An Improvement relating to Medico-electric Batteries.
Year: 1891

page_text: Date of Application, 13th Apr., 1891
Complete Specification Lelt, 13th Jan., 1892-Accepted, 13th Feb., 1892
PROVISIONAL SPECIFICATION.
An Improvement relating to Medico-electric Batteries.
I NOAH MITCHELL of 194 Regent Street, County of London, Engineer do
hereby declare the nature of my said invention to be as follows:-
This invention has for object to improve the insulating properties of galvanic
chains and the like and also to improve the capillary action and cause a retention
of the exciting liquid in the elements whereby superior results can be obtained both
in the strength and the direction of the current.
In batteries used for medical purposes a filament or thread is sewn or otherwise
secured to one of the metals as an insulator and as a feeder of exciting liquid.
These threads in practice tend to drain themselves and reduce the exciting action
of the liquid upon the element so that in a short time the chain has to be redipped.
Now by my invention I obviate these inconveniences by making short tubes of
gutta percha, india rubber or other equivalent insulating material and insert them
at the upper and lower parts of the element between the metal thereof as distancing
pieces, as insulators and to serve in conjunction with the open work of the outer
metal as a retainer of the exciting liquid for a longer period than that possible by
the threads now employed.
Dated this 12th day of Annil 1001
H. GARDNER,
166, Fleet Street, London,
Agent for the said N. Mitchell.
COMPLETE SPECIFICATION.
An Improvement relating to Medico-electric Batteries.
I, NOAH MITCHELL, of 194 Regent Street, County of London, 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 :-
This invention has for object, to improve the insulating properties of galvanic
chains and the like, and also to improve the capillary action and cause a retention
of the exciting liquid in the elements, whereby superior results can be obtained both
in the strength and the duration of the current.
In batteries, used for medical purposes, a filament or thread is sewn or otherwise
secured to one of the metals as an insulator and as a feeder of exciting liquid.
These threads in practice tend to drain themselves and reduce the exciting action
of the liquid upon the element, so that in a short time the chain has to be re-dipped.
Now by my invention, I obviate these inconveniences by making short tubes A, A,
as shown in the annexed diagram, of gutta percha, india rubber, celluloid, or other
equivalent insulating material and insert them at the upper and lower parts of the
element between the metals B, B, thereof as distancing pieces, as insulators, and to
serve in conjunction with the openwork of the outer metal as a retainer of the
exciting liquid for a longer period than that possible by the threads now employed.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed declare that what I
claim is
In the manufacture of medico electric bands or chains the employment of end

page_text: collars or rings of an insulating material encircling the elements and as distancing
rings thereto, as described.
TL 19
1000
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Noah Mitchell.