Improvements in Steam Pumps of the type known as "The Pulsometer."
Year: 1891

page_text: COMPLETE SPECIFICATION.
Improvements in Steam Pumps of the type known as
"The Pulsometer."
I, EDWARD LUND, Junior, of Edge Lane, Stretford, in the County of
Lancaster, Engineer, do hereby declare the nature of my said invention and in
what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:-
These improvements have reference to the steam valves of that class of pumping
apparatus known as the "Pulsometer" and have for their object to render such
valves more durable and reliable in action also more accessible for repair or
replacement than heretofore and which improvements consist in employing a pair
of conical poppet or mushroom valves operating under a system of levers and links
which are so mounted and adjusted that as one valve is caused to close upon its
seating by the action of the steam its fellow valve is simultaneously caused to open
or leave its seating and so on continuously in the manner well known in the
pulsometer pump. These improvements also include a special form of hinged
spherical valve operating in a similar manner to the before mentioned valves.
On the accompanying drawings Figs. 1 to 6 are sectional views respectively of
so much of a "Pulsometer" as is necessary to make my improvements clear.
In all the views A. A. are my improved valves, B. B. the brass seatings fixed in
the respective mouths or openings leading to the two water chambers.
Referring now to Fig. 1 of the drawing C. C. are a pair of levers loosely linked
together at D and pivoted at E. E. between forks or ears F. F. rising from the
bottom of the valve chamber, the free ends of which levers are rounded off and
enter slots in the stems G. G. of the valves A. A. one of which valves is inverted
as illustrated, whilst if it is desired to allow the valves to work on one level an
additional or intermediate lever H is used as illustrated in Fig. 2 pivoted at I.
In Fig. 3 the valves are formed all in one piece working in the same vertical
line with a weighted lever J pivoted at K serving to control and counterbalance
the weight of the valves and keep them in equilibrium.
A modification of this last mentioned arrangement is shewn in Fig. 4 where two
levers L. L. and a link M are employed the weight of the link M being equivalent
to the weighted lever J in Fig. 3.
Instead of the loose connection between the inner ends of the levers as illustrated
in Figs. 1 and 2 the same may be formed with a series of teeth and caused to gear
into each other as illustrated in Fig. 5.
A bell-crank lever may be employed as illustrated in Fig. 6 fulcrumed at M¹
with a counterbalancing weight N. the valves in this case working at right angles
to each other instead of parallel as heretofore,-a hole being made in the wall of
the steam chest, opposite the horizontal valve A, to facilitate the fixing of the
seating of the said valve as shewn closed by the plug O.
Figs. 7 and 8 illustrate other ways I have of applying these forms of valves, the
valves in Fig. 8 being provided with tilting lever P which serves to assist the
steam and give positive action to the valves whilst the valve in Fig. 7 operates of
itself in the ordinary manner. The valve chamber covers in these last mentioned
arrangements are formed in halves with a "he" and "she" joint Q, to facilitate
the fixing or examination of the valves.
The improved form of hinged spherical valve hereinbefore mentioned is illustrated
in Figs. 9, 10, and 11, two of which valves are connected together by rods or
links R. R. the plugs S. S. which are capable of being screwed into the bosses T. T.
serving to adjust the amount of opening of the valves.
In constructing this form of valve I first form the valve and valve seating and

page_text: afterwards drill the centre U rimering it out and fitting it with a taper pin V and
in this manner I get a reliable valve of very accurate fit.
In most of the views it will be observed that a plate X is inserted between the
valve chamber and the top of the water chambers and the passages for the steam
are provided with a series of holes to form a grid to prevent any extraneous matter
carried along by the steam or water getting into the steam valve chamber.
Instead of forks or ears for supporting the several levers herein before mentioned
the pins or axes of such levers may pass through the sides of the steam chest and be
supported thereby.
It will now be seen that by employing and so mounting these forms of valves the
same are at all times accessible and may be repaired or replaced from time to time
and moreover by the use of such valves a much more effective valve action is
obtained than heretofore.
my
Having thus particularly described and ascertained the nature of this said
invention and in what manner the same is to be performed I wish it to be under-
stood that I make no claim to the special form of valves herein before mentioned but
what I do claim and desire to secure by Letters Patent is :-
1st. The employment of conical poppet or mushroom valves mounted and
operating under one or more links or levers and counterbalancing weights sub-
stantially as and for the purposes herein before described and illustrated in Figs. 1
to 6,on the accompanying drawings.
2nd. The employment of conical poppet or mushroom valves with or without a
tilting lever enclosed within a divided cover mounted and operating substantially
as and for the purpose hereinbefore described and illustrated in Figs. 7 and 8 on
the accompanying drawing.
3rd. The employment of the hinged spherical valves connected together by links
or otherwise and mounted and operating substantially as and for the purpose
hereinbefore described and illustrated in Figs. 9, 10, and 11 on the accompanying
drawings.
Dated this 12th das of October 1891
JOHN G. WILSON,
Agent for the Applicant.