An Improvement in Secondary Voltaio Batteries.
Year: 1893

page_text: Date of Application, 28th Jan., 1893
Complete Specification Left, 15th Aug., 1893-Accepted, 30th Sept., 1893
PROVISIONAL SPECIFICATION.
[Communicated from abroad by LA SOCIÉTÉ ANONYME POUR LE TRAVAIL
ELECTRIQUE DES METAUX, of 16, Rue Drouot, Paris, France.]
An Improvement in Secondary Voltaio Batteries.
I, HAROLD IMRAY of No. 28 Southampton Buildings, Chancery Lane in the
County of London, Chartered Patent Agent do hereby declare the nature of this
invention to be as follows:-
This invention relates to the suspension of the plates of a secondary voltajo
battery in such a manner that while they are in complete electrical connection with
the conductors, they are free to expand or contract and are not subject to any
lateral strains such as are apt to cause contact of adjacent plates of opposite
polarities.
"
For this purpose, each plate, the acting part of which is of rectangular form
generally of depth considerably greater than its width, is made with a shoulder
projecting at each side near its upper edge. These shoulders which are submerged
in the liquid rest on fillets of wood or other insulating material extending along
each side of the cell. In order to keep the plates parallel, their edges are engaged
in vertical grooves formed in the sides of the call, but they are sufficiently loose in
those grooves to allow of expansion or contraction or slight warping of the plates.
From the upper edge of each plate an arm oxtends on one side upwards and
outwards and the end of this arm is notched to engage on a longitudinal screw
threaded conducting rod between two nuts which clamp the arm. The arms of all
the positive plates are thus clamped to a conducting rod on say the right hand side
of the cell, and the arms of all tho negative plates are similarly clamped to a
conducting rod on the left hand side.
Dated this 28th day of January 1893,
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improvement in Secondary Voltalo Batteries.
I, HAROLD IMRAY of No. 28 Southampton Buildings, Chancery Lane in the
County of London, Chartered Patent Agent, 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 :-
This invention relates to the suspension of the plates of a secondary voltaic
battery in such a manner that, while they are in complete electrical connection with
the conductors, they are free to expand or contract and are not subject to any
lateral strains, such as are apt to cause contact of adjacent plates of opposite
polarities.
For this purpose I construct the cell and plates as shewn in vertical sections
Figs. 1 and 2 on planes at right angles to each other. Each plate, the acting
part A. B. B. of which is of rectangular form generally of depth considerably
greater than its width, is made with a shoulder projecting at each side near its upper
edge. These shoulders which are submerged in the liquid rest on fillets of wood or
other insulating material extending along each side of the cell. In order to keep
the plates parallel, their edges are engaged as shewn by Fig. 3 in vertical grooves a
formed in the sides D of the cell, but they are sufficiently loose in those grooves to
allow of expansion or contraction or slight warping of the plates. From the upper

page_text: edge of each plate an arm extends on one side upwards and outwards and the end
of this arm is notched to engage on a longitudinal screw threaded conducting rod
between two nuts which clamp the arm. The arms of all the positive plates are
thus clamped to a conducting rod on say the right hand side of the cell,.and the
arms of all the negative plates are similarly clamped to a conducting rod on the
left hand side.
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 :-
The herein described mode of supporting the plates of a secondary voltaic
battery by suspending them in the cell by shoulders at their upper parts resting on
Allets on the cell walls so that they are free to expand and contract, their parallelism
being maintained by grooves in which they loosely fit, and the electricity being
conducted by an arm of each plate projecting upwards and laterally, and notched
and tightened by nuts on a conducting bolt.
DL TEAL 1
1000
1