Year: 1888

page_text: Date of Application, 9th Feb., 1888
Complete Left, 4th May, 1888
Complete Accepted, 6th July, 1888
WALTER TILLEY of No. 11, Lewos Road, Brighton in the County of Sussex
Merchant and Enginoer do hereby declare the nature of this invention to lio as
follows:-
The improvement relatos more particularly to the form of plates used in the positive
element and combination of the plates used in the negativo olomont. Those of the
positive element are made of thin perforated sheets of load, tho porforations being
indented so as to koop each layer of plates at a distance from each other and allow of a
free circulation of the current through the liquid to all the surfaces of the plates and:
also to present a large working surface with a minimum of weight of metal; tho
thin perforated layers of the plate are connected together and a strip of metal runs
throughout the length of the plate and is connected to each layer of the plato and
which forms a convenient and offectual conductor for the current; at the end of this
strip is the terminal, the edges of the plates being fastened together forms a very
compact peroxide plate which is not liable to buckle or become distorted; The
negative or hydrogen plate may be similarly made of perforated lead sheet or it may
preferably be combined with zinc, the lead forming a case, for the zinc plate which
retains the advantages of the zinc olement without the disadvantages usually connected
with its use the perforated lend forms part of the negativo alement and while acting
between the zinc and the positive element as a porous diaphragm but not offering the
resistance as is usual with porous pots or felt, provents the forming of zinc troos
between the two elements. By the general arrangement and treatment of theso
forms of plates the storago capacity is much increased for the weight of matorial
employed and the forming process is expediated. The elements aro insulated from
each other by bands or strips of insulating material and the whole is placed into a
convenient box containing à conducting fluid..

page_text: Electricity.
WALTER TILLEY Merchant and Engineer of No. 11, Lowes Road, Brighton in the
County of Sussex 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 statemont :-
This improvement relates more particularly to the form of plates used in the positivo
element and combination of the plates used in the negative element. Those of the
positive clement are made of thin perforated sheets of lead, the perforations being
indented so as to keep each layer of plates at a distance from each other and allow of
a free circulation of the current through the liquid to all the surfaces of the plates and
also to present a large working surface with a minimum of weight of metal; tho
thin perforated layers of the plate are connected together and a strip of motal runs
throughout the length of the plate and is connected to each layer of the plato and
which forms a convonient and effectual conductor for the current; at the end of this
strip is the terminal, the edges of the plate being fastened together forms a very
compact peroxido plato which is not liable to buckle or become distorted. The
negative or hydrogen plate may be similarly made of perforated lead sheet or it may.
preferably be combined with zinc, the load forming a caso for the zinc plate which
retains the advantages of the zinc element without the disadvantages usually connected
with its use the perforated lead forms part of the negative olement and while acting
between the zinc and the positive element as a porous diaphragm but not offering the
resistance as is usual with porous pots or felt, prevents the forming of zinc trees
between the two elements. In some cases such as in small accumulators it is some-
times desirable to envelop the whole of the negative element in a porous and
nonconducting diaphragm and I propose when desirable to use the zinc or the zinc
and lead combined enveloped in a case of vulcanized tissue which is extremely porous
and a perfect insulator, offering but little resistance to the current.
By the general arrangement and treatment of these forms of plates the storago
capacity is much increased for the weight of material employed and the forming
procoss is expediated.
When the vulcanized tissue is not used the elements are insulated from each other
by bands or strips of other insulating material and the whole is placed into a
convenient box containing a conducting fluid.
In the drawing sent herewith, the sketch marked A is the positive element which is
to be perforated all over its surface as shown in the right hand top corner; these
perforations are indented similar to a nutmeg grator the indentions forming the
projections which keep each layer of plato apart; a is the strip of metal running
through the plato, and which conducts the current to the terminal : B is the side
view of A and the letters a and b refer to the same as on A.

page_text: C is the negative element of which c is the zinc plate soldered to which is the
terminal 6 which is split to receive the plate as shown: d is the outside caso of
vulcanized tissue which is sometimes called thin vulcanized fibre. If lead is used in
the negative element with the zinc it envelops the zinc plate inside of the tissue caso
or partition. D is plan of A in which ff are the two layers of perforated plate and e
the space between them maintained by the indentions of the perforations of the
plate.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be perforined, I declare that what
I claim is:
1. The use of perforated metal whoso perforations are indented so as to form
distanco pieces to separate the plate.
2. The combination of lead or lead compound and zinc in the negative element.
3. The use of vulcanized tissue for norons lionhram and insulates