Well Screen Page: 2 of 4
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UNITED STATESPATENT OFFICE.
MAHLON E. LAYNE, OF HOUSTON, TEXAS.
WELL-SCREEN.Specification of Letters Patent.
Patented Nov. 21, 1905.
Application filed June 25, 1903, Renewed January 3, 1905. Serial No, 239,426.
To all wh07m it imay concern:
Be it known that I, MAHLON E. LANE, a citi-
zen of the United States, residing at Houston,
in the county of Harris and State of Texas,
5 have invented a certain new and 'useful Well-
Screen, of which the following is a specifi-.
cation.
My invention relates especially to well ap-
paratus or to means for straining liquids ad-
io mitted to inlet pipes such as commonly em-
ployed in driven wells; and particularly to the
construction of the sand screens used in wells.
The objects of my invention are, to provide a
superior form of wire adapted for making
15 well screens and being of a sectional shape to
give great strength and to insure the screen
against- being clogged by dirt; to provide a
cheap and superior construction of skeleton
frame for supporting such a wire screen; to
20 provide a superior method of fixing the wire
upon the frame of the screen and to generally
improve the efficiency and strength, and
cheapen the construction of well screens. The
said objects, together with other advantages
25 which will hereinafter appear, I attain by
means of the construction illustrated in pre-.
ferred form in the accompanying drawings,
wherein,-
Figure 1 is a perspective view of' an im-
30 proved form of skeleton frame for supporting
the screen.
Figure 2 is a vertical longitudinal section
through my improved well screen built upon
the frame of Figure 1.
35 Figure 3 is an end view of the skeleton
frame and the screen.
Figures 4, 5 and 6 represent cross sections
through the wire as wound on the frame and
showing the wire in three different stages in
40 the improved mode of fixing the same in place.
Figure 7 illustrates a modified form of con-
necting the edges of contiguous strands of the
wire."
Figure 8 is a fragmentary perspective view
45 showing a well screen formed, of my superior
wire and fixed in place on a frame by my pe-
culiar mode of interlacing the touching edges
of the helix of wire, as will be hereinafter
described; and
.50 Figure 9 is a modified form of wire having
edges easier to depress, shown mounted on a
perforated pipe.
As is well known it is common in driven
wells and other places where it is desirable to
55 take water into a pipe from a loose material
such as strata of sand or gravel, to use on theend of the pipe a screen or structure provided
with small openings to stop the solid matter
and allow the water to go through. It is cus-
tomary to make such screens by winding wire 6o
either upon a frame or upon a perforated pipe.
It is necessary in order that the particles .of
solid matter may not wedge themselves in the
openings between the windings of the wire,
to use a wire of such cross sectional form that 65
the openings are narrowest at the outside sur-
face and enlarge toward the interior of the
screen. It is also highly desirable that the
frame upon which the screen is held be ex-
tremely solid and strong and at the same time 70
take up as little room as possible.
In my preferred form of skeleton frame A
as shown in Figure 1, I use a series of rings 9
which are provided with radially extending
lugs 11 formed of such shape as to take in the 75
bars 10, whereupon the lugs 11 may be bat-
tered down to clinch upon the rods and hold
them firmly in position. The skeleton A is
for the purpose of supporting the wires form-
ing the screen as shown in end view at Figure 8o
3. Upon this frame may be wound any de-
sired form of wire, but I prefer the form
shown in cross section at Figure 4, which is
essentially a truncated pyramid having the
wider part outside, so that the spaces between 85
the adjacent turns of wire are narrower at the
outside and grow larger toward the inner side,
so that any particles of solid matter passing
through the outside edges will freely flow
through the pipe and not clog the opening. 90
This wire I preferably wind tightly upon
the frame A so that the successive turns leave
parallel slits between them as shown in Figure
2. Small sections 13 of alternate turns, lying
immediately over the supports 10, are there- 95
upon depressed, as shown in Figure 5. The
intermediate turns 14, as shown in Figure 6,
are then depressed so as to overlap the pro-
jecting edges 13 in the first series, whereby
each wire is locked in place by the overlap- 100
ping of the depressed edges of the wire on the
two sides of it, as will be clear from Figure
8. Otherwise, the portions of the wire im-
mediately above the support 10 may be bat-
tered down or depressed equally upon all the 105
turns so that they will all just touch each
other at intervals as shown in Figure 7. It
will be understood that it is necessary to de-
press the wires so as to make them come in
contact with each other only at lengthened 110
intervals, sufficient to lock them together and
hold them firmly against lateral displacement.1'o. 805,211.
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Layne, Mahlon E. Well Screen, patent, November 21, 1905; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth509770/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.