IMPROVEMENTS IN AND RELATING TO STEAM ENGINES AND BOILERS to be as follows
Year: 1884

page_text: I, WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, & Co, Patent Agents,
Southampton Buildings, London, in the County of Middlesex do hereby declare
the nature of said invention for "IMPROVEMENTS IN AND RELATING TO STEAM
ENGINES AND BOILERS to be as follows:-
"
These improvements relate to that class of small steam engines in which the
steam generator is so combined with the engine itself as to practically form a part,
of the same and in which therefore the construction of the different parts of the
steam generator, and of the actual engine, are more or less dependent the one upon
the other.
In carrying my invention into practice I provide a horse-shoe shaped boiler from
which are suspended the tubes (preferably Field's tubes) serving to assist in
generating steam. The top boiler consists mainly of two dished plates, a wrought
iron frame, a cast iron or wrought iron steam dome, and the necessary joint screws.
The top plate is made removable for the purpose of cleaning or repairing the
interior of the boiler.
In the furnace a hopper for the fuel and an automatic fire-controlling device are
employed. The combustion is effected almost without any smoke because the fuel
contained in the hopper is highly heated by the fire near it whereby gases are
produced.
The combustion is controlled by a special flap which allows of cold air passing
over the fire if the steam pressure in the boiler should become too great. For this
purpose a small cylinder fitted with a piston is screwed to the steam generator.
Whenever the steam pressure in the boiler rises above a fixed amount the piston
will be forced outwards and will lift the flap and cause cold air to flow through
the passage thus opened into the furnace. The temperature of the gases in the
furnace will then sink and the production of steam will be diminished. The said
cylinder is provided with a space for steam escaping by leakage which steam is
conducted away by the said passage. A lever with a counterweight is arranged
on the said flap and determines the resistance to the movement of the piston.
A plumber block and guide block is placed upon the steam dome surrounding
the cylinder and steam chest and rests upon four feet whereby the stuffing boxes
and the cylinder head are made easily accessible.

page_text: Upon the plumber block and on the outer side thereof is placed an excentric by
which the feed-pump and the steam-distributing valve are actuated.
The casing of the feed-pump and the body of the stuffing box for the valve rod
are cast in one piece and the valve-casing is bolted to the feed-pump.
The steam enters directly from the steam dome into a regulating sleeve, passes
through a check-valve, and then enters the steam-chest.
The exhaust steam from the cylinder passes into the condenser and is there
converted into water, which, after going through a cleaning apparatus passes to the
feed pump.
The condenser consists of a casing through which cooling water is conducted and
of a lower part, a cover, and a series of cooling tubes inserted in discs and packed
with india rubber rings or otherwise.
The exhaust steam passes through a tube into the upper chamber of the con-
denser where it is distributed over the cooled tubes and the water of condensation
collects in a bottom chamber from whence it flows into the aforesaid cleaning.or
purifying apparatus.
The purifying apparatus is a vessel into which the condensed water enters at the
bottom and rises along the side thereof into a passage from whence it flows off at
a certain height to the feed-pump.
Whilst the condensed water mixed with oil is passing through the purifying
vessel the particles of oil, having less specific gravity, separate from the water and
rise into a space from whence they are drawn off at intervals by opening a cock
provided for this purpose..
The loss of water caused by the constant circulation of the water from the boiler
is compensated by a supply from a cooling vessel by means of the cock.
In a modified form of boiler made on the system hereinbefore described, the
water tubes terminate at their lower parts in boxes which are also provided with
covers. The top or upper boiler is rivetted and has a removable cover.
•
A joint of the two boiler covers is used when in addition to the boiler frame a
second external frame for strengthening the structure is provided. I sometimes
employ a broad frame which is perforated for the joint bolts.
Dated this 14th day of February 1884.
HASELTINE, LAKE & Co.,
For the Applicant.

page_text: I WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, and Co, Patent Agents,
Southampton Buildings, in the County of Middlesex do hereby declare the nature
of iny invention for "IMPROVEMENTS IN AND RELATING TO STEAM-ENGINES AND
BOILERS "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 steam-engines of that class in which the steam generator
or boiler is so combined with the engine itself as to practically form a part of the
same and in which therefore the construction of the different parts of the steam
generator, and that of the actual engine are more or less dependent one upon the
other; it also relates to the construction of the said generator or boiler.
In the accompanying drawing
Figure 1 is a vertical section of the engine and boiler, and a section of the
condenser.
Figure 2. is an end view of the same partly in section.
Figure 3, is a sectional plan partly through the steam generator and partly
through the steam dome and cylinder.
Figure 4 is a sectional plan view of the engine and boiler showing the standard
and the condenser.
Figure 5 is a side elevation of a portion of the engine.
Figures 6, 7 and 8 are views of the condenser.
Figures 9 and 10 are views of the automatic fire regulating apparatus.
Figures 11 and 12 are views of the centrifugal governor together with the
throttle and check valve on the steam chest cover.
The generator or boiler is provided with a number of tubes a serving to assist
in generating steam. The said tubes are fitted into the box-shape portion C
(Figures 1 and 3) of the boiler, and are provided with circulation tubes having
curved ends v. For the purpose of cleaning the tubes a they are provided with
covers securely fastened to the tubes by means of yokes w, and screws; The gases
from the furnace A pass around the tubes a.
The box-shaped or upper portion of the boiler consists mainly of two dished
plates b and c, a wrought iron frame d, a cast iron or wrought iron steam dome B
preferably of quadrangular shape as shown, and the necessary screws or bolta.
The top plate c is made removable for the purpose of cleaning or repairing the
interior of the boiler.
To the furnace A a hopper D for the fuel is attached and has arranged in
connection with it an automatic fire-controlling device.
The combustion is effected almost without any sinoke because the fuel contained
in the hopper is highly heated by the fire near it whereby gases are produced.
The combustion is controlled by a flap e which allows of cold air passing over the
fire when the steam pressure in the boiler becomes too great. In this case the
steam from the boiler enters through the pipe f* (Figure 9) into the cylinder fand
opens the safety valve g, which is normally kept upon its seat either by a weight i
or by a suitable spring The valve g being lifted the steam acts upon the piston h
the rod of which will rise and at the same time lift the flap e Figure 1 thus
allowing cold air to flow through the passage into the furnace. The temperature
of the gases in the furnace will then sink and the production of steam will be
diminished,

page_text: It is obvious that instead of the piston h a flexible diaphragm might be
employed, or that the piston h might actuate any other device capable of lessening
the production of steam, as for instance a flap or damper in the chimney.
Instead of connecting the casing of the safety valve g directly with the cylinder f
by flanges as shown in Figure 9, communication may be established between the
same by means of a passage or tube. In the cylinder f one or more openings f¹ is
or are formed through which the steam may freely escape, the sectional area of these
openings is however smaller than that of the valve g so that pressure will be
exerted upon the piston or the diaphragm h as soon as the valve g is lifted.
The standard E which carries the bearings in which the crank-shaft is mounted
and which also serves as a guide for the piston rod is fixed upon the steam dome B
which surrounds the cylinder and steam chest. The said steam dome and steam
cylinder are preferably cast in one piece.
Upon the crank shaft and outside the bearings is placed the excentric F by
which the feed pump and the steam-distributing or slide valve is actuated. The
feed-pump k together with the valve-chest m is secured to the standard E.
The steain passes from the steam dome to the valve chest through the passage n,
Figures 3 and 12, in the valve casing, and thence through the valve n¹ and the
slots in the throttle valve G (Figure 12), which is operated by the governors, into
the space J which communicates with the valve-chest.
The exhaust steam from the cylinder passes into the condenser K where it is
condensed; the water of condensation thence passes to the space O¹ from whence it
it is drawn by the feed pump through the pipe t, and forced through the pipe u
into the boiler.
The condenser consists of a lower part M and of a casing L, (Figure 5) within
which, tightly fitted into the plate n, is arranged a number of tubes o around
which water is allowed to pass.
•
The exhaust steam from the cylinder passes through the space q (Figure 6) into
the cooling tubes o communicating with the space r. In this space is provided a
Bieve & for the purpose of uniformly distributing the condensed water.
8
The condensed water rises from the lower part of the space r through the
passage p into the upper space o¹. The portions of water containing oil rise from
the upper portions of the spacer laterally through the passages p¹ p² (Figure 8)
into the space O from whence they are removed from time to time. By constructing
the condenser in this manner it is rendered very compact and can be carried
directly by the steam dome, or the steam cylinder, instead of being detached there-
from. It will be seen that the feed pump draws the water through the pipe t.
The water necessary to make up for the loss caused by the constant circulation
from the boiler is drawn from the cooling vessel L by means of the cock & (Figure 5).
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. In a steam generator or boiler, the employment of straight hanging tubes
in combination with the box-shaped or upper portion of the said boiler consisting
of the frame, the top and bottom plates, the steam-dome, and the connecting bolts,
substantially as set forth.
Second. The construction of the surface condenser in such a manner that the
same can be mounted directly upon the steam dome or upon the steam cylinder,
substantially as set forth.
Third. The arrangement for purifying the feed water consisting of the space?
communicating on the upper side with the space O through the passages p¹, p³, and
on the lower side with the space O' through the passage p, so that the feed pump
draws the clean feed water from the lower part of the said space, substantially as
described.
· Fourth. The device for effecting the automatic regulation of the fire consisting
essentially of the piston h which is movable in a cylinder and which opens and

page_text: closes the flap or damper e when a valve connected with the piston is lifted,
substantially as set forth.
Fifth. The construction of the engine with the quadrangular steam dome and
steain cylinder cast in one piece, and the arrangement of the standard carrying the
crank shaft, all substantially as, and for the purposes, set forth.
Dated this 12th day of November 1884
HASELTINE, LAKE & Co.,
For the Applicants.