Electric Battery Page: 3 of 4
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1,433,136
preferably employ is quartz, or rock crystal
or pure crystallized silicon oxide, (SiO2).
With this one part by weight of the first
named mass of silica flour I add one part
5 by weight of a mass containing a mixture of
calcium sulphate and phosphoric acid. This
mixture is obtained by treating bone meal
with 1300 specific gravity sulphuric acid,
whereby calcium sulphate (CaSo4) and phos-
10 phoric acid (H3Po,) are obtained. I next
remove as far as possible, all traces of the
uncombined sulphuric acid. This is accom-
plished by letting the mass settle, with the
calcium sulphate and phosphoric acid or
15 precipitates at the bottom, and pouring or
drawing off the acid solution from the top
of the mass. Further water is added, and
after settling the acid solution is again with-
drawn. This may be repeated a number of
20 times, and when practically all traces of the
acid have been removed, the precipitate is
spread out on a flat surface.and will become
thoroughly dry. It is this mass containing
dry calcium sulphate and phosphoric acid,
25 obtained as above explained, which is added
in an equal part by weight, with the first
named mass of silica flour, above described.
I next add an equal part by weight of a
mass containing lead sulphate. This ma-
30 terial is produced by treating dry white lead,
lead carbonate (PbCO3) with 1300 specific
gravity sulphuric acid. As a result of this
treatment, 75% of lead sulphate and 25%
hydrated lead, oxide are obtained. The mix-
35 ture is allowed to settle, the precipitate con-
taining the lead sulphate and the hydrated
lead oxide settling to the bottom. The ex-
cess acid in the top of the mass is withdrawn,
and water added, and the mass again allowed
40 to settle, and the acid solution at the top
withdrawn. This operation may be con-
tinued a number of times until practically
all traces of the acid are removed. The
precipitate is then spread on a flat surface
45 and dried. This dried mass, is added to
the other masses, in an equal part by weight,
with respect to each mass.
I also'provide an equal part by weight
with respect to each mass of an inert filler,
50 such as inert earth, such as fuller's earth,
kieselguhr, or the like.
These four masses, in equal proportions
by weight, as above stated, in the dry form,
are now thoroughly mixed and the resultant
55 mass is introduced into the cells 7. I pref-
erably introduce some of this mass into the
cell 7 prior to the introduction therein of
the 'plates, and add a sufficient amount to
fill the lower portion of the cell, up 'to the
60 top of the supporting ribs 15. The elements
or plates 8 and .9 are next introduced into
the cell and this dry powdered mass intro-
duced into the cell upon opposite sides,
about and between the plates and the walls
65 of the cell, to completely fill all of the spacessurrounding the plates. The dry mass is
preferably tamped or slightly packed so
that all spaces will be filled. I now add to
this dry mass 1300 specific gravity sul-
phuric acid, and add as much acid to the 70
dry mass as it will absorb, but as soon as the
absorption point is reached, the acid is
stopped.
After thus applying the acid, I take some
of my dry composition, and add thereto an 75
equal amount of plaster Paris, and mix the
same into a liquid by adding distilled water.
This liquid is now poured on top of the
plates and composition therebetween, and
upon drying produces a hard covering or 80
coating. The top of the casing 5 is now
placed in position and sealed to the casing.
The top or cap 7 of the casing is provided
with. an opening which may be equipped
with a detachable vent cap 8', to permit 85
of the escape of moisture, and the addition
of water to the composition within the cell,
if necessary.
The battery thus produced may be charged
and discharged in the usual manner. I have 90
found that a battery of this type will operate
for a long period, such as a year or more,
without the addition of water and without
any terminal traces of corrosion, and also
reducing the escape of gas to the least possi- 95
ble minimum.
It is to be understood that the form of my
invention herewith shown and described is
to be taken as a preferred example of the
same, and that various changes in the size, 100
shape, and arrangement of parts may be
resorted to without departing from the spirit
of my invention or the scope of the sub-
joined claims.
Having thus described my invention, I 105
claim:
1. An electric battery, comprising a cas-
ing, positive and negative plates within the
casing, and a composition surrounding the
plates within the casing, said composition 110
including silica flour, a mass including cal-
cium sulphate and phosphoric acid, a mass
including lead sulphate and hydrated lead
oxide, 'an inert absorbent finely divided
mineral material, and sulphuric acid. 115
2. An electric battery, comprising posi-
tive and negative elements, and a composi-
tion held in contact with said elements, said
composition including silica flour, a finely
divided mass including calcium sulphate 120
and phosphoric acid, a finely divided mass
including lead sulphate, an inert absorbent
earth, and an acid absorbed in said com-
position.
3. An electric battery, comprising posi- 125
tive and negative elements, and a composi-
tion held in contact with said elements, said
composition comprising finely divided crys-
tallized silicon oxide, a mass including finely
divided calcium sulphate and phosphoric 1so
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Reference the current page of this Patent.
Holmes, Frank M. Electric Battery, patent, October 24, 1922; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1256369/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.