IMPROVEMENTS IN APPARATUS FOR REMOVING THE SEDIMENT FROM AND PREVENTING IN- CRUSTATION IN STEAM BOILERS
Year: 1861

page_text: LETTERS PATENT to Peter Taylor, of the City Road; Hulme, in the City
of Manchester, Engineer, for the Invention of "IMPROVEMENTS IN
APPARATUS FOR REMOVING THE SEDIMENT FROM AND PREVENTING IN-
CRUSTATION IN STEAM BOILERS."
PROVISIONAL SPECIFICATION left by the said Peter Taylor at the Office,
of the Commissioners of Patents, with his Petition, on the 31st August
1861.
I, PETER TAYLOR, of the City Road, Hulme, in the City of Manchester,
Engineer, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN APPARATUS FOR REMOVING THE SEDIMENT FROM AND PREVENTING
INCRUSTATION IN STEAM BOILERS," to be as follows:-
My Invention consists in applying a pipe to the interior of a steam boiler,
which pipe is made with a longitudinal slot or slots extending the whole or the .
greater part of the length of the boiler, and communicating with an off pipe,
in which is a discharge valve capable of being opened and closed rapidly; the
valve is of the usual mushroom-shape, and in the boss or on the spindle of the
valve is a diagonal groove taking in a fixed stud; the groove is of such an.
inclination, that by turning the spindle about one-half round the valve is
opened sufficiently to discharge the sediment which enters the pipe through
the slot or slots above referred to. In some cases two or more slotted pipes.
are applied near the bottom of the boiler, and one or more are supported near
the surface of the water in the boiler to collect the scum; the pipes may be
connected to the same blow-off valve, or each pipe may have its separate
valve.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Peter Taylor in the Great Seal Patent Office on the 27th
February 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, PETER
TAYLOR, of the City Road, Hulme, in the City of Manchester, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirty-first day of August, in the year of our
Lord One thousand eight hundred and sixty-one, in the twenty-fifth year
of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, tho said Peter Taylor, Her special license that I, the said
Peter Taylor, my executors, administrators, and assigns, or such others
as I, the said Peter Taylor, 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 Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN APPARATUS FOR REMOVING THE SEDIMENT FROM AND PRE-
VENTING INCRUSTATION IN STEAM BOILERS," upon the condition (amongst
others) that I, the said Peter Taylor, 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, tho said Peter Taylor, do hereby declare
the nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement (that is to say) :-
:-
The nature of my Invention consists in applying a pipe to the interior of a
steam boiler, which pipe is made with a longitudinal slot or slots extending
the whole or the greater part of the length of the boiler, and communicating
with an off pipe, in which is a discharge valve capable of being opened and
closed rapidly; the valve is of the usual mushroom shape, and in the boss or
on the spindle of the valve is a diagonal groove taking in a fixed stud; the
groove is of such an inclination, that by turning the spindlo about one-half
round, the valve is opened sufficiently to discharge the sediment which enters
the pipe through the slot or slots above referred to. In some cases two or more

page_text: slotted pipes are applied near the bottom of the boiler, and one or more. are
supported near the surface of the water in the boiler to collect the scum;
the pipes. may be connected to the same blow-off valve, or each pipe may
have its separate valve.
And in order that my Invention may be fully understood and readily.
carried into effect, I will proceed to describe the means pursued by me,
reference being had to the accompanying Sheet of Drawings, and to the
figures and letters marked thereon.
Fig. 1 is a plan of a boiler with a single flue to which my improved slotted
pipes for removing the scum and sediment are applied; Fig. 2 is an end
elevation of the same.
a, a, are two rows of pipes connected together by the pipe b; all these pipes
are placed a little below the level of the water in the boiler; slots are cast or
otherwise made in these pipes, either straight or in an angular direction,
through which the scum off the water enters, and it is blown off when required,
through the discharge valve c, the peculiar construction of which will be.
described hereafter. I wish to remark that the total area of the slots in the
pipes a and b is greater than that of the valve. Near the bottom of the
boiler are the two slotted pipes d, d, which are connected together by the
pipe e; this pipe is in communication with the discharge valve c¹; the total
area of the slots in the pipes d, d, is greater than that of the valve c¹.
Fig. 3 is a side elevation, in section, and Fig. 4 an end view, of a two-flued
boiler to which my improvements are applied. In this instance only one row,
of slotted pipes a is employed for removing the scum, and one row of slotted
pipes d for carrying off the sediment; both these pipes are connected to the
pipe f, and both scum and sediment are blown off when required through the
discharge valve c; the slots in the pipes d are placed near the bottom of the
boiler.
>
Fig. 5 is a side elevation, in section, and Fig. 6 an end view, of a boiler with
two flues, showing another modification of my Invention. In these views the
row of pipes a for taking off the scum is placed in the centre of the boiler, and
communicates with the discharge valve c; and the row of pipes d for the.
sediment is in communication with the valve c; both the pipes a and d are
shewn with long slots for the scum and sediment to pass through; it is,
however, evident that the slots may be cast in the pipes of any convenient
length or size, but in all cases the total area of the slots exceeds the area of
the discharge valve.
Figs. 7 and 8 are two sections of my improved discharge valve, which can
be opened and closed very rapidly, thereby allowing the scum and sediment to

page_text: be blown off instantaneously. The valve itself, marked c, is of the usual
mushroom shape, and in the boss is 'n diagonal groove, into which a stud pro-
jecting from the spindle centers; the spindle passes through a stuffing box,
and it is prevented from rising or dropping by an annular groove fitting in a
fork. When the spindle is turned partly round, the valvo instantly
rises off its seating. to discharge. the scum and sediment; the advantage. of
making the dischargo valve to open rapidly is, that the water in the boiler
becomes suddenly agitated when the valve is opened, and the scum and
sediment are more effectually removed. than would be the case were the valvo
to be opened gradually; this sudden rush of water prevents the formation of
deposit or incrustation at the bottom of the boiler.
I wish to remark that in many instances the pipes for the discharge of
the sediment may be used independently of the pipes for discharging the scum.
Having thus stated the nature of my Invention, and described the manner
performing the same, I wish it to bo understood that I make no claim to
the use of perforated pipes for discharging the sediment from steam boilers, as
perforated pipes have before been employed for this purpose; but what I do
claim is,
.....
First, the casting of the slots or perforations in pipes for discharging the
scum and sediment, instead of drilling such perforations as heretoforo
1.7
customary."
.. Secondly, making the total or collective area of the slots or perforations in
the pipes for discharging the scum and sediment of steam boilers greater than
the area of the discharge valve.
And, lastly, the improved modo of rapidly opening and closing the discharge
valve of steam boilers, as shewn and described..
In witness whereof, I, 'the said Peter Taylor, have hereunto set my
hand and seal, this Twenty-sixth day of February, in the year of
our Lord One thousand eight hundred and sixty-two.
DETER TAVLOR