IMPROVEMENTS IN APPARATUS FOR THE PREVENTION OF PRIMING IN STEAM BOILERS
Year: 1875

page_text: LETTERS PATENT to Joseph Stockley, of Sunderland, in the County
of Durham, Engineer, for the Invention of IMPROVEMENTS IN
APPARATUS FOR THE PREVENTION OF PRIMING IN STEAM BOILERS."
Scaled the 9th April 1875, and dated the 30th January 1875.
PROVISIONAL SPECIFICATION left by the said Joseph Stockley at the
Office of the Commissioners of Patents, with his Petition, on the
30th January 1875.
I, JOSEPH STOCKLEY, of Sunderland, in the County of Durham,
Engineer, do hereby declare the nature of the said Invention for
" IMPROVEMENTS IN APPARATUS FOR THE PREVENTION OF PRIMING IN STEAM
BOILERS," to be as follows:-
My Invention has reference to improvements in apparatus represented
and described in the Specification of a Patent granted to me and another
bearing date 9th October 1871, No. 2666, and consists in the means

page_text: herein-after stated by which the steam and water in passing from the
boiler to the engine are more effectually separated by increased cen-
trifugal action. For this purpose, instead of only two webs or dividing
plates, each with a half turn (as described in the said Specification) six
or more webs or dividing plates each with a full turn are employed,
and there is a space formed above the tops of the webs or dividing plates
whereinto the steam from the boiler enters, being caused by the inter-
position of a stop to pass into the said space, and thence downwards
between the webs or dividing plates. The mixed steam and water will
by this means be subjected to violent centrifugal action in its course
downwards, whereby the steam and water will become more effectually
separated than heretofore, the water being returned to the boiler, and
the separated steam being supplied to the engine as required.
It is preferred to form the casting which is over the pipe leading to
the boiler with a swell corresponding with the curvature of the webs or
dividing plates, whereby the separated water will be caused to pass with
a twirling motion down the sides of the casting and down the pipe
leading to the boiler.
•
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Joseph Stockley in the Great Seal Patent Office 2
on the 30th July 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSEPHI
STOCKLEY, of Sunderland, in the County of Durham, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her 2
Letters Patent, bearing date the Thirtieth day of January, in the
year of our Lord One thousand eight hundred and seventy-five, in the
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Joseph Stockley, Her
special licence that I, the said Joseph. Stockley, my executors, admi- 3
nistrators, and assigns, or such others as I, the said Joseph Stockley,
my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times, thereafter

page_text: :
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 THE PREVENTION OF PRIMING IN STEAM
BOILERS," upon the condition (amongst others) that I, the said Josephi
Stockley, 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 in what
manner the same was to be performed, and cause the same to be filed
in the Great Scal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Joseph Stockley, 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 Drawings here-
unto annexed and to the letters and figures marked thereon (that is to
say):
My Invention of "Improvements in Apparatus for the Prevention of
Priming in Steam Boilers" has reference to improvements in apparatus
represented and described in the Specification of a Patent granted to me
and another bearing date Ninth October One thousand eight hundred
and seventy-one, No. 2666, and consists in the means herein-after stated
by which the steam and water in passing from the boiler to the engine
are more effectually separated by increased centrifugal action. For this
purpose, instead of only two webs or dividing plates, cacli with a half
turn (as described in the said Specification) six or more webs or dividing
plates cach with a full turn are employed, and there is a space formed
above the tops of the webs or dividing plates whereinto the steam from
the boiler enters, being caused by the interposition of a stop to pass into
the said space, and thence downwards between the webs or dividing
plates. The mixed steam and water will.by this means be subjected to
violent centrifugal action in its course downwards, whereby the steam
and water will become more effectually separated than heretofore, the
water being returned to the boiler, and the separated steam being
supplied to the engine as required.
"
=
It is preferred to form the casting which is over the pipe leading to
the boiler with a swell corresponding or nearly so, with the curvature of

page_text: the webs or dividing plates, whereby the separated water will be caused
to pass with a twirling motion down the sides of the casting and down
the pipe leading to the boiler.
Having thus stated the nature of the said Invention I will proceed to
describe more particularly in what manner the same is to be performed
by the aid of the accompanying Drawings, in which is represented the
apparatus above referred to as applied to a steam boiler.
Fig. 1 is a vertical section of the apparatus, and Fig. 2 is a horizontal
section of the same in the line a, b, of Fig. 1.
A is the steam dome of a boiler, to which is fitted the case or pipe B, C,
within which are contained six webs or dividing plates D, D, each making
a full turn; E is a space above the tops of the webs or dividing plates to
receive the steam as it enters from the dome; F is a stop placed so as to
prevent the steam issuing from the dome from passing otherwise than
into the space E. The case or pipe C is formed at C* with a swell
corresponding with the curvature of the webs or dividing plates D, D.
The case or pipe C communicates at its lower part with the pipe G
leading to the boiler, and at its upper part with the stop valve H leading
to the engine.
The communication with the engine may be formed either with a bend
or a stop valve, as shewn. The mixed water and steam from the dome A
enters the case or pipe at B, where it meets the stop F, and is caused to
pass into the space E, whence it passes down the annular spiral spaces
between the webs or dividing plates D, D, by which means the steam
and water being subjected to violent centrifugal action in its course
downwards will become effectually separated, the water from its density
and downward momentum being caused to pass down the case or pipe C
(as shewn by the arrows) and through the pipe G into the boiler, while
the steam will be free to pass upwards (as shown by the arrows), and
through the stop valve H to the engine.
Having thus described the nature of the said Invention, and in what
manner the same is to be performed, I hereby declare that what I claim
as of my Invention is, the combination for the purpose described of six or

page_text: more webs or dividing plates (each with a full turn) with a space above
them leading into the annular spiral spaces, and a stop interposed in the.
manner and for the purpose described.
In witness whereof, I, the said Joseph Stockley, have hereunto set
my hand and seal, the Twenty-sixth day of July, in the year of
our Lord One thousand eight hundred and seventy-five.
Witness,
T. C. WAKE,
Clerk,
Hetton Coal Fitting Offices,
Sunderland.
JOSEPH STOCKLEY. (L.S.)