Improvements in Injectors.
Year: 1889

page_text: Date of Application, 25th Jan., 1889
Complete Specification Left, 21st Oct., 1889-Accepted, 23rd Nov., 1889
PROVISIONAL SPECIFICATION.
Improvements in Injectors.
We, WILLY ADOLF WEBER and JOHANN OTTO WESTPHAL, of Neustrasse
51, Hohenfelde, Hamburg, Germany, Engineers, do hereby declare the nature of
this invention to be as follows:-
This invention relates to improvements in the class of injectors which are
commonly known as of the re-starting type the essential feature of which consists
in a cone and flap for varying the size of the opening to establish the jet; and
the object of our invention is to provide means for securing the instantaneous
re-starting of the injector, as soon as steam and fluid are permitted to enter the cone.
In contrast with the injectors of the type mentioned, the injector of our invention
is provided with a fixed cone separate from the ordinary intermediate cone which
is formed of either a fixed and a yielding part or of two or more yielding parts.
This intermediate cone is preferably connected with the discharge or delivery cone,
and its yielding part or parts are hinged to it so as to form a flap or flaps opening
towards the fixed cone above mentioned. The hinge-device of such flap or flaps
is so arranged, that the current or flow of liquid forced by the steam through the
fixed cone when touching the inner surface of the said flap or flaps will act upon
a lever, the fulcrum of which is the hinge of the flap or flaps.
In consequence of this arrangement, the flap or flaps of the intermediate cone
will automatically and instantaneously fold together under the influence of the
mixture of steam and fluid supplied from the fixed cone, and the feed will at once
be established.
Dated this 25th day of January 1889.
WILLY ADOLF WEBER.
JOHANN OTTO WESTPHAL.
COMPLETE SPECIFICATION.
Improvements in Injectors.
We, WILLY ADOLF WEBER and JOHANN OTTO WESTPHAL, both of Neustrasse,
51, Hohenfelde, Hamburg, Germany, Engineers, do hereby declare the nature of
this invention and in what manner the same is to be perforined, to be particularly
described and ascertained in and by the following statement :-
Our invention relates to improvements in that class of injectors which are commonly
known under the name of restarting and exhaust-steam injectors; and the object of
our invention to provide means for securing the instantaneous restarting of the
injector as soon as steam and fluid are permitted to enter the receiving cone.
We attain this object by the peculiar construction and arrangement of parts
forming our improved injector illustrated in the accompanying drawings, in which
Fig. 1 is a vertical section of an injector provided with our improvements.
Fig. 2, a plan of the improved cone, the essential feature of this invention.
Fig. 3, a vertical section of the slightly modified inner parts of our injector, and
Fig. 4, a plan of the principal cone.
Similar letters refer to similar parts throughout the several views.
The injector consists of the body A, with the branch A' for the water-inlet and
the branch A2 for the overflow, the latter being provided with a check-valve; the
cone c for the entrance of steain, the lifting and mixing cone a and the receiving
cone D connected to the discharge cone g.

page_text: In contradistinction to the injectors of the older type mentioned, our injector is
provided with a fixed and rigid invariable mixing-cone a separate from the inter-
mediate receiving cone D, which consists either of a stationary part d and a yielding
part or of two or more yielding parts d' d which serve to enlarge or contract the
sectional area of the steam and water passage automatically.
This intermediate receiving cone is preferably combined with the discharge-or
delivery-cone g; and the yielding part or parts of the former are hinged thereto in
such a manner as to form a flap or flaps opening towards the mixing cone a; and the
hinge or hinges ff' respectively of such flap or flaps are so arranged that the current
or flow of fluid, forced by the steam through the lifting and mixing cone a, when
touching the inner surface of the said flap or flaps d, d', in the direction of the arrows,
will act upon a lever, the fulcrum of which is the hinge for f1 of the flap or flaps.
These flaps, when closed, entirely surround the overflow which is, in this position,
out of communication with the body A of the injector.
In consequence of this arrangement, the flap or flaps of the intermediate receiving
cone D will automatically and instantaneously fold together under the influence of
the mixture of steam and fluid striking against the inner surface of the oscillating
part or parts d', d²; and the jet will then and there be established without fail.
In contradistinction to that class of injectors which is, for instance, represented by
the British Letters Patent No. 316 1880, wherein the closing of the flap, respectively
the contraction of the water and steam passage of the mixing cone is caused only
when the jet is completely established at the overflow between the mixing and dis-
charging-cone, and after the jet has obtained its maximum velocity; according to
our present invention the mixture of steam and water when entering into the cone D
will at once and directly cause the movable part or section or sections d¹ d² of the
same to close perfectly, before the jet is established. In the older constructions of
this class of injectors heretofore mentioned, the oscillating section of the cone is
maintained closed only by the sucking action of the jet, so that, in case of a
diminution of the pressure in the casing of the injector and of a higher pressure
within the cone, the oscillating flap will open and thereby the function of the injector
be instantaneously disturbed. This will always happen, if the overflow-branch A² is
provided with an air-tight valve, and therefore it has become customary to cut a
groove or passage into the seat of the air-valve, in order to allow a certain amount
of air to enter into the casing of the injector and thereby obviating the establish-
ment of a vacuum, around the two-part combining cone, when the injector is in
operation.
However this remedy is accompanied by the disadvantage, that in feeding steam-
boilers, a considerable quantity of air is discharged with the water into the boiler,
and therefore such injectors could not be successfully employed with condensing
engines.
All these disadvantages are entirely overcome by our present invention, as on
account of the lever action depending upon the particular arrangement of the
movable parts of the receiving cone, the latter is adapted to close and consequently
to instantaneously restart the injector at the very moment the steam and water enter
into this cone without prejudice of pressure surrounding the cone in the casing of
the injector. For this reason our injector may be provided at the overflow branch A'
with an absolutely air-tight check valve, without altering the exact working of the
injector, and in consequence thereof our injector will feed water of considerably
higher temperature than any such injector of the older type mentioned which, by
reason of their imperfect condensation of steam will not permit the supply of water
of more than 18° C. if only exhaust steam is employed.
The principal feature of our invention consists in pivotting the section or sections
of the receiving-cone 1 at their lower ends to the upper end of the discharging-
cone provided the injector is to stand upright as shown in the drawing. By means
thereof the movement of such part or parts is rendered certain, especially in the
starting of the injector. By extending the ends of said part or parts up to the

page_text: lifting or combining cone a they greatly aid in the accomplishment of the desired
results. Our injector may also be employed in any position without materially
altering its effect.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what
we claim is :-
1. In steam injectors, the combination with the lifting or combining and dis-
charging cones, of the receiving cone having a pivotted section or sections secured
to said discharging cone, and extending to said lifting or combining cone,
substantially as and for the purpose set forth.
2. In steam injectors, the combination with the lifting and discharging cones, of
the sectional receiving cone D having a hinged part or parts secured to the discharge
cone, substantially as set forth.
1
1000
PHILLIPS & LEIGH,
22, Southampton Buildings, Chancery Lane, W.C., Agents for the Applicants.