Improvements in Electric Battery Carbon and Carbon Compound Elements and their Connections.
Year: 1889

page_text: Date of Application, 8th Nov., 1889
Complete Specification Left, 8th Aug., 1890-Accepted, 20th Sept.,
1890
PROVISIONAL SPECIFICATION.
Improvements in Electric Battery Carbon and Carbon Compound
Elements and their Connections.
1, JOHN VAUGHAN SHERRIN, of 3, Codrington Road, Ramsgate in the County of
Kent, Electrical Engineer, do hereby declare the nature of this invention, to be as
follows:-
According to this invention I connect and propare the carbon or carbon compound
elements for primary and other electric batteries in the following manner: In that
part of the upper edge of the carbon where the connection is to be made I lap it
round with a piece of sheet platinum or platinum foil upon which I place a brass
clamp or other connection for the wire. The clamp may be fixed by means of a screw
the point of which bears on an interposed copper plate. To the clamp I connect the
wire by soldering or by a terminal screw. The upper part of the carbon element is
then covered with shellac to a depth of about an inch or two down from the top. The
carbon should be heated so that all moisture is driven off and the shellac enters
the pores.
The shellac may be brushed on hot or cold and should be in the form of
The
a thick paste.
Or the shellac may be put on in any other form or manner.
shellac is also made to cover the whole of the clamp. I then apply heat so as to burn
or highly heat the shellac. This may be conveniently done by means of the blow-
pipe. I prefer to repeat the shellac coating operation one or more times so as to form
a thick coating. The shellac covering thus produced forms a protection to the brass
connection against the action of the electrolyte, prevents the formation of salts on the
upper part of the carbon, and presents a neat and clean enamel like surface.
Dated this 8th day of V-
11080
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Electric Battery Carbon and Carbon Compound
Elements and their Connections.
I, JOHN VAUGHAN SHERRIN of 3 Codrington Road, Ramsgate, in the County of
Kent, Electrical Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
According to this invention I prepare and connect the carbon or carbon compound
elements for primary and other electric batteries in the following manner and as
illustrated by the accompanying drawing.
This
Figure 1 is a front view and Figure 2 an end view of a carbon plate and its con-
nection. In that part of. the upper edge of the carbon A where the connection is to
be made I lap it round with a piece 13 of sheet platinum or platinum foil.
piece is shewn separately in Figure 3. Upon this piece B 1 place a brass clamp C
or other connection for the wire W. The clamp may be fixed by means of a screw D,
the point of which bears on an interposed copper plate E. To the clamp I connect
the wire by a terminal screw For by soldering.
In Figure 4 the wire W is shewn connected by soldering and laterally.
Figure is an end view and Figure 6 plan of another form of clamp C which
moreover is fixed to the carbon plate by a screwed piece of wire which is cut off a
length of such wire and then a notch filed in the end. The upper part of the clamp C
has a cross slot c which terminates in a slot c¹. The wire connection F shewn in
side view and end view at Figures 7 and 8 has two feathers which can be passod

page_text: in the slot c whereupon the connection is turned round at right angles as shewn in
Figure 6. To the upper end of the connection F the wire is soldered or otherwise
connected. Or the feathers f and the slots c and e' may be omitted and the con-
nection F of simple plug form fit in a plain hole in the clamp C.
In Figure 9 a short piece of flexible wire W is soldered to the clamp C and to a
connection F of the form shown in Figures 7 and 8. In this case as another example
the clamp is fixed to the carbon plate by a piece D of screwed wire, cut off n
length of such wire flush with the outside of the clamp.
Figure 10 shews a clamp like Figure 9 but with the flexible wire W soldere to
a piece of brass F to which the wire W can be attached by a screw; or a simple
plug on the end of the wire W fitting in a hole in the clamp Omay be used.
In Figure 11 I have shewn three carbon plates having their wires W connected to
a common bar W
The
The upper part of the carbon element is in each case covered with shellac mixed or
not with a small amount of lamp black to the depth of about an inch or two down
from the top as shown by the dotted lines A' in Figure 1. The carbon should be
heated so that all moisture is driven off, and the shellac enters the pores.
shellac may be brushed on hot or cold and should be in the form of a thick paste.
Or the shellac may be put on in any other form or manner, it may also be made to
. cover the whole of the clamp. I then apply heat so as to burn or highly heat the
shellac. This may conveniently bo done by means of the blow pipe.
repeat the shellac coating operation one or more times so as to form a thick coating.
I prefer to
In order to protect the brass clamp I cover it and the adjoining part of the gutter
percha covered wire W or W with the so called Chatterton's compound as shewn
in dotted lines G in Figures 1 and 2 and in full lines in Figure 4.
The aforesaid shellac covering thus produced prevents the formation of salts in the
upper part of the carbon thus presenting also a neat and clean enamel like surface
while the clamp is also fully protected against the action of the electrolyte, on the
inside by the platinum foil and on the outside by the Chatterton compound.
Having now particularly described and ascertained the nature of my said inven
tion and in what manner the same is to be performed, I declare that what I
claim is :-
First. In clamps for battery carbon or carbon compound electrodes the application
of a platinum foil B for protecting the inside and of a Chatterton compound covering
for protecting the outside against the action of the electrolyte, substantially as set
forth.
Second. The construction of clamp described with reference to Figures 5, 6, 7
and 8.
Third. A battery carbon or carbon compound electrode and clamp protected again-t
the action of the electrolyte in the manner described.
Dated this 8th day of August 1890.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.