Year: 1888

page_text: Date of Application, 4th May, 1888
NG
Complete Specification Left, 4th Feb., 1889
Complete Specification Accepted, 9th Mar., 1889
We FREDERICK CRAVEN, and ARTHUR CRAVEN, of Waterloo Mills, Bradford, in the
County of York, Spinners, WILLIAM PINDER, of the same place Engineer, and PETER
HENRY STANSFIELD, of Leeds Road, Bradford, aforesaid, Plumber, do hereby declare
the nature of this invention to be as follows:-
This invention has for its object, the provision of means whereby water in the form
of spray or in fine jets; or air and water combined, may be injected into and
through a series of pipes for the purpose of heating rooms, machines, water, and for
other purposes for which steam or hot water is used as the heating agent.
We accomplish our object in the following manner: We place a range of pipes in
a highly heated charber, such as a flue of a steam boiler, and connect to one end of
the pipes an injector of novel construction, so arranged that, water spray or fine jets
may be injected into the said pipes; or atmospheric air combined with water spray or
fine jets may be driven into the heating pipes by the force of a jet of steam; and
thereby heated to a high temperature with little liability of damage to the pipes
bursting with pressure.
We construct the injector somewhat in the following manner: by forming a casing
round a portion of the injector and dividing the interior of the injector into com-
partments; through the centre of which is a thoroughfare composed of pipes, partly
parallel, and partly conical; the outlet end communicating with the pipes in a heated
chamber. Steam is admitted into one compartment, and its flow through a pipe
having a conical or bell mouthed opening is adjusted by a coned spindle; the steain
rushing through the said pipe, causes, on the opening of a valve, an inrush of atmo-
spheric air into another division where they are combined.
The steam, or steam and air combined, as the case may be, continuing its course;
passes through a conical pipe forming the last division of the thoroughfare, the same
being surrounded with water; to which communication is made by small holes,
through which the water passes and is combined with the steam, or steam and air;

page_text: and is injected or forced into the pipes for heating, and utilization in the work rooms,
machines, water vats, water heating and other apparatus; the connections between
the pipes in the heated chamber and rooms, or other apparatus being of the ordinary
character.
We, FREDERICK CRAVEN, and ARTHUR CRAVEN, of Waterloo Mills, Bradford, in
the County of York, Spinners, WILLIAM PINDER, of the same place, Engineer, and
PETER HENRY STANSFIELD, of Leeds Road, Bradford aforesaid, Plumber, 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 has for its object, the provision of means whereby water in the form
of spray or fine jets, or air and water combined may be injected into a series of pipes,
for the purpose of heating rooms, machines, water, and for other purposes for which
steam or hot water is used as the heating agent; and consists in placing a range of
pipes in a highly heated chamber such as the flue of a steam boiler as fully described
in specification No. 15821. dated the 18th of November 1887, and connecting to the
said pipes an injector of novel construction so arranged that spray, or fine jets of
water may be injected into, and forced through the said pipes, or air combined with
water spray may be driven in by steam and heated to a high temperature.
We construct the injector by dividing the interior into compartments, through the
centre of which is a thoroughfare composed of pipes partly parallel, and partly conical,
the outlet end communicating with the pipes in the heated chamber; Steam is
admitted into one compartment, air into another, and water into a casing formed
round a conical pipe, to which communication is made with the interior of the injector
by small holes, so that by the rapid course of the steam, or steam and air combined
as the case may be; the water on passing through the small holes is combined
therewith, and injected or forced into the pipes for heating and utilization in the
rooms as required.

page_text: In describing our invention more in detail, reference is made to the accompanying
drawings in which,
Fig. 1. represents a sectional elevation of an injector constructed according to our
invention, and,
Fig. 2. is a modification showing how the water may be introduced into the heating
pipes.
The casing of the injector is divided into compartments, the upper one A. being for
steam which is conveyed thereto by pipe B., the supply through the cones into the
heating pipes being regulated by the coned plug C. which is adjusted in relation to
the coned tube D. by the hand wheel and screw S. Into the compartment E. atmo-
spheric air may be admitted by opening a tap or valve coupled to the pipe F and to
the compartment G. round the conical pipe H. water may be fed by gravity from an
elevated cistern, forced from a water main, or pumped, as found most convenient to
suit the situation and circumstances; the water flowing from the said compartments
in fine jets into the pipes J. through the small holes K. at the base of the coned
pipe H, where it is joined by the steam, or steam and air combined flowing through
the injector, and carried forward through the heating pipes which are placed in the
flue of a boiler, or other suitable heating chamber arranged in the manner as shown
and described in the before-named specification, where it is heated to a high
temperature and conveyed through the distributing pipes for utilization in the rooms,
machines, watervats, or other apparatus requiring heat.
During our experiments we have found that water may also be silently introduced
by a modified arrangement and carried forward through the heating pipes by the
steam, or steam and air passing through an injector.
When introducing water in this modified manner to the heating pipes, as shown by
Fig. 2. we insert a pipe L. of some length within a larger pipe M. connected to or
forming part of the pipes in the heated chamber, the water supply to the pipe L.
being the same as when it is introduced to the compartment G. and is forced into the
larger pipe M. through the perforations N. which we find to act most advantageously
when placed on the upper side as shown in section Fig. 2., the water being distributed
in fine jets or spray is carried forward through the pipes without making any
material or loud cracking noise, and with little liability of damage to the pipes,
as is the case when introduced in a body as through the full bore of a pipe.
Having new particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. An injector consisting of the parts constructed and combined substantially as
described with reference to the accompanying drawing and operating as and for the
purpose specified.
2. An injector consisting of the parts constructed and combined substantially as
described, and used with or without the small holes K. at the base of the coned pipe J.
in combination with a perforated pipe L. within one of larger diameter all arranged
substantially as described with reference to the accompanying drawing and operation
as and for the purpose specified.
Dated this 1st day of February 1889.