IMPROVEMENTS IN STEAM BOILERS AND IN SETTING THE SAME
Year: 1874

page_text: LETTERS PATENT to Thomas Ridley Oswald, Alfred Oswald, William
Rudd Oswald, and Frederick Hermann Weyergang, all of Sunder-
land, in the County of Durham, for the Invention of "IMPROVEMENTS
Scaled the 21st December 1874, and dated the 1st August 1874.
PROVISIONAL SPECIFICATION left by the said Thomas Ridley Oswald,
Alfred Oswald, William Rudd Oswald, and Frederick Hermann
Weyergang, at the Office of the Commissioners of Patents, with
their Petition, on the 1st August 1874.
We, -THOMAS RIDLEY OSWALD, ALFRED OSWALD, WILLIAM RUDD
OSWALD, and FREDERICK HERMANN WEYERGANG, all of Sunderland, in
the County of Durham, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN STEAM BOILERS AND IN SETTING THE SAME," to be as
follows:-
This Invention has for its object the improvement of boilers.
The boiler we construct is of a round form. fitted with small ſame

page_text: boilers. The boiler is fired underneath, externally, and has two separato
fires to cach boiler. The flame after leaving the furnace travels right
along underneath the boiler and returns to front of boiler from back
combustion chamber through the small tubes to the front combustion
chamber, from thence it travels along the side of the boiler to chimney 5
or uptake (or flue, which can be used for superlicating or feed heating
purposes by placing a vessel on the top of samo), or elsewhere at
pleasure. The boiler is supported by a brick or other wall running
along outside the centre of the boiler underneath, and is built in with
brick or other work at the sides, as shown in the Drawings hercunto 1
annexed.
3. Extreme simplicity of form and cheapness of manufacturo.
4. Great strength of form and greater pressure thus obtained.
5. Liability to prime is very much reduced.
6. Unequal expansion with its attendant evils entirely done away.
with.
7. All the advantages of the water-tube boiler without its dis- 2
advantages, that is, more heating surface is obtained with a maximum
amount of water surface and a large amount of steam and water storage
(unobtainable in the water-tube boiler), thus ensuring the most
economical advantages to be derived from a steam generator.
8. This boiler will be guaranteed to steam without the use of coal. It 2
will steam casily with sawdust, wood chips, shavings, &c. At a saw
mill or other place were wood is much worked this boiler will be found
invaluable.
This boiler will also steam with the waste ashes from blacksmiths'
fires, furnaces, and other waste ashes.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Ridley Oswald, Alfred Oswald, William
Rudd 'Oswald, and Frederick Hermann Weyergang, in the Great
Seal Patent Office on the 30th January 1875.
· TO ALL TO WHOM THESE PRESENTS SHALL COME, we, THOMAS
RIDLEY OSWALD, ALFRED OSWALD, WILLIAM RUDD OSWALD, and
FREDERICK HERMANN WEYERGANG, all of Sunderland, in the County of
Durham, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the First day of August, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
eighth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Thomas Ridley Oswald, Alfred Oswald,
William Rudd Oswald, and Frederick Hermann Weyergang, Her special*
license that we, the said Thomas Ridley Oswald, Alfred Oswald, William
Rudd Oswald, and Frederick Hermann Weyergang, our executors, admi-¨
nistrators, and assigns, or such others as we; the said Thomas Ridley
Oswald, Alfred Oswald, William Rudd Oswald, and Frederick Hermann;
Weyergang, our 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 Iroland, the Channel Islands, and Isle of Man, an
Invention for " IMPROVEMENTS IN STEAM BOILERS AND IN SETTING THE SAME,"
upon the condition (amongst others) that we, the said Thomas Ridley
Oswald, Alfred Oswald, William Rudd Oswald, and Frederick Hermann
Weyergang, our executors or administrators, by an instrument in writing
under our or their hands and seals, or under the hand and seal of ono.
of us or them, 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 we, the said Alfred Oswald and William Rudd
Oswald, on behalf of ourselves and the said Thomas Ridley Oswald and
Frederick Hermann Weyergang, do hereby declare the nature of the
said Invention, and in what manner the same is to be performed, to be

page_text: -
6. Unequal expansion with its attendant evils entirely done away.
with.
7. All the advantages of the water-tube boiler without its dis-
advantages, that is, more heating-surface is obtained with a maximum
amount of water surface and a large amount of steam and water storage
(unobtainable in the water-tube boiler), thus ensuring the most
economical advantages to be derived from a steam generator.
8. This boiler will produce a good supply of steam without the use
of coal, it will steam easily with sawdust, wood chips, shavings, &c. At
a saw mill or other place where wood is much worked this boiler will be
found invaluable. This boiler will also steam with the waste ashes from
blacksmiths' fires, furnaces, and other waste ashes.
Having thus described the nature of our Invention, and the manner
of performing the same, we would have it understood that what we
claim is, the combined construction and setting of steam boilers, sub-
stantially as herein described and shewn in the Drawings annexed.
In witness whereof, we, the said Alfred Oswald and William Rudd
Oswald, have hereunto set our hands and seals, this Twenty-
seventh day of January, in the year of our Lord One thousand
eight hundred and seventy-five.
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