Improvements in the Method of and Apparatus for Facilitating the Circulation of Water in Boilers
Year: 1895

page_text: Date of Application, 30th Apr, 1895
Complete Specification Left, 6th Jan, 1896-Accepted, 29th Feb, 1896
PROVISIONAL SPECIFICATION
Improvements in the Method of and Apparatus for Facilitating the
Circulation of Water in Boilers
We, WILLIAM ACKROYD JOHN WILLOUGHBY, and THOMAS HENRY
ACKROYD, of the Firm trading as Willoughby & Co, Limited, 15, Leeds Road
Bradford, in the County of York, Engineers, do hereby declare the nature of this
invention to be as follows
This invention has for its object the combination with boilers of an apparatus
arranged in such a manner that, the circulation of water in the boilers is more
effectual, the expansion in the boiler plates equalized, and the evaporative
efficiency of the boiler increased
We accomplish our object in the following manner The apparatus is par-
ticularly applicable to the class of boilers known as the Cornish or single flued and
the Lancashire or two flued internally fired boilers, and consists in placing one
large pipe of suitable diameter that will allow for cleaning out up each side of the
bottom flue, each pipe or range of pipes extending the length of the flue, and
coupled at one end to the front end plate of the boiler with a tap or valve
intei vening, the opposite end extending upwards through the flue to above the top
of the boiler and continued forward by pipes of suitable diameter into the crown
of the boiler, a safety valve and stop valve or tap being fixed in convenient
po itions
By arranging pipes in the manner described, they are full of water to the same
level as in the boiler, and the heated gases in the flues heat the water to such a
degree that steam is raised, which ascends up the pipes at the back end and
escapes into the boiler at the crown, thus by this combination, the water is
extracted from the bottom of the boiler where there is the least circulation and
converted into steam, thereby increasing the efficiency of the boiler and allowing
the pipes at the top and bottom to expand more equally and thus preserve and
increase the durability of the boiler
Dated this 20th day of April 1895
JOHN WAUGH,
Agent
CUDILI VIE DI MULTICATION
Improvements in the Method of and Apparatus for Facilitating the
Circulation of Water in Boilers
We, WILLIAM ACKROYD, JOHN WILLOUGHBY and THOMAS HENRY
ACKROYD, of the Firm trading as Willoughby & Co, Limited, 15 Leeds Road,
Bradford, in the County of York, Engineers, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
descubed and ascertained in and by the following statement
-y
This invention has for its object the combination with boilers, of an apparatus
arranged in such a manner that, the circulation of water in the boiler is more
effectual, the expansion in the plates equalized and the evaporative efficiency of
the boiler increased

page_text: We accomplish our object in the following manner The apparatus is par-
ticularly applicable to the class of boilers known as the Cornish or single flued
ind the Lancashire or two flued internally fired boiler, and consists in placing a
pipe of suitable diameter up each side of the bottom flue and coupling one end to
the front end plate of the boiler, the opposite end extending upwards through the
Hue to above the top of the boiler and continued forward by pipes of suitable
diameter into the crown of the bo ler
In order that our invention may be clearly understood we will describe the same
fully in detail by making reference to the accompanying sheet of drawings in
which
Fig 1 represents a longitudinal section of a Lancashire or two flued boiler
having our improved apparatus applied thereto
Fig 2 is a sectional plan of same
Fig 3 a front view, and
Fig 4 a cross section on line a b
At one or each side of the bottom flue A and attached to the boiler or suitably
mounted in any convenient manner, we place a pipe B of suitable diameter as will
admit of cleaning out, the said pipes B extending the whole length or for the
most part of the flue A and connected at one end to the front end plate C of the
boiler D by pipes E, and at the opposite ends by pipes F which, when two
pipes B are utilized, may be passed into the crown of the boiler separately, but by
preference are coupled at any convenient point, say at G as shewn and passed
Jointly into the boiler D
Upon opening the taps H water is allowed to pass from the bottom of the boiler
into the pipes B where it rises to a point J being the level of the water in the
boiler The gases in the bottom flue A heat the water in the pipes B whereby
steam is generated, which passes up the pipes F into the crown of the boiler By
these means a constant circulation is going on in the boiler, the water being taken
from the bottom of the boiler, which is naturally the coldest, is converted into
steam and returned to the boiler, whereby the efficiency of the boiler is increased,
the expansion of the top and bottom plates equalized, thus preseiving and increasing
the durability or the boiler
Fach pipe F is provided with a safety valve K, steam gauge L, and stop
valve M, but we make no claim to same as forming part of this invention
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim 18,
The combination with a boiler D of one or more pipes B inserted in the flues
and connected with the said boiler at one end below the water line, and at the
other into the steam space, all arranged substantially as shown and described
Dated this 3rd day of January 1896
JOHN WAUGH,
Agent