Year: 1887

page_text: Date of Application, 23rd Feb., 1887
Complete Left, 23rd Nov., 1887
Complete Accepted, 23rd Dec., 1887
We, JULES THIRY and GEORGE CHANTRENNE-SOIRON in care of Messrs. Bede & Cie.
29 Rue Philippe-le-Bon Brussels in the Kingdom of Belgium Engineers, do hereby
declare the nature of this invention to be as follows:-
This invention consists in certain improvements in injectors enabling the same to
be set in action, and also brought into full operation by means of one operating device
only, the same serving also for stopping the action of the injector.
The improvements consist in the plug of the steam jet, the said plug being formed of
the conical plug proper, having an axial bore and extended below in the form of a
hollow cylinder, and of a valve sliding in the said cylindrical portion, the travel of the
valve being limited by suitable guides in the cylinder. This valve carries at its
forward end a plug preferably of conical form adapted to close the axial bore of
the plug proper, its central portion consists of a toothed rack and its lower end forms
tongue sliding in a suitable recess or guide in the casing of the injector. A toothed
pinion mounted on a shaft operated by a hand-lever, gears with the said rack and
gives the required motion to the valve.
The operation is as follows the plug being set firmly in the steam nozzle, the
lever is turned for a small distance by which means the valve is drawn back and the
steam is enabled to pass through the central bore in the plug; when the action of
the injector commences, the lever is turned further until the valves arrives at its
rearward limit in the cylindrical extension of the plug, the continued motion of the
lever then draws back the whole of the plug and the injector attains its full action.
30-3
1
1000
HERBERT & Co.,
67, Strand, W.C.,
Agents to Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Injectors.
We, JULES THIRY and GEORGE CHANTRENNE-SOIRON in care of Messieurs Beae &
Cic. 37 Rue Philippi-le-Bon Brussels in the Kingdom of Belgium, Engineers do
hereby declare the nature of this invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement
This invention consists in certain improvements in injectors enabling the same to
be set in action and also brought into full operation by means of one operating device
only, the same serving also for stopping the action of the injector.
The improvements are more particularly comprised in the plug for closing the
steam jet, the said plug being composed of two parts, contrived and connected for
operation in the manner hereinafter described with reference to the accompanying
drawings.
The plug consists of a plug, properly so-called, A Figs. 1. 2. 4. 5 and 6 traversed
by an axial bore a a; and a second plug or valve B moved by suitable means axially
with regard to the bore a a for closing or opening said bore, said valve
being so guided with regard to the plug A and limited in its travel with reference
thereto, that the plug A is itself removed from its seat and replaced thereon by the
valve in the manner and for the purpose described above.
The connecting of the parts A and B may be performed in the following manner
or by other suitable means. The plug A is continued back from the jet in the form
of a cylindrical box or casing M. and the valve B is caused to slide therein being
limited by the stop v on the box M, in its movement away from the jet, and having a
conical nose adapted to enter and close the base of the bore a a on its movement
towards the jet. The valve B is provided with a suitable tongue or tongues whereby
it is guided accurately in the chamber of the injector.
We do not confine ourselves to any particular mechanism for operating the
improved plug, since it is, for this purpose only necessary that the plug valve B
should be capable of being moved reciprocally in the direction of the axis of the jet,
and a variety of means may be used to effect this.
Thus we may employ a cam or cams operated by a lover without the casing, said
We
cam or cams moving upon suitable abutments forming part with the valve B.
may also provide the valve B with an extension in the form of a rack, as shown and
cause a pinion C, operated by a lever outside the casing, to gear therewith. We may
also form the valve B as a part with an internally screw threaded muff or cylinder F,
and cause a screw threaded spindle V to gear therein, said spindle being held against
axial displacement and operated from without by a hand wheel, lever, or the like. In
this case, it is preferable to provide the spindle with several screw threads of
comparatively steep inclination, the axial movement of the valve B being accelerated,
while the stability of the plug in the desired position and the general solidity of the
whole is ensured by this method of operating the plug.

page_text: The function of the improved plug is as follows;-The plug being fully closed, the
plug proper is firmly upon its seat in the jet, and the valve is held closely over the
central bore a a of said plug.-On now causing the valve B to move back, steam
enters the jet through the central bore a a and the action of the injector is commenced
thereby. On further drawing back of the valve B the latter abuts upon the limit v
before mentioned, the plug A is then drawn back with the valve B and the injector
enters into full action. The closing of the valve B closes the plug A and stops the
action of the injector. The plug A will be held on its seat by the pressure of steam
in the chamber behind the plug, but if desired a spring may be arranged to assist in
holding the plug A on its seat, when the valve B is partially opened.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is ;-
1. In injectors, the combination of a plug having an axial bore, a valve capable of
limited axial movement with regard to said plug and mechanism for operating said
valve substantially in the manner and for the purpose set forth.
2. In injectors, the combination of a plug having an axial bore and an extension to
the rearward, a projecting portion on said extension a valve adapted to close said
axial bore and capable of axial movement with regard to said extension limited by
said projecting portion thereon, and mechanism for moving said valve reciprocally in
the line of its axis substantially in the manner and for the purpose set forth.
Dated this 23rd day of Nove
Dated this 23rd day of Novembe
JULES THIRY.
GEORGE CHANTRENNE-SOIRON.
By Herbert & Co.,
18, Buckinghani Street, Strand, London, W.C.,
Agents to Applicants.