Casing Point or Strainer. Page: 2 of 5
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UNITED
STATES
PATENT OFFICE.
ANDREW EDWARD CARLSON, OF ELCAMPO, TEXAS.
CASING POINT OR STRAINER.
SPECIFICATION forming part of Letters Patent No. 700,015, dated May 13, 1902.
Application filed April 9, 1901, Serial No. 55,040, (No model.)To all whoim it may concern: S
Be it known thatI,ANDREW EDWARD CARL-t
SON, a citizen of the United States, residing
at Elcampo, Wharton county, Texas, have in-
5 vented certain new and useful Improvements
in Casing Points or Strainers; and I do hereby
declare the following to be a full; clear, and
exact description of the invention, such as will
enable others skilled in the art to which it ap-
10 pertains to make and use the same.
This invention relates to certain improve-
ments in well-casing points or strainers, par-
ticularly adapted for use in oil and Artesian
wells.
15 An object of my invention is to provide an
exceedingly simple, durable, and economical
casing point or strainer which will permit
free circulation of the liquid arounmid the lower
portion of- the casing and free and easy en-
20 trance of the same into the casing, and yet-
will prevent entrance of sand and gravel into
the casing.
A further object of my invention is to pro-
vide certain improvements in casing points
25 or strainers whereby such an article will be
produced of high efficiency and possessing
many features of advantage.
My invention consists in certain novel fea-
tures in construction, in combination of parts
30 and in arrangements of details, as more fully.
and particularly pointed out and specified
hereinafter.
Referring to the accompanying drawings,
which show, for the purposes of illustration
35 and explanation, a construction as an exam-
ple from among other arrangements within
the spirit and scope of my invention,.Figure
1 is a side elevation of the point or strainer,
the wire netting or gauze covering being
40 shown partially broken away to show the
wire wrapping which can be employed and a
portion of the wire being broken away to show
the truss or stay rods and casing. Fig. 2 is
a side elevation of the device without the
45 wire wrapping and gauze. Fig. 3 is a cross--
section,enlarged,through the point or strainer
and the uptake or suction pipe or casing.
Fig. 4 is a detail perspective view of the lower
end of the point or strainer, the truss-rods
50 being removed and the bottom strainer-plate.
shown separated from the depending legs.
Fig. 5 is a detail elevation of the lower endof the strainer and casing, the strainer-cov-
ering being removed, the casing and end plate
and ring being partially broken away. Fig. 55
6 is a detail section through part of the cas-
ing, showing a means for attaching the upper
ends of the truss or stay rods thereto. Fig.
7 is a detail plan view of the bottom ring.
In the drawings, ais the well pipe or casing, 6o
open.at its lower end a'.
b is a perforated or reticulated plate, in the
example shown constituting the lower end or
extremity or the casing point or strainer and
located opposite and a distance below the 65
open end a' of the casing a. The plate b is
spaced from and supported by the depending
rigid legs c, at their upper ends rigidly se-
cured to, as by rivets, the lower portion of
the casing and at their lower ends suitably 7o
secured to said bottom plate. In the example
illustrated I show three legs c equallyspaced
around the lower end of the casing and de-
pending therefrom virtually in continuation
thereof, each leg being preferably formed by 75
a metal rod having its lower end reduced and
threaded and . passed through said bottom
plate and provided on its lower end with a
nut c', screwing up against said plate. The
upper end of each leg c can be flattened where 8o
it laps over the pipe or casing and perforated
to receive-the fastening means.
An open-work or strainer covering (some-
times eight or ten feet long) is provided ex-
tending from said bottom plate longitudi- 85-
nally of the pipe or casing to a point consid-
erably above the lower open end a' thereof and
forming a water-circulating chamber around
the pipe and at its lower end opening into the
water-collecting space or chamber- between 90
the bottom plate and open end a' of the pipe
and within the said strainer-covering. Said
strainer covering or casing can be composed
of various materials and can be constructed
or formed in various ways within the spirit 95
and scope of my invention.
In the example illustrated I provide a sup-
.porting-framework for said strainer-covering
comprising a series of parallel rods d, arranged
longitudinally of the pipe. At their upper oo
ends said- rods d are secured to the pipe,-as
by hooked ends, (see Fig. 6,) and in. a series
extending around the pipe, so that the upper
ends of all the rods are preferably secured in
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Carlson, Andrew Edward. Casing Point or Strainer., patent, May 13, 1902; Washington D.C.. (https://texashistory.unt.edu/ark:/67531/metapth510353/m1/2/: accessed May 21, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.