IMPROVEMENTS IN UTILIZING WASTE HEAT."
Year: 1875

page_text: LETTERS PATENT to John Stirling and Thomas Peacock, both of Coat-
bridge, in the County of Lanark, North Britain, for the Inven-
tion of "IMPROVEMENTS IN UTILIZING WASTE HEAT."
PROVISIONAL SECIFICATION left by the said John Stirling and
Thomas Peacock at the Office of the Commissioners of Patents,
with their Petition, on the 2nd October 1875.
We, JOHN STIRLING and THOMAS PEACOCK, both of Coatbridge, in the
County of Lanark, North Britain, do hereby declare the nature of the
said Invention of "IMPROVEMENTS IN UTILIZING WASTE HEAT," to be as
follows, that is to say :—
This Invention relates to improvements in utilizing waste heat. It
consists in the adaptation to the flues of furnaces generally, and par-
ticularly to those from which the waste products of combustion pass off
in a highly heated state, of one or more retorts, around which the waste
heated products of combustion flow. The retorts are charged with coal,

page_text: shale, or other carbonaceous substances capable of evolving combustible
gas, and the gas so produced is conveyed by one or more flues back into
the furnace near to or above the bridge and there burnt, or it may be
burnt in another furnace.
The retort is emptied of its coked contents from time to time, and this
is cooled preferably by being discharged into water.
shale, or other carbonaceous substances capable of evolving combustible
gas, and the gas so produced is conveyed by one or more flues back into
the furnace near to or above the bridge and there burnt, or it may be
burnt in another furnace.
The retort is emptied of its coked contents from time to time, and this
is cooled preferably by being discharged into water.
Hot air may also be admitted to the furnace wherein the gases aro
burnt, this being supplied by pipes passing in or through the retort
flues.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Stirling and Thomas Peacock in the Great
Seal Patent Office on the 13th March 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
STIRLING and THOMAS PEACOCK, both of Coatbridge, in the County
of Lanark, North Britain, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Second day of October, in the year
of our Lord One thousand cight hundred and seventy-five, in the
39th year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said John Stirling and Thomas Peacock,
Her special license that we, the said John Stirling and Thomas Peacock,
our executors, administrators, and assigns, or such others as we, the said
John Stirling and Thomas Peacock, our executors, administrators, or
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 UTILIZING WASTE
HEAT," upon the condition (amongst others) that we, John Stirling and
Thomas Peacock, by an instrument in writing under our 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.

page_text: or more retorts with a furnace, so that the waste heat of the furnace
distils substances contained in the retort, and heats the air or a part
thereof burnt in the furnace, the gases from the retort being returned
to the fire-chamber or above the bridge, or burnt in other furnaces, sub-
stantially as herein-before described and shown upon the annexed Sheet
of Drawings.
In witness whereof, I, the said Thomas Peacock, on behalf of
myself and the said John Stirling, have hereunto set my hand
and seal, this Seventh day of October, One thousand eight
hundred and seventy-five..