IMPROVEMENTS IN APparatus FOR WITHDRAWING WATER FROM PIPES HEATED BY STEAM, AND IN ARRANGE- MENTS IN CONNECTION THEREWITH
Year: 1873

page_text: LETTERS PATENT to Edward Worroll, of Saddleworth, in the County of
York, Plumber, for the Invention of " IMPROVEMENTS IN APparatus
FOR WITHDRAWING WATER FROM PIPES HEATED BY STEAM, AND IN ARRANGE-
MENTS IN CONNECTION THEREWITH."
Sealed the 27th February 1874, and dated the 4th September 1878.
PROVISIONAL SPECIFICATION left by the said Edward Worroll at the
Office of the Commissioners of Patents, with his Petition, on the
4th September 1878.
I, EDWARD WORROLL, of Saddleworth, in the County of York,
Plumber, do hereby declare the nature of the said Invention for
" IMPROVEMENTS IN APPARATUS FOR WITHDRAWING WATER FROM PIPES HEATED
BY STEAM AND IN. ARRANGEMENTS IN CONNECTION THEREWITH," to be as
follows:-
My Invention relates to apparatus employed in the heating or warming
by means of steam of mills, stoving rooms, or other buildings or erections,
and has for its object to cause the hot water arising from the condensa-
tion of steam in the heating pipes to be returned by "self-acting" means

page_text: "
to the boiler or boilers. For this purpose I connect a " steam trap
with the range or with each range of heating pipes, the said pipes being
so arranged, as that the water produced in each range shall gravitate
towards the said steam trap.
The said steam trap or each steam trap is a modification of a well- 5
known form of the apparatus in which a passage for the escape of water
is opened by the contraction of a length of tube, and is closed again by
the expansion thereof.
The steam trap I employ is formed with a second passage, which
remains open and leads to a back pressure valve, which is on a return 1
pipe or tube, or on a pipe or tube in connection with a return pipe
which conveys
the hot water to the boiler or boilers. The said steam
trap or each steam trap is so proportioned and adjusted as that any
comparatively cold water which may accumulate in the heating pipes is
permitted to escape as in the ordinary steam trap, whereas the escape of 1
hot water in the same manner is prevented, and the said hot water
is permitted to flow through the aforesaid back pressure valve, and
through the return pipe or tube to the boiler.
my apply one of the said steam traps and a back pressure valve at
or near the end of the return pipe which is nearest to the boiler or 2
boilers, and in some cases I may apply a steam trap in this position
only.
In some cases I may dispense with the said steam traps, and substitute
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Edward Worroll in the Great Seal Patent Office
on the 4th March 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDWARD
WORROLL, of Saddleworth, in the County of York, Plumber, send 3
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her

page_text: of our Lord One thousand eight hundred and seventy-three, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Edward Worroll, Her
special license that I, the said Edward Worroll, my executors, admi-
nistrators, and assigns, or such others as I, the said Edward Worroll,
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
"IMPROVEMENTS IN APPARATUS FOR WITHDRAWING WATER FROM PIPES HEATED BY
STEAM, AND IN ARRANGEMENTS IN CONNECTION THEREWITH," upon the condition
(amongst others) that I, the said Edward Worroll, by an instrument
in writing under my hand and seal, 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 Edward Worroll, do hereby
declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement (and accompanying Drawings), that is.
to say :-
My Invention relates to the heating or warming by means of steam of
mills, stoving rooms, or other buildings or erections, and has for its
object to cause the hot water arising from the condensation of steam in
the heating pipes to be returned by "self-acting" means to the boiler or
boilers. For this purpose I connect a "steam trap" with the range or
with each range of heating pipes, the said pipes being so arranged as
that the water produced in each range shall gravitate towards the said
" steam trap."
The said steam trap or each "steam trap" is a modification of a well-
known form of the apparatus, in which a passage for the escape of water
is opened by the contraction of a length of tube, and is closed again by¨*
the expansion thereof.
The steam trap I employ is formed with a second passage which
remains open and leads to a back pressure valve, which is on a return

page_text: pipe or tube, or on a pipe or tube in connection with a return pipe
which conveys the hot water to the boiler or boilers. The said steam
trap or each steam trap is so proportioned and adjusted as that any com-
paratively cold water which may accumulate in the heating pipes is
permitted to escape as in the ordinary steam trap, whereas the escape of 5
hot water in the same manner is prevented, and the said hot water is
permitted to flow through the aforesaid back pressure valve and through
the return pipe or tube to the boiler.
And in order that my Invention may be fully understood I will now
refer to the Sheet of Drawings which I have furnished to accompany 1
this Specification, and which are marked with letters of reference, cor-
responding marks indicating the same parts in the various Figures.
Fig. 1 represents a vertical section of a portion of a building with my
Invention applied thereto, Fig. 2 representing a plan of one of the rooms
in the said building, the said Figures being drawn to a scale of about 1
one-half of an inch to the foot.
In the said Figs. a, a, are the improved steam traps, one of which
is represented in longitudinal section, drawn to a larger scale at Fig. 3.
In the last named Figure the body a of the trap is secured to one end of
a bar b, and is formed with a gland, in which one end of the tube o is
fitted to slide, the other end of the said tube being secured by the lock
nuts d to the other end of the bar b. The inner end of the tube o is
formed to fit against a seating e, which is screwed into the body a, and
is connected with a back pressure valve f. The tube c is so adjusted
with relation to the said seating by means of the lock nuts d as that a
there shall be a passage between the said tube and the said seating for
the flow of cold or comparatively cold water to the waste pipe g, and
that the expansion of the said tube shall effect the closing of the said
passage when hot water or steam is flowing through or occupies the said
tube.
pressure
In Figs. 1 and 2 h is a pipe through which steam is supplied to the
heating or warming pipes i, i, and 9, 9, are the cold or waste water pipes,
I being the hot water piping, which is connected with the back
valves. The supply of steam to each range of heating pipes is regulated
by means of a valve 1. When steam is admitted into the cold or com-
paratively cold pipes cold or comparatively cold water results from the
condensation of the steam, and such water is permitted to flow through

page_text: the piping g, and may either be run to waste or be utilised for any
suitable purpose. When the said heating pipes have attained their
ordinary working temperature or thereabouts, the expansion of the tubes c
will have closed the passage into the piping 9, and the hot water from
the said heating pipes is then compelled to flow onwards through the
back pressure valve into the piping k, which conveys the said water
into the boiler at m, or at any other point, as may be desired.
I may apply an additional steam trap of the kind herein described to
the piping kat a point near to the boiler, and in some cases a single
steam trap so applied will be sufficient, as for example, in cases wherein
there is only one range of heating pipes.
Having now fully described and indicated the nature of my said
Invention, I would in conclusion have it to be distinctly understood that
I do not confine myself to the particular arrangement of the piping as
represented in my Drawings, but that I claim,-
First. The employment of the steam trap formed and acting substan-
tially as and for the purpose set forth and indicated herein-before, and in
the accompanying Drawings.
And, lastly. The method of applying the said steam trap to effect the
return of hot water to the boiler, substantially as heroin set forth and
indianted
the accompanying Drawings.
And, lastly. The method of applying the said steam trap to effect the
return of hot water to the boiler, substantially as heroin set forth and
indicated
In witness whereof, I, the said Edward Worroll, have hereunto set
my hand and seal, this Third day of March, in the year of our Lord
One thousand eight hundred and seventy-four.
return OF HOL water
indicated
LATESTA TRAIN STATION ATT
MATAM
NON HA TOT CON
In witness whereof, I, the said Edward Worroll, have hereunto set
my hand and seal, this Third day of March, in the year of our Lord
One thousand eight hundred and seventy-four.
Signed and sealed by the said
Edward Worroll in the
presence of
EDWARD K. DUTTON,
Agent to the Patentee,
8, Princess Street,
EDWARD WORROLL. (L.S.)
}
Manchester.