IMPROVEMENTS IN APPARATUS FOR GENERATING STEAM AND FOR OBTAINING MOTIVE-POWER THEREFROM
Year: 1883

page_text: LETTERS PATENT to Herbert John Haddan, of Kensington, Middlesex for
an Invention of IMPROVEMENTS IN APPARATUS FOR GENERATING STEAM
AND FOR OBTAINING MOTIVE-POWER THEREFROM communicated to him
from abroad by Auguste Albert Daussin, of Lille, France,
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan
at the Office of the Commissioners of Patents on the 5th January 1883.
HERBERT JOHN HADDAN, of Kensington, Middlesex, "IMPROVEMENTS IN
APPARATUS FOR GENERATING STEAM AND FOR OBTAINING MOTIVE-POWER
THEREFROM A communication to me from abroad by Auguste Albert Daussin,
of Lille, France,
"
This invention has for its object to utilizo the waste heat of ovens, stoves,
furnaces or other fireplaces for obtaining motive power by means of steam. The
apparatus used for this purpose comprises some or all of the following parts:
1. a steam generator adapted to be applied easily to an oven, furnace or other
source of heat.
2. A plate or frame serving as a support for the generator and mechanism,
and which may also form a cover for the fire-place or a hood for the
generator.
3. A hollow column serving as a steam-dome and as a stand for the oscillating
or other cylinder. It may be fixed on the plate and contain the feeding
apparatus.
4. A pipe preferably of flexible material, for conducting the steam to the cylinder
or cylinders.
5. An automatic feeding apparatus or regulator, which may consist of a
cylindrical box mounted on an axle and having a face perforated with two series
of holes or two concentric grooves, this face being held tight against a perforated
contact-piece by means of a spring, and turned by the motor, so as to establish
communication (through the said grooves or perforations) between the box and the
water reservoir, or between the box and the interior of the column and the generator,
ns may be required.

page_text: 6. A slide-valve which may be formed of a block mounted on one of the
trunnions of the oscillating cylinder and held against a plane faco of the cylinder
by a spring, this valve being connected with the column and the gonerator (and
the superheater, if there is one) by a flexible pipe which allows the valve to follow
the action of the spring and to recede from its seat when the steam-pressure on a
given surface of the slide valve surpasses the tension of the spring.
The distribution of steam for the double-acting cylinder is effected by providing
the slide valve and the valve face with suitable apertures. The slide valve may
have any suitablo shape and be provided with a lateral motion for obtaining
expansion.
7. One ore more steam cylinders, preferably oscillating.
8. A brake regulator which consists chiefly of a shaft, bearing a driver and held
between points and on which shaft is mounted a loose pulley driven from the main
shaft of the engine and a movable disc actuated by a lever and two springs, so
that the springs press the disc and the pulley against a shoulder or friction-plate
mounted on the shaft, when the lever is drawn out of contact with the disc by
means of a spring and pedal, and release the pulley, when the lever is applied to
the disc, under the influence of a weight or spring. The steam generator may be
constructed in various forms. It may for instance have a cylindrical shell fixed to
the frame or bedplate serving as a cover, and tubes suspended from or otherwise
connected with the shell. Or it may be composed of two superposed annular
receptacles connected with each other by tubes.
In either case superheating tubes may be applied, placed between the generator
and the bed plate, or surrounding the fire-place or arrayed in any other suitable
position. The generator may be composed of two concentrical coils, one of which
serves as a superheater..
Or the generator may form a hollow-column composed of an inner and an outer
shell or casing mounted on the bed-plate and supporting tho mechanism, the interior
of the column being occupied by a superheating tube.
Or the generator and motor may be fixed to a stove-pipe, the generator being
formed by a helical pipe, The box of the feeding apparatus is made to hold more water
than is evaporated between two periods of its action, and the water reservoir is
situated higher than the box which is again placed higher than the boiler, so that
the water may flow by gravitation from the reservoir into the box and from the
latter into the boiler.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Herbert John Haddan in the Great Seal Patent Office on the
5th July 1883.
HERBERT JOHN HADDAN, of Kensington, Middlesex,
FOR GENERATING STEAM AND
"
IMPROVEMENTS IN
MOTIVE-POWER
FOR OBTAINING
APPARATUS
THEREFROM ">
a communication to me from abroad by Auguste Albert Daussin,
of Lille, France
This invention has for its principal object to produce motive power by utilizing
the heat given off by stoves and ranges used for industrial or domesctic purposes;
that is to say the machines of the system herein described are not provided with a
special furnace, but are constructed in such a manner that they may be connected
with stoves or ovens without interfering with the original purpose of the same.
The utilization of the heat of such a stove for motive power forms the base of
the system bercinafter described.
In the accompanying drawing which illustrates the invention
Figs. 1 and 2 represent a motor the construction of which is based on the system
of the inventor.
This motor is composed of the following parts.
A steam generator A (see Figs. 1 to 8) of special shape allowing the same to be
placed on the openings of a kitchen range or heating stove.
The generator as represented in Figs. 1 and 2 has a cylindrical shell A from the
base plate of which project a number of pipes.
The generators represented in Figs. 3 to 8 are modifications of the above.
The boiler A represented in Fig. 3 is provided in its interior with a number of
beating tubes.
Figs 4 and 5 represent a boiler composed of two circular vessels A A' connected
together by means of upright tubes.
These generators are completed by superheating pipes placed between the boiler
and the upper part as shown in Figs 3 and 4, while in the modification shown in
Fig. 5 the boiler is enveloped by the superheating pipes.
Fig 6 represents a generator, formed of two concentric helical pipes, the inner
ipe serving as a superheater.
Fig 7 represents a boiler composed of a cylindrical column formed by two
oncentric shells and placed on a platform B; the inner space is occupied by a
uperheating pipe.
Fig 8 represents a steam motor placed directly at the stove pipe;
A is the generator in the shape of a helical tube, C is a boiler-feeder, D is a flexible
ipe, and E a steam cylinder.
A further part of this motor is the plate B represented in Figs. 1 to 7 and
erving partly as a cover plate for the openings of the stove or range, partly as a
ase plate of the apparatus and as the end plate of the boiler, if required.
This connection of the boiler and the mechanism with a base plate serving at
e same time as a cover plate for the openings of the stove or range is another
cculiarity of this invention. It is this combination which permits the working of
e motor on a range.
In Figs. 1 to 9 and in Figs 12 is shown a hollow column C. serving not only as
steam-dome, but also as a stand for the oscillating cylinder.
The column is mounted on the base plate and contains the water distributing
paratus. To this hollow column is also joined the flexible pipe D, through which
6 steam is conducted to the oscillating cylinder E.

page_text: This column may be made in different shapes, it may also be made in one piece
with the boiler or replaced by the boiler.
Another essential part of the machine, represented in Figs 2, 9 and 10, is the
automatic and self regulating water distributing apparatus consisting chiefly of the
distributing valve F mounted on the axle G.
The valve face of F is perforated with two series of holes (see fig 10) or with
two grooves g and h, and is pressed and maintained by means of a spring I against
the part J provided with holes k, l, m, n.
When the slide valvo F is turned by the engine, by means of suitablo valve-
gear, the grooves gh according to the combinations they form with the holes 1
k. l m n establish communications, now between the slide valvo F and the water
reservoir O, and then between the valve F and the interior of the column and of
the boiler.
5
Supposing the valve F and the part J in the position shown in Figs. 9 and 10,
the water contained in the reservoir O flows through the pipe p, passes through 1
the hole m and the groove h into the valve F, fills the same and condenses a part
of the steam contained in it, while the rest of the steam escapes through the pipe q
into the reservoir O, where it is completely condensed. Owing to this communica-
tion between the reservoir O and tho chamber F through the pipo g, nothing
hinders the entrance of water into the chamber F.
If the valve turns so that the grooves g h occupy the position shown in dotted
lines (fig 10), the communication with the reservoir is interrupted, and the
distributing valve F communicates with the column C. The water enters now
the column through n; this admission and dischargo is facilitated by the pressure
of the steam, entering the valve-box through the apertures and h, on the level
of the water contained therein.
The distributing valve F is turned by the driving shaft by means of a ratchet
secured to the latter, which ratchet engages in a toothed wheel R" mounted on the
shaft of the distributing valve F.
This arrangement has for its purpose to permit the driving shaft to perform
several revolutions, while the shaft of the distributing valve F makes only one
revolution, the capacity of the valvo F being large enough to furnish a quantity
of water sufficient for the production of steam for several revolutions of the
engine.
From the above it may be seen :
1.) That the water distributing apparatus is filled with water at each revolution.
2) That at each revolution of the distributing apparatus a certain quantity of
water enters the generator.
3.) That owing to the principle of communicating pipes the quantity of water
discharged is equal to the quantity required, the level of the water in the
distributing apparatus being neither higher nor lower than that of the water in
the column.
4, That any excess of water remains in the distributing apparatus till the
next revolution of the distributing valve.
It is evident that the size or external shape of the machine may be modified
without departing from the principle of this invention. The distributing apparatus
may, for instance, be placed outside the column or of the generator, as shown in
Fig 11, and the said distributing valve may be made to perform a circular motion
by means of suitable driving gear, as represented in Figs 9, 10 and 11.
In Fig 9 is furthermore shown an arrangement for automatically filling the
reservoir. The Intter being hermetically closed, the vacuum established in the
rame is sufficient to draw water from a reservoir situated underneath.
The distribution of steam is effected by the disc R (Figs 2 and 12) mounted on
a trunnion of the cylinder and pressed against the valve-face of the cylinder by
a spring S, which allows the disc to recede from the cylinder when the steam
pressure exeeds a given limit.
The projecting arın y adapted to slide in a groove z prevents the disc from

page_text: turning on the trunnion of the cylinder. Steam is admitted from the column C
through the flexible pipe D and the two ports t opening towards the cylinder. At
the side of every port the disc has a similar opening v, communicating with the
atmosphere through the pipe x. Between vand x terminates a port u leading to
the respective end of the cylinder, one of the two ports being situated in the upper
and the other in the lower part of the cylinder. When the cylinder is in its
middle position, both ports are covered by the disc R and communicate neither
with the pipe R nor with the exhaust pipes x.
:
As soon as the crank leaves its dead centre and the cylinder departs. from its
vertical position by turning on its trunnions or pivots, for instance to the left
(Fig 12) the lower port u will arrive opposite the aperture t of the disc R and
receive fresh steam through the pipe D, which steam supply continues as long as
the cylinder is on the left side of its middle position, that is to say, until the
piston has finished its upstrocke; at the same time the upper port u communicates
in a similar manner with the exhaust pipe. During the downstroke of the piston
the cylinder is deflected to the left, wheroby the upper port receives fresh steam
and the waste steam escapes at the bottom.
The inlet and outlet openings are largest in the extreme positions of the
cylinder, which occur approximately at midstroke, after which they gradually
become smaller.
Although the engine illustrated by Fig. 2 has only one oscillating cylinder,
several oscillating cylinders may be used without departing from the invention.
A further improvement consists in the brake-regulator represented in Fig. 13,
but not shown in the other figures
The regulator consists chiefly of a shaft a b on which is mounted a loose pulley c
and a kind of disc d. A spring fresting against an arm or driver e, keyed on the
shaft, presses the disc d against the pulley c, which is pressed against the shoulder b
of the shaft by a spring g
The brake is actuated by a lever hij and works in the following way.
The motor is connected with this brake by means of a rope or belt passing over
the fly-wheel of the motor and over the pulley c of the regulator.
The motor drives the pulley c. The pulley is therefore, so to say, keyed on
the shaft by means of the arm or driver e the disc d and the springs fand g.
The end of the lever hij is connected with a treadle. By depressing the
treadle, the armi is removed from the disc d, but as soon as the pressure on the
treadlo ceases, the weight K suspended from the lever j and which may be replaced
by a spring is allowed to act, the arm i presses against the disc d, forces it back
against the arm, compresses the spring, and releases the spring g.
This compression of the spring fand release of the spring g has the following
effects.
1. An instantaneous or gradual stoppage of the axle a b, owing to the pressure
of the lever ij on the disc d.
2. Continued rotation of the pulley c without turning the axle, which is stopped,
owing to the pressure of the arm i on the disc d.
3. Regulation of the motor owing to the arrangements above described.
CLAINS
1. Utilizing for the production of matioun
3
1. Utilizing for the production of motive power the heat given off by domestic
stoves, hearths, or other heating apparatus by means of a hearth-plate B, in combi-
nation with a boiler A, hollow column or steam dome C, oscillating cylinder E,
distributing valve R and feed water distributing chamber F, substantially as and
for the purpose described.
2. The combination of the column C forming a steam-dome, and of the hearth-
plato B, with a steam generator A provided with the suspended tubes,, and to
which the hearth-plate B serves as a cover, as well as the modifications of the said
generator, as represented by Figs 3 to 8,

page_text: 3. The use, inside the column C or generator A, of an oscillating feed water
chamber F provided with grooves gh in combination with openings km ln in
the said column or generator, and with pipes p, q communicating with the tank 0,
substantially as described.
4. A disc valve R mounted on the pivot or trunnion of an oscillating cylinder, &
said valve being connected with the steam dome or column by a flexible pipe D
and held in place by a spring S, so as to allow of the removal of the valve
from the cylinder after the pressure of the spring is overcome, substantially as
described.
5. The combination of the ports vandt of the disc valve R with the ports of 1
the cylinder E, substantially as described and for the purpose of admitting fresh
steam to each side of the piston.
6. The combination of the motive power engine with a governor comprising a
pulley mounted on a shaft a, b, together with the springs ƒ and g the carrier e
and the brake disc i, the said pulley being set in motion from the fly-wheel of the 1
engine and serving to transmit motion to the shaft a b with a speed made variable
by means of a pedal, substantially as described.
In Witness whereof I the said Herbert John Haddan have hereunto set my
hand and seal this 5th day of July A.D. 1883.
TT
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