Year: 1888

page_text: I EDWARD LUND Jnr. of 2 Ellesmere Terrace Edge Lane, Stretford, in the County of
Lancaster Engineer, do hereby declare the nature of my invention and in what
manner the same is to bo performed to be particularly described and ascertained in
and by the following statement :—
"
This invention relates to improvements in that class of double chambered apparatus
employed for pumping liquids now well known in the market as "Pulsometers and
relates to improvements in the general arrangement and construction of such
apparatus but more particularly to that of the steam inlet chamber and of the valve
employed therein.
On the accompanying drawing Fig. 1 is a front view Fig. 2 a side view and Fig. 3
a plan view of a Pulsometer constructed in accordance with my invention. Fig. 4 is
a front sectional view Fig. 5 a side sectional view and Fig. 6 a plan view (all upon an
enlarged scale) of the upper part of the same Pulsometer and constituting my improved
steam inlet chamber.
a. a. are the main chambers which are cast in one piece with the hollow base 6 com-
municating at the back with an air vessel c and at the bottom with a branch pipo d
forming the inlet passage for the liquid.
In front of this same casting are the inlet and outlet valve chambers marked e and f
respectively the latter communicating with the outlet branch g. These chambers are
conveniently disposed for obtaining access to the valves and are provided in front with
bonnets or covers as illustrated. The valves employed may be of any of the usual
descriptions and form no part of my invention.
The top of the main chambers both terminato and open into my improved steam
valve chamber h-which is also constructed by preference in one casting with the

page_text: main chambers. This valve chamber is as illustrated of cylindrical form open at the ends
and is so constructed to receive a correspondingly shaped bush or lining i hereinafter
called the improved valve casing. In the recess of this casing I form the steam valvo
faces or seatings kk and which are arranged at such an angle to each other that the
steam valve which is of rectangular or cubical form is capable of resting in the angle
as illustrated more clearly in Fig. 4, and thus of tilting over to one valve facing or the
other as the vacuum is formed in its corresponding main chamber. I enclose my
improved valve casing by a removable cover at each end of the cylinder with sloping
projections m on the opposite inner sides of the covers to guide and keep the valve
in a central position between the two valve faces.
This improved construction of valve chamber not only permits ready access to be
obtained to the steam valve say for cleaning examination or other purposes but
is convenient as permitting the filing up or facing of the valve surfaces from time to
time without removing the casing. It will be further apparent that the cubical form
of the valve presents three distinct pairs of valve surfaces either of which may be
brought into play as required by simply turning the valve over in its chamber and by
permitting it to rest and oscillate upon another of its angles.
In Figs. 7 and 8 I illustrato a front and side sectional view of a valve casing and
valve which only differs from that illustrated in Figs. 4 to 6 in the valve n being of the
same cross-section but of elongated form in the direction of its length.
Figs. 9 and 10 represent similar viows of my improved valve casing but with tho
valve o of an equilateral triangular form in cross section whilst in Figs. 11 and 12
(which represent similar views of another modification) the valve p is shown of a
rhomboid or double triangular shape in cross section-It will be sufficiently apparent
that either of these valves is capable of being turned on to another angle to present
another and different set of faces as aforesaid.
In Fig. 14 I represent a side sectional view of a modification of my improved valvo
chamber and in Fig. 13 a front sectional view of the valve casing and alone in which
the valve faces are formed in or upon a triangular projection r and the valve S itself
correspondingly shaped to rock to and fro upon the apex.
In all the foregoing the valve rests upon an angle but my improved valve casing
can also be formed with a cylindrical recess t as illustrated by front sectional view in
Fig. 15 and in side soctional view in Fig. 16-the valvo u in this case being cylindrical
and of a corresponding curve and capable of rolling from one valve facing to the
other under the alternate or pulsating action of the two chambers-the two cylindrical
valve faces in this case being of the same curve as the valve but struck from two
separated centres to allow for the moveing or rolling of tho valve.
It will be readily understood that the set or inclination of the surfaces around tho
orifices or ports leading to the main chambers must be so formed or set at such an
angle to each other that the valve being placed between such surfaces is there
allowed to rock or oscillate from one surface to the other leaving the opposite face of
the valve free of and away from the other steam port or orifice according to the
direction of the current of the steam and to fall over to one or the other side under
the alternate pulsating action of the chambers.
In some cases I dispense with the cylindrical valve casing or bush and form the
valve recess and steam ports as aforesaid in the valve chamber direct.
Having thus particularly described and ascertained the nature of this my said
invention and in what manner the same is to be carried into practical effect I wish
it to be understood that I make no claim to the employment of a double chamber
communicating with a steam chamber in which a ball, disc or wedge shaped valve
oscillates alternately between a pair of ports or orifices leading to such chambers as I
well aware that the same have been hitherto employed but what I do
claim is :-
am
1st. The general arrangement and construction of improved Pulsometers herein-
before described and illustrated on the accompanying drawing.

page_text: 2nd. In a Pulsometer the employment of a steam valve chamber containing a bush
or valvo casing fitted with valve surfaces and a correspondingly formed valve in the
manner and for the purpose substantially as hereinafter described and illustrated on the
accompanying drawing.
3rd. The various combinations and arrangements of valve casings and valves sub-
stantially as and for the purposes hereinbefore described and illustrated on the
accompanying drawing.
JOHN G. WILSON,
Patent Office,
55, Market Street, Manchester,
Agent for the Applicant.