AN IMPROVED ARRANGEMENT OF GAS Box AND REVERSING GEAR APPLICABLE TO SIEMENS' REGENERATIVE GAS FURNACES.
Year: 1873

page_text: LETTERS PATENT to Francis Dixon Nuttall, of St. Helen's, in the
County of Lancaster, Glass Bottle Manufacturer, for the Invention
of "AN IMPROVED ARRANGEMENT OF GAS Box AND REVERSING GEAR
APPLICABLE TO SIEMENS' REGENERATIVE GAS FURNACES.'
"
Sealed the 5th May 1874, and dated the 7th November 1873.
PROVISIONAL SPECIFICATION left by the said Francis Dixon Nuttall
at the Office of the Commissioners of Patents, with his Petition, on
the 7th November 1873.
I, FRANCIS DIXON NUTTALL, of St. Helen's, in the County of
Lancaster, Glass Bottle Manufacturer, do hereby declare the nature of
the said Invention for "AN IMPROVED ARRANGEMENT OF GAS Box AND
REVERSING GEAR APPLICABLE TO SIEMENS' REGENERATIVE GAS FURNACES," to be
as follows:
This Invention has for its object to simplify the construction and
arrangement of the gas box, reversing gear, and shut-off valve used in
connection with Siemens' regenerative furnaces; it has also for its object
to provide means whereby access to the interior of the said gas box

page_text: and to the appliances contained therein shall be facilitated; and consists
in replacing the screw stop valve situate above the valve known as
the gas reversing valve, by a throttle valve in the passage to the gas box
at one side of the said gas reversing valve.
With gas box and reversing gear and stop valve arranged as above
described a door is placed above the gas reversing valve for inspection
and cleaning purposes, and the upper bearing of the throttle stop valve
is formed of part of the top of the gas passage. The said bearing is
sufficiently large to allow when detached of removal of the said throttle
stop valve.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Francis Dixon Nuttall in the Great Seal Patent
Office on the 7th May 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FRANCIS
DIXON NUTTALL, of St. Helen's, in the County of Lancaster, Glass
Bottle Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventh day of November, in the year
of our Lord One thousand eight hundred and seventy-three, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Francis Dixon Nuttall, Her
special licence that I, the said Francis Dixon Nuttall, my executors,
administrators, and assigns, or such others as I, the said Francis Dixon
Nuttall, 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
'AN IMPROVED ÅRRANGEMENT OF GAS BOX AND REVERSING GEAR APPLICABLE TO
SIEMENS' REGENERATIVE GAS FURNACES," upon the condition (amongst
others) that I, the said Francis Dixon Nuttall, my executors or adminis-
trators, 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,

page_text: 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 Francis Dixon Nuttall, 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 accompanying
Sheet of illustrative Drawings, and to the figures and letters marked
thereon, that is to say :-
This Invention has for its object to simplify the construction and
arrangement of the gas box, reversing gear, and shut-off valve used in
connection with Siemens' regenerative furnaces; it has also for its object
to provide means whereby access to the interior of the said gas box, and
to the appliances contained therein shall be facilitated, and consists
in replacing the screw stop valve situate above the valve known as the
gas reversing valve by a throttle valve in the passage to the gas box at
one side of the said gas reversing valve.
With gas box, reversing gear, and stop valve arranged as above
described, a door is placed above the gas reversing valve for inspection
and cleaning purposes, and the upper bearing of the throttle stop valve
is formed of part of the top of the gas passage. The said bearing is
sufficiently large to allow, when detached, removal of the said throttle
stop valve.

page_text: passages for cleaning and repairing; h, reversing valve; h¹, lever for
operating said valve; i, ¹, passages leading to regenerators and furnaces;
j, passage leading to the chimney.
As here illustrated the gas enters at a, passes in the direction of the
arrows through i to the regenerator and furnace in operation, thence
through the regenerator of the second furnace, in through i, and along
through to the chimney. By turning the valve k the passage of the
gas through the regenerators and furnaces is reversed. This arrangement
of apparatus may be applied to regenerative furnaces other than
Siemens'.
Having now described the nature of my said Invention and
particularized the same in such manner that others will be enabled to
carry my improvements into effect, I claim, the arrangement of valves,
passages, and doors, substantially as described and illustrated for the
purposes set forth.
In witness whereof, I, the said Francis Dixon Nuttall, have
hereunto set my hand and seal, the Fifth day of May, in the
year of our Lord One thousand eight hundred and seventy-
four.
FRANCIS DIXON NUTTALL. (L.S.)
In the presence of
JAMES JOHNSON,
Patent Office,
Clayton Square,
Liverpool.