IMPROVE- MENTS IN OR CONNECTED WITH THE CUSHIONING OF VALVES APPLICABLE FOR WATER PUMPS AND OTHER LIKE PURPOSES
Year: 1883

page_text: LETTERS PATENT to William Phillips Thompson of the firm of W. P. Thompson
& Boult, Agents for Foreign Patent Solicitors, 6 Lord Street Liverpool in the
County of Lancaster, et cetera, Civil Engineer for an Invention of "IMPROVE-
MENTS IN OR CONNECTED WITH THE CUSHIONING OF VALVES APPLICABLE FOR
WATER PUMPS AND OTHER LIKE PURPOSES." a communication from James
Flower a NATHAN HAsiding in the TTmited Colon
COMPLETE SPECIFICATION filed by the said William Phillips Thompson at
the Office of the Commissioners of Patents on the 13th April 1883.
WILLIAM PHILLIPS THOMPSON of the firm of W. P. Thompson & Boult Agents
for Foreign Patent Solicitors 6 Lord Street Liverpool in the county of Lancaster
et-cetera Civil Engineer "IMPROVEMENTS IN OR CONNECTED WITH THE CUSHIONING
OF VALVES, APPLICABLE FOR WATER PUMPS
AND OTHER LIKE PURPOSES
"
a communication from James Flower a person residing in the United States of
America
The following is a copy of the communication exactly as received by me from
my correspondent.
My invention consists in the combination of devices and appliances hereinafter
specified, and more particularly pointed out in the claims.
In the drawings, Fig. 1, is a vertical section of an apparatus embodying my
invention.
Fig. 2, is a view of the same showing the casing in section, and the valve
mechanism in elevation.
Fig. 3, is a separate view of the valve mechanism in section.
Fig. 4, is a plan view of the cage of the valve seat.
Fig. 5, is a separate view of the cage of the valve seat in elevation.
Fig 6, is a plan view of the valve seat.
Fig. 7, is a separate view of the valve seat in elevation.
Fig. 8, is a separate view showing the check valve.
Fig. 9, is a separate view of the valve.

page_text: The object of my invention is to provide means for cushioning water valves in
pumps and other similar locations, in which the construction of the valve
mechanism is such that the valve in its fall is cushioned upon water below it.
As shown in the drawings, & represents the inlet pipe, L the inlet valve, N
and M the valve cage, I¹ the passage to the pump cylinder, H the piston. D¹ is
the outlet valve; D and D² its cage opening into the air chamber, and A. the exit
pipe. B is the air chamber.
My invention relates more particularly to cushioning the valves. To this end,
the valves L and D¹ are preferably constructed with a suitable head, as shown
at L' in Fig. 9. I represents elongated spiral blades secured thereto. L' is a
suitable base. N is the lower portion of the valve cage for the inlet valve,
constructed with a tubular section, suitably provided with inlet passages F F.
N' is a flange, whereby the valve cage is secured in the casing of the pump, M is
the head of the cage which limits the travel of the valve. It is suitably provided
with discharge orifices. D³ is the lower portion of the valve casing for the outlet
valve, provided with inlet passages k k. X is its flange, and D the cage head,
provided with discharge orifices d and d¹.
Both valves are similar in construction. Each valve seat is provided with a
dash pot at its lower end, as shown at S in Fig. 3, having a contracted outlet W.
T is a screw passing through the casing of the pump, provided with an outer head
and a stopper V, at its inner end, adapted to be adjusted into the outlet W, as may
be desired, to regulate the discharge of water from the dash pot so as to properly
cushion the valve on its fall.
P is an outer casing of this regulating valve.
It is evident that when the suction is applied by the stroke of the piston, the
lower valve is lifted in the valve seat, when the water finds a ready passage
through it into the cylinder I.
The opposite stroke of the piston drives the lower valve down in the valve
cage, and upon the water in the dash pot, whose exit is checked by means of the
stopper V, and the valve is consequently cushioned upon it. Vice versa, the
suction applied by the stroke of the piston forces the upper valve down into the
dash-pot, where it is cushioned in like manner. The construction is such that in
operation it is found also, that when the valves are lifted, the water at the top
prevents their striking heavily on the cage. This valve can be applied to any
pump, or in any other location where similar liquid valves are required.
Fig. 8 shows its adaptation as a check-valve.
What I claim is ;-
1st. The combination with the valve cage, having openings in its side walls and
head, and the dash-pot at its lower end, having an escape orifice, of the valve
having a head arranged to play in the cage next the head thereof, and the base
arranged to play in the dash pot, said head and base being connected, substantially
as described.
2nd. The combination with the valve cage, having the dash-pot at its lower end
provided with a liquid escape orifice, of the screw valve I, arranged to regulate
the extent of opening of said orifice, substantially as described.
In witness whereof I the said William Phillips Thompson have hereunto set my
hand and seal this tenth day of April in the year of our Lord one thousand
eight hundred and eighty three.
9 MTTANAN