Improvements in Injectors and Water or Liquid Elevators.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Injectors and Water or Liquid Elevators.
ALFRED HODGSON SMITH, Gamston House, Radcliffe Road, West Bridgford,
Nottingham, Brass Founder, do hereby declare the nature of this invention to be
as follows:-
-
Each injector I construct is of a circular form, having four orifices which may
be screw threaded or flanged as desired. In the centre of the circular body is a
square chamber surrounded by two semi-circular chambers, the one to admit
water to supply the injector, the opposite one to act as an overflow and to hold the
retaining valve to the overflow and vacuum chamber. This retaining valve is so
constructed that it will close the vacuum chamber but at the same time will
always allow a free passage from the overflow chamber. The steam orifice and
the delivery orifice, are each screw threaded to receive the cones, the delivery
cone passes entirely through the walls of the inner square casing and the cone
is telescoped or tightly fitted that it may be regulated by the screw threaded
portion of the delivery orifice, it has also two breaks or outlets, one in the vacuum
chamber and one in the overflow chamber, the steam cone is also screw threaded
to regulate through the steam outlet orifice. This injector being perforated in
the top outer casing would be a powerful water raiser, as an injector will work
under, in, or out of water and will draw its own water or receive it from above
and will restart automatically.
11 Jon of Dacomber 1898.
Improvements in Injectors and Water or Liquid Elevators.
ALFRED HODGSON SMITH, of Gamston House, Radcliffe Road, West Bridgford,
Nottingham, Brass Founder, 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 relates to improvements in injectors or líquid elevators of the

page_text: type known as automatic, and has for its object the construction of an injector
or liquid elevator in which the suction, forcing, and delivery cones are formed
in the same casting, also the provision of a valve for automatically closing the
vacuum chamber without interterring with the overflow passage, and the combi-
nation and arrangement of these parts and the steam cone with the outer casing
whereby all the working parts can be removed and replaced in a simpler and
more expeditious manner than heretofore.
According to this invention the outer casting of the injector or liquid raiser
is divided into an inlet chamber, a vacuum chamber, and an overflow chamber,
and there are four orifices provided with flanges or screw threaded. The steam
cone is fixed in one of the orifices and the combined cones in an orifice opposite
the steam cones. A third orifice carries a guide for the vacuum chamber valve
which has a seat in the side of such chamber, while the guide is formed to permit
of overflowing liquid passing by it. The fourth orifice is connected to the liquid
supply and opens into the inlet chamber. The combined cone piece passes into
the vacuum chamber and has openings into that chamber and into the overflow
chamber.
In the accompanying drawings Fig. 1 is a section of one form of the approved
appliance.
Fig. 2 is a section of the cone piece at the bottom of the suction cone, and
Fig. 3 is a section of the cone piece at the bottom of the forcing cone.
In the appliance herein shown the casing a is cylindrical in horizontal section
and is provided with four orifices b, c, d, and e which are fitted with union connec-
tions. Inside the casings there are three chambers f, g and h, the chamber f being
in communication with the inlet orifice b and the chamber g with the overflow
orifice. This orifice is fitted with a grid k which forms a bearing for a valve
which has its seat formed in the side of the vacuum chamber and may be of
the kind shown or be fitted with renewable faces. The steam inlet c is fitted with
the steam cone m which is made with a square recess by which it can be screwed
into the nozzle of the steam orifice. If desired the steam cone can be made adjust-
able from the outside of the casing, or its size may be increased so that the
injector can be worked by exhaust steam.
At the delivery orifice there is fitted the combined cone piece which passes
through the bottom and top of the vacuum chamber and is tightly fitted therein.
The piece at its upper end forms the suction cone and between this and the
forcing coner there are openings s as shown in Fig. 2 which allow of the air and
steam, when the injector is started, passing into the chamber h and escaping by
the overflow pipe through the valve 7. Between the forcing cone and delivery
cone t there is a chamber with passages Fig. 3 which communicate with the
overflow chamber and permit the overflow of liquid to escape by way of this
chamber through the grid and overflow pipe.
9
The cones in the piece o are of the same shape and proportions as the corre-
sponding separate cones in an ordinary injector, and the position of all the cones
are fixed relatively to each other according to the usual practice.
The casing a may be cylindrical, spherical or other convenient shape, and the
orifices may have flanges screwed ends, or other ordinary terminations.
The injector herein described is automatic in its action, and the three cones
being formed in the same piece can be easily removed for cleaning and inspection,
and by the arrangement of the valve 7 the vacuum chamber is closed automatically
when the injector starts to force the liquid without interferring with the overflow
passage. The injector may be used to draw its own liquid or to work with a supply
under pressure and it may also be used as a liquid raiser.
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:-
1. In an injector or liquid raiser the combination of the suction, forcing, and

page_text: delivery cones in one rigid piece of metal substantially as herein described with
reference to the accompanying drawings.
2. An injector or liquid raiser constructed, arranged and operating substantially
as herein described with reference to the accompanying drawings.
1 1000
W. H. POTTER,
Patent Agent, Brougham Chambers, Nottingham.