Apparatus For Cementing Wells. Page: 3 of 4
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UNITED
STATES
PATENT OFFICE.
AUGUST BACA, OF FAYETTEVILLE, TEXAS.
APPARATUS FOR CEMENTING WELLS.
SPECIFICATION forming part of Letters Patent No. 637,693, dated November 21, 1899.
Application filed April 8, 1899. Serial No. 712,287. (No model.)To all whom it imay concern:
Be it known that I, AUGUST BACA, a citizen
of the United States, residing at Fayetteville,
in the county of Fayette and State of Texas,
5 have invented new and useful Improvements
in Processes of and Apparatus for Cementing
Wells, of which the following is a specifica-
tion.
My invention relates to apparatus for ce-
10 menting wells.
It is the object of my invention to provide
means for cementing wells as the same are ex-
cavated or for cementing the walls of old
wells in an efficacious, rapid, and economical
15 manner.
I have illustrated my invention in the ac-
companying drawings, in which-
Figure 1 is a sectional view through a por-
tion of a well, showing the method of proced-
a ure. Fig. 2 is a plan view of the invention
as applied to cementing an old square well.
Fig. 3 is a sectional view,enlarged,of the same;
and Fig. 4 is a view in elevation of a portion
of a mold, showing the fastening means.
25 The reference-numerals 1 2 3 4 indicate a
series of circular molds, each of which is
formed in six parts, detachably connected by
means of hinge-hasps 5 and keepers 6, as
shown in Fig. 4. These molds are about two
30 and one-half feet high and may be made of
any desired diameter. In proceeding accord-
ing to my invention in making a new well a
circular excavation is first made in the ground
of the depth of the mold, but of considerably
35 greater circumference, so as to leave an an-
nular space 7 between the mold and the earth
wall of the well. This space is then filled in
with cement or preferably a compound formed
of cement, sand, and crushed stone. After
40 this filling has set or become sufficiently hard
a further excavation is then made of the same
circumference as the first, but about three feet
in depth. A second mold (indicated by 2) is
now inserted, resting on the bottom of the last
45 excavation, owing to the depth of which exca-
vation a space 8 is left between the two molds.
Through this space the cement or filling com-
pound is poured into the annular space sur-
rounding the mold by means of a pipe 9, hav-
50 ing a bent end 10 inserted in said space. The
same process is continued in the further ex-
cavation and filling in around the molds, andas fast as the cement or compound has thor-
oughly hardened around a top mold it is re-
moved and used at the bottom of the well. 55
Before the molds are removed, however, the
space 8 is first filled in by means of a trowel
or the like. It will thus be seen that by means
of my invention a cement well of any re-
quired size and depth can be readily made. 6o
My invention is designed in its chief appli-
cation, however, to re-forming and cementing
wells which have already been dug, and as
these wells are usually of rectangular shape
I have illustrated this application of my in- 65
vention to such form of well in Figs. 2 and 3.
The reference-numeral 11 indicates the walls
of an old square well, which are usually of
wood, and which well it is desired to cement.
In proceeding in this case I first make a cir- 70
cular excavation around the well with a ra-
dius equal to one-half the diagonal line of the
original well or with a greater radius, if de-
sired, said excavation being of the depth of
one mold. The edge of this excavation is in- 75
dicated by 12 in Fig. 2. The mold 1 is then
inserted in place and the annular space sur-
rounding it filled in, as previously described.
A further excavation is then made and mold
2 placed in position and the annular space 8o
surrounding it filled in by means of the pipe
9. After the cement around the second mold
has hardened I then employ a series of hang-
ers 13, having hooked ends 14, which engage
over the upper edge of the mold, and brack- 85
ets 15 at their lower ends, by means of which
a suitable platform (not shown) may be sup-
ported on said brackets for the workmen to
stand on in the further excavation and ce-
menting, the hangers 13 being of course low- 95
ered from one mold to another as the exca-
vation proceeds. In order to brace the mold
on which the hangers 13 may be supported,
I provide a series of hangers 16 of a length
to extend from the bottom of one mold to the 95
top of the one next above it, and each hanger
having a hooked end 17 to engage over the
edge of a mold and an opposite end bent at
right angles to the body of the hanger, as
shown at 18, to engage beneath the bottom of ioo
the mold supporting the brackets and plat-
form, as clearly shown in Fig. 3. The hang-
ers 16 may also be used irrespective of the
hangers 13 to support a lower mold from an
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Baca, August. Apparatus For Cementing Wells., patent, November 21, 1899; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth510600/m1/3/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.