IMPROVED APPARATUS FOR UTILIZING EXHAUST STEAM
Year: 1873

page_text: LETTERS PATENT to Matthew Todd (of the Firm of John Todd and
Sons), of Bradford, in the County of York, Wool Comber, for the
Invention of "IMPROVED APPARATUS FOR UTILIZING EXHAUST STEAM."
Sealed the 5th June 1874, and dated the 9th December 1873.
PROVISIONAL SPECIFICATION left by the said Matthew Todd at the
Office of the Commissioners of Patents, with his Petition, on the
9th December 1873.
I, MATTHEW TODD (of the Firm of John Todd and Sons), of Bradford,
in the County of York, Wool Comber, do hereby declare the nature
of the said Invention for "IMPROVED APPARATUS FOR UTILIZING EXHAUST
STEAM," to be as follows:
-
This Invention has for its object the construction of a more economical
and efficient apparatus for utilizing the waste or exhaust steam during
its passage from the cylinder to the condenser, and so facilitate condensa-
tion, and at the same time heat water for boiler supply, or for other
purposes.

page_text: I employ a chest or casing placed as usual between the cylinder or
cylinders of the engine and the condenser, there being the necessary
entrance and exit ways provided for the steam, and within the said chest
or casing I employ a double or single worm, or coiled pipe or pipes (by
preference of copper through which worm or worms the water intended for
feeding the boiler, wool washing, or other purposes circulates, having thus
to circulate through a considerable length of heated pipe before reaching
the exit end of the coil or coils, and this extended circulation the worm
or worms gives without requiring a large enclosing chest or casing, the
exhaust steam being, during its passage through the chest or casing,
within a comparitively small space, is more completely utilized.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Matthew Todd in the Great Scal Patent Office,
on the 9th June 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MATTHEW
TODD (of the Firm of John Todd and Sons, of Bradford, in the County
of York, Wool Combers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of December, 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 Matthew Todd, Her special
licence that I, the said Matthew Todd, my executors, administrators,
and assigns, or such others as I, the said Matthew Todd, 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 "IMPROVED APPARATUS
FOR UTILIZING EXHAUST STEAM," upon the condition (amongst others) that I,
the said Matthew Todd, 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
`n what manner the same was to be performed, and cause the same to

page_text: and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Matthew Todd, 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 (that is to say) :-
This Invention has for its object the construction of a more economical
and efficient apparatus for utilizing the waste or exhaust steam during
its passage from the cylinder to the condenser, and so facilitate con-
densation and at the same time heat water for boiler supply or for other
purposes.
I employ a chest or casing placed as usual between the cylinder or
cylinders of the engine and the condenser, there being the necessary
entrance and exit ways provided for the steam, and within the said chest
or casing I employ a double or single worm or coiled pipe or pipes (by.
preference of copper) through which worm or worms the water intended
for feeding the boiler, wool washing, or other purposes, circulates, having
thus to pass through or along a considerable length of heated pipe before
reaching the exit end of the coil or coils, and this extended circulation
the worm or worms give without requiring a large enclosing chest or
casing, the exhaust steam being during its passage through the chest or
casing within a comparatively small space is more completely utilized.
Such being the nature and object of this my said Invention I will
now proceed to describe the same in detail, and in order that the same
may be clearly understood I have hereunto annexed a Sheet of Drawings
illustrative thereof, and have marked the same with fig. and letters of
reference.
The Drawings shew a single coil or worm within its enclosing chest or
casing, the latter being in section; at A is shewn the chest or casing
placed in any convenient position between the cylinder or cylinders of
the engine and the condenser B; at C is shewn the entrance way for
the steam; D is the worm or coil, through which the water to be heated
for feeding the boiler, wool washing, or other purposes, circulates, and it
will be seen that as the cold water is fed to the said worm or coil
through the entrance E, and its exit way being at F, that such form of
heater has a large heating surface compared with its size, and that an

page_text: extended circulation is secured; at G is shewn entrance way for cold
water for supplying condenser.
Although I have shewn in the Drawings a single coil, it will be evident
that the coil may be double, that is to say, a coil within a coil.
Having thus fully described the nature and particulars of this my said
Invention, together with the manner in which the same is to be or may
be performed or carried into practical effect, I would have it understood
that what I claim as my Invention is, the application and use of
worm or coiled pipes for heating water by the exhaust steam as herein
fully explained and illustrated by Drawings.
In witness whereof, I, the said Matthew Todd, have hereunto
set my hand and seal, this Fifth day of June, in the year of
our Lord One thousand eight hundred and seventy-four.
Witness,
WALTER BRIERLEY,
Tasker & Brierley,
Patent Agents,
MATT. TODD. (L.S.)
Halifax, Bradford, Blackburn.