IMPROVEMENTS IN INJECTORS, SERVING ALSO AS CONDENSERS
Year: 1880

page_text: LETTERS PATENT to William Morgan-Brown, of the Firm of Brandon and
Morgan-Brown, Engineers and Patent Agents, of 38, Southampton Buildings,
London, and 1, Rue Laffitte, Paris, for the Invention of "IMPROVEMENTS
IN INJECTORS, SERVING ALSO AS CONDENSERS." A communication from abroad
by Gasparo Mazza, of Turin, Engineer.
PROVISIONAL SPECIFICATION left by the said William Morgan-Brown at
the Office of the Commissioners of Patents on the 14th February 1880.
WILLIAM MORGAN-BROWN, of the Firm of Brandon and Morgan-Brown, Engineers
and Patent Agents, of 38, Southampton Buildings, London, and 1, Rue Laffitte,
Paris. "IMPROVEMENTS IN INJECTORS, SERVING ALSO AS CONDENSERS." [A com-
munication from abroad by Gaspare Mazza, of Turin, Eugineer.]
The object of this Invention is to produce an injector which, besides its regular
functions as boiler feeder, can be used also as condenser to condense the exhaust
steam of an engine. For this purpose the apparatus is provided with an additional
cone, and suitable cocks or valves and passages for the admission of the exhaust
steam. The two ordinary cones of injectors are made moveable lengthwise, and
their relative positions are regulated together or separately by means of excentric
pins or other suitable appliances, in order to make the apparatus more adapted for
its operation, in one case as condenser and in the other case as injector.
ог
The accompanying Drawing represents an apparatus constructed according to
this Invention. A is the connection through which the feed water enters; V is
the pipe admitting steam from the boiler; and Q is the connection with the boiler
through which the feed water is forced into the latter part the cones
passages M, N. These cones are moveable endwise, and their position is regulated
by excentric pins extending from the ends of the shafts H and K, which are or may
be connected together by a link band moved by means of a key or lever. Behind
the cone M is arranged a cone C, into which opens the passage S controlled by the
cock R. The exhaust steam from the engine arrives through this pipe S, and it
will be noticed that before being mingled with the steam coming through the
pipe V from the boiler the exhaust steam comes in contact with the feed water,
whereby it is rapidly condensed and serves at the same time to heat the feed water
to a certain extent.

page_text: '
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Morgan-Brown in the Great Seal Patent Office on the 16th
April 1880.
WILLIAM MORGAN-BROWN, of the Firm of Brandon and Morgan-Brown, Engineers
and Patent Agents, of 38, Southampton Buildings, Chancery Lane, London, and
1, Rue Laffitte, Paris. "IMPROVEMENTS IN INJECTORS, SERVING ALSO AS CON-
DENSERS." (A communication from abroad by Gaspare Mazza, of Turin, Engineer.)
The object of this Invention is to construct an injector which works like an
ordinary injector, and which can be used to condense the exhaust steam from a
steam engine.
In order to make my Invention clearly understood I will describe it conjointly
with the four Figures of the accompanying Drawing, of which Figure 1 is a lateral
elevation of my improved injector in section through the line t, u, Figure 2.
Figure 2, a plan of the same in section through 2, w, Figure 1.
Figure 3, an end elevation idem in section through x, y, Figure 1, and,
Figure 4, a lateral elevation in section of a modification made in certain parts of
this injector.
a is the pipe through which the feed water passes; v is the pipe for admitting
the steam, and for this purpose it is connected with the steam boiler. This pipe v
corresponds to tho steam inlet pipe of the ordinary injectors. is the pipe which
conducts the exhaust steam from the cylinders; r is a large cock which establishes
a communication between the waste-steam pipe and the condensing injector;
g is a pipo which conducts the mixture to the boiler, as in all the ordinary
injectors.
In order to work the apparatus as an ordinary injector the cock r is closed, then :
the admission of steam into the central tube is opened. The amount of water
introduced is regulated by the eccentric h, which is worked by a rod or by a lever
with a handle.
By turning the eccentric / the cone or nozzle m is moved, and thus the port
admitting the water is regulated.
k is a second eccentric, by means of which the distance between the cone m and
the cone n is regulated.
It is advantageous to unite the rods of the eccentrics h and k by means of a
link b, so as to work them together.
It is also advisable that when the apparatus is started the cones m and n should
be at their greatest distance apart, and that it be reduced to its minimum when
the injector is working.
To obtain this result the eccentric k has a longer throw than the eccentric h.
By turning the eccentric for the purpose of regulating the water the cone m
moves more slowly than the cone n, and the distance between the two cones
diminishes whilst the port hole for the admission of the water is being restricted.
The different stroke of the eccentrics h and k is made for attaining this object,
which is particularly favourable for rather tepid foed water.
Still these two eccentrics are not indispensible for the proper working of the
injector, for the said injector can work the one eccentric by making only the
cone m moveable and by fixing the cone n. It may also be made to work both
eccentrics h and k, being suppressed whilst both cones m and n are fixed or
stationary.
Naturally it will also work if both cones m and n are moveable, but with an
equal motion, which is effected by attaching them to the link b, both eccentrics h
and k having the same stroke, or by fixing them to pieces which hold them
internally in a fixed manner.
The injector works as a condensor if the large cock r is opened whilst the
machine is at work.

page_text: The waste steam passes through the pipe a into the cone c and is condensed by
its contact with the water. The condensed mixture meets the central steam jet
coming from the boiler through the pipe v, and is driven by this steam jet in the
boiler.
Therefore the injector as above described can work as an ordinary injector or as
a condensor and an injector at the same time.
The apparatus works both easier and better when the injector acts also as a
condensor, because a certain amount of vacuum is formed by the condensation of
the waste steam in contact with the water. The speed of the waste steam jet is
considerable, and it is communicated to the feed-water, thus aiding in imparting to
the same the requisite speed for being driven in the boiler.
Instead of a single cone c two or three concentric cones may be arranged as it is
shown in Figure 4, so as to bring the steam little by little in contact with the
water. The arrangement shewn in Figures 1, 2, and may be better on account
of its being simpler.
This condensing injector is made to act also by suction if a needle is added in
the central steam cone.
Having thus explained the nature of my improvements, as well as the best means
that I am acquainted with for putting the same into practice, I would have it
understood that what I claim is,-
Firstly. The construction of condensing injectors in which the waste steam jet
passing in an annular shape through one or more concentric cones meets the feed
water, and is condensed by it before meeting with the central jet of steam coming
from the boiler.
Secondly. The arrangement of the cone m and n, by means of which the distance
between the same whilst regulating the port hole for the admission of the water,
whether this result be obtained by means of two eccentrics, euch having a different
stroke, or by any other means.
Thirdly. The embodying in one single apparatus an ordinary injector with a
condensing injector, and,
Fourthly. I expressly declare that this my condensing injector is perfectly
applicable to every kind of steam boiler and engine, whether condensing or not
condensing. For condensing steam engines it will be necessary to put over the
overflow pipe of the injector one or two valves, by which the air will be hindered
from going into the injector and through it in the condenser when the injector is
not started and at rest.
In witness whereof, I, the said William Morgan-Brown, have hereunto set my
hand and seal, this Sixteenth day of April, in the year of our Lord One
thousand eight hundred
eighty
WILLIAM MORGAN-BROWN. (L.S.)