Improvements relating to Apparatus for the Manufacture of Water Gas.
Year: 1893

page_text: Date of Application, 24th Mar., 1893-Accepted, 22nd July, 1893
COMPLETE SPECIFICATION..
Improvements relating to Apparatus for the Manufacture of
Water Gas.
I, ARTHUR GRAHAM GLASGOW, of Westminster Chambers, 9 Victoria Street
in the City of Westminster, Engineer, 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 :-
My invention relates to apparatus for the manufacture of water gas, and
particularly to the construction of the device known as the oil heater used in the
carburation of gas. The object of my invention being to provide an oil heating
device, at once, simple, efficient, and durable. The nature of my improvements will
be best understood as described in connection with the drawings in which they are
illustrated, and in which,
Figure 1 is a side elevation partly in section, showing a gas manufacturing plant
provided with my improvement.
Figure 2 is a longitudinal section on the line 1-2 of Figure 1, showing the
construction of the oil heater.
Figure 3 is a cross section taken on the line 3-4 of Figure 2.
Figure 4 is a cross section taken on the line 5-6 of Figure 2.
Figure 5 a central cross section through the wash box, and
Figure 6 an outline plan view of the wash box.
The gas manufacturing plant to which my invention is applied may be of any
convenient construction.
As shown in Figure 1, A, is a water gas generator of usual construction;
B and C, superheaters or fixing chambers, the gas passing from the generator
through conduit A¹ to the superheater B; oil is there sprayed into the gas through
the oil nozzle M' and the water gas carrying the oil with it then passes through the
previously heated checkerwork in chamber B through conduit B' to the superheater C,
and through the heated checkerwork in that chamber to the delivery pipe C³. This
pipe is open at the top and provided with a valve or lid D which is open to permit
the products of combustion to escape while the apparatus is being heated up previous
to the manufacture of water gas. When the apparatus is ready for manufacturing
gas, the lid D is closed and the water gas then passes from the conduit C³ into the
conduit E and thence into and through conduit F, F1, F2, the lower portion F2, of
which passes into the wash box P; from the wash box the gas is passed through
conduit P¹ to the purifier Q, thence through conduit Q to the purifier Q¹ and
thence to the main R.
The oil heating device is situated in the conduit F F F and consists of a tube G,
which is supported in the conduit F by a spider L, upon which rests lugs K fixed
to the pipe & near its top. This spider also insures that the pipe G shall occupy
a central position in the gas conduit. A socket G2 is welded to pipe G near its top
and so near the lugs K that the expansion and contraction, with the varying
atmosphere, of the distance between them is inconsiderable. To this socket is
secured the oil delivery pipe M, which should be substantially at a right angle with
the oil heåter, and which passes through the opening N in the gas conduit and is
continued as shown at M M² leading to the oil injector M³; m indicates a valve
(not essential) in the pipe M, by which the delivery of oil can be regulated. With
the bottom of the oil heating tube G connects the oil feed pipe O, leading from the
oil supply. The bottom of the tube G, is contracted as shown at G¹. The feed
pipe is shown as leading vertically to this contraction as indicated in
Figures 1 and 5 where the pipe O is shown as leading first vertically downward,

page_text: then turning at right angles and passing through an opening N¹ at the side of the
wash box. But the main pipe G may be continued down to the horizontal portion
of the feed pipe O.
Now it will be noticed that by the above construction the oil heater is supported
at or so near the line of the socket G³ that the expansion and contraction of the
heater brings no strain upon the outlet pipe M; while the spring of the long
horizontal portion of the small pipe O permits of the full expansion and contraction
of the heater without the least injury to any of its parts.
In order to ensure greater efficiency in the oil heater I provide an internal rod H,
running through the centre of the tube G substantially through its entire length
but terminating as shown a short distance above the bottom. The top of this rod H
is preferably welded to the top G³ of the tube G, as indicated in Figure 2, and
lugs or spiders J, keep it substantially concentric with the tube G. I have referred
to this device as a rod, but it is preferably constructed as shown, in the form of a
tube with both ends closed. It will be noticed that the head G³ is a solid welded
head, and that the tube H is welded to this head; by this construction the necessity
for joints or plugs is done away with and there is no danger of any leak at this
point. The effect of this centrally located rod or tube is, firstly, to cause the oil to
pass upward through the heater in the form of a hollow cylinder, the oil being thus
brought into close contact with the heated walls of the tube G; and, secondly, to
reduce the volume of oil left in the heater after the end of each run. Any
accumulation within the heater tending towards stoppage is removed by an occasional
current of steam introduced as at S, and discharged through a waste tap as at W.
It will further be noticed that the form above described allows the heater to be
of welded construction throughout, and without separable joints except where the
inlet and outlet pipes are connected, and it is so built in practice, avoiding entirely
the leakage common in devices for this purpose.
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,
First. The combination with a gas conduit F of an oil heating tube G situated in
said conduit and formed with its closed head G³ integral with its sides as by
welding and an internal centrally located rod H secured to head G³ by a welded
joint and extending close to its lower end.
Second. In combination with a gas conduit F of an oil heating tube G situated
in said conduit and formed with its closed head G³ integral with its sides as by
welding, and with a contracted lower end G' and an internal centrally located
rod H secured to head G³ by a welded joint and extending close to its lower end.
Third. In combination with a gas conduit F of an oil heating tube G situated in
said conduit and formed with its head G³ integral with its sides as by welding, an
internal centrally located rod H secured to head G³ by a welded joint and
extending close to its lower end and spacing lugs J secured to rod H.
Fourth. The combination with a gas conduit F of an oil heating tube G located
in said conduit an oil delivery pipe M extending through the walls of conduit F and
secured to tube G; an oil entrance pipe O, a transversely and vertically extending
portion of which is secured to tube G; a steam inlet as S into the delivery pipe M,
and a waste tap as W, leading from the oil entrance pipe O, all substantially as
specified.
Fifth. The combination with a gas conduit F of an oil heating tube supported at
its upper end in said conduit, an oil delivery pipe M extending through the walls of
conduit F and secured to the tube G near its point of support in the conduit F and
an oil entrance tube O entering the tube G from below the conduit F and having a
transverse extension lying below said conduit.
Sixth. The combination with a gas conduit F having a spider L of an oil heating
tube G located in said conduit and supported on said spider near its upper end, an
oil delivery pipe M extending through the walls of conduit F, and secured to tube G

page_text: near the spider and an oil entrance tube 0 entering the tube G from below
conduit F and having a transverse extension lying below said conduit.
Seventh. The combination with a gas conduit F and a wash box into which said
conduit extends, of an oil heating tube G supported in said conduit an oil delivery
pipe M secured to the tube G near its upper end and an oil entrance pipe O opening
into the lower part of the tube G and having a transverse extension below conduit
in the wash box substantially as described.
Dated this outh of Mauch A D 1902
HASELTINE, LAKE'& Co.,
45, Southampton Buildings, London, Agents for the Applicant.