Dec. 21 , 1926.
ì
_
R. c. BENNER E'r Az. ,
' DRY CELL AND PRodEss oF MAKING THE SAME
Filed Nov. 21 , 1923
:l:
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1,611,153
` 1,611,153
Patented Dec. 21, 192e.
*UNITED sr
.RAYMOND C. BENNER, 0F B_ALYSIZDE,y AND HOMER W. JoNns, or rLUsnme, »NEW roux,
1 ASSIGNORS TC NATIONAL ; CARBON COMPANY,
YORK.
INC., A CORPORATION OI.’4 NEW
_may CELL AN‘nrRocnss or runtimev rmi sum.
Application mea novenbefarnisee. serial No. 676,137.
This invention relates to dry cells of. the ing collar 8, imperviousv tof
_
15s"
flat Atype embodying a shallow container -„fitted
lclrcumference
over the' of
portion]
the cell.and
1 'entends
’ ,totheV
i
"
which forms one electrode-óf the ccll._ _A
'principal object of the invention 1s to pro the zinc cup is turned inwardly-upon
the* »
5 vide improved and4 simplified means 'for insulating collar 48, ‘forming’ `a»f_'re_ta`in1ng
holding the parts -of thecell together, pref. ~ flange -9. The collar should be _made of
erably under compression. ._
capable "of resisting the -compressive
yVarious forms of cells constructed-as 1n )material
force
applied.
Tough. über board vimpreg
dicated generally- above have, heretofore- natedzwithlparaiiin
is a suitable material. ce
’ been devised. These cells ordinarily 'coin-_
The
cell
should
be
compressed'to
.the
prise separate elements adapted to cooperate `most efficient contact between thesecure
reactive
with the container electrode in retaining _the elements, and the flange9 should be formed ' i
'other parts of the cell. Such'elements may
>be a' top fitting upon the container electrode,
a wrapping of fabric, an incrustation _of
a plastic, such as celluloid, and otherspecial
securing means. Frequently separate- pro
vision is made for placing the cell under
while the cell is so compressed. In this
way the desired degree. rof contact will be
permanently maintained.
f
'
70
In the cell shown in Figs. 3 and 4, the
means for securing the 4parts isessentially
same as that previously described, but
compression, by screws, wedges, or lequiva the
the cellarrangement is modified. The zinc
electrode 1>0 is formed with a shoul
In accordance with our invention, the ad» container
der 11 extending inwardly fromits walls and
„vantages of the type of cells referred to are bounding
al pastereceptacle 12 in the con
obtained with >marked simplification 'of
bottom. -An electrolyte-proof insu
structure by utilizing an inturned portion of. tainer
lating lining 13 conforms to the container
the wall of the container electrode to hold wall
14 and overlies the shoulder 11. A co
the assembly together. _ In a preferred form,
lent
devices.
_
~
- Y
the wall of the container electrode is crimped ' herent block of depolarizer 15 rests upon the
inwardly at its upper margin .upon an insu
lining of the- shoulder. A. “duplex” elec--
lated portion of a plane electrode ofoppo- _ trode, consisting of'a metal plate 16 with a
O
carbonaceous- coating 17, is placed
site polarity, which forms a closure for the conductive
upon the depolarizer, the coating 17 being'
container.
35
_
~
.
'
-
I
contact therewith.
,
»
The inventionwill be described in detail in The
upper portion 18 of wall 14 is turned
in connection with the accompanying dra‘w inwardly
and presses the lining against the
ings, in which_
_
electrode. The lining should extend 90'
Fig. 1 isa vertical section through a cell duplex
farther over the- duplex electrode than does
having the improved closure;
.
the crimped portion of the wall. In this
Fig. 2 is va top plan View of the cell; _
contact between the zines’of adjacent
Fig. 3 is a vertical‘section through a mod way
cells is prevented and the cells are properly
ilied'form of cell;
40
.
>
.
centered when stacked to- make series con-A
Fig.4 iis a top plan view of the same; .
Fig. 5 is a vertical section through a cell nectiony between the duplex electrodes and
f similar to that shown` in Fig. 3, but having
the zinc containers.
-
i
>
In the form ofthe invention shown in
the position of the electrodes reversed; and Fig.
a zinc electrode 19 forms the top
Fig. 6 is a view similar to Fig. 5, showing of the5, cell.
The cathode is a sheet metal 100
"l a modified form ofv insulating means.
container
20
provided
with a conductive car
Í ` Referring izo-Figs. 1 and 2, reference _nu bonaceous layer 21 upon
its bottom. A de- _'
' meral 1 denotes a’ cylindrical ‘zinc cup lined
with bibulous paper 2, or the like, and con polarizer mass 22 rests upon the layer `21
is spaced from the zinc electrode 19 by
taining a layer 3 of electrolyte paste upon aandmarginal
insulating strlp 23.' The >cen '105
its
bottom.
A_
disc
4
of
-suitable
material,
,en
ltral
area
of
the lzinc electrode is< elevated
such as pulp board, separates the electro
`to
the margin tov provide a
withl
respect
lyte paste from depolarizìng mix 5. A car
electrolyte
paste 24. An insu
chamber
for
bon plate 6, preferably havlng a protruding
portion 7 , rests upon the mix. An insulat» lating strip 25 conforms to the walls of the
1,611,158
container 20 -and when these are crimped
been secured to cells by crimping, spinningh
inwardly, as at 26, the strip spaces the walls or
punching the metal of the container elec- ,
from the zinc.
trode
to engage the cover.y Such construc-j
The conductivelayer upon `the bottom of_
the container may be extended u wardly on tions are not applicable to cells in which an
the side walls, replacing the insu ating strip electrode is use as the closure. Thev pres
25. This form of cell 1s illustrated in Fig. ent invention provides a practical way of
e.' wherein 27 denotes a sheet metal con simultaneousl securin , compressing, and
tainer having its bottom and'walls lined sealing the _eements o cells of this latter
with 'an im ervious> conductive material 28. type. The embodiments described are' il
lustrative only, and variousy modifications
This shouldì extend to a point adjacent the may
be made within the `scope'of the .ap
zinc electrode 19 and is an effectual pro
tection against corrosion ofthe side walls. y
15
30
claim:
v
-
`
'
g
'y
'
75
‘
placed below and above the marvin of the. 1. A_dry cell _comprising a container elec
trode, electrolyte and de olarizer therein,
the mix 22 and t
25
e
Annular Ainsulating strips 30 and 31 are
zinc electrode to s ace it respectively from
20
pended claims.
said container electrode having its walls
e flange 26. The aste crimped inwardly at the top, a second elec
24: may only partially till its chamber,- eav-` trode
forminer a closure for lthe container
ine room for exàaansion.
electrode, and an insulating member conf
It is preferre >to 4use duplex electrodes, forming
to the walls of the container elec
because of 'their superior conductivity,
strength, flexibility, and space economy. trode and spacing the -crimped portion of
They may be made as described in the ap he same from the said second'electrode,
said insulating member also serving >to com
plication of R. C. Benner, Serial No. 534i,-r pletely
space the depolarizer mix from ‘conf
509, filed February 6, 1922; that is by coat tact with
metallic parts of the container.
ing zinc or other sheet metall on one surface
v2. . dry cell having a metallic container
with a graphite-containing plastic adapted serving
as one electrode and a closure for
80
85
to harden upon the metal. Other suitable
the container serving as the other elect-rode,
methods may be adopted. such as forcing electrolyte
and depolarizer therein, insulat»
graphite particles into a plastic applied to ing means lining the container and spacing
tile liquid and brushing »or spraying the the depolarizer and closure therefrom.
the metal, or suspending graphite in a vola
3. A dry cell having a metallic container
suspension on a metal backing. Barattin
serving
as one electrode and a closure there
may be used -as a binder for the graphite
35 particles.
f
`
Insome cases juxtaposed plates of carbon
and metal are the equivalent of the duplex
electrode. Carbon plates alone may be
95
for serving as the other electrode, active ma
terial therein, and suitable lining means
spacing the active material and closure from y
the container.
4. A dry cell having'v a metallic container
used, as in the cell of Figs. 1 and 2. 'l‘he
carbon plates should generally be rather serving as the anode anda closure therefor
40
serving as the cathode,- electrolyte and de
polarizer
therein, a lining 'for the container
As an incident to the improved means for spacing the
and depolarizer there 106
securing the cell elements in assembled rela from, and a cathode
seal comprising material im
tion under the proper 'amount of compres
sion, there is the important advantage of pervious to electrolyte compressed between
thick, to guard against breakage.
.
45
an upper crimped-in portion of the contain
securing an electrolyte-proof seal for the er
and the closure.
cell. No liquid escapes between the cell
cover vand the retaining flange formed by
50
55
00
5. In a dry cell, a metallic container serv 110
i g as an electrode, a closure serving as
the crimped container wall, since the insu
lating material compressed between these the other electrode, electrolyte and depolar
parts forms an impervious packing. The. izer therein, and insulating means within
`seal is ordinarily hermetic. This is per the container andfspacing the depolarizer
missible when the cells are to be used in low and closure therefrom, said container hav
115
ing a circular boss on the bottom thereof
drain work, a'_s for example in radio B and
being folded over at the top over the
batteries, since there is no large evolution
of gas. If the cells are to be subjected to closure and insulating mea-ns. said insulat
heavy current drain, a gas vent should be ing meansextending beyond the folded_ over .
120
provided. This may be formed by making portion of the container."
In testimony whereof, I allix my slgna
¿i4-perforation in the cover, or in other suit
able ways. 0r a portion of the cell may be
ture.
left vacant to serve as an expansion cham
ber, as shown in one form 1n Fig. 6.
We are aware that insulating covers have
.
,
RAYMOND C. BENNER.
In testimony whereof, I affix my signa-y
ture.
.
HOMER w. Jonas.. .