Two-Stage Pump Page: 2 of 4
[1], 3 p. : ill. ; 23 cm.View a full description of this patent.
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UNITED STATES PATENT OFFICE.
WILLIAM T. GRAY, OF EL CAMPO, TEXAS, ASSIGNOR TO EL CAMPO MACHINE COMPANY,
A CORPORATION OF TEXAS.
TWO-STAGE PUMP.Specification of Letters Patent. Patented July 12, 1910.
Application filed November 22, 1909. Serial No. 529,337.To all whom it may concern:
Be it known that I, WILLIAM T. GRAY, a
citizen of the United States, residing at El
Campo, in the county of Wharton and State
5 of Texas, have invented certain new and
useful Improvements in Two-Stage Pumps;
and I do hereby.declare the following to be
a full, clear, and exact description of the
invention, such as will enable others skilled
10 in the art to which-'it appertains to make
and use the same.
This invention relates to rotary pumps
of the double-runner or two story type. Its
chief object is to provide for the separate
15 discharge of the water from each runner
into a common channel, in order that the
flow may be unimpeded, it coming first in a
single volume, then being divided into the
two independent parts above indicated and
20 again uniting in a single volume without
eddies or returning currents or any obstruc-
tion of the pump. I also ain to make the
several elements of the pump conveniently
separable, without lessening its strength and
25 to increase its simplicity and durability.
To these ends my invention consists in the
construction and combination of parts here-
inafter particularly set forth and claimed.
In the accompanying drawings Figure 1
30 represents a vertical central section of a
pump and attachments embodying my in-
vention; Fig. 2 represents a detail plan
view of the upper runner; Fig. 3 represents
a similar view of the lower runner ; Fig. 4
35 represents a similar view of the annular sau-
cer shaped partition or deflector.
A designates the lowest section of the
pump-shaft, screw-threaded at its upper
end for engagement with the next section
40 above it and provided with a reduced screw-
threaded lower end a'for engagement with
the rotary double runner or pump.
B designates the pedestal or lowest section
of a tubular pump casing, inclosing said
45 shaft and having a Babbitt metal bushing
C between them. Said pedestal serves as
a bearing box for said shaft and is fastened
detachably, through its spread annular foot
d, by bolts D to the upper section E of a.
50 two-part pump casing. This section E is
provided with a trumpet form expansion
chamber F, communicating with an up-wardly flaring vertical discharge pipe ped-
estal G and is fastened in any convenient
way upon the lower section H of said casing. 55
This casing and the parts F G above men-
tioned, also the pump-shaft tubular pedestal,
bushing and a rotating pump used in com-
bination with such casing are claimed in my
application No. 529,336, hence I do not 60
claim them in this application; and no fur-
ther description seems necessary. The chief
difference in construction of these parts in
the present case is in the greater depth of
the lower section of the casing to accommo- 65
date the two separate runners. These run-
ners are designated respectively I and J,
and screwed together in the center by means
of screw-threaded parts i and j. Each of
these runners has a series of discharge pas- 70
sages K or L between vanes M or N, said
vanes and passages being either strictly ra-
dial or preferably of scroll form and spread-
ing laterally toward the discharge end,
though growing shallower as shown in Fig. 75
1. The upper part of lower runner J is re-
cessed on top and near its- periphery to form
with the proximate face of the upper runner
I a pocket 0, for the reception of the in-
clined inner part of an annular approxi- 80
mately bowl-form deflector or partition, the
nearly vertical peripheral part of which sepa-
rates from each other the two independent
annular passages P and Q, respectively ad- .
mitting the water from runners I and J to 85
the curved outlet opening R, through which
in a single current or volume it flows to the
said expansion chamber and discharge pipe.
This deflector is held in place by screwing
together the two runners I and J, as stated, 90
to form the double runner or complete ro-
tary pump. Space blocks S are attached
to its exterior at intervals and by contact
with the inner face of the lower section H
of the pump casing keep said deflector 95
braced and in proper form and position, but
are not large enough to seriously impede the
upward flow from the lower runner J. An
annular space T, between the said rotary
pump and deflector on one side and said 100
casing section H on the other, receives the
discharge from runner J and guides it up
to the outer passage Q.
The pump is provided with a downwardly963,756.
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Reference the current page of this Patent.
Gray, William T. Two-Stage Pump, patent, July 12, 1910; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth508836/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.