IMPROVEMENTS IN HEATING AND SUPERHEATING THE FEED WATER OF STEAM BOILERS AND IN APPARATUS EMPLOYED THEREFOR, APPLICABLE ALSO FOR HEATING WATER USED FOR OTHER PURPOSES
Year: 1876

page_text: LETTERS PATENT to William Sambrook, of Liverpool, in the County of Lan-
caster, for the Invention of "IMPROVEMENTS IN HEATING AND SUPERHEATING
THE FEED WATER OF STEAM BOILERS AND IN APPARATUS EMPLOYED THEREFOR,
APPLICABLE ALSO FOR HEATING WATER USED FOR OTHER PURPOSES."
ealed the 20th April 1877, and dated the 25th October 1876.
PROVISIONAL SPECIFICATION left by the said William Sambrook at the
Office of the Commissioners of Patents on the 25th October 1876.
WILLIAM SAMBROOK, of Liverpool, in the County of Lancaster. “IMPROVEMENTS
IN HEATING AND SUPERHEATING THE FEED WATER OF STEAM BOILERS AND IN
APPARATUS EMPLOYED THEREFOR, APPLICABLE ALSO FOR HEATING WATER USED
FOR OTHER PURPOSES."
My Invention relates to certain improvements upon a former Invention, for
which I obtained Letters Patent bearing date the 18th day of February 1873, and
Numbered 596. This former Invention relates to certain 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 water. The apparatus described consists of a chamber or
vessel containing a rose or perforated pipe, which discharges into such vessel a spray
or shower of water from the feed pump. The steam from the boiler enters the
vessel and acts upon the spray or shower, and heats it or increases its temperature.
In my former Invention the feed water is led through an internal pipe and rose,
the steain intermingling with and heating the water.
In this my present. Invention I lead the steam from the boiler into an internal
perforated pipe provided with a suitable cock, and also being fitted with a non-
return valve and with nozzles on the perforations, being the steam outlets. This
pipe is fitted inside a chamber or vessel, into and through which the feed water is
forced. The feed into the vessel is through a check or non-return valve.
The vessel may be provided with a diaphragm and internal pipe, through which
the internal steam pipe passes, so that the feed water may come into more direct
contact with the steam.
The vessel is provided with an outlet or discharge passage, which communicates
with a pipe leading to the boiler.
The internal steam pipe is fitted with a drain pipe or nozzle, which may open
into or above the outlet or discharge pipe.
The action of the apparatus is the feed water is forced into the vessel and
intermingles with the steam from the boiler, which issues from the internal steam
[Price 6d.]

page_text: pipe through the nozzles. The steam and water thus intermingling the water
becomes heated or superheated, and passes to the boiler as a heated or super-
heated feed.
The advantages of this arrangement of apparatus over that described in the
Specification of my former Invention, before referred to, are, the steam and water
more thoroughly intermingle; the internal steam pipe being fitted with a non-return
valve, the concussions resulting from the condensation of the steam are obviated or
prevented from affecting the steam pipe. In my former Invention the steam became
condensed suddenly by the vessel being steam filled and operated on by the shower
or spray of water. In this my present Invention the action is reversed; the vessel
is water filled, and the steam is gradually condensed, so that concussions by sudden
condensation of a body of steam are avoided. Also, great benefit is derived by the
prevention of the unequal contraction and expansion of the parts of the apparatus,
as the temperature is kept much lower.
The essential difference of this my present Invention over my former Invention
consists in water filling the vessel and steam being applied thereto, instead of steam
filling the vessel and water being applied thereto. The former Invention to a certain
extent created a vacuum in the vessel, and in the present Invention no vacuum can
result.
It will be obvious that my Invention can be applied to heating or superheating.
water when used for other purposes than feeding steam boilers.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Sambrook in the Great Seal Patent Office on the 20th April
1877.
WILLIAM SAMBROOK, of Liverpool, in the County of Lancaster.
"IMPROVEMENTS
IN HEATING AND SUPERHEATING THE FEED WATER OF STEAM BOILERS AND IN
APPARATUS EMPLOYED THEREFOR, APPLICABLE ALSO FOR HEATING WATER USED
FOR OTHER PURPOSES."
My Invention relates to certain improvements upon a former Invention, for
which I obtained Letters Patent bearing date the 18th day of February 1873, and
Numbered 596. This former Invention relates to certain 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 water. The apparatus described consists of a chamber or
vessel containing a rose or perforated pipe, which discharges into such vessel a spray
or shower of water from the feed pump. The steam from the boiler enters the
vessel and acts upon the spray or shower, and heats it or increases its temperature.
In my former Invention the feed water is led through an internal pipe and rose,
the steam intermingling with and heating the water.
In this my present Invention I lead the steam from the boiler into an internal
perforated pipe provided with a suitable cock, and also being fitted with a non-
return valve and with nozzles on the perforations, being the steam outlets. This
pipe is fitted inside a chamber or vessel, into and through which the feed water is
forced. The feed into the vessel is through a check or non-return valve.
The vessel may be provided with a diaphragm and internal pipe, through which
the internal steam pipe passes, so that the feed water may come into more direct
contact with the steam.
The vessel is provided with an outlet or discharge passage, which communicates
with a pipe leading to the boiler.
The internal steam pipe is fitted with a drain pipe or nozzle, which may open
into or above the outlet or discharge pipe.
The action of the apparatus is the feed water is forced into the vessel, and
intermingles with the steam from the boiler, which issues from the internal steam
pipe through the nozzles. The steam and water thus intermingling, the water

page_text: becomes heated or superheated, and passes to the boiler as a heated or super-
heated feed.
The advantages of this arrangement of apparatus over that described in the
Specification of my former Invention, before referred to, are, the steam and water
more thoroughly intermingle; the internal steam pipe being fitted with a non-return
valve, the concussions resulting from the condensation of the steam are obviated or
prevented from affecting the steam pipe. In my former Invention the steam became
condensed suddenly by the vessel being steam filled and operated on by the shower
or spray of water. In this my present Invention the action is reversed; the vessel
is water filled, and the steam is gradually condensed, so that concussions by sudden
condensation of a body of steam are avoided. Also, great benefit is derived by the
prevention of the unequal contraction and expansion of the parts of the apparatus,
as the temperature is kept much lower.
The essential difference of this my present Invention over my former Invention
consists in water filling the vessel and steam being applied thereto, instead of steam
filling the vessel and water being applied thereto. The former Invention to a certain
extent created a vacuum in the vessel, and in the present Invention no vacuum can
result.
It will be obvious that my Invention can be applied to heating or superheating
water when used for other purposes than feeding steam boilers.
In order that my said Invention may be properly understood I will now proceed
more particularly to set forth the system, mode, or manner in or under which the
same is or may be used or practically carried into effect. The Sheet of Drawings
accompanying are hálf size, and like letters and figures denote similar parts on the
separate views.
Figure 1 is a sectional side elevation of a feed water heater constructed according
to my Invention; Figure 2 is a section through A, B, Figure 1.
Upon reference it will be seen that A is the feed water receiver, which is pro-
vided with B, a valve box; C, a feed pipe from the pump; D, a feed pipe to
boiler; E, an internal steam pipe fitted with a non-return valve F, nipples L, and
drain pipe K; S, pipe from boiler provided with steam cock T.
The action is, the feed water passes from the feed pump into the receiver A, and
through the annular space round the pipe E, and to the boiler through the pipe D.
During its passage through the receiver A the feed water is heated or superheated
by the steam which issues through the nipples L of the steam pipe E.
Having now described and particularly ascertained the nature of my said Invention,
and the system, mode, or manner in or under which the same is or may be used or
practically carried into effect, I would observe in conclusion that what I consider
to be novel and original, and therefore claim as the Invention secured to me by
the herein-before in part recited Letters Patent is,―
Firstly. A feed water heater consisting of a vessel such as A, which is water
filled, and live steam being applied thereto (instead of a vessel such as A, which is
steam filled, and water being applied thereto), the water by such application being
heated or superheated, and passing to the boiler or otherwise as a heated feed.
Secondly. A feed water heater consisting of a vessel such as A, provided with a
valve such as B, an inlet pipe such as C, an outlet pipe such as D, an internal pipe
such as E, non-return valve such as F, drain pipe such as K, steam pipe such as S,
steam cock such as T, arranged in relation to each other part to part, as shown in
the accompanying Drawings and described in the beforegoing Specification.
In witness whereof, I, the said William Sambrook, have hereunto set my
hand and seal, this Sixteenth day of April, in the year of our Lord One
thousand eight hundred and seventy-seven.