Pump-Plunger Page: 3 of 4
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UNITED
STATES
PATENT OFFICE.
EUGENE SCOTT, OF TOYAH, TEXAS.
PUM P-PLUNGER.
SPECIFICATION forming part of Letters Patent No. 724,512, dated April 7, 1903.
Application filed November 2, 1901, Serial No, 80,960. (NTo model.)To all whom it may concern:
Be it known that I, EUGENE SCOTT, a.citizen
of the United States, residing at Toyah, in the
county of Reeves and State of Texas, have in-
5 vented. a new and useful Pump-Plunger, of
which the following is a specification.
This invention relates to pumps, and more
particularly to the plunger-valve mechanism
and also to the foot-valve mechanism; and the
ro object of the invention is to provide an im-
proved construction of both plunger and foot-
valve mechanisms and also an attachment-
to the plunger mechanism whereby the foot-
valve mechanism can be removed when de.-
15 sired.
With these objects in view the invention
consists in the peculiar construction of the
various parts and in their novel combination
or arrangement, all of which will be fully de-
20 scribed hereinafter and pointed out in the
claims.
In the drawings forming part of this speci-
fication, Figure 1 is a view illustrating the
plunger - valve mechanism and lower-valve
25 mechanism coupled together and being ex-
tracted from the tube of the well. Fig. 2 is a
vertical sectional view of the plunger-valve
mechanism,the foot-valve mechanism,and the
connections between the two. Fig. 3 is a sec-
30 tion on the line 3 3 of Fig. 2. Fig. 4 is a section
on the line 4 4 of Fig. 2. Fig. 5 is a section on
the line 5 5 of Fig. 2. Fig. 6 is a view illus-
trating in perspective the several parts of the
plunger-valve mechanism, foot-valve mech-
35 anism, connections, packing-rings, &c.
In carrying out my invention I employ a
plunger-rod A, the lower end of which has a
threaded socket A', which screws upon the
threaded projection B of the upper cage C,
40 said cage carrying the upper check-valve D,
which rests upon the upper-valve seat E, said
valve-seat E being screwed into the lower -
end of the cage C, as most clearly shown in
Fig. 2.
45 F indicates the lower check-valve, which is
arranged in the lower cage G, said lower cage
being connected to the upper cage by means
of a cylindrical coupling H. The lower check-
valve F has the stem D' connected thereto,
50 the tipper check-valve sliding upon the up-
per-end of said stem D'. The lower face of
the valve F is provided with guide-wings F'.The exterior of the upper case C is provided
with a ring C', and the lower cage G is formed
with a ring G', and between the cylindrical 55
.coupling H and the said upper and lower
rings C' and G' are arranged the packing-
rings I, said packing-rings being preferably
made of composite fabric, the ends being
united by means of soft rubber I', secured in 6o
the notched ends of the packing-rings ar-
ranged in pairs.. Each pair surrounds a thin
band of copper K, the ends of which overlap,
as shown in Figs. 3 and 4, which is interposed
between the cage and the said packing-rings. 65
By-this construction.the thin copper band or
diaphragm K is spread by the pressure of the
water above the plunger, thereby expanding
the packing-rings I and insuring a close fit.
The coupled valve construction shown is pre- 70
ferred, because'each cooperates to guide the
other and in addition each serves to retain the
water in the respective chambers above them,
and thereby keep the packing-rings dilated,-
though this is not essential. The foot-valve L 75
rests upon the seat M, which seat has a cage N
connected thereto, the upper portion of the
cage having an elongated opening 0, the
center of which is slightly enlarged, as most
clearly shown in Fig. 6. The lower cage G So
has a depending yoke P, from which extends a
shank Q, terminating in a head R, which head
is adapted to be passed through the opening 0
and when turned at a right angle to the major
diameter of the said opening a coupling will 85
be effected between the said depending yoke
and the foot-valve cage, thereby establishing
a connection between the plunger-valve mech-
anism and the foot-valve mechanism. A sec-
tional washer-ring S surrounds the shank Q 90
and serves to take up any lost motion be-
tween the depending yoke and foot-valve
cage.
It will of course be understood that the foot-
valve mechanism is located in the well-tube 95
and the plunger-valve mechanism operates
entirely independent of the same. At each
operation of the plunger-rod A the upper and
lower check-valve will become seated and un-
seated, thereby pumping the water up the roo
well-tube. Whenever it is desired to remove
the foot-valve, plunger-rod A is forced a
slight-distance downward, the head R pass-
ing through the opening 0, and by giving
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Scott, Eugene. Pump-Plunger, patent, April 7, 1903; Washington D.C.. (https://texashistory.unt.edu/ark:/67531/metapth514218/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.