Passages Appertaining to Steam and other Boilers.
Year: 1888

page_text: Date of Application, 4th Aug., 1888
Complete Specification Left, 13th Apr., 1889
Complete Specification Accepted, 8th June, 1889
Passages Appertaining to Steam and other Boilers.
I, JAMES ELLIS, of Gun Iron Works, Gun Square, Houndsditch, in the City of
London, Engineer, do hereby declare the nature of this invention to be as follows:-
The object of my invention is to prevent the fouling or choking of the tubes or
pipes nsed for conveying the feed water into steam or other boilers, and thereby avoid
the great loss of power, tendency to burst the pipes, and deterioration of the pump
or other apparatus, that occurs when the feed water orifices become choked and
contracted by the deposit of scale or saline matter.
In carrying out my Invention I employ a casting, or equivalent, similar to the
body or shell of an ordinary stop valve, and provided with flange attachments or other
suitable provision made for attaching same to the front, or other part of a steam
boiler, and also for connecting the feed pipe thereto. Said flanges, or other method
of coupling or connecting may be placed at right angles or at any suitable angle to
each other, to suit various conditions of application, but in all cases, the orifice and
connection for attachment to the boiler is arranged concentrically with the spindle of
the apparatus according to my Invention. Said spindle passes through a gland and
stuffing box attached to, or formed upon the body or shell, and may be depressed
by a band wheel and screw, or a lever, in either case allowing of free manipulation
from the outside of the boiler. To the lower end of said spindle I attach a scraper
of any suitable form, with two or more scraping edges, which fit freely within the tube
or passage leading into the boiler, and may be revolved within, and pressed through
said tube or passage by the action of the handwheel or lever aforesaid, or any other
suitable device for obtaining a circular and advancing motion. Said scraper is fluted,
or channelled in such a manner as to allow free passage to the feed water when
the scraper is depressed into the tube or passage as before described. I do not
confine myself to any particular form of scraper, so that two or more scraping edges
are presented to the inner surface of the tube or passage, and sufficient open space
is provided through said scraper for the feed water. Between the scraper and the

page_text: upper wall of the body or shell, I attach to or form upon the spindle a collar, with a
true face, and provided with a washer or ring of india rubber, or other resilient
material, and a corresponding true face is formed upon the inner part of the upper
wall of said body or shell, so that when the scraper is raised out of the orifice of the
passage or tube before mentioned, said washer is compressed between the collar and
the wall, which allows the stuffing box to be re-packed, and the gland to be removed
or adjusted without leakage, and said collar also acts as a stop to prevent the scraper
from being withdrawn to a greater extent than is necessary from the passage
or tube.
I may use the apparatus according to my Invention in connection with a separato
check valve of any suitable construction, said check valve being placed upon the feed
side of said apparatus, or I may combine a check valve with the same, forming a
single casting, or composite castings as may be convenient.
That portion of an ordinary feed pipe wherein the fouling or choking has been
found by experience to be greatest, and most detrimental to the proper injection of
feed water into the boiler, is in immediate proximity to the boiler, therefore, by the
adoption of my Invention, the attendant way from time to time remove the incipient
formation of scale, by causing the scraper to pass through the passage or tube, and
project slightly beyond the interior edge of the boiler plate, in the manner herein-
before described.
Datad this 4th of A _1000
FREDK. WALKER & HYDE,
4, Little Moorfields, London, E.C.,
Agents for Applicant.

page_text: Passages Appertaining to Steam and other Boilers.
I, JAMES ELLIS, of Gun Iron Works, Gun Square, Houndsditch, in the city of
London, Engineer do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following stateinent :-
-
The object of my invention is to prevent the fouling or choking of the tubes or
pipes used for conveying the feed water into steam or other boilers, and thereby to
minimise the risk of bursting the pipes or tubes aforesaid, and also to obviate the
great loss of power, and consequent deterioration of the pumps or other source of feed
water, that occurs when the feed water orifices become choked or contracted by the
deposition of scale, saline or earthy matter.
In order that my invention may be better understood, I have appended the accom-
panying sheet of drrwings, in which Figure 1 represents a longitudinal section of the
device or contrivance according to my said invention, and Figure 2 is an external
elevational view thereof; Figures 3 and 4. are upper and lower plan views of the
same, respectively; and Figures 5 and 6 are details appertaining thereto, hereinafter
to be fully described and referred to.
In carrying my invention into effect I employ a casting A, Figures 1 and 2, which
is similar in shape to the body or shell of an ordinary stop valve, and is provided
with a flange B, or an equivalent device for the purpose of attaching the appliance to
a boiler. A socket C, suitably screwed, is formed upon the body or shell A, for the
reception of the end of the feed pipe, or I may in other cases make use of an
exteriorily screwed nipple, or a flange, for making a steam and fluid-tight joint, in
lieu of the screwed socket (shewn in the drawing. A cap D, fitted to the body or
shell A, and provided with a suitable stuffing box and gland E, for compressing the
packing F; carries a spindle G, which is operated by means of a hand-wheel or other
suitable device H. A screw thread I, preferably a square thread, formed upon the
spindle G, and engages with the female thread corresponding thereto, which is formed
in the bore of the cap D). By this arrangement, the rotation of the hand wheel H
causes the spindle G to advance or recede according to the direction of rotation. A
metal cutter J, shewn more particularly by the cross section Figure 6, is attached to
the end of the spindle G, so that the cutting edges thereof may clear the orifice
leading into the boiler when the hand-wheel or equivalent H is turned so as to cause
the advance of said spindle. I do not confine myself to the employment of the
formation of said scraper or cutter shewn by the cross section Figure 6, I may,
instead thereof, make use of a scraper or cutter with double edges, as shewn at K,
Figure 3, or of any other shape or configuration that will enable the device or con-
trivance according to my invention to fulfil the purpose for which it is intended to
be used.
In order to allow of the removal of the gland E, for the renewal of the packing F
while steam pressure exists in the interior of the shell or body A, I provide a
collar L attached to, or formed upon the spindle G, so that when said spindle G
is turned so as to be withdrawn, the collar L may press against the projecting fillet O,
which practically forms a seating therefor, and so prevent the emission of steam or

page_text: fluid during the repacking of the gland E. To ensure a perfectly steam and fluid
tight joint between said collar L and the face or fillet O, I may employ a washer N
shewn in the sectional view of the collar L by Figure 5, said washer being a
disc of vulcanized india rubber, leather, asbestos, or any resilient material or sub-
stance that may be suitable for the purpose. A cap M, arranged so as to be screwed
upon, or otherwise attached to, the collar L serves to hold the washer or disc N
in position, so that, under compression, the contact between it and the face or fillet O
may be maintained perfectly steam and fluid tight.
It is well known to all persons who are practically acquainted with the manipula-
tion and working of boilers; that the injection of feed water, (which in the cases
where pumps are employed, is necessarily of a lower degree of temperature than
that of the water contained in the boiler) causes the precipitation of the saline or
earthy matter previously held in solution. This, continually occurring at a certain
point, viz. the orifice of the feed pipe, causes the encrustation to take place so
rapidly as to nearly close the orifice above referred to, thus, by diminishing the area
of the injection or feed passage, a greater load is imposed upon the feed pumps,
and the quantity of feed is materially reduced, entailing a waste of power, and
increasing the risk of explosion and damage by reason of an insufficient water supply.
By the adoption of the device or contrivance according to my invention, the
occasional rotation of the hand wheel enables the orifice to be kept clear, and even
in cases where, by inadvertence or otherwise the cutter or scraper be left in such
a position as to be within the feed or injection passage, I provide between the
wings or cutting edges, sufficient space to prevent-back-pressure, by allowing a free
passage for the water. I may either use the apparatus as above described in conjunc-
tion with an ordinary check or non-return valve, or I may so construct the casting
forming the shell or body A, that a suitable seating and valve chamber may-be-
included therein, to act as a check or non-return valve.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is ;
First. The apparatus for cleaning the feed water passages appertaining to steam
and other boilers, substantially as herein describer and set forth.
Second. In an apparatus for cleaning the feed water passages of steam or other
boilers as referred to in the preceding claim, the employment of a collar L Figures
and 5, seating or fillet O, washer or disc N and screwed cap M, substantially as and
for the purposes herein before described, with reference to the accompanying sheet of
drawings.
Third. In an apparatus for cleaning the feed water passages of boilers, as above
referred to, the employment and application of a scraper or cutter J Figure 1 and 6
with one or more scraping or cutting edges, arranged to cut or scrape in one
direction, or in both directions, as shewn by K Figure 3, substantially as and for the
purposes herein described and set forth.
Dated this 12th day of April 1889.
FREDK. WALKER & HYDE,
4, Little Moorfields, London, E.C.,
Agents for the Applicant.