IMPROVED CONSTRUCTIONS OF METAL PLATES, POSITIVE AND NEGATIVE, AND IN METHODS OF ATTACHING OR CONNECTING PLATES OR ELEMENTS TO FORM CHAINS OR BATTERIES FOR MEDICO-ELECTRIC AND OTHER PURPOSES, ALSO IN APPLIANCES CONNECTED THEREWITH FOR THE APPLICATION OF ELECTRIC CURRENTS
Year: 1873

page_text: PROVISIONAL SPECIFCIATION left by Isac Louis Pulvermacher at the
Office of the Commissioners of Patents, with his Petition, on the
31st May 1873.
I, ISAC LOUIS PULVERMACHER, of 194, Regent Street, in the County
of Middlesex, Electrical Engineer, do hereby declare the nature of the
said Invention for "IMPROVED CONSTRUCTIONS OF METAL PLATES, POSITIVE AND
NEGATIVE, AND IN METHODS OF ATTACHING OR CONNECTING PLATES OR ELEMENTS TO
FORM CHAINS OR BATTERIES FOR MEDICO-ELECTRIC AND OTHER PURPOSES, ALSO IN
APPLIANCES CONNECTED THEREWITH FOR THE APPLICATION OF ELECTRIC CURRENTS,"
to be as follows:-
This Invention relates-
Firstly. To the construction of plates, positive and negative, which are
to be rolled up for forming clements or batteries for medico-electric
purposes.
According to one construction of the exterior plates, say of negative
or negatively coated metals, I form two wings or flaps, one being larger
than the other, and with projecting portions forming hooks or tongues
between them, but at the edges the two wings are rolled or bent in

page_text: opposite directions, or in the same direction in flat or other shaped coils,
with spaces between them for the reception of rolled or coiled plates of
the opposite metal, say zinc, which can be pushed down into position,
and be there retained in any suitable manner, the zinc being furnished
with thread or a fibrous body to preserve insulation, and to serve as a
medium for retaining exciting liquid therein.
According to another construction I cut out a portion from between
the two wings, and form the hooks at each end double, so that they are
folded one piece upon the other to form single hooks of doubled
strength, the two wings being rolled or bent into coils as in the former
case for the reception of the zincs. The zincs or other positive metals
for the above makes of coppers I form from sheet and wire zinc, the two
being connected at the bottom to hold them at the respective distances
apart, and for easy insertion.
According to another construction I only roll or bend one of the
wings into a coil, the other being left flat, or nearly so, in order that the
zinc, which is bent or shaped to suit may find a lodgment, and be held
within the folds or partly within and partly without. By this means I
can use my elements in a dry state, to be excited only by the perspiration
thrown off from the body of the wearer, as a single liquid element by an
exciting liquid, or as a constant element by fitting sponge, felt, or a core
of chemical compound, such as is described in my previous Patent
No. 2062 of 1869, dated 8th July.
The elements can be arranged to form a chain of any length to be
applied to any part of the body, and the exterior on one side only may
be perforated, gilded, embossed, or otherwise ornamented to form say an
electric bracelet with a gold exterior.
If the zincs are in strips I first cover the strip with spiral thread
saturated with gum or other soluble adhesive to fix the thread on in
spirals, so that when the separate plates or pieces are severed, the thread
remains upon them. The plates can then be bent into shape, and
immersed into water to dissolve the adhesive substance, the plates are
afterwards dried, and the thread is in a state to absorb exciting liquid
for the future.
The zinc or positive metal can be perforated and sewn to a backing of
fibrous body before it is cut up into plates, and previous to the bending
or rolling operation.

page_text: The next part of the Invention relates to methods of attaching or
connecting the elements to form a chain, and consist in forming a lip
by bending the tip of one of the hooks at right angles to its body, and
in forming a slot or recess in the edge (single or double) of the zinc of
the neighbouring element through which the bent tip must be passed
before the hook can have access to the interior of the zinc previously
bent to form the voltaic connection between the elements, so that the
bent tip can never come so low as to allow a disconnection to take
place while the chain is in wear, or while being folded or rolled up for
any purpose.
The next part of my Invention consists of a pronged or two armed
apparatus, between which prongs is an insulated block or stem carrying
a pair of pinions with teeth upon them, the teeth being upon a portion
only of the periphery of each to gear with two toothed bars upon the
prongs in alternate order, and produce a continuous or nearly continuous
rotation in one direction of a star or interrupting wheel, the teeth or pins
upon which are in succession struck or borne upon by a spring pallet for
making and breaking an electric current. The two prongs are arranged
at the bend to the block so that their ends can be pressed towards each
other, and then to spring back again so that their bars produce the
movement of the pinions.
The last part of my Invention consists of an electric brush or rubber
composed of an insulated fabric, into or through which wires or pins are
inserted like a "card." This "card" is secured to the edges of two
plates, which are curved in opposite directions to form a hollow between
them for the insertion of one of the chains before alluded to for
establishing electric currents within the brush, when the battery is
exited. The bush may however be provided with a handle in which
the battery may be placed, and connection made therewith.
"
The "card or brush wires are so arranged that when the brush is
being used as a brush or as a rubber, the wires by the pressure receive
the electricity from the plate with which their backs are in contact,
whereby the current derived from the battery is diffused.