An Improved Warming Apparatus Boller.
Year: 1889

page_text: Date of Application, 1st May, 1889
Complete Specification Left. 1st Feb.. 1890-Accepted, 1st Mar., 1890
PROVISIONAL SPECIFICATION.
An Improved Warming Apparatus Boller.
I, THOMAS WILLIAM HARRISON, of Phoenix Chemical Works, Hanley, Staffordshire,
Manufacturer of Potters' Colours and Glazes, do hereby declare the nature of this
invention to be as follows:-
This invention relates to an improved tubular boiler for heating and circulating
water through the pipes of warming apparatus in greenhouses and other buildings and
the object of this invention is to provide a tubular boiler of very simple construction
having a large heating surface and to the interior of which access can readily be had
for cleaning or repairs
One torm of the said improved boiler consists of a pair of square end plates by
preference of wrought iron or steel one at the front and the other at the back of the
boiler connected together by a number of wrought iron or other metal tubes of small
diameter the ends of which are fixed in the end plates by ferrules, lock nuts, or other
suitable means. Above the said tubes is a cast iron or other metal top plate made
hollow and divided longitudinally into chambers and secured to the end plates which
latter have openings corresponding with the said chambers so that the water can
circulate freely therethrough Between the chambers in the top plate is a passage or
passages through which the smoke and heat can pass from the underside to the flue.
Each end plate is provided with a box like covering piece by preference made of cast
iron and bolted or otherwise secured to the end plates so as to form a chamber at
each end of the boiler connecting with the open ends of the tubes.
The tubes and top plate are heated outside by fire underneath, the products of
combustion passing up between the tubes and through the passage or passages in the
top plate to the flue. The water enters at or near the bottom of the chamber at the
front of the boiler and passes through the tubes and passages in the top plate to
the chamber at the back of the boiler from whence it flows out at or near
the top.
By removing the said box like covering pieces at the front and back of the boiler
the tubes are exposed and can be examined, cleaned, removed, or replaced.
I sometimes provide a hollow cast iron or other metal plate at each side of the
boiler similar to the top plate above described and through which the water circulates
and I prefer to carry these plates down at each side of the fire and in this case the
front is provided with an opening for the fire door.
The end plates instead of being square as above described may be oval, round, or
other suitable form.
Datud this 30th day of Anv 1000
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improved Warming Apparatus Boiler.
I, THOMAS WILLIAM HARRISON, of Phoenix Chemical Works, Hanley, Staffordshire,
Manufacturer of Potters' Colours and Glazes 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 :-
This invention relates to an improved tubular boiler for heating and circulating
water through the pipes of warming apparatus in greenhouses and other buildings
[Di 27

page_text: and the object of this invention is to provide a tubular boiler of very simple con-
struction having a large heating surface and to the interior of which access can readily
be had for cleaning or repairs
A warming apparatus boiler constructed according to this invention is illustrated
by the accompanying drawing on which Fig 1 represents the said boiler in longi-
tudinal sectional elevation and Fig 2 is a front view of the same; Fig 3 is an end
view of the same with the cast iron box like covering piece removed, Fig 4 is a part
sectional plan of the same, and Figs. 5 and 6 illustrate details of the same
The same letters of reference indicate the same or corresponding parts in all the
Figures of the drawing.
The said improved boiler consists of a pair of square end plates by preference of
wrought iron or steel one, a¹, at the front and the other a² at the back of the boiler
connected together by a number of wrought iron or other metal tubes marked b of
small diameter the ends of which are fixed in the end plates a¹ a² by fenules lock-
nuts or other means as usually employed in other tubular boilers
8
Above the said
tubes is a cast iron top made in sections (in this case four of these sections are used
and marked respectively c¹ c², c) each forming a tubular chamber with flanged ends
which are bolted to the end plates, and in the end plates are openings marked d
corresponding with the open ends of the chambers so that the water can circulate
freely therethrough. Between each of the said chambers is a vertical passage marked e
through which the smoke and heat can pass from the underside to the outlet flue f
above Each of the said end plates is provided with a box like covering piece
preferably made of cast iron and marked respectively g'g' and flanged round the
outer edges and bolted to the end plates so as to form a chamber at each end of the
boiler connected with the open ends of the tubes
In the boiler illustrated the front end plate and its corresponding covering piece
are provided with a fire-bole / closed by a suitable door or doors and below and at
the sides of the fire-door some of the circulating tubes are arranged so as to form a
fire-grate, the tubes below the fire-door serving as fire-bars which are alternated with
ordinary fire-bars marked 2, which, as shewn in Fig 6, have ears on both sides of
each end so as to rest upon the tubes. By disposing the circulating tubes round the
fire-grate as described and illustrated the fuel is economised and when the fire-grate
is required to be cleaned out the loose fire-bars) can readily be removed.
Instead of arranging the fire to be amongst the circulating tubes as above described
and illustrated, the fire-hole h may be dispensed with and the lower part of the end
plate perforated and furnished with tubes similar to the upper part, and in this case
the fire is arranged below the boiler with ordinary fire-bars.
The products of combustion from the fire pass up between the circulating tubes b
and through the passages e in the top part to the flue The water enters at or near
the bottom of the chamber at the front of the boiler by the inlet or inlets k and
passes through the tubes and longitudinal passages in the cast iron tubular top part
to the chamber at the back of the boiler between the plates a¹, g³, from whence it
flows through an outlet or outlets / at or near the top.
By removing the box like covering pieces g¹³ the ends of the tubes are exposed
and can readily be examined, cleaned, removed, or replaced.
In one or both of the side walls of the boiler setting is provided a soot-door m
through which the soot from the outsides of the tubes can be removed
Cast iron or other cast metal tubular sections similar to those illustrated as used at
the top of the boiler for the water to circulate through may be used at the sides and
similarly fixed to the end plates and if preferred they may be carried down at each
side of the fire.
The accompanying drawing illustrates what I have found to be the best way for
carrying my invention into practice but it is to be understood that the said invention
is not limited to the precise details illustrated, or to the form of the end plates of the
boiler, as instead of being square as above described, and illustrated they may be oval,
round, or of other suitable form.

page_text: 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 :-
1. In a warming apparatus boiler and in combination, the circulating tubes, the
end plates supporting the same, the cast iron or other metal box like pieces removably
fixed to the end plates and connecting together the open ends of the circulating tubes
and furnished with inlet and outlet openings for the water, all substantially as and
for the purposes set forth, whether the firegrate is arranged amongst the circulating
tubes or below the same as described.
2. In a warming apparatus boiler and in combination, the circulating tubes, the
end plates supporting the same, the hollow cast iron or other metal sectional top part
fixed between the end plates and through which the water flows and furnished with
passages for the smoke and heat, the cast iron or other metal box like pieces
removably fixed to the end plates and connecting together the open ends of the
circulating tubes and tubular top part and furnished with inlet and outlet openings
for the water, all substantially as and for the purposes set forth, whether the firegrate
is arranged amongst the circulating tubes or below the same as described.
3. The combination and arrangement of parts constituting the improved warming
apparatus boiler hereinbefore described and illustrated by the accompanying
drawing.
Dated thie 21at dow of Jannar 1800.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.