Means for Preventing Clogging of the Working Barrels of Pumps. Page: 2 of 5
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UNITED STATESPATENT OFFICE.
ROBERT E. CARMICHAEL, OF DAMON, TEXAS.
MEANS FOR PREVENTING CLOGGING OF THE WORKING BARRELS OF PUMPS.1,246,543.
Specification of Letters Patent.
Patented Nov. 13, 191 .
Application filed January 29, 1917. Serial No. 145,167.
To all whom it may concern:
Be it known that I, ROBERT E. CARMICHAEL,
a -citizen of the United States, residing at
Damon, Brazoria county, Texas, have in-
5 vented a certain new and useful Means for
Preventing Clogging of the Working Bar-
rels of Pumps, of which the following is a
full, clear, and exact description, such as will
enable others skilled in the art to which it
10 appertains to make and use the same.
My invention relates to pumping appa-
ratus for wells and the object of the inven-
tion is to provide a method of preventing
clogging of the working barrel of the pump
15 with sand or other sedimentary matter so
that- continuously satisfactory operation of
the pump is insured, and means whereby this
method is carried into effect.
It frequently happens in using deep well
20 pumps that the water-bearing strata from
which water is being drawn contain consid-
erable quantities of quick-sand or other
loose particles or sediment. In such cases
the sand or sediment passes into the work-
25 ing barrel during operation of the pump and
tends to accumulate, particularly in the
neighborhood of the valves, and thus clog
the working barrel so as to prevent effective
use of the pump and even to completely shut
80 off the flow of water. Upon such clogging
of the working barrel it has heretofore been
necessary to remove the pump rod and plun-
ger in order to break up these sand accumu-
lations and permit of renewed operation of
85 the pump, or even, in those cases in which
the pump rod and plunger could not be re-
moved, to withdraw the entire pump casing
in order to dislodge the obstruction.
It was to remedy these defects in existing
40 pump structures that I devised the method
and mechanism forming the subject matter
of this invention.
In carrying out my invention I provide
mechanism in connection with the pump for
45 so introducing fluid under pressure into the
working barrel during working strokes of
the pump, that the accumulation of sand or
other sedimentary deposits obstructing the
working barrel and valves therein is entirely
50 prevented and so that clogging of these parts
cannot take place. And this mechanism is
so arranged that back-flow of fluid from the
working barrel is entirely prevented. Thus
effective operation of the pump. is at all
55 times insured.
Further objects and the novel features ofmy invention will be apparent from the fol-
lowing description taken in connection with
the drawings in which:
Figure 1 is a side elevation of sufficient of 60
my pump apparatus to illustrate its prin-
ciple of operation, certain parts being in sec-
tion and certain other parts being broken
away in order to more clearly disclose its
mechanical structure. 65
Fig. 2 is a cross-sectional view on the line
2-2 of Fig. 1.
Referring to the drawings 1 designates a
well casing which extends to any suitable
depth into the earth and receives a pump 70
casing 2 of any well known or usual con-
struction. Attached to the lower end of the
pump casing is a. working barrel 3, at the
lower end of which is a standard foot valve
4 of the ball type, the pump casing and 7
working barrel being held in properly con-
nected relation by means of an internally
threaded collar 5. Inclosed within the pump
casing 2 is a hollow pump rod 6, having at
its lower end a conventional plunger or suc- 8o
tion valve 7. Arranged upon the outside of
this plunger and near the lower end thereof
are washers 8. adapted to make a tight fit
between the plunger and the inside of the
r working barrel. The diameter of the pump s5
rod 6 is such that a substantial space exists
between that part of the pump rod above the
washers 8 and the inner wall of the working
barrel, as shown at. 9.
In some localities those strata from which 90
water is being pumped contain a consider-
able quantity of quick-sand which finds its
way along with the water into the working
barrel and tends to clog the working barrel
and valves therein so as to prevent effective 95
operation of the pump. When such an accu-
mulation occurs it is necessary that the
pump rod and plunger be removed in order
to break up the deposits and thus permit of
further effective use of the pump. And in 100
those pumps in which the structure is such
that' the pump rod cannot be removed the
entire casing along with the pump rod must
be withdrawn in order to eliminate these
troublesome deposits. This entails consid- ioo
erable expense along with loss of time and
trouble, and it was to prevent the occurrence
of these troublesome accumulations or de-
posits that I devised my present invention.
In order to prevent these deposits I intro- 110
duce some fluid under pressure into the
working barrel in the immediate neighbor-
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Carmichael, Robert E. Means for Preventing Clogging of the Working Barrels of Pumps., patent, November 13, 1917; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth853694/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.