A New or Improved Plate for Accumulators or Electric Storage Batteries.
Year: 1897

page_text: Date of Application, 15th Apr., 1897
Complete Specification Left, 15th Feb., 1898-Accepted, 19th Mar., 1898
PROVISIONAL SPECIFICATION.
A New or Improved Plate for Accumulators or Electric Storage
Batteries.
I, JOHN DUNN, of 9, Walton Gardens, Woking, Gentleman, do hereby declare the
nature of this invention to be as follows:-
My invention relates to a new or improved plate for accumulators or electric
storage batteries, the object of which is to provide a thoroughly reliable and efficient
plate capable of retaining the paste in position without fear of its breaking and
falling out, as is the case with many of the plates now upon the market. My
improved plate is further extremely light and at the same time of great strength
so as to withstand the strains to which it is subjected, while owing to its form of
construction a saving of material is effected which allows of it being cheaply
produced.
In carrying my invention into practical effect, I provide a suitably shaped frame,
preferably rectangular, said frame being fitted with a series of cross bars arranged
either vertically, horizontally, or diagonally across the plate, the bars being either
straight, or curved to any suitable form as required.
Each bar is grooved or recessed out on both sides so as to lighten the plate, thereby
effecting a saving in material, and to afford a ledge or hold" for the paste, while
the inner edges of the frame within which the said bars are arranged may be also
be grooved out or recessed for a like purpose.
101
COMPLETE SPECIFICATION.
A New or Improved Plate for Accumulators or Electric Storage
Batteries.
I, JOHN DUNN, of 9, Walton Gardens, Woking, Gentleman, 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:--
4
My invention relates to a new or improved plate or grid for accumulators or
electric storage batteries, the object being to provide a thoroughly reliable and
efficient plate or grid capable of retaining the paste in position without fear of its
breaking and falling out as is the case with many of the plates now upon the market.
My improved plate grid is further extremely light and at the same time of great
strength so as to withstand the strains to which it is subjected, while owing to its
form of construction a saving of material is effected which allows of it being cheaply
produced.
or

page_text: In carrying my invention into practical effect, I provide a suitably shaped frame,
preferably rectangular, said frame being fitted with a series of cross bars arranged
either vertically, horizontally, or diagonally across the plate, the bars being either
straight, or curved to any suitable form as required.
Each bar is grooved or recessed out on both sides so as to lighten the plate thereby
effecting a saving in material of which the plate or grid is constructed and to afford
a ledge or hold" for the paste, while the inner edges of the frame within which
the said bars are arranged may also be grooved out or recessed for a like purpose.
"
In order that my invention may be more fully understood, I will now proceed to
describe same with reference to the accompanying drawings in which Fig. 1 is an
elevation of a plate or grid constructed according to my invention showing two
different arrangements of the bars.
Fig. 2 is a cross section of a plate or grid constructed according to my invention.
My improved accumulator plate or grid comprises a preferably rectangular
frame furnished with a series of straight bars arranged vertically for pre-
ference or curved bars as shown at c may be employed, or they may be arranged
in any other suitable form, the essential feature being the groove or recess formed
upon each side of the bar in such a manner as to leave a stiffening web furnished
upon each side with a flange h Fig. 2, and by this means the paste is firmly held
or retained in the plate without fear of its breaking and falling out which now fre-
quently occurs, while the bars constructed in this manner possess the further
advantages of strength combined with rigidity.
9
The bars may be either arranged equidistant throughout the plate or they may
be placed in two sets leaving a sufficient space between the said sets to allow of
what is technically known as the " growth of the plate.
I do not restrict myself to any size or particular formation as regards dimensions
of the bars, as the size and strength of the web y and the flanges h may be altered
and varied according to the purposes for which the plate is intended, and the par-
ticular kind of work the accumulator or secondary battery is required to perform.
A stiffening or strengthening rod such as d may be passed through the plate if
required.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The new or improved plate or grid for accumulators or secondary batteries,
comprising a suitably shaped frame fitted with interior bars arranged in any con-
venient manner, said bars being essentially furnished upon each side with a groove
or recess for the more perfect retention of the paste or active material in position,
substantially as herein described and shown with reference to the accompanying
drawings.
2. In a plate or grid for accumulators or secondary batteries, consisting of a
suitable frame furnished with conveniently arranged bars, the formation upon each
side of the said bars of a groove recess substantially as herein described and shown,
and for the purposes specified.
3. The new or improved plate for accumulators or electric storage batteries,
substantially as herein described and shown, and for the purposes specified.
P
1000
F. G. CASSELL
(Of Cassell & Co.),
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.