Year: 1899

page_text: Date of Application, 12th Oct., 1899-Accepted, 16th Dec., 1899
what manner the same is to be performed, particularly
tained in and by the following statement:-
13372
The present invention relates to a dry electric battery, which has the follow-
ing advantages over all similar batteries of the present day.
1. Facility of construction.
2. Light weight.
3. Considerable zinc surface, the zinc being exposed on all its surfaces and
over all its area, an advantage which has not been realized by previous dry
batteries.
4. Long duration of the battery.
5. Very small cost price.
6. A large yield in ampères, and of great voltage.
7. Absolute absence of leakage, and non-working when the circuit is open.
8. A resistance to very high temperatures, a condition which is of great
importance in connection with automobile purposes.
9. Working in any position.
The arrangement of the present battery will be understood by referring to
Figure 1 of the accompanying diagrammatic drawing, which represents an
element in section.
Figure 2 showing the same in plan, the cover being supposed to be removed,
exposing the zinc with its perforations.
A represents the outer case enclosing the battery, preferably made of wood.
Z represents the zinc element isolated from the casing, to all the sides and walls
of which it corresponds, except one side.
The contact wire or screw is repre-
sented at N.
R represents the carbon element made of granular gas carbon, mixed with an
equal weight of the oxide of manganese of as rich quality as possible, and
enclosing a round plate of carbon, provided with a contact wire or connection P.
The carbon element is strongly bound up in a corded canvas covering and this
is covered preferably with felt. The zinc is provided on the two large sides of
the box or case with perforations of sufficient size to allow the paste to pass
through, the paste being composed of sal ammoniac, chloride of zinc and felt
dust, each of about one-third of the total quantity, to which is added some
tenacious substance such as gelatine, or other similar animal or vegetable sub-
stance, for the purpose of preserving the humidity of the battery. This paste
should fill up the casing entirely. Such a battery is admirably suited for tele-
phones, telegraphs, motor vehicles and cycles, signals of any kind, brakes and
other purposes.

page_text: The form and dimensions of the battery may of course vary.
In the paste the felt dust may be replaced by other inert substance. In the
carbon element the powdered gas carbon may be replaced by any other form of
carbon. Instead of the gelatine paste composed as described in the above, a
glutinous material of any suitable description capable of producing an electric
current in conjunction with the carbon & zinc elements, may be simply placed
within the casing, although the result will not be so satisfactory. The felt may
be replaced by a similar material capable of preserving humidity.
Hng now particularly described and ascertained the nature of the said
invention, as communicated to me by my foreign correspondent, and in what
manner the same is to be performed, I declare that what I claim is:-
1. An electric battery substantially as described.
2. An electric battery of the kind described comprising a zinc element exposed
and active on all its surfaces and area and interior as well as exterior.
3. In an electric battery of the kind described the combination of a zinc element
exposed and active on all its surfaces and area, interior and exterior, with a
carbon element comprising granular carbon and oxide of manganese, substan-
tially as described.
4. In a battery of the kind described a paste of sal ammoniac, chloride of zinc
and an inert material preferably, felt dust, substantially as described.
Dated this 10th day of October 1899..
BOULT, WADE & KILBURN,
Agents for the Applicant.