AN IMPROVEMENT IN CERTAIN APPARATUS, RENDERING THE SAME APPLICABLE TO STEAM ENGINES
Year: 1831

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
BRUNTON, of Park Square, Regent's Park, in the County of Middlesex,
Esquire, send greeting.
WHEREAS His present Majesty King William the Fourth, by His Letters
Patent under the Great Seal of the United Kingdom of Great Britain and
Ireland, bearing date at Westminster, the Fourteenth day of April now last
past, did give and grant unto me, the said Thomas Brunton, His especial
licence, full power, sole privilege and authority, that I, the said Thomas
Brunton, my executors, administrators, and assigns, or such others as I, the
said Thomas Brunton, my exccutors, administrators, or assigns, should at any
time agree with, and no others, from time to time and at all times thereafter
during the term of years therein expressed, should and lawfully might make,
use, exercise, and vend, within England, Wales, and the Town of Berwick-
upon-Tweed, and also in all His Majesty's Colonies and Plantations abroad,
an Invention of "AN IMPROVEMENT IN CERTAIN APPARATUS, RENDERING THE SAME
APPLICABLE TO STEAM ENGINES," communicated to me by a certain foreigner
residing abroad; in which said Letters Patent there is contained a proviso
obliging me, the said Thomas Brunton, by an instrument in writing under my
hand and seal, particularly to describe and ascertain the nature of the said
Invention, and in what manner the same is to be performed, and to cause the
same to be inrolled in His said Majesty's High Court of Chancery within six
calendar months next and immediately after the date of the said recited
Letters Patent, as in and by the same, reference being thereunto had, will
more fully appear.

page_text: NOW KNOW YE, that in complianco with tho said proviso, I, the said
Thomas Brunton, do hereby declare that the nature of the said Invention,
and the manner in which the same is to be performed, is described and ascer-
tained by the Drawings hereunto annexed, and as follows, that is to say:-
The said Invention of an Improvement in Certain Apparatus, rendering the
same applicable to Steam Engines, consists in a peculiar construction and
combination, or application, as herein-after mentioned, of certain chambers,
vessels, or receptacles capable of containing water, which is to be heated
therein; and while the water is receiving or inibibing heat, rapid currents will
be formed in the water by means of the peculiar construction of the chambers,
vessels, or receptacles, which will be found greatly advantageous in com-
municating heat to the contents of any boiler used in generating steam for
the working of steam engines to which such chambers are applied.
Drawing 1, Figure 1: a, a, a, represents a side elevation of three wrought
iron bars, which I call chamber bars. These bars are arranged in the position
they assume when rivetted between two wrought iron plates, and when so united
or combined. they form one of my improved chambers for heating water to
generate steam. Circular holes for rivets to pass through are shown in eacli
chamber bar, and at the end of these bars square holes b, b, b, b, b, are formed
to receive an iron key in each, the use of which will be more particularly
described hereafter. Figure 2 is a plan or edge view of the same bars.
Figure 3 represents the three chamber bars laid down upon a wrought iron
plate c, which is used to form one side of the chamber; a similar one is laid
over the bars inclosing them, the whole being firmly and very closely united by
rivets, which pass through both side plates, and chamber bars also, and then
cach chamber will appear as shewn in Figure 4. Figure 5: A shews a front
elevation of a wrought iron plate, which I call a chamber plate; six parallel
apertures d, d, d, d, d, d, are cut out of this plate, into each of which tho
open end of a chamber enters, and when so placed each chamber may be fixed
permanently by keys c, c, c, e, e, that enter the square apertures b, b, b; b, b,
formed at the ends of each chamber bar. Three of the apertures in this
plate are shewn open and three are shown with the chambers fixed in their.
places by the keys e, e, c, e, c. Figure 6 represents an edge view of the
chamber plate. Figure 4 represents a side view of Figure 5, shewing one of
the chambers fixed by tho keys e, e, e, e, e, to the chamber plate A. f represents
an iron shoulder plate rivetted to the chamber plate c; a similar one is also
fixed to the opposite plato of each chamber; these plates form a shoulder on
cach side of each. chamber, making a close joint with the chamber plate A
when the koys e, e, e, e, e, are driven into the apertures of the chamber bars.

page_text: Figure 7 represents a plan or bird's eye view of a single chamber attached to a
fragment of the chamber plate A. Figure 8 shews an horizontal section
taken through the line B, B, in Figure 4. Figure 9 represents a vertical
section of Figure 4, taken through the line C, C, in Figure 4. Figure 10
represents a plan or bird's eye view of six chambers fixed to the chamber
plate A; and Figure 11 shews a front view of the same parts combined; the
distance or space between the chambers will be plainly seen, each space being
a flue to conduct flame and heat to the whole external surface of each chamber.
Figure 12 represents a front elevation of a complete boiler for generating
steam, the position of the chambers for heating water being shewn in dotted
lines. Figure 13 shows a side elevation of Figure 12, the internal arrangement
and combination of the heating chambers being also shewn in dotted lines.
Figure 14 represents a vertical section produced by a plane passing through the
dotted line D, D, in Figure 12. Figure 15 shews a vertical section produced
by a plane passing through the dotted line E, E, in Fig. 18. Figure 16
represents an horizontal section of Fig. 13, produced by a plane passing
through the dotted line F, F, shewn in Figures 13 and 14.
Having enumerated and explained the various individual parts essentially
requisite for the more advantageous generation of steam, I shall now describe
the arrangement and combination of the whole, and also shew the advantages
to be derived by the peculiar construction and application of the parts that
constitute my Invention. In Fig. 14 G, G, G, represents a vertical section of
a wrought iron boiler, filled with water as high as the line H, H; A, A, shews
a section of the chamber plate fixed so as to form one side of tho boiler;
c represents a section of one of the heating chambers, fixed or attached to
the chamber plate by keys passing through the apertures formed in the cham-
ber bars a, a, a, a, a, as shewn at b, b, b, b, b; I, I, I, I, represent a space or
cavity which forms the fireplace or furnace; within this space the whole of
the heating chambers are placed when they are connected with the chamber
O plate A, A, as before described; J represents one of the fire bars, and above
this is placed the fuel, the flame and heat from which ascends between the
chambers, and after striking against the upper part or crown of the furnace or
fireplace it reverberates upon the top of the chambers, and finally escapes
through the chimney K, K, into the atmosphere. L represents a jacket of
wrought iron fixed around the chimney in the manner shewn in Figure 14; this
is supplied with water from a cistern, as shewn at M in Figure 13, and being
heated therein it is then used to supply that which is evaporated from the
boiler, and for this purpose a pipe N is attached, which conveys the heated
water into the boiler, the supply being regulated by a float and regulating

page_text: the
weight in the usual manner. By a careful inspection of Figures 14, 15, and
16, it will be plainly seen that the water contained in the boiler has a free and
perfect communication with the water contained in each of the heating
chambers, therefore whenever the water in the heating chambers receives an
addition of caloric from the fire at the lowest part of the chamber, near g,
Figure 14, such addition of caloric will create a very rapid current in the
direction of the darts shown therein, and passing out of the upper opening
seen at h, it will be communicated to the water contained in the upper
portion of the boiler in a way that will be found peculiarly advantageous;
when applied in the generation of steam for supplying steam engines
similar effects will be produced in the internal portions of cach heating
chamber, the currents produced in all the chambers being created by
the same means, and producing the same results. It will be very evident
that when, by the peculiar construction and combination of any vessels con-
taining liquids, rapid currents are produced by the addition of caloric, the heat
imbibed will be most rapidly and advantageously communicated to every part
of the liquid contained in the boiler, an object of the greatest importance in
process of generating steam; and these advantages, it will be also evident,
are attained in the highest degree by the immense surface of the heating
chambers exposed to the action of the fire, when compared with their internal
contents, or with any other mode of generating steam for the purpose of sup-
plying steam engines. The lever or beam i, Figure 18, turns in brasses on
the top of the pillar j, upon a centre which has a projecting part behind and
in a line with the axis. This projection has a hollow square formed in its
end, which receives the squared end of a plug in the regulating cock, fixed in
the pipe N at . By this means the whole weight of the beam and all its
appendages will be supported by the pillar, without exerting any pressure on
the cock that would be unfavorable to a proper action. O represents a steam
pipe, which may be continued to the engine in any situation; and P is a
safety valve of tho usual description. In Figure 14 Q, Q, represents a portion
of the back part of the boiler, which covers an opening or manhole equal in
area to that of the ends of all the heating chambers. This plate or cover Q, Q,
is fixed to the remaining side of the boiler by screw bolts, therefore when they
are withdrawn and the cover removed the chambers may bo cleaned with tho
greatest facility whenever any deposit or incrustation takes place. This most
desirable object has always been attended with the utmost difficulty in all cases
whero tubes or other very small receptacles have been used for heating water
for the purpose of generating steam; but in the said Invention, for which the
said Letters Patent have been granted, nothing moro is necessary than to usc

page_text: an iron scraper, exactly equal in breadth to the opening of the heating chamber,
and as all depositions and incrustations constantly form at the lower surface of
the vessel or the lower part of each compartment, it may be instantly removed
with very little trouble, and the cover of the opening or manhole readily re-
placed. It will, however, be found that owing to the rapid currents generated
in the heating chambers on account of their peculiar construction, much less
deposition or incrustation will take place than has been the case in receptacles
otherwise constructed.
Figures 12, 13, 14, 15, and 16 are arranged and combined in such a manner
as to suit them for using pit coal as fuel, considerable room being allowed
below the chambers for the flame to generate, and thereby complete the com-
bustion of the gaseous products of the decomposed coal. But where coke is
required to be used as fuel, the chambers must be placed so near the furnace
bars that the burning fuel may be very nearly in contact with the bottoms of
the chambers, and it will also be necessary to allow a greater space between
the chambers, in order to render it practical to throw down fresh supplies of
fuel from the upper part of the furnace or fireplace.
Figure 17 represents a front elevation of an engine boiler, fireplace, or
furnace, and heating chambers. The lower portion below the feeding doors
R, R, is represented as a vertical section, by which means the different arrange-
ment and combination of the parts may be more plainly seen, and thereby
compared with the previously described Figures. This boiler is suitable for a
steam boat, and for that purpose a portion of the water contained in it is made
to occupy a space below the ashpit, in the manner usually adopted. S represents
a steam chamber (the upper part being broken off), from which a steam pipe
issues at any convenient part to convey steam to the engine. The feeding
apparatus, safety valve,. and other appendages commonly used, may of course
be applied according to circumstances.
Figure 18 is a vertical section, by a plane passing through the centre of
Figure 17, on the line T, T. The position of the feeding and fire doors,
steam chamber, and heating chambers, will be more fully explained by com-
paring each of these Figures with the other.
In Figures 14 and 15, U, U, represents an outer case of iron, containing a
quantity of charcoal dust mixed with a small portion of any suitable plastic mate-
rial sufficient to give the particles adhesion; this acts as a nonconductor of heat,
and should be applied to prevent the escape of heat, either in the way here
shewn or by any other means, usually adopted, or the same effect may be
produced by any other nonconducting medium or material; and in order to
prevent the escape of heat from the front of the furnace or fireplace, the

page_text: internal part in front is lined with fire bricks, as shown at V, V, in Figures
14, 16, and 18.
And I hereby further declare that the said improved heating chambers may
be varied in their proportions as may be found most convenient for certain
cases, but the best and most advantageous effect will be obtained from them
when the proportions here given are adopted, as the most rapid generation of
steam appears to be obtained when the internal breadth of the chambers are
equal to one inch, but various heights may be adopted, according to circum-
stances or the quantity of steam that may be required; and although I have
in these Figures shewn them combined to the chamber plate, parallel to each
other, yet in some cases it will be found advantageous to fix the chambers to the
chamber plate, inclining to a vertical and central line, as shewn in Figure 19,
the spaces between each chamber being narrower at the upper part than below,
by which means the heated air will be detained between the chambers longer
than when they are placed exactly parallel to each other, for in this case the
narrowed space will detain, and, as it is technically called, wire-draw the heated
air, giving it time to impart its heat more advantageously to the heating
chambers. Chambers, vessels, or receptacles, of the description herein set
forth and explained, may be made of iron, copper, or any other suitable metal
or material, and they may also be constructed either of wrought or cast metal,
as the judgment of the workınan or the necessity of circumstances may dictate.
They may bo also combined with steam boilers of various kinds, used for the
purpose of generating steam for the supply of steam engines. The heating
chambers shown in these Figures are separated internally into two compart-
ments, in each of which separate currents will be formed; but where heating
chambers are constructed of a less height a single bar in the centre will be
sufficient, as shown by the brackets in Figures 1 and 9. I shall also observe,
that the same letters of the alphabet are used to designate similar parts, in
whatever Figure they may be found. I shall also observe, that in many cases
it will be found advantageous to carry a flue horizontally through the water in
the upper part of any boiler, as shown in dotted lines at l, m, n, in Figure 14;
in such case two openings into the flue may be made, as shewn at land m, and
the flue being made broad and flat, may have an equal area to the chimney n,
into which it conveys the smoke, which will add considerably to the generation of
steam in the boiler. Drawing 2, Figure 20, represents a vertical section of a
steam boiler G, G, G, G, with a set of licating chambers c, c, C, C, C, C, C,
inclined to a central and perpendicular line r, r, the spaces between each
chamber being closer above than they are below, by which means the heat
applied will not escape so rapidly as when they are placed in a perpendicular

page_text: position and parallel to each other. Within this boiler, and under the water
to be heated, three parallel and horizontal flues are constructed, W, W, W, con-
nected by perpendicular apertures, 1, 1, and m, m, Figure 21, shewn in dotted
lines, the opening between each flue forming an horizontal space to contain
water, which being heated therein assists in generating steam, each of these
horizontal spaces opening into the boiler. The peculiar direction of the flame
and heated air through these flues will be seen by the direction of the darts at
1, 1, and m, m, in Figure 21, which represents a vertical section through the
centre of the boiler, and also the central heating chamber c, taken by a plane
at right angles to the section shewn in Figure 20. A, A, Figure 21, repre-
sents the chamber plate to which all the chambers are fixed by keys, as
before described, but in order to support the chambers and strengthen the
chamber plate, a thick boss plate o, o, of cast iron, having as many apertures
as there are chambers cast in it, is bolted to the chamber plate A, and against
the inner surface of this plate each shoulder plate f, seen in dotted lines, takes
a bearing and forms a joint therewith. The back boiler plate p, p, has an
aperture or opening in it large enough to permit all the chambers and also the
plate o, o, to pass through it, and when so placed the chamber plate A, A, is
united to the back boiler plate p, p, by screw bolts, therefore, when any of the
chambers are to be renewed the whole may be withdrawn from the furnace
I, I, with great facility by removing the external plate or side of the boiler
seen at q, q. The front plate or side of the boiler, which also forms the front
plate of the furnace or fireplace, is shewn in a front elevation at Figure 22,
containing the fire door, which is of the usual description. Figure 23
represents a front elevation of the thick cast iron boss plate o, o, separated from
the chamber plate A, the use of which has been shewn in Figures 20 and 21,
described above. Figure 24 represents a vertical section of Figure 23, by a plane
passing through the line s, s, in Figure 23. Figure 25 shews an horizontal
section of the same plate, taken on the line t, t, in Figure 23. Figure 26
represents a plan or bird's eye view of the top of the boiler; K is the place
where the iron chimney is attached; the perpendicular flues are shewn in dotted
lines at 1, 1, and m, m, the flat horizontal plates being separated a proper dis-
tance from each other by the flue irons, shewn by dotted lines near l, l, and
m, m, a plan and section of one of these irons being shown in Figure 27.
Drawing 2, Figure 28: I, I, I, I, represents a front elevation of the brick-
work that surrounds and incloses the space forming a fireplace or furnace,
within which may be seen two sets of heating chambers, constructed in
the I have before described. The lower set c, c, c, c, c, c, c, c, are
placed so close that large pieces of coke may be laid upon them, by
which means when they become ignited from the flame of the fuel placed
way

page_text: on the furnace bars J, J, sufficient heat will be produced to cause the
water contained in the upper set of chambers to boil, and thereby augment
the generation of steam very advantageously. The upper set of chambers are
placed wider apart than the lower set, by which arrangement large pieces of
coke may more casily be thrown in between them. Figure 29 represents a
front view of the front furnace plate containing two sets of firo doors, 'the
lower ones being used for feeding coals to the fire bars below the bottom
chambers, and the upper doors are for the purpose of feeding coke beneath
the upper chambers. Figuro 30 represents a vertical section of, Figure 28,
by a plane passing through the line x, x, in Figure 80, the position of a flue
having two openings from the arch or crown of the furnace or fireplace will
be seen at l, m, both of them uniting and joining the chimney K. These flues
will produce the effect of dividing and spreading the flame and heated air more
generally over the whole surface of the chambers than when a singlo opening
is used. The boss plate o, o, is bolted to the chamber plate A, A, and the
chamber plate A, A, is united to the back boiler plate p, p, therefore when the
chamber plate A, A, is released from the back boiler plate p, p, the whole of
the chambers may be withdrawn from the furnace by removing the plate Q, Q
or the boss plate, with chambers attached, may be united to a back boiler or
chamber plate, in the manner shewn in Figure 31, which represents a vertical
section of a chamber c, boss plate 0, 0, and chamber plate A, combined, and
in this case the boss plate and chambers alone may be removed by unscrewing
the bolts that unite the boss plate o, o, to the chamber plate A. Figure 32
represents a plan of the boiler shown in Figuro 28, which by having a portion
of the upper part divided will permit it to be drawn away from the fireplace
or furnace without disturbing either the chimney or its flues.
And I hereby further declare that tho said Improvement in Certain Apparatus,
reudering the same applicable to Steam Engines, consists in the peculiar con-
struction and combination, or application of certain vessels, receptacles, or
chambers, as above described, which I call heating chambers, constructed with
an internal bar or bars, arranged as above described, by which means, if water
is heated therein, such rapid currents will be generated that, when they are
applied to any suitable boiler used for the supply of steam to steam engines,
they will by their superior property of heating water generate steam more advan-
tageously than by any means hitherto adopted for that purpose.
In witness whereof, I, the said Thomas Brunton, have hereunto set my
hand and scal, this Eleventh day of October, in the year of our Lord
One thousand eight hundred and thirty-one.
THOMAS (L.s.) BRUNTON.

page_text: AND BE IT REMEMBERED, that on the same Eleventh day of October,
in the year above mentioned, the aforesaid Thomas Brunton came before our
Lord the King in His Chancery, and acknowledged the Specification aforesaid,
and all and every thing therein contained, in form above written. And also
the Specification aforesaid was stamped according to the tenor of the Statute
in that case made and provided.

page_text: 211
granted
Inomas Drunton, or Lark
Square, Regent's Park, in the County of Middlesex, Esquire, for an
Invention communicated to him by a foreigner then residing abroad,
of "AN IMPROVEMENT IN CERTAIN APPARATUS, RENDERING THE SAME
APPLICABLE TO STEAM ENGINES," and bearing date at Westminster,
the Fourteenth day of April, One thousand eight hundred and
thirty-one.
MEMORANDUM OF ALTERATIONS, entered, pursuant to an Act passed
in the fifth and sixth years of His present Majesty's reign, entitled "An Act to
amend the Law touching Letters Patent for Inventions," with the Clerk of the
Patents in England, by John Stephens, of Paul's Wharf. Upper Thames
Street, in the City of London, Merchant, and Augustus Manning, of Chalk
Hill House, Kingsbury, in the County of Middlesex, Gentleman, they
having obtained the said Patent by virtue of an assignment, bearing dato
the Sixteenth day of February, One thousand eight hundred and thirty-one,
and made between William Brunton, of Park Square, Regent's Park, in the
County of Middlesex, Esquire, of the first part, Elisha Haydon Collier, late
of Boston, in the State of Massachusetts, in North America, but then of
the City Road, in the said County of Middlesex, Civil Engineer, of the
second part, and John Stephens, of Paul's Wharf, Upper Thames Street,
in the City of London, Merchant, and Augustus Manning, of Chalk Hill
House, Kingsbury, in the said County of Middlesex, Gentleman, of the third
part.
We, the said John Stephens and Augustus Manning, do hereby declare,
that since we became assignees of the said Letters Patent, we have been

page_text: advised that the title of the said Invention, as set forth in the said Letters
Patent, and in the Specification which has been inrolled pursuant to the
proviso in the said Letters Patent in that behalf contained, does not clearly
define the nature of the said Invention, and is not a proper title for the said
Invention, and for these reasons wc, the said John Stephens and Augustus
Manning, do hereby make the following alteration in the title of the. said
Invention (that is to say):-
Wo introduce the words "called Boilers" between the word " Apparatus,"
and the word "rendering," and also introduco the word "better" between
the word "samo" and the word "applicable," so that the said title, when so
altered as aforesaid, will read thus: An Improvement in certain Apparatus
"called Boilers, rendering the same better applicable to Steam Engines."
And we, tho said John Stephens and Augustus Manning, do hereby further,
that for the following reasons, that is to say, in order to make the said
Specification consistent with the title so altered as aforesaid, and in order
also more clearly to point out some of the advantages of the said Invention,
we do hereby make the following alterations in the Specification of the said
Invention (that is to say):-
In that part of the Specification which states generally in what the
Invention consists, instead of the words "the said Invention of an Improve-
"ment in certain Apparatus, rendering the same applicable to Steam Engines
"consists in a peculiar construction and combination or application, as herein-
"after mentioned, of certain chambers, vessels, or receptacles, capablo of
containing water, which is to be heated therein, and while the water is
receiving or imbibing heat, rapid currents will be formed in the water by
"means of the peculiar construction of the chambers, vessels, or receptacles,
which will be found greatly advantageous in communicating heat to the con-
"tents of the boiler used in generating steam for the working of steam engines
"to which such chambers are applied," we hereby substitute the following:
:-
"The said Invention consists in a peculiar construction and combination,
"and the application as herein-after mentioned, to steam engino boilers,
"of certain chambers, vessels, or receptacles for water which is to be heated
therein, and which are so constructed and arranged that while tho
"water is receiving or imbibing heat, rapid currents will be formed in the
"water, which will not only bo found greatly advantageous in communicating
heat to the contents of the boiler to which such chambers are applied,
but in marine engines in particular, will prevent the collection and crystal-
lization of salt, where its effects are most injurious."
And further on
in the descriptive part of the said Specification, where Figure 11 is

page_text: under description, instead of "each space being a flue to conduct flame,"
we hereby add between the words "space" and "being" the words " when
the heating chambers are applied to a boiler;" and further on the said
Specification, after the words "this most desirable object has always been
"attended with the utmost difficulty, in all cases where tubes or other
very small receptacles have been used for heating water for the purpose of
generating steam," we hereby add the words "particularly for marine
engines where salt water is used." And further on in the said Specification,
where the metal of which the said heating chambers may be constructed,
is described after the words, "and they may also be constructed of either
wrought or cast metal, as the judgment of the workmen or the necessity
"of circumstances may dictate; they may also be combined with," we hereby
add the words "or applied to." And at the conclusion of the said Speci-
fication, instead of the present claiming clause beginning with the words
"I hereby further declare," and so on to the end of the Specification, we
hereby substitute the following:-
And I hereby claim as the Invention aforesaid the following improve-
"ments (that is to say):-The peculiar construction and combination, and
"the application to steam engine boilers of the vessels, receptacles, or
"chambers herein-before described, and which I call heating chambers,
whereby rapid currents will be created, which will communicate heat
"more rapidly to the water in the boiler, and prevent incrustation and
crystallization more effectually than any means hitherto adopted for that
purpose."
In witness whereof, we, the said John Stephens and Augustus Manning,
have hereunto set our hands and seals, the Twenty-fifth day of
April, in the year of our Lord. One thousand eight hundred and
thirty-six.
...
Signed, sealed, and delivered by the
above-named John Stephens &
Augustus Manning, in the presence of
JOHN STEPHENS. (LS.)
(L.S.).
A. MANNING.
ROBT F. DALRYMPLE,
Clerk to Mess" Adlington & Co.

page_text: To the Clerk of the Patents of England.
This is to certify, that John Stephens, of Paul's Wharf, Upper Thames
Street, in the City of London, Merchant, and Augustus Manning, of Chalk
Hill House, Kingbury, in the County of Middlesex, Gentleman, assignees
of Thomas Brunton, of Park Square, Regent's Park, in the County of
Middlesex, Esquire, have applied to me for leave to enter with you the within
written Memorandum of Alterations of part of the title and of the Specifi-
cation of a certain Invention communicated to the said Thomas Brunton
by a foreigner then residing abroad, for "which Letters Patent were duly
granted to him under the Great Seal, bearing date the 14th day of April 1881,
and the Specification of which was inrolled on the Eleventh day of October
1831. And on considering of the said application, and the same having been
advertized in the London Gazette on the 29th day of March, in the Morning
Herald on the 29th day of March, and tho Times on the 28th day of March
1886, and no objection having been made to the said application, I have
accordingly granted leave to the said John Stephens and Augustus Manning,
to file their said Memorandum of Alterations of part of the title and of
the Specification of the said Invention, pursuant to the Statute passed in the
sixth year of the reign of His present Majesty, entitled "An Act to amend
the Law touching Letters Patent for Inventions."