Year: 1899

page_text: Date of Application, 23rd May, 1899
Complete Specification Left, 23rd Feb., 1900-Accepted, 24th Mar., 1900
I, WILLIAM MORRIS, of 125, Renfrew Road, Govan, in the County of Lanark,
Boiler Maker, do hereby declare the nature of my invention to be as follows:-
A communication from Daniel Murray, of Johannesburg, South African Republic.
This invention has reference to and comprises improvements in and relating
to steam boilers and consists in an improved construction or general arrange-
ment and combination of the parts of a land boiler by which the following advan-
tages are obtained. Simplicity of construction whereby repair in any part is
easily effected. A greater heating surface in proportion to grate surface and
consequent concentration of the heated products of combustion by which economy
of fuel is effected. An improved and efficient circulation of the water is also
obtained.
In carrying the improvements of this invention into practice the boiler which
is a combined tubular and water tube boiler is composed of three main shells or
drums connected together by tubes and nipples, all arranged as follows.
Two of these main shells or drums are fitted with tubes for the passage of the
hot gases and are set parallelly at a short distance apart, while the third one which
has no tubes, is placed above the first two and lies upon them. A steam drum
may or may not be placed above as is suitable, and when not so used the upper
drum is the steam and water drum and is fitted with the usual steam dome and
valve. A mud drum is placed transversely below the level of the drums at the
back end and is connected to each drum by a vertical pipe or tube. The boiler
is placed at an angle sloping from the front to the back to facilitate the circula-
tion of the water as it is heated. The two lower drums fitted with tubes are con-
nected together by a series of cross tubes, each in two sections
screwed into the shells of the drums, and connected together by
screw couplings. The upper drum is connected to the lower drums
by a series of short tubes or nipples screwed into both where they meet
alternating with solid stay bolts, compensation strips or plates being used. The
two lower drums are also connected to the upper one by curved water, circulating
tubes, one set leading from the sides of the lower drums to the bottom of the lower
one, and another set leading from the top of the lower drums to the sides of the
upper one. All the drums are fitted with the necessary manholes, and the upper .
one which is longer than the other two and protrudes from the end of the furnace
casing is fitted with the usual steam and water gauges. The boiler is also sup-
plied with the usual safety valve and other necessary fittings.
The boiler is enclosed in a furnace casing composed of fire brick walls and fire-
clay covers and is bound together by iron bars at intervals and is further sup-
ported by special tubular standards or pillars connected at their tops by small
girders from which the boilers are partially suspended by rods jointed to them.
These tubular standards are preferably partially or wholly filled with cement.
The fuel is burnt preferably on one firegrate to which it is fed through three
furnace doors with corresponding ash pit doors below, and the heated products

page_text: of combustion pass first under the lower part of the drums and over and under
the mud drum to the back of boiler where they are deflected upwards and return
through the tubes of the two lower drums to a smoke box in front, fitted with
the usual doors, whence they flow over the upper parts of the two lower drums and
along the sides of the upper one to the back end of the boiler into the flue leading
to the chimney. Either natural or forced draught may be employed for supply-
ing air to the fire.
The feed water is led in preferably from the front of the boiler by a pipe passing
along the bottom of the upper drum, and inside of same so as to heat the water,
whence it passes down the interior of the vertical pipe connecting the upper drum
to the mud drum and is so delivered to the lowest point of the boiler. Otherwise
however the feed water pipe may be carried along the flue to the mud drum
instead of inside the upper drum.
Improvements in and relating to Steam Boilers.
I, WILLIAM MORRIS, of 125, Renfrew Road, Govan, in the County of Lanark,
Boiler Maker, do hereby declare the nature of my invention and in what manner
the same is to be performed to be particularly described and ascertained in and
by the following statement in writing reference being made to the accompanying
two sheets of drawings::
A communication from Daniel Murray, of Johannesburg, South African Republic.
This invention has reference to and comprises improvements in and relating
to steam boilers and consists in an improved construction or general arrange-
ment and combination of the parts of a fand boiler by which the following advan-
fages are obtained. Simplicity of construction whereby repair in any part is
easily effected. A greater heating surface in proportion to grate surface and
consequent concentration of the heated products of combustion by which economy
of fuel is effected. An improved and efficient circulation of the water is also
obtained.
And in order that my said invention may be properly understood, I have here-
unto appended two sheets of explanatory drawings in which Figure 1 is a sec-
tional side elevation, and Figure 2 is a sectional view on the line 1-1 of a boiler
constructed in accordance with my improvements, while Figure 3 is a similar sec-
tion but illustrating a slightly different arrangement.
In carrying the improvements of this invention into practice the boiler which
is a combined tubular and water tube boiler is composed of three main shells or
drums connected together by tubes and nipples, all arranged as follows.
Referring to the drawings:-
Two of these main shells or drums A, A, are fitted with tubes a for the passage
of the hot gases and are set parallelly at a short distance apart while the third
one B which has no tubes is placed above the first two and lies upon them, as
shown in Figures 1 and 2 or at a short distance above them as shown in Figure 8.
An ordinary steam drum may or may not be placed above as is most suitable, and
when not so used the upper drum B is the steam and water drum and is fitted with
the usual steam dome and valve not shown in the drawings. A mud drum Cis
placed transversely below the level of the drums at the back end and is connected
to each drum A, A, B, by a vertical pipe or tube C. The whole boiler is placed
at an angle sloping from the front to the back to facilitate the circulation of the

page_text: water as it is heated. The two lower drums A, A, fitted with tubes a are connected
together by a series of cross tubes A', Figures 1 and 2, each in two sections screwed
into the shells of the drums and connected together by screw couplings a'. The
upper drum. B is connected to the lower drums by a series of short tubes or
nipples B screwed into both where they meet, these nipples alternating with solid
stay bolts, compensation strips or plates B2 being used. The two lower drums
may be connected to the upper one by curved water circulating tubes similar to
those shown at D in Figure 3, one set leading from the sides of the lower
drums A, A, to the bottom of the upper one B and another set leading from the
top of the lower drums A, A, to the sides of the upper one B, or these curved
tubes may be used in combination with the cross tubes. A. and nipples B₁ either
alternately with them or in groups. The wedge shaped spaces where the drums
meet may be filled in by fireclay pieces or ganister.
As shown in Figure 3 the upper drum B may be placed higher above the two
lower drums than as shown in Figure 2 and all be connected together by tubes
which may be straight and be alternately plain and stay tubes or they may be
curved tubes as shown at D. In this case the spaces between the upper tubes con-
necting the upper part the lower drums to the upper drums is filled in with fire
brick or the like to form the side'passages H for the hot gases to pass along to the
chimney.
* 2
All the drums are fitted with the necessary manholes, as indicated at a² and b
and the upper drum B which is longer than the other two and protrudes from the
end of the furnace casing is fitted with the usual steam and water gauges not shown
in the drawings. The boiler is also supplied with the usual safety valve and other
necessary. fittings.
The boiler is enclosed in a furnace casing composed of fire brick walls E and
fireclay covers E¹ and is bound together by iron bars F and tie rods Fat intervals,
and is further supported by special tubular standards or pillars G connected at
their tops by small girders G¹ from which the boilers are partially suspended by
rods jointed to them at g¹. These tubular standards are preferably partially or
wholly filled with cement.
The suspending rods may however be dispensed with, and the boiler be sup-
ported by angle bars running the entire length and rivetted one on each side of
bottom drums, and which rest on a reverse bar rivetted to a plate which will form
a cradle, but other means for supporting the boiler, which form no part of this
invention, may be used.
The fuel is burnt preferably on one firegrate I to which it is fed through three
furnace doors 1 with corresponding ash pit doors 12 below, and the heated pro-
ducts of combustion pass first under the lower part of the drums A, A, and over
and under the mud drum C to the back of boiler there they are deflected upwards
and return through the tubes of the two lower drums A, A, to a smoke box A²
in front, fitted with the usual doors A' one opposite the end of each drum A, whence
they flow over the upper parts of the two lower drums and along the sides of the
upper one along the passages H to the back end of the boiler into the flue J leading
to the chimney. Either natural or forced draught may be employed for supply-
ing air to the fire.
The feed water is led in preferably from the front of the boiler by a pipe K
passing along the bottom of the upper drum B, and inside of same so as to heat
the water, whence it passes down the interior of the vertical pipe C¹ connecting
the upper drum B to the mud drum Cand is so delivered to the lowest point of
the boiler. Otherwise however the feed water pipe may be carried along the flue
to the mud drum instead of inside the upper drum.
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
First. The construction or arrangement and combination of the parts of a

page_text: steam boiler substantially as herein described and illustrated by the accompany-
ing drawings.
Second. The construction or arrangement and combination of the parts of a
steam boiler consisting of two tubular drums connected to an upper drum by tubes
and nipples with or without an upper steam drum and supplied with the usual
boiler fittings substantially as herein described and illustrated by Figures 1 and
2 of the accompanying drawings.
Third. The construction or arrangement and combination of the parts of a
steam boiler consisting of two tubular drums connected to an upper drum by
curved tubes with or without an upper steam drum and supplied with the usual
boiler fittings substantially as herein described and illustrated by Figures 1 and 2
of the accompanying drawings.
Fourth. In steam boilers of the class described the arrangement of the passages
for the heated products of combustion below the lower drums through the tubes
of same and back above said drums to the chimney substantially as herein
described and illustrated by the accompanying drawings.
Fifth. In steam boilers of the class described the fitting of the feed water pipe
substantially in the manner herein described and illustrated by the accompanying
drawings.
Sixth. In steam boilers of the class described the fitting of the mud drum con-
nected to each of the heating drums by vertical pipes substantially as herein
described and illustrated by the accompanying drawings.
Seventh. In steam boilers of the class described the supporting of the drums
by rods jointed to same and depending from girders carried by hollow pillars par-
tially filled up with cement substantially as herein described and illustrated by
the accompanying drawings.
Dated than 1000
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.