IMPROVE- MENTS IN GALVANIC CHAINS
Year: 1882

page_text: LETTERS PATENT to Charles Denton Abel, of No 28, Southampton Buildings,
Chancery Lane, in the County of Middlesex, for an invention of IMPROVE-
MENTS IN GALVANIC CHAINS." A communication from abroad by August
Leberecht Albert Kraehmer, of Dresden, in the German Empire.
PROVISIONAL SPECIFICATION left by the said Charles Denton Abel at the
Office of the Commissioners of Patents on the 3rd March 1882.
CHARLES DENTON ABEL of No 28 Southampton Buildings Chancery Lane in
the County of Middlesex " IMPROVEMENTS IN GALVANIC CHAINS." [A com-
munication from abroad by August Leberecht Albert Kraehmer, of Dresden, in the
German Empire.]
According to the present invention galvanic chains are constructed as follows:-
A zinc plate and a copper plate are secured on opposite sides of a piece of cloth or
felt of corresponding shape, the metal plates having for this purpose a series of
holes through which and through the cloth or felt are passed silk cords or threads
so as to secure the three parts together, forming thus a link of the chain. The
zinc plate has projecting at one end a loop, and the copper plate has projecting
from the other end a hook, or vice versa, and the several links being placed so that
the copper plates alternate on each side with the zinc plates, the zinc plate of the
one link is connected by its loop to the hook of the copper plate of the contiguous
link on the one side, while the copper plate of the said link is connected to the
zinc plate of the contiguous link on the other side, the connections thus forming
hinge like joints enabling the chain to fit in any desired position. To the end links
of the chain are by preference attached single zinc and copper plates, respectively
serving as electrodes for making contact with the part of the body to which the
chain is applied. The copper plates are by preference gilt to prevent oxidation.
When in use the cloth or felt is impregnated with suitable liquid for maintaining
an active galvanic current.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Denton Abel in the Great Seal Patent Office on the
31st August 1882.
"
"
CHARLES DENTON ABEL of No 28 Southampton Buildings Chancery Lane in the
County of Middlesex IMPROVEMENTS IN GALVANIC CHAINS A communication
from abroad by August Leberecht Albert Kraehmer of Dresden in the German
Empire.
According to the present invention galvanic chains are constructed as follows:-
A zinc plate and a copper plate are secured on opposite sides of a piece of cloth or
felt of corresponding shape, the metal plates having for this purpose a series of
holes through which and through the cloth or felt ore passed silk cords or threads
so as to secure the three parts together, forming thus a link of the chain. The
zinc plate has projecting at one end a loop, and the copper plate has projecting
from the other end a hook, or vice versd, and the several links being placed so that
the copper plates alternate on each side with the zinc plates, the zinc plate of the
one link is connected by its loop to the hook of the copper plate of the contiguous
link on the one side while the copper plate of the said link is connected to the zinc
plate of the contiguous link on the other side, the connections thus forming hinge
like joints enabling the chain to fit in any desired position. To the end links of
the chain are by preference attached single zinc and copper plates, respectively
serving as electrodes for making contact with the part of the body to which the
chain is applied. The copper plates are by preference gilt to prevent oxidation.
When in use the cloth or felt is impregnated with suitable liquid for maintaining
an active galvanic current.
Fig. 1 of the accompanying drawings shews a plan and Fig. 2 a side view of the
two end portions of a chain according to this invention, it being understood that
there may be any intervening length between those portions. Fig. 3 is a plan and
Fig. 4 a longitudinal section of a pair of the links drawn to an enlarged scale. In
each link A is the zinc and B the copper plate (which is preferably gilt) secured by
silk threads a stitched through holes in the plates and through the fabric C which
is interposed between them. One of the plates in each link, as A, is made with a
hook and the other, as B, with a slot in which the hook of the A plate of the
next link in order engages as shewn. It will be seen that if the zinc plate A is
on the upper side of the one link it is on the underside of the next link and so on
alternately.
Having thus described the nature of the said Invention, and in what manner
the same is to be performed as communicated to me by my foreign correspondent
I claim -
The construction of galvanic chain by the jointing together of links each of
which consists of a plate of zinc and of a plate of copper (preferably gilt) stitched
by a silken thread on alternately opposite sides of interposed fabric, substantially
as herein described.
In witness whereof I the said Charles Denton Abel have hereunto set my
hand and seal this thirty first day of August in the year of our Lord One
thousand eight hundred and eighty two.
CHA³. D. ABEL. (L.S.)