IMPROVEMENTS IN PURIFYING WATER FOR STEAM BOILERS
Year: 1854

page_text: LETTERS PATENT to Charles Walker, of Bury, in the County of Lan-
.caster, Engineer, for the Invention of "IMPROVEMENTS IN PURIFYING WATER
FOR STEAM BOILERS."
Sealed the 17th August 1854, and dated the 23rd February 1854.
PROVISIONAL SPECIFICATION left by the said Charles Walker at the
Office of the Commissioners of Patents, with his Petition, on the 23rd
February 1854.
I, CHARLES WALKER, of Bury, in the County of Lancaster, Engineer, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN PURIFY-
ING WATER FOR STEAM BOILERS" to be as follows:-
My improvements in purifying water for steam boilers relates to an appa-
ratus, a Patent for which was granted to me on the 1st December 1852,
the Specification of which was duly enrolled. It will be seen from the
Drawings therein referred to, that the vessel supplied with the purifying
matter was suspended within the boiler, instead of which I now place this
vessel or chamber containing the purifying matters on the outside or top of the
boiler. From this vessel there is a pipe or tube carried down into the water
contained in the boiler; the pressure of the steam and agitation of the water
proceeding from ebullition causes the water to rise up the tube into the vessel
aforesaid, and effect the desired object in the manner described in my Patent
above named. A tap or valve may be used to cut off the communication
between the vessel and the tube.

page_text: means of the standards c, and is provided with a man-way d, for the purpose
of introducing the purifying matter into the interior, or to allow of the same
being at any time cleaned out before a fresh charge is made. The com-
munication between the purifying matter in the vessel aforesaid and the water
contained in the boiler is effected by means of the pipe e passing through the
boiler and water to within a short distance of the lowest part of it. This
pipe e is provided with a tap or valve f, and is terminated at its upper end by
a perforated rose g, which prevents any large portions of the purifying substance
descending into the boiler. There is also another pipe h having a tap i, which
opens a communication between the steam in the boiler and the top of the
purifying matter in the chamber or vessel above mentioned. The purifying
substances to be used as zinc, turf, bark, or any other matters known to prevent
incrustation, are placed in the vessel a, when the man-way d is closed, and the
tap in the pipe e now opened. The pressure of steam in the boiler, and the
agitation of the water proceeding from ebulition, will cause it to rise into the
chamber a, and effect the desired object, or the tap in the pipe h may be opened
for the admission of the steam, when a constant circulation of the water in the
boiler through the purifying substance will be produced, and by this means
effect the desired purpose.
Having thus described and ascertained the nature of my Invention, and the
manner in which the same may be performed, I desire it to be understood
that I do not intend to confine myself to the size of and position in which the
apparatus is fixed, as the same may be varied to a considerable extent; but
that which I claim as secured to me under the above in part recited Letters
Patent is, the adaptation of a vessel placed in any convenient position
having communication with the water in the boiler for the purpose set forth
above.
In witness whereof, I, the said Charles Walker, have hereunto set my
hand and seal, this Twenty-second day of August, One thousand eight
hundred and fifty-four.
CHARLES WALKER. (L.S.)