Improvements in Injectors.
Year: 1899

page_text: Date of Application, 27th Sept., 1899-Accepted, 2nd Dec., 1899.
COMPLETE SPECIFICATION.
Improvements in Injectors.
I, THOMAS MORGAN EYNON, of 15th and Clearfield Streets, Philadelphia, State
of Pennsylvania, United States of America, Mechanical Engineer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
There has heretofore existed great difficulty in designing double-tube injectors
for locomotive practice, owing to the fact that the dimensions given or required
by the different railroads in order to work in their standard pipe connections
on their locomotives are rigidly adhered to and are not varied under any condi-
tions and the object of the present invention is to construct a double-tube in-
jector in which the above requirements are all met and which can be readily
adapted to standard engines now in use.
To this end my improved injector consists primarily of a set of stationary suc-
tion and movable forcing tubes, said forcing tubes consisting of a steam nozzle
and a forcing combining tube, attached to said steam nozzle, said combining
tube having a cut-off barrel and suitable construction on its outside, whereby the
overflow valve is automatically operated during the reciprocation of said forcing
tube, while the cut-off barrel at the proper time, simultaneously cuts off the
passage of the water from the suction nozzle to the overflow, thus directing the
water to the main outlet.
It also consists in the employment of a check-valve constructed as hereinafter
described, which prevents the steam from going back to the water supply tank
should the injector, for any reason cease to work, said valve being provided with
a port sufficiently large so that in winter time by pulling back the injector handle
to its full stroke, sufficient steam will pass through said valve to prevent the
freezing of the suction pipe and also the freezing of the water in the supply tank.
It also consists of an inclined longitudinally movable forcing steam nozzle,
and an overflow valve operative in unison with said nozzle.
It further consists in making the overflow and suction pipe connection remov-
able, and in providing the injector casing with a plug and overflow nozzle which
are adjustable or interchangeable.
It further consists of novel details of construction, all as will be hereinafter
fully set forth and particularly pointed out in the claims.
In the accompanying drawing:
Figure 1 represents a longitudinal section of an injector embodying my inven-
tion, and
Figure 2 represents a transverse section of the same on the line - Figure 1.
Similar letters of reference indicate corresponding parts in the figures.
A designates the casing of the injector, the same being provided with the
steam inlet B and water inlet C.
D designates a passage leading to the valve E, which is adapted to rest on
the valve seat F, said valve being actuated by means of the rod G which has
[Price 8d 1

page_text: the yoke H attached thereto at one end, the other end of said yoke being secured
to the lever or handle J which is fulcrumed at K to any suitable fixed point.
L designates a passage leading from the valve seat F to the suction steam
nozzle M, which is controlled by the valve N operated from the exterior by any
suitable means and primarily controls the flow of steam to the nozzles M and I.
R designates a check-valve which is mounted upon a suitable seat above the
water inlet C and is provided with a port S, which is made sufficiently large
so that in winter time by pulling the handle J back to its full stroke sufficient
steam will pass through said valve to prevent the freezing of the suction pipes,
and water supply tank (not shown).
T designates a passage communicating with the nozzle P, said passage leading
to the opening U and thence by the passage V to the passage W, which leads to
the overflow passage X, having the nozzle Y and the opening Z which is closed
by the plug A', said nozzle and plug being interchangeable. The passage W
is controlled by the valve B which has attached to its upper portion the yoke or
frame C which has the stem or portion D', which is guided in the recess E¹
The yoke C¹ is also provided with inclined upper and lower ways F1 with which,
contact the substantially parallel inclined walls G¹ of the body H¹, said body with
the part L forming the forcing combining tube having the passage J¹ there-
through, said body H¹ having a shoulder K¹ which serves to throttle the passage U
and at the proper time cut off the flow of water from the nozzle P to the over-
flow Y.
The forcing combining tube composed of the rigidly attached parts H¹ and L'
is secured to the forcing steam nozzles N by means of sleeve M¹ so that the two
will move in unison, it being noted that the passage J¹ communicates with the
chamber T by means of the openings PI between the forcing steam nozzle and
the forcing combining tube. The opening through the nozzle N¹ communicates
with the steam chamber or passage L, by means of the openings N*, which are
open to steam after the valves E and E are unseated to the proper extent.
Q designates the outlet passage from the injector, the same being controlled
by means of the check-valve R', which is movable between the coupling devices S¹
as is evident, it being apparent that the lower or right hand extremity of the
passage through the cut-off barrel, is normally substantially in alignment with
the centre of the outlet passage controlled by the check-valve R¹.
The operation is as follows
If we assume the parts to appear normally as seen in Figure 1, it will be seen
that a pull on the handle J will unseat the valve E, and steam will fill the pas-
sage L and pass thence through the suction steam nozzle M, and the nozzle P
to the passage T, thence through the opening U and passage V, through the
passage W to the overflow chamber X, and the overflow pipe or nozzle Y.
Water will be drawn in through the suction opening C and will flow through
the nozzle P, passage T, opening U, passages V, W and X to the overflow Y.
If the handle J is now pulled further to the left the cut-off barrel K will move
toward the opening U and thus gradually throttle the same, thereby compelling
the water to pass through the passages T, P and to the outlet chamber Q
The handle J being moved further to the left the valve E will be unseated
and steam will flow through the port or openings N* to the forcing steam nozzle N¹
and the forcing combining tube passage J at substantially full pressure, and by
this time the passage U being closed by the cut-off barrel K¹, the water forced
into the chamber T will flow through the openings to the forcing combining
tube passage J' to the chamber Q and thence through the valve R¹ to the desired
point.
By constructing the injector casing as shown the overflow nozzle Y and the
plug A are interchangeable, it being understood that the threaded portions of
said nozzle and plug arc of the same diameter and similarly threaded. Also
the short suction pipe connection C (Figure 1), can be replaced by a longer con-

page_text: nection, thus making it possible with one body to adapt the injector to the re-
quirements of the locomotives of various railways.
It will be apparent that changes may be made by those skilled in the art which
will come within the scope of my invention, and I do not therefore desire to be
limited in every instance to the exact construction I have herein shown and
described.
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:
1st. In a double tube injector, a movable forcing steam nozzle, a forcing com-
bining tube attached thereto and an overflow valve in combination with means
for operating said valve simultaneously with the reciprocation of said forcing
steam nozzle and forcing combining tube.
2nd. In an injector, a movable forcing steam nozzle, and a forcing combining
tube having a cut-off barrel constructed on its outside, said forcing steam nozzle
and combining tube being inclined at an angle to the axis of the injector casing,
in combination with an overflow valve and connections common thereto and to
said barrel.
3rd. In an injector, the combination of a forcing steam nozzle, a forcing com-
bining tube movable in unison therewith, a cut-off barrel constructed on the
out side of said combining tube, an overflow valve and means for enabling said
barrel to cut-off the passage of the water from the suction nozzles to the over-
flow at the proper period.
4th. In an injector, a cut-off barrel constructed on the outside of the forcing
combining tube, means for reciprocating the latter, an overflow valve and con-
nections common to said barrel and valve whereby the latter is actuated in
unison with said barrel.
5th. In an injector, a forcing combining tube, inclined at an angle to the in-
jector casing, inclined upper and lower faces on said combining tube, a yoke
surrounding said tube, and having inclined ways engaging said faces of the
combining tube and an overflow valve engaging said yoke and operating simul-
taneously therewith.
6th. In an injector, a suction opening, a threaded coupling therein, and a
check-valve seated in said coupling and having a port therein.
7th. In an injector, an overflow chamber, openings therein, a plug and an
overflow nozzle engaging said openings respectively, said plug and nozzle being
interchangeable with respect to each other.
8th. In an injector, an overflow valve, an inclined combining tube having a
cut-off barrel constructed on its outside, and means for operating said barrel
and valve in unison.
9th. In an injector, a movable forcing combining tube having a cut-off barrel
and inclined upper and lower walls constructed on its outside, a yoke having in-
clined ways engaged by said walls and an overflow valve actuated in unison with
said yoke.
10th. In an injector, a casing, a forcing combining tube provided with a cut-
off barrel constructed on its outside, a forcing steam nozzle and a steam valve all
inclined at an angle to the axis of said casing, in combination with an overflow
valve and means for operating the latter and said barrel in unison.
11th. In an injector, a casing, an inclined forcing combining tube, having a
cut-off barrel and upper and lower inclined faces, a yoke engaging said tube,
guiding devices for said yoke and an overflow valve operated by said yoke.
12th. In an injector, a casing, a cut-off barrel, a passage in said casing adapted
to be throttled by said barrel, an overflow valve and means for operating said
valve and barrel simultaneously.
13th. The combination of an injector casing, and a check valve located in
the suction thereof, said valve having a port therethrough.

page_text: 14th. The combination of an injector casing, a check-valve located in the suc-
tion thereof, said valve having a port therethrough, and means for permitting
steam to flow through said port, whereby freezing in the suction pipe and supply
tank is prevented.
15th. In an injector, a casing, a longitudinally-movable forcing steam nozzle,
a forcing combining tube attached thereto, said nozzle and tube being inclined
relatively to the axis of said casing, an overflow valve, and means for operating
said valve in unison with said tube.
16th. In an injector, a casing," a longitudinally movable forcing combining
tube inclined at an angle to the axis of said casing, an overflow valve, connec-
tions common to said valve and tube, and means for actuating the latter..f
17th. In an injector, a casing, a longitudinally-movable forcing combining
tube, inclined at an angle to the axis of said casing, a passage through which
said tube extends, a shoulder on said tube adapted to throttle said passage, and
means for actuating said tube.
18th. In an injector, a casing, a forcing steam nozzle a forcing combining tube
attached thereto, a yoke engaging said tube, an overflow valve operated. by said
yoke, means for guiding the upper portion of said yoke, and means for operating
said nozzle, tube, yoke and valve.
19th. In an injector, a main steam inlet valve E, a steam valve E, a forcing
steam nozzle N¹, a forcing combining tube, the above parts being connected
together and movable in unison, suction steam nozzles, an overflow valve, and
means for enabling said valve to move in unison with said forcing combining
tube.
r
20th. In an injector, a casing, a longitudinally movable forcing combining
tube, an overflow valve, connections common to said valve and tube and located
within said casing, and means for actuating said tube.
21st. In an injector, an overflow chamber, threaded openings of the same dia-
meter therein, a plug and an overflow nozzle having threaded portions of the
same diameter engaging said openings, said plug and nozzle being interchange-
able according to requirements.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.