Improvements in the Method of and Means for Cleansing or Removing Incrustation from the Interior of Steam Generators.
Year: 1899

page_text: Date of Application, 19th July, 1899
Complete Specification Left. 2nd Nov., 1899-Accepted, 10th Feb., 1900
Improvements in the Method of and Means for Cleansing or Removing
Incrustation from the Interior of Steam Generators.
:
I, WALTER JACKSON, of 284, Bury New Road, Whitefield, near Manchester, in
the County of Lancaster, Manufacturer of Boiler Composition, do hereby declare
the nature of this invention to be as follows:-
My said invention relates to improvements in the method of and means for
removing incrustation or scale, mud, and the like, from the interior of steam
generators.
As is well known the general
to blow off the water, enter the
objectionable and tedious task.
after the water has left tends to
removal a matter of difficulty.
course followed when removing incrustation, is
boiler and chip away such incrustation, a most
Moreover the presence of steam in the boiler
bake the incrustation on the shell rendering its
In working according to my invention I first allow the whole of the steam to
escape, leaving the water standing at a suitable level, and I then thoroughly swill
and scour out the interior of the boiler by means of jets of water delivered through
a convenient apparatus such water being fed under a suitable pressure by a force
pump or pumps, or the like.
Under one form of jet delivering apparatus which I have found suitable I
take a convenient length of metallic piping which is connected to the pump
delivery pipe (or a part attached thereto) in such a manner that it may be
revolved or turned if desired so as to alter the position of the delivery jets. The
lower end of this metallic piping is screwed or otherwise attached to a union
which carries two or more delivery jets such jets being so connected to the union
as to allow of their being revolved or turned by means of a suitable key or tool
and so permit of the water being delivered from the jets at varying angles.
When required for use this apparatus is introduced through say the top man-
hole, after the steam has been allowed to escape, and the water supply is turned
on, the apparatus being manipulated and handled so as to thoroughly scour out
the boiler. I make provision to allow the water to escape from the boiler at a
suitable rate.
I find that by allowing the steam to escape first and introducing a number of
jets of water into the interior of the steam generator containing the residue of
boiling water that incrustation is readily removed and the interior of the generator
very efficiently and economically cleansed.
1
1000

page_text: Improvements in the Method of and Means for Cleansing or Removing
Incrustation from the Interior of Steam Generators.
I, WALTER JACKSON, of 284, Bury New Road, Whitefield, near Manchester, in
the County of Lancaster, Manufacturer of Boiler Composition, 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 statement and
accompanying drawings:-
1. "
My said invention relates to improvements in the method of and means for
removing incrustation or scale, mud, and the like, from the interior of steam
generators.
As is well known the general
to blow off the water, enter the
objectionable and tedious task.
after the water has left tends to
removal a matter of difficulty.
course followed when removing incrustation, is
boiler and chip away such incrustation, a most
Moreover the presence of steam in the boiler
bake the incrustation on the shell rendering its
In working according to my invention I first allow the whole of the steam to
escape, leaving the water standing at a suitable level, and I then thoroughly swill
and scour out the interior of the boiler by means of a jet or jets of water
delivered through a convenient apparatus, such water being fed under a suitable
pressure.
My invention will be clearly understood from the following description when
read in conjunction with the annexed sheet of drawings.
In the said drawings.
Fig. 1 shows the jet delivering apparatus in position for work in a Lancashire
boiler.
Fig. 2 is a vertical section of Fig. 1.
Fig. 3 is an enlarged view, partly in section, of a form of double jet which I
have found specially suitable for my purpose.
In this form of jet delivering apparatus take a convenient length of metallic
tube or piping a, which is capable of being readily connected with the supply
pipe 6 in connection with the pump or other source of pressure, and I attach
thereto a union c which carries the jet pipes d d. The pipe a carries a ring or
collar a¹ which fits the interior of the union a² and is held in position by a gland as
bearing on the packing at. This construction of parts permits of revolution of
the pipe a and attached jets. The union c screwed to the lower end of the pipe a
carries the jets d, d, each jet being formed or provided with a flange or collar d'
and held in position by glands which press on packing rings &³. By the
insertion of a bar or tool in the key holes the position of the jets may be
altered so that the water can be discharged at various angles through the
nozzles d³.
When cleansing a boiler in accordance with my invention I first allow the
steam to escape the water being left standing at a suitable level, say just visible
in the gauge glasses, and I then introduce the jet delivery apparatus through the
top man bole as indicated in Figs. 1 and 2. Having got the apparatus into
position the water supply is next turned on and the jet delivery pipes d manipu-
lated so as to cool the water in the boiler after which they are turned so as to
thoroughly scour and cleanse the interior of the boiler the action of the discharged
water causing the scale to become detached and fall to the bottom.
The water in the boiler is allowed to escape at a suitable rate so as to permit
of the jets acting on all parts of the same.

page_text: When the scouring operation is completed the detached scale may be readily
removed through the mud hole door.
By setting the jet pipes d d in opposite directions the pipe a and attached jets
may be caused to revolve so as to discharge the water in a circular path.
I find that by allowing the steam to escape first and introducing jets of cold
water into the interior of the steam generator containing the residue of hot
water that incrustation is readily removed and the interior of the generator
very efficiently and economically cleansed.
In cases of severe incrustation several applications of the jet delivering
apparatus may be necessary but it will be found ultimately that the scale leaves
the plates and becomes detached.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:
1) The improved method of cleansing or removing incrustation and scale
from the interior of steam generators by first allowing the steam to escape and
then discharging a jet or jets of water under pressure within the generator
from a suitable jet delivering apparatus capable of being introduced into the
generator substantially as herein before described and shown.
2) As means for cleansing and removing incrustation from the interior of
steam generators the improved jet delivering apparatus having a revolvable
body a and delivery jets 6 capable of being set at various angles in the manner
and substantially as described and shown in Fig. 3.
Dated this 1st day of November 1899.
Dated this 1st day of November 1899.
For the Applicant,
E. K. DUTTON & Co.,
Chartered Patent Agents, 5, John Dalton Street, Manchester.