Improvements in Steam or Hot Water Bollers for Heating Buildings and the like.
Year: 1898

page_text: Date of Application, 4th Jan., 1898-Accepted, 12th Mar,, 1898
Improvements in Steam or Hot Water Bollers for Heating
Buildings and the like.
I, ALEXANDER Dox, of 10, Ellwood Avenue, in the City of Newark, County of Essex,
and State of New Jersey, United States of America, Steam-filter, 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 aud by the following statement :-
This invention relates to the type of hot water and steam boilers used for heating
buildings, which are made or cast in sections, and the invention has for its objects to
materially increase the area of the surfaces against which the flames and the products
of combustion act; to provide a continuous and unobstructed passage for the water;
to provide an increased grate surface to carry the fire; and to provide a shaking
mechanism adapted to most easily shake and clean the fire; to join the several parts
together by such a means as not to allow of any leakage; and to accomplish these ends
in the simplest manner. With these and other ends in view, my invention consists
in the novel construction, and the combinations and arrangements of the several parts
to be herein-after fully described and finally embodied in the clauses of the claim.
To enable others to understand my invention, I will proceed to a detailed description
thereof, in connection with the accompanying drawings, in which :—
Figures 1 and 2 are perspective views of my novel construction of steam or hot
water boiler;
Figure 8 is a view of the base, fire pot, grate and dome, partly in section and partly
in front elevation ;
Figure 4 is a section on line x in said Figure 1; and
Figure 5 is a horizontal section on line y in said Figure 4, showing a plan or top
view of the fire pot section.
Figure 6 is a sectional view along the line z in Figure 2, looking in the direction of
arrow 2:
Figure 7 is a sectional view of the top of the fire pot section, along the line u in
Figure 6; and
Figure 8 is a perspective view of the fire pot section and base, detached.
;
Referring to the drawings, in which similar letters of reference are employed to
indicate corresponding parts, A denotes the base provided with a grate which is made
up of a series of bars h, each bar being formed by a shaft, having the upwardly extend-
ing projections, which have on their upper surfaces a series of pointed projections b¹
a denotes the rests for the grate bars, which may be either cast integral with the base A
or may be made separately and fastened thereto to provide a means for holding the
bars b in position. The grate bars are turned on their journals at their ends, by means
of a link shown in elevation in Figure 3, which is operated by a single lever h³ and
the handle b in front of the boiler.
The fire pot C is made in one piece and consists of an inner wall c-c' and an outer
wall c³, the said walls being united at their lowest parts by a margin or web, as c²,
whereby a water way f is formed at the sides and a waterway f is also formed at the
top and between the several walls, substantially as illustrated, The inner wall c is
Peire &l

page_text: provided on its lower part with teats or projections which extend into the fire pot
and form a means of protecting the live fire from the surface of the metal wall, which
is backed up by the water behind it, while the remainder and the upper portion of the
inner walls is formed with corrugations co, as shown in Figures 4, 6, 7 and 8, thus
providing as much heating surface in the fire pot section as is possible.
The rear and top water ways are connected by suitable water legs c', any desirable
number, which are integral with the fire pot and form increased passages for the
water where it is most needed, and where it will be acted on by the full force of the
flames and products of combustion, as they pass from the fire pot into the upper parts
of the boiler. The crown sheet or upper wall ol is provided with a bowl or depres
sion c, allowing the water to more easily rise at the central water connection c* in
the upper wall c³ of the fire pot C and into the dome above it, which obviates the
liability to crack the crown sheet, while at the same time, it operates to spread the
flames against the under surface of the crown sheet or upper wall c¹ of the fire pot.
In said screw-threaded flange cº, forming the central water connection in the upper
wall e, herein-above mentioned, is screwed a ring or nipple g onto which is secured
the screw-threaded flange e of the dome E thereby forming a means of central water
connection with the water passages surrounding the fire pot section and the water
passages in the dome E above said fire pot section. There are several other means
in which the central water connection is made, but the screw nipple g is the preferred
form of construction. Flues c10 lead from the fire pot section through the top of the
fire pot at its upper walls c and es into the space el between the fire pot and the
dome, forming a passage for the escape of the products of combustion. The front of
the fire pot is provided with a convenient opening e¹¹ for a door for the admission of
fuel.
As shown in Figures 4 and 8, the base A is provided with the shoulder or lugs a¹
and the upwardly projecting flange a² on which the fire pot section C is operatively,
but removably, arranged, as will be clearly evident. Said base A is provided with the
usual opening as for the ash-pit door.
The dome section E consists of an outer shell E, of a semi-circular or other preferred
form, with its lower side e² preferably corrugated, as shown, which, when the dome is
in position is horizontal and parallel with the top or upper wall ca of the fire pot
section, and is provided with a screw-threaded flange e, herein-above mentioned,
which corresponds to the flange cº on the fire pot section C, these two flanges forming
the means for connecting the two sections C and E together by means of said screw
nipple g, or any other preferred method. As has been stated, the said lower side e
of the dome E is formed with corrugations, thus increasing the surface to be acted
upon by the products of combustion. The dome E is provided with a back e³, cast.
integral with the main shell, and a front which is set slightly back from the front e
of the dome, and at an angle, forming an open chamber in front of the flue spaces
and e in the dome, said front & being arranged at an angle to insure the proper
distribution of the products of combustion into the various flues.
In the front of the dome E is an opening es for a door, directly in front of the
space before said front e', which door can be opened or removed, to enable the cleaning
out of the several flues e and e7.
The said flue spaces e" and e, of which there may be any desired number, have
their walls cast integral with the ends of the outer shell e and the front e¹ of the
dome, and the water circulates from the bottom of the dome section through water
ways around said flues, and leaves the dome at the top e10, where a connection is
provided with a small chamber or dome h, which can be used to advantage above the
dome E to provide a space for the steam as it is generated, and a better means of
taking off the water connections for the feed pipes, in the case of hot water heating,
to the rooms of a building.
The chamber et formed between the fire pot and the dome-section is enclosed by a
metallic casing i, thus providing a chamber through which the products of
combustion pass in their passage from the flues cl connected with the fire pot. C to
the dome E. This casing may be provided with suitable clean-out doors and is lined

page_text: with a suitable non-conductor to prevent the radiation of the heat, as will be seen
from an inspection of Figure 4.
The smoke and products of combustion are gathered at the rear of the dome, by a
cover k, covering the several outlet ends of the various flues e and e, where the
smoke and gases are united and conducted to the smoke pipe . This collar or
cover k is made separate from the dome and screwed or otherwise secured thereto.
As will be seen from Figures 3 and 5, the fire pot section is provided with the
usual opening for the return of the system of piping for conveying the steam or
hot water through the building and back into the boiler, and j is an ordinary cock,
preferably provided with a threaded end for the attachment of a hose or pipe thereto,
to admit water into the boiler or to draw the water off therefrom, as may be desired..
Changes in the form and proportions of the parts and details of construction may
be made without departing from the spirit of, or sacrificing the advantages of my
invention, and I therefore do not limit my present invention to the exact
arrangements and combinations of the parts herein described and illustrated, and
I reserve the right to make such modifications as fairly fall within the scope of my
invention.
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. In a boiler for steam or hot water, a fire pot section, consisting, of an inner
wall, an outer wall, and an intermediate and vertical water way, the two walls joined
integrally together, a horizontal crown sheet, an upper horizontal wall above said
crown sheet provided with a means of central water connection, a horizontal water
way between said crown sheet and upper horizontal wall, vertical smoke flues at the
back connecting the crown sheet with said upper horizontal wall, and a series of water
legs cast integral with said inner wall, providing a means of direct communication for
the water between said vertical and horizontal water ways, said water legs being
alternately spaced in relation to said fines, whereby the spaces between any two
water legs form a continuation of the smoke-flues into the fire pot, substantially as
and for the purposes set forth.
2. In a steam or hot water boiler, a fire pot section made in one piece of metal,
consisting, of an inner wall, an outer wall, forming vertical and horizontal water ways,
a series of water legs or passages communicating between said vertical and horizontal
water ways, vertical flues connecting said inner and outer walls for the passage of
the products of combustion, the lower part of said inner wall being provided with a
multiplicity of teats or projections, and the remainder of the inner wall formed
directly above said teats with vertical corrugations, substantially as and for the
purposes set forth.
3. In a steam or hot water boiler, a fire pot section made in one piece, consisting,
of a vertical inner wall, vertically arranged corrugations on said wall, a horizontal
crown sheet, a vertical outer wall and an upper horizontal wall, forming vertical and
horizontal water ways, and a bowl or depression in said crown sheet, substantially as
and for the purposes set forth.
4. In a steam or hot water boiler, a fire pot section made in one piece, consisting,
of a vertical inner wall, vertically arranged corrugations on said wall, a horizontal
crown sheet, a vertical outer wall and an upper horizontal wall; forming vertical
and horizontal water ways, a bowl or depression in said crown sheet, and vertical
flue connections with said crown sheet and said upper horizontal wall, for the
passage of the products of combustion, substantially as and for the purposes
set forth.
5. In a steam or hot water boiler, a fire pot section made in one piece, consisting,
of a vertical inner wall, a horizontal crown sheet, a vertical outer wall and an
upper horizontal wall, forming vertical and horizontal water ways, a bowl or
depression in said crown sheet, vertical flues connecting said crown sheet and said
upper horizontal wall, for the passage of the products of combustion, and the lower

page_text: part of said inner wall being provided with a multiplicity of teats or projections and
the remainder of said inner wall formed directly above said teats or projections with
vertical corrugations, substantially as and for the purposes set forth.
6. In a steam or hot water boiler, a dome or top section, consisting, of an outer
shell of metal, a lower corrugated side e², horizontal flue space or spaces, water ways
surrounding said flue space or spaces, and a means of central water connection for
connection with a fire pot section, substantially as and for the purposes set forth.
7. In a steam or hot water boiler, & dome or top section having a central water
connection for connection with a fire pot section, and provided with horizontal water
ways and flue space or spaces, and having its lower side horizontal and provided with
corrugations, and its upper surface of a curved outline, substantially as and for the
purposes set forth.
8. In a steam or hot water boiler, a top or dome section, consisting, of an outer
shell of metal, a lower corrugated side e³, and provided with water ways, a horizontal flue
space or spaces, means of central water connection with a fire pot section, a removable
front, and a cover, as k, connecting said flue or flues with a chimney, substantially as
and for the purposes set forth.
9. In a steam or hot water boiler, the combination, with a fire pot section,
consisting, of an inner and an outer wall, an intermediate water space, one or more
vertical flues, of a dome section, consisting, of an outer shell of metal, interior water
way, horizontal flue space or spaces, and a means of central water connection, for
connecting said dome section with the fire pot section, substantially as and for the
purposes set forth.
10. In a steam or hot water boiler, the combination, with a fire pot section,
consisting, of an inner wall, an outer wall, a horizontal crown sheet, provided with a
means of central water connection and an upper horizontal wall; vertical smoke flues at
the back connecting the crown sheet with said upper horizontal wall, providing a
means of direct communication for the water between the several water ways, and
water legs alternately spaced in relation to said flues, whereby the spaces between
any two water legs form a continuation of the smoke flues into the fire pot, of a dome
section, consisting, of an outer shell of metal, interior water way, horizontal flue
spaces, a means of central water connection, for connecting said dome section with
said fire pot section, a detachable front or door for said dome section, a smoke cover
or collar, as k, connecting said flues with a chimney, and a shell or casing between
said dome and fire pot section, forming a smoke chamber between said sections,
substantially as and for the purposes set forth.
Dated this 30th day of October 1897.
ALEXANDER DON.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.