c are the two
tube plates in which the ends of the tubes are set, and d and e are the two cover
plates. The tube plates have plane surfaces formed upon them at 6' and c¹ to make
joint with corresponding ribs cast with the cover plates. d and e' are the ribs on
the cover plates and the summits of these ribs are planed in order that secure
joints may be made.
In the cover plate shown by Figure 5 there is an inlet opening at e³, and an
outlet at where suitable circulating pipes are connected.

page_text: ff are bolts clamping the tube plate and the cover plate together around their
edges. 99 are long through bolts; they have distance collars upon them at gl gi
to maintain the proper distance between the tube plates, and at their ends they
receive nuts gg. The bolts g g are square at the part within the tube plate, and
the hole in the tube plate is of corresponding form.
I would remark that it is a feature in the heater that the water passes through
the tubes which it contains in single series, thus many passages to and fro are
ensured and the water is detained in the heater sufficiently long for a large rise, in:
temperature to be obtained.
This heater is readily cleaned when the cover plates are removed.
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 :-
1. A feed water heater, substantially as described, consisting of tubes having
their ends set in tube plates, and cover plates outside the tube plates, with ribs.
partitioning off passages between the plates, such passages connecting the tubes in
series as herein set forth.
2. The combination of parts consisting of the tubes, the tube plates, the ribbed
cover plates, and the bolts, connecting the cover plates and tube plates; the whole
constituting a feed water heater, substantially as described.
3. Feed water heaters substantially as described and illustrated by the annexed
drawings.
W, H. SANKEY!