IMPROVEMENTS IN GAS BURNERS, AND IN THE METHOD OF CONSTRUCTING AND MAXTRACTURING THE SAME.
Year: 1869

page_text: LETTERS PATENT to William Thomas Sugg, of Vincent Works,
Vincent Street, in the City of Westminster, for the Invention of
"IMPROVEMENTS IN GAS BURNERS, AND IN THE METHOD OF CONSTRUCTING
AND MAXTRACTURING THE SAME.
Scaled the 3rd September 1869, and dated the 18th March 1869.
PROVISIONAL SPECIFICATION left by the said William Thomas Sugg
at the Office of the Commissioners of Patents, with his Petition,
on the 18th March 1869.
I, WILLIAM THOMAS SUGG, of Vincent Works, Vincent Street, in the
City of Westminster, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN GAS BURNERS, AND IN THE METHOD OF CONSTRUCTING AND
MANUFACTURING THE SAME," to be as follows:-
These improvements consist in the delivery of the gas into the
chamber containing the aperture or apertures at which ignition takes
place at a low velocity and a temperature exceeding that of the
surrounding atmosphere as little as practicable, and in so arranging the
sizes and shapes of the tubes or channels and orifices that the shall
gas
issùc at the point of ignition at an inappreciable or the least possible
pressure; this is effected mainly by making the bore of the supply

page_text: tubes of such size that its or their aggregate area shall be less than the
area of the holes in the chamber, which is made of steatite or porcelain,
and from which the gas escapes and is burnt. There is also an arrange-
ment for regulating the quantity of gas admitted to the steatite or
porcelain chamber by making the nose piece adjustable by means of a
screw thereon and paper washers, and forming an inverted cone on the
inside of the upper part of the inlet chamber of the burner.
The improvement in manufacturing the burners consists chiefly in
casting and fixing together the principal parts constructed of metal at
one operation. For this purpose iron, steel, brass, or other suitable
metal moulds are formed in several pieces and fitted together with great
exactitude, having in the interior hollows corresponding in shape and
thickness to the various parts of the burner. The supply tubes are made
of brass or steel or other suitable substance, and are cut into lengths
and bent into forms to suit the hollows in the moulds chased to receive
them. When they are placed in position the other parts of the moulds
are brought together and a mixture of tin, lead, and antimony, or other
suitable metal or compound in a melted state is then poured into the
moulds, filling up the interstices and joining together the supply tubes
before mentioned. Upon separating the moulds the casting may be
removed, and requires but little "finishing" to fit it for use; a thread
must however be cut on the interior ring to receive the screw of the
steatite or porcelain top, a gas-tight joint being effected by serving the
screw with a little white lead and making the interior edge of the lava
top abut upon a shoulder of the ring before alluded to, a paper, card, or
other washer intervening.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Thomas Sugg in the Great Seal Patent
Office on the 18th September 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
THOMAS SUGG, of Vincent Works, Vincent Street, in the City of West-
minster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of March, in the year
of our Lord One thousand eight hundred and sixty-nine, in the thirty-

page_text: second year of Her reign; did, for Herself, Her heirs and successors,
give and grant unto me, the said William Thomas Sugg, Her spécial
licence that I, the said William Thomas Sugg, my executors, admi-
nistrators, and assigns, or such others as I, the said William Thomas
Sugg, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times there-
after 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 Inven-
tion for "IMPROVEMENTS IN GAS BURNERS, AND IN THE METHOD OF CONSTRUCTING
AND MANUFACTURING THE SAME," upon the condition (amongst others) that
I, the said William Thomas Sugg, 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 William Thomas Sugg, 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, reference being had to the Drawings
attached, and the letters marked thereon, that is to say :-
These improvements consist in the delivery of the gas into the
chamber containing the aperture or apertures at which ignition takes
place at a low velocity and a temperature exceeding that of the
surrounding atmosphere as little as possible, and in so arranging the
sizes and shapes of the tubes or channels and orifices that the gas shall
issue at the point of ignition at an inappreciable or the least possible
pressure; this is effected mainly by making the bore of the supply
tubes or channels of such size that in the aggregate the area shall be
less than the area of the holes in the chamber or top, which is made
by preference of steatite, lava, porcelain, or other incorrodible and non-
conducting material, from which the gas escapes and is burnt. There is
also an arrangement for regulating the quantity of gas admitted to the
steatite chamber by making the nose piece adjustable by means of a
screw thereon and paper or other suitable washers, and forming an
inverted cone on the inside of the upper part of the inlet chamber of the
burner

page_text: The improvements in manufacturing the burners consist chiefly in
casting and fixing together the principal parts, constructed of metal, at
one operation. For this purpose iron, steel, brass, or other suitable
metal moulds are formed in several pieces and fitted together with great
exactitude, having in the interior hollows corresponding in shape and
thickness to the various parts of the burner. The supply tubes are
made of brass, steel, or other suitable substance, and are cut in lengthis
and bent into forms to suit the hollows in the moulds chased to.receive
them. When they are placed in position the other parts of the moulds
are brought together and a mixture of tin, lead, and antimony or other
suitable metal or compound in a melted state is then poured into the
moulds, filling up the interstices and joining together the supply tubes
before mentioned. Upon separating the moulds the casting may be
removed and requires but little "finishing" to fit it for use; a thread
must however be cut on the interior of the ring to receive the screw of
the steatite top, a gas-tight joint being effected by serving the screw with
a little white lead or other cement, and making the interior edge of the
top abut upon a shoulder of the ring before alluded to, a paper, card, or
other washer intervening.
In order that the foregoing may be better understood Drawings are
attached hereto a description of which is as follows:-
Fig. 1 is a section, Fig. 2 an elevation, and Fig. 3 a plan of the
burner; in the latter Figure, however, the glass or chimney is supposed
to be removed. In each illustration the same parts are indicated by the
same letters of reference.
A, Fig. 1, is the nose piece or inlet for the gas, having a thread on its
interior for attachment to the fittings, and a thread on its exterior to
connect it with the inlet chamber B; C is the inverted cone, by means
of which, together with the paper washers D, D, the size of the conduit
formed between the nose piece and the inverted cone may be regulated
and adjusted; E, E, are the supply tubes, and F, F, is the steatite
chamber with its exit apertures at G, G, (shown more distinctly in
Fig. 3); H is the metal ring to which the top is connected, as before
described; I, I, is a cone to regulate the quantity of air to the exterior
of the flame; and J is the central aperture of the burner which admits
air to the interior surface of the flame; K is a spring to uphold the glass
chimney; L and M is a projection to support a globe or shade. The
arrows indicate the direction of the gas.

page_text: Having now described and particularly set forth the nature of this
Invention, and the mode of manufacturing the improved burner, I would
observe in conclusion that I do not confine or restrict myself to the
precise details described or referred to, as variations may be made without
deviating from the general method by which these improvements are
produced; but 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, the constructing, manufacturing, and means employed
in making gas burners, substantially as herein described.
In witness whereof, I, the said William Thomas Sugg, have here-
unto set my hand and seal, this Eighteenth day of September,
in the year of our Lord One thousand eight hundred and sixty-
nine.
WILLIAM T. SUGG. (L.S.)

page_text: In the Matter of Letters Patent granted to WILLIAM THOMAS SUGG, of
Vincent Works, Vincent Street, in the City of Westminster, for " IMPROVE-
MENTS IN GAS BURNERS, AND IN THE METHOD OF CONSTRUCTING AND
MANUFACTURING THE SAME," bearing date the Eighteenth day of March,
One thousand eight hundred and sixty nine, No. 921
DISCLAIMER AND MEMORANDUM OF ALTERATION proposed to be
entered by the said William Thomas Sugg.
WHEREAS since the filing of the Specification of the said Patent the sufficiency
of the Specification and the validity of the Patent have been brought into question
in consequence of my being compelled to take legal proceedings to stop the infringe-
ment of my said Patent:
And whereas in the litigation which ensued some obscurities were discovered
in the wording of the Specification, and the opinion of the Court of Appeal was
adverse in one point to the interpretation put on the Specification by my counsel,
and it was found that there was a claim for something that was not the subject
matters for a Patent, viz., for casting gas burners generally in metal moulds:
And whereas it was never my intention to make a claim for the manufacture of
burners of any other class than that described in the said Specification, I am
therefore desirous to limit my claim to the construction of such burners, and to
correct such inaccuracies of expression as will remove all obscurities from the
Specification; and to this end I hereby disclaim and strike out certain words in the
title of the Patent and in the said Specification, and make such amendments as
will render more clear and satisfactory the details of the description, that is to say,
I strike out from the title of the Patent the words "and in the method of construct-
"ing and manufacturing the same." In the Specification, at line 25, page 3, of the
printed copy, in order to make good an omission, I insert after the word "and" the
word" at." At line 28, after the word "or" I insert the word "at." And at line 32 I
strike out the words "by preference." At page 4, line 1, I strike out the commenc-
ing words "the improvements" and also "burners consist chiefly in," and I insert
in place thereof the words "improved burner, I prefer to adopt the following mode."
At the commencement of line 2 I insert the pronoun "I," and change "casting

page_text: into "cast," and "fixing" into "fix." At line 4 I strike out the word "and," and
insert the words "which are." At line 8 I alter the word "moulds" to "mould,"
and I make a similar alteration in line 9. In page 5, line 2, after the word "mode"
I insert "which I prefer." And at line 3, after the word "that" I strike out the
remainder of the line, also lines 4 and 5, and in line 6 the words "produced but."
At lines 8 and 9 I strike out the word "the" and the words "manufacturing and
means employed in making," when the title of the Patent and the Specification
will stand as follows:-Improvements in Gas Burners.
These improvements consist in the delivery of the gas into the chamber contain-
ing the aperture or apertures at which ignition takes place at a low velocity and at
a temperature exceeding that of a surrounding atmosphere as little as possible, and
in so arranging the sizes and shapes of the tubes or channels and orifices that the
gas shall issue at the point of ignition at an inappreciable or at the least possible
pressure. This is effected mainly by making the bore of the supply tubes or chan-
nels of such size that in the aggregate the area shall be less than the area of the
holes in the chamber or top, which is made of steatite, lava, porcelain, or other
incorrodible and nonconducting material, from which the gas, escapes and is burnt.
There is also an arrangement for regulating the quantity of gas admitted to the
steatite chamber by making the nose piece adjustable by means of a screw thereon,
and paper or other suitable washers, and forming an inverted cone in the inside of
the upper part of the inlet chamber of the burner.
In manufacturing the improved burner I prefer to adopt the following mode:-
I cast and fix together the principal parts constructed of metal at one, operation..
For this purpose iron, steel, brass, or other suitable metal moulds are fornied in
several pieces, which are fitted together with great exactitude, having in the interior
hollows corresponding in shape and thickness to the various parts of the burner.
The supply tubes are made of brass, steel, or other suitable substance, and are cut
in lengths and bent into forms to suit the hollows in the mould chased to receive
them. When they are placed in position the other parts of the mould are brought
together, and a mixture of tin, lead, and antimony, or other suitable metal or com-
pound in a melted state is then poured into the mould, filling up the insterstices
and joining together the supply tubes before mentioned. Upon separating the
mould the casting may be removed, aud requires but little "finishing" to fit it for
A thread must, however, be cut on the interior of the ring to receive the
screw of the stentite top, a gas-tight joint being effected by serving the screw with'
a little white lead or other cement, and making the interior edge of the top abut
upon a shoulder of the ring before alluded to, a paper card or other washer inter-
vening.
In order that the foregoing may be better understood Drawings are attached
hereto, a description of which is as follows:-
Fig. 1 is a section; Fig. 2, an elevation; and Fig. 3, a plan of the burner. In
the latter Figure, however, the glass or chimney is supposed to be removed.
In each illustration the same parts are indicated by the same letters of reference.
A, Fig. 1, is the nose piece or inlet for the gas, having a thread on its interior for
attachment to the fittings, and a thread on its exterior to connect it with the inlet
chamber B; C is the inverted cone by means of which, together with the paper
washers D, D, the size of the conduit formed between the nose piece and the
inverted cone may be regulated and adjusted; E, E, are the supply tubes; and F, F,
is the steatite chamber with its exit apertures at G, G, (shown more distinctly in
Fig. 3); H is the metal ring to which the top is connected, as before described;
I, I, is a cone to regulate the quantity of air to the exterior of the flame; and J is
the central aperture of the burner, which admits air to the interior surface of the
flame; K is a spring to uphold the glass chimney L; and M is a projection to sup-
port a globe or shade. The arrows indicate the direction of the gas.
Having now described and particularly set forth the nature of this Invention,
and the mode which I prefer of manufacturing the improved burner, I would observe
in conclusion that what I consider to be novel and original and therefore claim as

page_text: the Invention secured to me by the herein-before in part recited Letters Patent is,
constructing gas burners substantially as herein described.
In witness whereof, I, the said William Thomas Sugg, have hereunto set
my hand and seal, this Seventh day of April, in the year of our Lord
One thousand eight hundred and seventy-seven.
I hereby grant my fiat, giving leave to the above-named William Thomas
Sugg to file in the Great Seal Patent Office, with the Specification to which
the same relates, the above-written Disclaimer and Memorandum of Altera-
tion, subject to the conditions contained in an undertaking signed by him, dated
the Twentieth day of July, 1877, and annexed hereto.
:
JOHN HOLKER.
In the Matter of the Petition of WILLIAM THOMAS SUGG, of Vincent Works,
Vincent Street, in the City of, Westminster, for leave to file in the Great
Seal Patent Office a Disclaimer and Memorandum of Alteration upon
Letters Patent granted to him for the Invention of "IMPROVEMENTS IN
GAS BURNERS, AND IN THE METHOD OF CONSTRUCTING AND MANUFAC-
TURING THE SAME," dated the 18th day of March 1869, No. 831.
WHEREAS the above-mentioned Petition was referred to Her Majesty's Attorney-
General to consider what might be properly done therein :
And whereas the said Petition was opposed by Albert Marcius Silber, of 49,
Whitecross Street, in the City of London, and the case came on for hearing before
Her Majesty's said Attorney-General on the 23rd day of June, 1877. After hearing
counsel for the Petitioner and counsel for the Opponent, Her Majesty's said Attorney-
General decided to allow the Disclaimer and Memorandum of Alteration upon
certain conditions.
Now, therefore, in compliance with the conditions imposed by Her Majesty's
Attorney-General, I hereby undertake that I will bring no action against Mr.
Albert Marcius Silber or any other person in respect of any burners manufactured
under any contract between Mr. Silber and any maker of burners entered into prior
to the 23rd day of June, 1877.
Dated this 20th day of July, 1877.
WILLIAM T. SUGG.