Improvements in and Appertaining to Boilers for Generating Steam or similar other Purposes.
Year: 1889

page_text: Date of Application, 6th Mar., 1889
Complete Specification Left, 10th Oct., 1889-Accepted, 16th Nov., 1889
PROVISIONAL SPECIFICATION.
Improvements in and Appertaining to Boilers for Generating Steam
or similar other Purposes.
We, CHARLES JOSEPH SEAMAN of 19 Wellington Street, Stockton-on-Tees in the
County of Durham, Engineer and Merchant, and HENRY ROBERTS of Mytholmes,
Haworth near Keighley in the County of York, Engineer, do hereby declare the
nature of this invention to be as follows, that is to say :-
It relates to improvements in and appertaining to boilers for generating steam
or similar other purposes, and consists of constructing and arranging certain parts
through which the water, entering said boilers, will have to pass in such a manner
that the temperature thereof on its arrival within the boiler will be considerably
enhanced and by these said improvements certain parts are rendered more durable
than heretofore.
This is attained by forming a cavity to encircle one portion of the upper outer edge
of the fire box, as also to extend across the front outer edge of the bars forming the
fire grate, this latter cavity being formed somewhat double so that when the feed
pipe is coupled thereto in a proper position, the water is made to pass along one
portion of this latter cavity forwards while it will return along the other and then
pass over the upper outer edge of the fire box through the remaining portion of the
cavity above described, from whence it may be conducted either into the boiler, or
if more than one fire box is employed, then it may be conveyed by an additional pipe
to pass through a similar cavity encircling the remaining fire box.
Since there is at this part of the above described fire box, considerable heat which
has beretofore been wasted the temperature of the water in passing said part nust
be considerably enhanced, and since the water is made to pass or encircle these parts,
they, said parts are kept cooler thereby and are less liable to be burnt away, in
addition to benefiting the fireman by way of keeping same more cool.
1
1 1000
CHARLES J. SEAMAN.
HENRY ROBERTS.
Per Samuel Hey,
A cont
COMPLETE SPECIFICATION.
Improvements in and Appertaining to Boilers for Generating Steam
or similar other Purposes.
We CHARLES JOSEPH SEAMAN of 19 Wellington Street, Stockton-on-Tees in the
County of Durham, Engineer and Merchant, and HENRY ROBERTS of Mytholmes,
Haworth near Keighley in the County of York, 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 statement, that is to say :-
It relates to improvements in and appertaining to boilers for generating steam
or similar other purposes, and consists of constructing and arranging certain parts
through which the water on entering said boilers, will have to pass, in such a
manner that the temperature thereof on its arrival within the boiler will be con-
siderably enhanced and by these said improvements certain parts are rendered more
durable than heretofore.
Such being the nature and object of our said invention in order that same may be
more readily understood we have hereunto appended a sheet of drawings illustrative
thereof to which by figures and letters, reference is made in the following
description.

page_text: Fig. 1 is end elevation of a boiler having two fire boxes constructed in accordance
with this invention. Fig. 2 is a section of fig. 1 on line a b. Fig. 3 is a sectional
end elevation of parts shewn by fig. 1. Fig. 4 is a similar view to fig. 2 but shews a
modification thereof. Fig. 5 is a sectional top view on line c d of fig. 1.
Similar letters and figures of reference indicate similar parts throughout the
several views.
The object of this invention is attained by forming a cavity e to encircle part of
the front outer edge of the fire box f, as also to extend across the front outer edge (as
is shown at e') of the bars g forming the fire grate. This latter cavity el may be
formed somewhat double, as shown by fig. 5, so that when the feed pipe h is coupled
thereto in about the position shewn, the water is made to pass forwards along one
portion of this cavity e, as indicated by the series of arrows (which throughout the
several views indicate the direction in which the water is supposed to flow) and back
along the other portion from which it passes into the cavity e or this said cavity el
may be single and the water allowed to circulate therein freely. From the cavity
the water is conducted (if the boiler p has only one fire box, directly into said
boiler p, or if it has two fire boxes ffthen) through the pipe K into the cavity el
formed in the other fire box from whence it enters the boiler p through the pipe K.
The position of the opening (as also of that marked 1) for the passage of the
water from the cavity e, and to which the pipe h is shewn as being coupled, is
preferably as near the upper edge thereof as is practicable so that as the water
by being heated, ascends to the top of the cavity it is conducted away at its
highest temperature.
Instead of the cavity e being rectangular in cross section as is shewn by fig. 2, it
might be of the shape shewn by fig. 4, or again this shape may be further varied
as may be desired or thought advisable by those adopting the use of this invention,
either for facilitating the heating of the water, it may contain, by enhancing its
outer or heating surface, or for counteracting any undue expansion by heat of the
metal forming the walls of said cavity. To counteract this expansion in connection
with the cavity e of rectangular shape in cross section, the expansion joint formed,
as shewn at m, figs. 2 and 3, by two pieces of sheet metal of suitable shape being
rivetted together at their inner edges and also rivetted to that wall of the cavity e
in contact or near the fire, may be made use of or such wall may be corrugated or
bent, or any other well known method of counteracting the effects of expansion may
be adopted. Since there is at this front outer end of the fire box f (or ƒ¹) a con-
siderable amount or degree of heat which has heretofore been wasted, the temperature
of the feed water in passing along said part is considerably enhanced and since the
water is made to pass or circulate through those parts e and e', they are thereby
kept cooler and are less liable to be burat away, while their coolness also contributes
considerably to the comfort of the fireman.
Having now particularly described and ascertained the nature of our said Inven-
tion, and in what manner the same is to be performed, we declare that what
we claim is —
1. The combination with a boiler for generating steam or other purposes, means
for forming a cavity to encircle the orifice of the fire box (or fire boxes) used in
connection with said boiler substantially as and for the purposes specified.
2. The use and employment of means for conducting the feed water of boilers and
causing same to flow around the front outer ends of the fire-boxes used in connection
therewith, prior to its entry into said boilers substantially as and for the purpose
specified.
Dated this 9th day of October 1889.
C. J. SEAMAN.
H. ROBERTS.
Per Samuel Hey,
Agent.