A FEED BOX FOR THE PREVENTION OF INJURY TO MARINE BOILERS WITH SURFACE CONDENSING ENGINES
Year: 1866

page_text: LETTERS PATENT to Henry Trotman, of Southampton, in the County of
Hants, Engineer, for the Invention of "A FEED BOX FOR THE PREVENTION
OF INJURY TO MARINE BOILERS WITH SURFACE CONDENSING ENGINES."
PROVISIONAL SPECIFICATION left by the said Henry Trotman at the
Office of the Commissioners of Patents, with his Petition, on the 21st
July 1866.
I, HENRY TROTMAN, of Southampton, in the County of Hants, Engineer,
do hereby declare the nature of the said Invention for "A FEED BOX POR
THE PREVENTION OF INJURY TO MARINE BOILERS WITH SURFACE CONDENSING
ENGINES," to be as follows:-
My Invention consists in the construction and application of a box or
chamber to or within marine boilers for the purpose of arresting the im-
purities in the condensed feed water and preventing their entry into and
thereby causing injury to the boiler.
This box or chamber (to the exact shape of which I do not confine myself)
I fit with a series of tubes supported in two end or side plates in such manner.
as to form altogether a framework which can with ease be removed from the
box or chamber. Both of the side or end plates are perforated to receive the
ends of the tubes, and one side or end plate is in addition perforated with
round, half round, or other shaped holes. This frame is placed in the box or

page_text: chamber in such a manner that two of its sides or ends fit closely to two of
the sides or ends of the box, leaving two spaces between the other sides or
ends (as the case may be) of the frame and the sides or ends of the box
or chamber. Above this framework of tubes and end plates I place a top
plate which covers not only the said framework but also the spaces just
mentioned, fitting closely to sides and ends of box or chamber, but capable of
being with ease removed; this top plate forms with the framework an inner
chamber. The feed pipe passes through the cover of box or chamber, through
the top plate and into inner chamber formed by top plate and framework, and
therein delivers. The water therefore from the feed is delivered within the
framework or inner chamber and flows around the tubes, thence through the
perforations at one end or side plate into one of the side or end spaces, and
thence it passes through the tubes to the other side or end space, where
the top plate is provided with holes for its passage. From the space between
the top plate and upper side of box or chamber the water gets away through
holes provided for that purpose into boiler. I prefer to fit this apparatus
within the boiler, and to make it of such a size as to pass through the man-
hole doors, and of such a form as to rest securely on or between the haunches
of the furnace tops. I propose to use one or more of these boxes or chambers
as may be required, and to remove and clean or clear them as from time to
time it may be desirable.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Trotman in the Great Seal Patent Office on the
21st January 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
TROTMAN, of Southampton, in the County of Hants, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by: Her Letters
Patent, bearing date the Twenty-first day of July, in the year of our Lord
One thousand eight hundred and sixty-six; in the thirtieth year of Her reign,
did, for Herself, Her heirs and successors, 'give' and grant unto me," the said
Henry Trotman, Her special licence that' I; the said Henry Trotman, my
executors, administrators, and assigns, or such others as I, the said Henry
Trotman, my executors, administrators, 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, within the United Kingdom of Great Britain and Ireland, the

page_text: Channel Islands, and Isle of Man, an Invention for "A FEED BOX FOR THE
PREVENTION OF INJURY TO MARINE BOILERS WITH SURFACE CONDENSING ENGINES,"
upon the condition (amongst others) that I, the said Henry Trotman, my
executors 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 Henry Trotman, 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:→
:
My Invention consists in the construction of a box or chamber, and the
application of the said box or chamber on, to, or within marine boilers for
the purpose of arresting the impurities of. the condensed feed water and
preventing their entry into or causing injury to the boilers.
This box or chamber (to the exact size of which I do not confine myself) I
fit with a series of tubes or iron rods or..bars supported in two end or side
plates. in such manner as to form altogether a framework which can be
Both the end or side
removed with ease from the box or chamber.
plates are perforated so that the ends of the tubes, rods, or iron bars may
be passed through and extend beyond the end or side plates, and one or both.
end or side plate may in addition be perforated with round, half round, or
5. other shaped holes; or the tubes, rods, or bars may be made so as to fit the
perforated end or side plates just loosely with a "loose fit." The framework
thus formed is placed in the box or chamber in such manner that two of its
sides or ends fit closely to two of the sides or ends of the box, leaving two
spaces between the other sides or ends (as the case may be).of the framework.
0. and the sides or ends of the box or chamber. I place a plate of zinc inside
the box between the ends of the tubes, rods, or bars, and the box. Above
this framework. of tubes or iron rods or bars and end or side plates I place a
top plate which I shall herein-after call an inner top plate, which covers not
only the said framework but also the spaces just mentioned, fitting closely to
5 the sides and ends of the box, but capable of being with ease removed; this
inner top plate forms. with the perforated end or side plates of framework an
inner chamber; above this inner top plate, I in some cases, place another
framework of tubes, rods, or iron bars to receive any impurities that may
escape from the inner chamber in which the first framework is placed. Above

page_text: the inner top plate or covering placed over the under framework I place a zinc
plate longitudinally inside the box on each side between the upper surface of
inner top plate or cover of the lower framework and the under surface of the
outer top plate or cover of feed box or at sides of upper framework.
In order that the nature of my said Invention and the manner in which the
same is to be performed may be more particularly described and ascertained,
I to this Specification append a Sheet of Drawings having figures and letters
of reference marked thereupon, the like letters being used to denote similar
parts in each Figure.
In these Drawings Figure 1 is a longitudinal section of one form of my
feed box; Figure 2 is a transverse section of the same; Figure 3, a plan of
outer top or cover; Figure 4, a plan with top or cover removed; Figure 5
a sectional plan at A, B, (Figure 2); and Figure 6 is a plan of top or upper
framework, which I in some cases use as herein-before described.
In these Drawings the tubes, rods, or bars are marked A, and are sup-
ported in the end plates or pieces marked B; C, C, are the spaces between
the ends B of framework and the ends of feed box; D, D, are plates of zinc
placed between the ends of the tubes, bars, or rods, and the ends of the box;
E is the inner top plate or cover for under frame; D', D¹, are the longi-.
tudinal pieces or plates of zinc herein-before alluded to as placed above inner
top plate, and D³ is a zinc plate at bottom of feed box; F is the feed pipe;
G (Figure 6) represents the top or upper framework which is placed in the
space marked H in Figures 1 and 2. When this framework is used I fix at
both ends on the inside of top cover a piece or pieces of perforated iron so as
to rest on the inner top plate E, and thereby secure the framework in its
place when the outer top plate or cover is screwed down to the sides and ends of
the feed box. The feed pipe F passes through outer top plate or the cover
of feed box through the inner top plate E and into the inner chamber, and
therein delivers the water which flows around the tubes, rods, or bars A,
thence through the perforations of both of the inner chamber plates D,
and thence it passes through the tubes and around the bars, and out at the
other side or end space where the top plate. is provided with holes for its
passage. In the particular form of feed box shewn in the Drawings, the
direction of the flow of the water is indicated by the arrows. From the space H
between the outer and inner top plates the purified water gets away through
holes provided for that purpose into boiler. I prefer to fit this feed box
inside the boiler in the manner shown in Figure 7 in the Drawings,
and to make it of such a size as to pass through the man-hole doors, and of
such a form as to rest securely on the stays between the sides of furnace and

page_text: tops. I
I propose to use one or more of these boxes or chambers as may be
required, and to remove them for repairs or to clean or clear them as. from
time to time may be required. I propose also to use tubes, rods, or bars of
circular, oval, or any shaped transverse section, and of any number or size,
and I may in some cases vary the relative positions of the feed pipe and the
chambers of feed box, in all cases providing that the same end of arresting
the impurities be attained by the described means.
Having now particularly described and ascertained the nature of my said
Invention, and the manner in which the same is to be performed, I wish it
to be distinctly understood that what I claim is, the construction and
application of a feed box for the purposes herein in this Specification
described, in the manner also herein described, or on the appended Drawings
illustrated.
In witness whereof, I, the said Henry Trotman, have hereunto set
my hand and seal, this Sixth day of November, in the year of our
Lord One thousand eight hundred and sixty-six.
Witness,
JOHN MOLSON.
HENRY TROTMAN. (L.8.)