Improvements in and relating to Steam Injectors for Supplying Water to Steam Boilers and the like.
Year: 1896

page_text: Date of Application, 17th Nov., 1896-Accepted, 8th Feb., 1897
Improvements in and relating to Steam Injectors for Supplying
Water to Steam Boilers and the like.
We, PATRICK BROWNLEY, a subject of the Queen of Great Britain, residing
at No. 700 East 137th Street in the City of New York, County and State of
New York, United States of America, Inventor, and FRANOIS STICKER, a
subject of the Emperor of Germany, residing at No. 50 East 84th Street in the
City of New York, County and State of New York, United States of America,
Inventor, do hereby declaro 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 relates to steam-injectors, having reference to the class known as
"double-jet" or "lifting and forcing" machines.
It has been found that the starting and working capacity of a double-tubo
injector is increased by supplying steam simultaneously to both the "lifter" and
"forcer," the latter serving in conjunction with the former to lift the water in
starting the injector. It has also been found that this result is capable of
successful accomplishment by reason of the fact that no check-valve for the
overflow is employed, the only pressure to be overcome being that of the
atmosphere.
In the present invention it is sought to control the working capacity of the
injector by regulating the quantity of steam supplied to the machine, making
the supply of water commensurate therewith, the action of the lifter and forcer
being uniform. This we accomplish by means of a steam-inlet cock having
ports of different capacity, said cock being under the control of a single lever.
By the employment of a cock in lieu of a valve the injector can be easily started
and controlled, as there is but little pressure to overcome in turning the cock, the
latter presenting substantially no resistance.
A further object is to so connect the steam-inlet cock with the overflow cock
that both cocks will work in unison, or said steam-inlet cock may be adjusted
without affecting the position of the overflow cock. This latter is connected to
the operating lever by a rod which can be moved with, or independently of said
lever, or the latter may be moved independent of said rod, when it is desired to
change the position of the steam-inlet cock without moving the former. In this
way the head or supply of steam is readily and easily regulated, or by means of
said rod tbe overflow-cock can be held stationary and the inlet cock opened to its
full capacity thereby causing the steam to heat the water in the suction-pipe.
The invention will be hereinafter fully set forth and particularly pointed out in
the claims:-
In the accompanying drawing :-
Figure 1 is a view in side elevation of our improved injector. Figuro 2 is an
end view thereof.
Figure 3 is a central vertical longitudinal sectional view.
Figure 4 shows the relative positions of the steam and overflow cocks after
lifting water.
Figure 5 shows the positions of said valves when the injector is working.
Referring to the drawing, A designates a casing or casting; a the steam-inlet ;

page_text: a' the water-inlet; a' the overflow-opening; a' the channel leading to the latter;
and a the outlet-opening leading to the boiler.
B designates the "forcer" composed of the usual steam-tube b, combining
tube b' and delivery-tube 6; and C is the "lifter" comprising the steam-tube d,
combining-tube d and delivery-tube d. The two steam-tubes are mounted in one
of the walls of a steam-chamber D into which latter extends the steam-inlet a.
E is the steam-inlet cock located at the top of steam-chamber D and extending
transversely through the casing, said cock fitting and rotatable on au interior
curved seat of said casing. This cock is formed with a transverse port or
opening e', the walls of which are slightly tapered, aaid opening being designed,
when the cock is so turned to its full extent, to coincide with branches of tho
steam-chamber intercepted by said cock. A second, very small, port is also
formed in this cock, said port cousisting of two corresponding small holes, in
liue with one another, formed in the sides es, e, of the cock. The soat e of the
latter is such that by giving to the cock a slight turn, as in starting the injector,
only this small port will be brought into line with the branches of tho steam-
chamber, thus allowing but a small quantity of steam to pass to the injector. But
by giving a further turn to said cock the large port or opeuing is caused
to coincide with said brauches, thus permitting the full head of steam to pass to
the machine. This quantity, however, can be controlled by giving a reverse
movement to the cock, sufficient to cover up or close portions of the port or
opening thereof. It will be noted that no valve is used for controlling the
admission of steam to the forcer independently of the supply to the lifter. Hence
the supply to both sets of jets is always uniform. It follows therefore that by
controlling this steam-supply the effect upon the forcer and lifter is equal; thereby
regulating the lifting capacity of the injector by the power of the forcer.
of
is the overflow-cock located transversoly in the casing at the interception of
the delivery-chamber of the forcer and outlet to the boiler and the overflow
passage-way of the lifter and overflow-opening a, said cock being provided with a
main port or opening and two cut-aways forming additional ports for the
overflow from the forcer. When positioned as shown in Figure 3, the wall
this cock closes the outlet to the boiler, rendering the use of a check-valve
unnecessary, and after the water is lifted and the cock partly turned, the other
wall of said cock instantly cuts-off the overflow from the lifter (see Figures 4
and 5) while the ports and permit of a gradually cutting off the overflow
from the forcer, all as fully set forth in the above noted application for patent.
The movement of this overflow-cook is designed to be uniform with that of the
steam-inlet cock, and the latter is alse capable of being moved independently of
the overflow-cock, either for the purpose of regulating the supply of steam, or of
heating the water in the suction-pipe.
G designates a hand-lover, having a lower forked end g fulcrummed by links g¹
to the lower portion of the casing 9. On a side-stud g of this lever is loosely
mounted a bar g to the upper end of which is connected one end of a pitman g
the other end of the latter being connected to an arm 9° carried by the steam-
iulet cock E. The other end of this arm is bent to form a finger designed to
engage stops and 9 to limit the movements of the cock. To the lower end of
this pivotted bar is pivotally connected a long rod & having a handled end ',
the other end of said rod being connected to an arm carried by the overflow
cock F. The free end of this arm is also bent to form a finger to limit the
movement of the cock by engaging stops and A. In drawing outward on the
lever G, the two cocks E and F are caused to rotate, the former in advance of
the later and after the lever has reached the outer limit of its movement, the
operator cau, by grasping and holding the handled end of rod h, hold the over-
flow cock as against turning and move the steam-inlet cock independently, the
bar g turning on its pivotted connection to said rod.
In practice, when the machine is not in use the two cocks occupy the positions
shown in Figure 3, the lever and its connections to said cocks being as shown in

page_text: Figure 1. It is obvious that any movement of the lever will first affect the steam-
inlet cock before moving the overflow-cock. Hence, in operation, the operator
just pulls outward on the lever to a slight extent, causing the rotation of the steam-
cock sufficient to throw the small port in line with the branches of the steam-
chamber, thus admitting but a small head of steam to the two sets of tubes. The
steam passing through the latter and through the respective overflow-outlets of
the lifter and forcer to the overflow-opening, overcoming atmospheric pressure a
vacuum is orcated within the machine, causing the water to be lifted thereinto.
As this is accomplished the lever is further moved outward, throwing the two cocks
into the positions shown in Figure 4, the overflow-cock instantly outting off the
overflow of the lifter, and gradually closing that of the forcer, and upon further
moving said lever the main port of the steam-inlet cock is brought into position
with the branches of the steam chamber, allowing a full head of steam to pass to
the machine, and at the same time the overflow-cook is brought into the position
shown in Figure 5, opening up direct communication between the delivery-chamber
of the forcer and the boiler-outlet, the overflow-openings being entirely closed by
the sides of said valve. There being no valve to unsent and the steam having to
overcome only the atmospheric-pressure both sets of tubes will act conjunctively
in lifting the water. The overflow-cock works in unison with the steam-inlet cock
and the latter effects the positivo and certain cutting off of the overflow from the
liftor and after that of the machine in general, concurrent with the opening of the
steam-inlet cock, hence the injector will work as a non-lifter as well as a lifter,
the supply of steam to both sets of tubes being equal.
In order to reduce the capacity, of the machine, the operator grasps the handled
end of rod so as to prevent movement of the overflow-cock and then moves tho
lever inward to close the port of the steam-inlet cock to the desired extent, thus
curtailing the steam-supply. This is very important as it not only results in the
reduction of the steam to the "lifter" and thereby reduces the capacity of the
machine, but acts at the same time as a governor and steam-saver for the "forcer,"
the latter needing less steam commensurate with the decreased supply of water.
In this way we are enabled to adjust the steam-inlet cock independent of the
overflow-cock and thereby regulate the steam-supply and, consequently, the working
of the injector.
In order to heat the water in the suction-pipo or tank, the operator, while the
machine is working, grasps the lever so as to hold it firm, and pushes inward on
rod h, causing the cock to break the column of steam and water, resulting in the
steam passing down into the suction pipe, heating the water therein.
The advantages of our present invention are apparent. It will be observed
that we neo but two cocks, one for controlling the steam-inlet and the other for
the overflow and supply to tho boiler. These cocks are easily operated, having
substantially no resistance to their turning; and are movable in unison and
independently. It is well known with what difficulty injectors are started when
full pressure of steam is against the series of valves. But this we avoid by using
cocks, which can be turned in either direction without difficulty. The lifting of
the water is effected by but a small head of steam supplied through the small port
of the inlet-cock, the steam passing to both the lifter and the forcer, and as water
is lifted the overflows are closed and a full head of steam is supplied through the
main port of the inlet-cock. A steam-injector constructed as herein-doscribed is
simple and inexpensive and not liable to readily get out of order.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the samo is to be performed, we declare that what wo
claim is:-
1. A double tube injector having a steam-chamber common to both the "lifter"
and "forcer" and a steam inlet cock having two steam-ports of different sizes, and
means for turning said cock, substantially as set forth.
2. A double-tube injector having a steam-chamber commom to both the "lifter"

page_text: and "forcer" and a steam-inlet cock having a wide transverse port or opening and
a smaller port arranged diagonally to said former port, or opening, and a lever for
turning said cock, as set forth.
3. A double-tube injector having a steam-chamber common to both the "lifter"
and "forcer," a steam-inlet cock located in the top of said steam-chamber, a second
cock for controlling the overflow and the passage to the boiler, and connections
between said cocks, substantially as set forth.
4. A double-tube injector having a steam-chamber common to both the "lifter"
and "forcer," a steam-inlet cock located in the top of said steam-chamber, a socond
cock for controlling the overflow and the passage to the boiler, an operating lover,
and connections between said lever and said cocks, whereby the latter may be
moved in unison or independently, as set forth.
5. A double-tube injector having a steam-chamber common to both the "lifter"
and "forcer," a steam-inlet cock located in the top of said steam-chamber, a second
cock for controlling the overflow and the passage to the boiler, an operating lever,
a rocking-bar mounted thereon, and connections between the ends of said rocking
bar and said cock, substantially as set forth.
6. A double-tube injector having a steam-chamber common to both the "lifter"
and "forcer," a steam-inlet cock located in the top of said steam-chamber, a second
cock for controlling the overflow and the passage to the boiler, an operating lever,
a rocking bar mounted thereon, arms carried by said cocks, a pitman connecting
the arm of the steam-iulet cock to one end of said rocking bar, and the handled
rod connecting the other end of said rocking bar to the arm of said overflow cock,
substantially as set forth.
7. In a lifting and forcing injector having a single cock for controlling the
overflow and the passage to the boiler, a steam-iulet cock having ports of different
capacities, and means for moving said cocks in unison and independently, as set
forth.
8. In a lifting and forcing injector having a single cock for instantly outting off
the overflow of the "lifter" and gradually that of the "forcer," a steam inlet
cock having ports of different capacities, and a lever connected to both of said
cocks, substantially as set forth.
9. In a lifting and forcing injector having a single cock for instantly cutting off
the overflow of the "lifter" and gradually that of the "forcer," a steam inlet
cock having ports of different capacities, a lever, connections between said lever
and both of said cocks, the connection between said lever and said steam-inlet
cook permitting the latter to be moved indopendently of the other cock, substantially
as set forth.
10. A lifting and forcing injector having a steam-inlet and overflow cooks
extended transversely through the machine, arms carried by said cock having bent
ends, stops designed to be engaged by said ends, and an operating lever connected
to both of said arms, substantially as set forth.
Dated this 17th day of November 1896.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.