IMPROVEMENTS IN HEATING THE FEED WATER OF STEAM BOILERS AND IN APPARATUS EMPLOYED THEREFOR.
Year: 1873

page_text: LETTERS PATENT to William Sambrook, of Liverpool, in the County
of Lancaster, for the Invention of "IMPROVEMENTS IN HEATING THE
FEED WATER OF STEAM BOILERS AND IN APPARATUS EMPLOYED THEREFOR.'
"
Sealed the 29th July 1873, and dated the 18th February 1873.
PROVISIONAL SPECIFICATION left by the said William Sambrook at the
Office of the Commissioners of Patents, with his Petition, on the
18th February 1873.
I, WILLIAM SAMBROOK, of Liverpool, in the County of Lancaster, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
HEATING THE FEED WATER OF STEAM BOILERS AND IN APPARATUS EMPLOYED
THEREFOR," to be as follows:-
This Invention relates to improvements in heating the feed water of
steam boilers by the direct application of a steam jet or jets from the
boiler to the feed. The steam may be introduced into a chamber
containing a rose or perforated pipe which discharges a spray or shower
of water from the feed pump. The steam acts upon the spray or shower
and heats it or increases its temperature, the water heated by the steam
continuing its course to the boiler.

page_text: To carry this Invention into practice I make use of a suitable cylinder
or chamber, which encircles the ordinary feed pipe which enters at one
end and terminates in the cylinder or chamber in a rose or length of
perforated pipe. The feed pipe is continued from the other end of the
cylinder or chamber. The cylinder or chamber is fitted with a steam
pipe and suitable steam cock, which is situated near the end at which the
feed pipe enters. The cylinder or case is fitted with an internal flange
or web, which encircles the rose or perforated feed pipe. This flange or
web is perforated with holes so as to direct the steam along the cylinder
and across the spray or shower of water from the rose or perforated pipe.
The steam thus entering condenses, and at the same time heats the feed
water and is carried with the feed water into the boiler. The cylinder
or case may be fitted with an escape valve weighted rather over the
pressure in the boiler. The feed pipe from the pumps should be fitted
with a non-return valve to prevent the heated feed coming back on the
pumps.
In applying this apparatus to steam boilers it is advisable that it
should be placed three or four feet above the level of the water in the
boiler, the feed pipe rising up to it from the pumps and descending
from it to the boiler.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Sambrook in the Great Seal Patent Office
on the 12th August 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
SAMBROOK, of Liverpool, in the County of Lancaster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of February, in the year
of our Lord One thousand eight hundred and seventy-three, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said William Sambrook, Her special licence, that
I, the said William Sambrook, my executors, administrators, and assigns,
or such others as I, the said William Sambrook, my executors, adminis-
strators, and assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, exercise, and vend,

page_text: "
within the United Kingdom of Great Britain and Ireland; the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN HEATING
THE FEED WATER OF STEAM BOILERS AND IN APPARATUS EMPLOYED THEREFOR,'
upon the condition (amongst others) that I, the said William Sambrook,
my exccutors or administrators, by an instrument in writing under my,
or their, or one of their hands and seals, should particularly describe
and ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Sambrook, do hereby declare
the nature of my said 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 relates to improvements in heating the feed water of
steam boilers by the direct application of a steam jet or jets from the
boiler to the feed. The steam may be introduced into a chamber
containing a rose or perforated pipe, which discharges a spray or shower
of water from the feed pump. The steam acts upon the spray or shower
and heats it or increases its temperature, the water heated by the steam
continuing its course to the boiler.
To carry this Invention into practice I make use of a suitable cylinder.
or chamber, which encircles the ordinary feed pipe which enters at one
end and terminates in the cylinder or chamber in a rose or length of.
perforated pipe. The feed pipe is continued from the other end of the
cylinder or chamber. The cylinder or chamber is fitted with a steam.
pipe and suitable steam cock, which is situated near the end at which
the feed pipe enters. The cylinder or case is fitted with an internal
flange or web, which encircles the rose or perforated feed pipe. This
flange or web is perforated with holes so as to direct the steam along the.
cylinder and across the spray or shower of water from the rose or
perforated pipe. The steam thus entering condenses, and at the same
time heats the feed water and is carried with the feed water into the
boiler. The cylinder or case may be fitted with an escape valve weighted
rather over the pressure in the boiler. The feed pipe from the pumps
should be fitted with a non-return valve to prevent the heated feed
coming back on the pumps.

page_text: .
:
In applying this apparatus to steam boilers it is advisable that it
should be placed three or four feet above the level of the water in the
boiler; the feed pipe rising up to it from the pumps and descending
from it to the boiler.
The beforegoing being the nature, object, and purposes of this my 5
Invention, I will now proceed to describe more in detail how the same
may be carried into practical effect, and for that purpose I have hercunto
attached a Sheet of Drawings marked with figures and letters of
reference corresponding with those in the following explanation. Like
letters and figures denote similar parts throughout the various views.
Figure 1 is a sectional elevation of a feed water heater constructed
according to my Invention. Figure 2 is a sectional end view of
same.
1
Figure 3 is a sectional clevation of a modification of a feed water
heater constructed according to my Invention; Figure 4 is a plan of 1
same, and Figure 5 a section taken through the line A, B, Figure 3.
Upon reference it will be seen that a is a cast-metal chamber or vessel
divided into two parts a¹ and a² by the perforated diaphragm b. c is a
perforated feed water pipe; d, a non-return valve; e, the feed water pipe
from a pump; f, a feed water or supply pipe to the boiler; is a steam 2
cock, and a steam pipe leading from the boiler.
The functions of my improved feed water heater are:- -The feed water
is forced by the feed pump through the pipe e and non-return valve d
and pipe c, and enters the chamber a² in a spray through the perforations
in the pipe c. Steam is taken from the steam chest of the boiler by 2
the pipe k, and is admitted through the cock into the chamber a¹,
from whence it issues in jets through the perforated diaphragm 6 and
comingles with the water spray from the perforated pipe c in the
chamber a². The feed water through the pipe c thus absorbs the heat
of the steam passing through the perforated diaphragm b, and then 3
passes as a heated feed to the boiler through the pipe f.
In practice it is advisable that the feed water heater should be placed
three or four feet above the level of the water in the boiler, the feed pipe
e rising up to it from the pumps and descending from it to the boiler
(see pipe f).
Having now fully described and ascertained the nature, object, and
purposes of this my Invention, and how the same may be carried out
3

page_text: into practical effect, I wish it to be clearly understood that I do not
confine myself to the precise details or dimensions of the feed water
heater, as shown in the Drawings, as the same may be considerably
varied without departing from my Invention, but what I claim as the
Invention secured to me by Letters Patent as aforesaid is,―
Firstly. Heating the feed water of steam boilers by the direct
application of a steam spray or jet taken from the boiler, substantially
in the manner and for the purposes specified.
Secondly. A feed water heater consisting of the vessel a divided into
two compartments a¹ and a³ by the perforated diaphragm b, and having
a perforated water feed pipe c in connexion with non-return valve d, and
feed water pipe e, and boiler supply pipe ƒ, and steam cock h, and
steam pipe k, all in combination, forming a feed water heater, substantially
as set forth.
In witness whereof, I, dhe said William Sambrook, have hereunto
set my hand and seal, this Eleventh day of August, in the year of
our Lord One thousand eight hundred and seventy-three.
0
WILLIAM (L.S.) SAMBROOK.
Witness,
FREDERICK JOHN CHEESBROUGH,
of 15, Water Street,
Liverpool.