Improvements in Apparatus for Lifting, Forcing, Circulating, or Heating Liquids, or for Propelling Air or other Gases.
Year: 1895

page_text: Date of Application, 15th May, 1895
Complete Specification Left, 8th Feb., 1896-Accepted, 4th Apr.,
1896
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Lifting, Forcing, Circulating, or
Heating Liquids, or for Propelling Air or other Gases.
WILLIAM ALLMAN 45 Villa Road Handsworth in the County of Staffordshire
Manufacturer and JOHN MILLWARD 36 Temple Street Birmingham in the County
of Warwick Engineer do hereby declare the nature of this invention to be as
follows:-
:-
This invention relates to that class of appliances known as jet pumps, ejectors,
blowers, and the like, operated by jets of steam or compressed air, and is mainly
applicable to jet pumps, or similar instruments for moving water or other liquids.
The invention consists of a method of construction by which a more easy flow of
liquid through such instruments is obtained, and by which also they are rendered
more rigid in form, and consequently less liable to damage from straining in fixing
or in working than hitherto, and further are more readily taken apart for repairs
or for clearing out in case of obstruction.
In a jet pump or ejector constructed in accordance with this invention the pipe
or casing in which is mounted the steam jet and delivery nozzle, is formed at an
angle with the inlet pipe for liquid of about 120°, the point of intersection being
at the globular or other shaped chamber forming the body of the pump.
From the end of the delivery nozzel, the continuation of the delivery pipe is
made with an easy bend outwards at an angle of about 150° terminating with a
short straight outlet on which is the usual socket or flange to connect with the
main delivery pipes.
The inlet pipe is shaped in the same way, the result being that the straight
portions of the ends of the inlet and outlet pipes (facing opposite ways) come into
a line with each other. In the triangular space between the inlet and outlet
pipes is a stiffening bracket, plate, or rib, which renders the pump much more
rigid.
If preferred an opening is left centrally in this bracket by which with suitable
shackles, the pump may be slung in a well or other place when working at various
depths. Flanges may be provided as a part of the said bracket or separately for
attaching the pump to a beam or other support, when it is required to be fixed.
Upon the shoulder of the bend of the delivery pipe branch it is preferred to
provide a short neck pipe in a line with the steam jet pipe and delivery nozzle and
facing the outlet of the latter. This is closed with a screw or other plug cap of
about the same size as the delivery pipe, and its inner end is shaped so as to form
when screwed down a true portion of the bore of the said bend pipe.
The steam jet pipe and nozzel, at the other end of the body of the pump, may be
of any usual construction or material either loose, or cast in one piece with a
As
hollow plug flanged or screwed for the usual steam fittings and valve or cock.
will be seen when the plug cap on the delivery pipe bend is removed, and the
steam jet nozzle disconnected, there is a clear way right through the operative
parts of the jet pump or similar instrument, for examining cleaning & repairing-
without removing the pump or disconnecting the main pipes. If preferred the
bends at the inlet and outlet ends of the pump, may be made separately from the
body part and attached by flanges or sockets.
In accordance with this invention further instead of the delivery nozzle of the
jet pump being made a part of the body or casing of the instrument, it may be
together with the jet nozzle made or cast in one and a separate piece, the nozzle

page_text: being connected in the space in which the jet operates, by two or more thin ribs
of suitable shape or section to allow ample area or openings for the passage of the
liquid to be raised.
The outside of the delivery nozzle is fitted so as to be steam or air tight within
the casing, and the wearing parts of the instrument, are thus made easily removable
as a whole when required, and may be of metal or other material distinct from that
of the body or casing of the pump.
In accordance with this invention also two or more pumps of the above
construction may be arranged opposite each other or radially in connection with
the same suction or inlet or delivery pipes which may be provided with valves for
working the pumps alternately if so required.
Dated the 14th day of May 1895.
WILLIAM ALLMAN.
JOHN MILLWARD.
Improvements in Apparatus for Lifting, Forcing, Circulating, or
Heating Liquids, or for Propelling Air or other Gases.
We, WILLIAM ALLMAN, of 45, Villa Road, Handsworth, in the County of
Stafford, Manufacturer, and JOHN MILLWARD, of 36, Temple Street, Birmingham,
in the County of Warwick, Engineer, 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 appliances such as jet pumps, ejectors,
or blowers, operated by jets of steam or compressed air, and especially to such
appliances as adapted for the purpose of moving water or other liquid.
The object of our invention is to construct such appliances of few and simple
parts, and in such a manner that shall be readily accessible for cleaning and
repairs, and of such form that they shall be more rigid and durable, and present a
more easy course for the liquid passing through them, than the appliances of
ordinary construction.
In the accompanying sheet of explanatory drawings to be hereinafter referred
to -
Figure 1 is an elevation partly in section representing a jet pump or like
appliance constructed in accordance with our invention.
Figure 2 is a sectional elevation, and Figure 3 a sectional plan illustrating a
similar appliance with a modified arrangement of the internal parts and with the
water inlet and outlet at right angles.
Referring to Figure 1, the portion A of the pump casing has its interior cored
or shaped to form the delivery passage A2 and is made at an angle with the inlet
portion A preferably of about 120°, the point of intersection being at the globular
or other shaped chamber A. The nozzle B is mounted within the chamber A, as
illustrated, the steam or compressed air for working the appliance being conveyed
through the pipe B. From the end of the delivery passage A2 the portion A* of
the pump casing is carried forward at an angle preferably of about 150° terminating
at the outlet end, to which the ordinary delivery pipe is attached in any usual
manner. The inlet end C and the outlet end D of the jet pump are thus arranged
in the one line with each other as illustrated.
A strengthening and stiffening rib or bracket E is carried across the triangular
space between the portions A' and A³ of the pump casing, thus greatly increasing
the rigidity of the pump with but a small addition to its weight. We sometimes
provide a slot or opening in the bracket for the attachment of suitable shackles
for slinging or suspending the pump in a well or other positions. We also
provide flanges or other connections either as a part of the rib or bracket E, or

page_text: detachable from the same for the purpose of securing the pump to a beam or
other support.
In line with the portion A¹ of the pump casing we form a branch or neck A'
having an aperture through it which is closed by a plug or cap such as F, having a
stem F which is so shaped at its inner end as to correspond with the internal
Eurface of the pump casing, and thus to offer no obstruction to the flow of the
water. On removal of the cap F, and on disconnection of the nozzle B there is a
clear way right through the operative portion of the jet pump or like appliance,
thus enabling any examination, cleaning, or repairs to be effected without
removal of the pump or disconnection of the pipes at either the inlet end C or
outlet D.
Instead of forming the parts A, A', A³, and A', in the one piece or casting we
sometimes make them in two or more pieces, and connect them together by flange
or by screwed joints, or in any other convenient manner.
Referring to Figures 2 and 3 in which the water or other liquid inlet C is at
right angles to the outlet D, the delivery passage or nozzle A² is made in the form
of a bush or liner and is connected with the jet nozzle B by thin ribs such as a so
arranged and of such section as to allow an ample area for the passage of the
liquid to be raised. The outside of the delivery nozzle A' is made to fit steam or
air tight within the pump casing. On disconnecting the flange or joint G, the
combined jet nozzle and delivery nozzle can be at once withdrawn, thus leaving
a clear way right through the pump. The combined jet and delivery nozzle is
made of the same or of a different metal to the body or casing of the pump as may
be required.
We sometimes employ a combined jet and delivery nozzle in conjunction with a
pump of the form shown at Figure 1 and to other modified forms of pump bodies
or casings arranged to suit varying requirements.
We sometimes employ two or more of our improved pumps radially opposite to
each other, or in connection with the same suction or inlet and delivery pipes,
arranging them to work alternately if so required, and providing the ordinary
valves, cocks, and the like.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The improved construction of jet pumps and like appliances enabling the
working parts to be removed, and the interior of the casings exposed, without
disturbance of the main inlet and outlet connections substantially as described.
2. The improved jet pump or like appliance having its inlet and outlet
apertures C and D arranged in one straight line, and the nozzle such as B and the
delivery passage A' mounted and arranged at an angle with C and D, and in line
with the plug or cap F substantially as and for the purposes hereinbefore described
and as illustrated in Figure 1 of the accompanying drawings.
3. The improved jet pump or like appliance having the jet nozzle such as B
and delivery nozzle A formed in one piece or rigidly connected together and
arranged in line with the outlet D substantially as and for the purposes herein-
before described, and as illustrated in Figures 2 and 3 of the accompanying
drawings.
4. The improved general construction and arrangement of a jet pump or like
appliance substantially as and for the purposes described.
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicants.