Year: 1899

page_text: Date of Application, 16th Dec., 1899
Complete Specification Left, 16th Oct., 1900-Accepted, 17th Nov., 1900
Frocess Ior the Froduction of REPELIPE DA
I, BARUCH JONAS, of II, Emdenerstrasse, Berlin, in the Empire of Germany,
Student of Electricity, do hereby declare the nature of this invention to be
as follows:-
This invention relates to a process for the production of thermo-electris
batteries the essential feature of which is that the said thermo-electric battery
is produced by galvanism.
In carrying my invention into practice I provide a cylindrical body of insulat-
ing material on the outer surface of which I provide spiral grooves or threads
to a suitable depth. These threads are filled with metal by a galvanic process.
First one longitudinal half is made a metallic conductor and steeped in a bath
when a deposit of one metal is formed in the spiral like grooves or threads.
The other longitudinal half is then treated in a suitable manner so that the
grooves on this half are provided with another metal and these two metals
exercise a thermo-electric effect when their contact parts are heated.
Several of the batteries obtained in this way are arranged in an hollow
insulating core parrellel to each other and equal distances apart.
The outer surface of this hollow cylinder containing the several thermo-electric
batteries is cooled and the inner surface heated in any convenient manner.
In order that the different metals of the battery may adhere properly together
at the joints of contact I proceed as follows:
After the first layer has been deposited over the insulating body in the manner
before described one of the surfaces is covered with wax and the body again
steeped in the galvanic bath, so that a second layer of metal is deposited on that
surface which is free from wax. When this metal layer has assumed a sufficient
thickness, the first half which had only a single thickness of metal deposited
upon it, is freed from its wax coating, and the other half (which had been doubly
coated with metal as before described) is then in its turn coated with wax,
whereupon the insulating body is again steeped in the galvanic bath and a layer
of metal, corresponding with that of the second layer already produced on the
other half of the body, is then deposited on the unprotected half of the said body.
In this manner several layers of metal are alternately produced, the contact
edges of which engage closely with one another, so that, a perfect transmission
of current is produced.

page_text: Process for the Production of Thermo-electric Batteries.
I, BARUCH JONAS, of 11, Emdenerstrasse, Berlin, in the Empire of Germany,
Student of Electricity, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:-
This invention relates to a process for the production of thermo-electric bat-
teries, the essential feature of which process is that the thermo-electric battery
is produced by means of galvanism, an insulating body furnished with screw-
threads being covered on its one half, in the said screw-threads, with a metal
by means of galvanism, whilst the other side of such body is also similarly
covered or coated with metal, which, in conjunction with the metal on the first
half of the body, exercises a thermo-electric effect when the contact parts
are heated.
In the accompanying drawings,
Fig. 1 is in elevational view of a portion of an insulating body provided with
the threaded courses aforesaid, both sides of which body are filled in with
metal by galvanic process.
Fig. 2 is a transverse section of a modified form thereof.
Fig. 3 is an elevational view shewing the arrangement of the thermo-electric
battery in accordance with my invention.
Fig. 4 is a transverse section thereof on line X-X and
Fig. 5 a section on line y-y while
Figs. 6, 7, 8, 9 10 and 11 illustrate the manner in which the layers of
metal are arranged upon the insulating bodies.
Referring to the drawings, a (Fig. 1) is the insulating body, made of porcelain
or similar material and furnished with a spiral like channel b, which is filled
in or coated with metal e by means of a galvanic process. One half of the body
is formed into a metalic conductor by steeping the said half into a galvanic bath
in order that the spiral like channel may be covered or coated with metal,
the other half of the said body being subsequently treated in a similar manner.
The thermo-electric batteries produced in this manner are inserted into a
core d, as shewn particularly by Fig. 4, the inner surface of which can be
heated and the outer surface thereof cooled.
In order that the different metals of the battery may adhere well to the contact
parts, I proceed as follows:-
After the first layer of metal e has been deposited on the insulating body in
the galvanic bath, the metal covered half e aforesaid is coated with wax and
the body again steeped in the bath, so that a layer of metal e¹ is deposited on the
other half of the body.
After the first metal coating has been made sufficiently thick, the first half e
is freed from wax and the half e¹ then coated with the wax whereupon the
insulating body is again steeped in the galvanic bath. A second layer of metal ca
is thus produced upon the first half of the body, over the layer e, the process being
repeated until a sufficient number of layers of metal are deposited upon the
insulating body.
In this manner several layers are alternately produced the opposing ends of
which are in contact, whereby a good transverse of current is ensured.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
The process for producing thermo-electric batteries, the distinguishing feature

page_text: of which consists in a porcelain or other body having a spiral channel or screw-
thread, on which body metal is galvanically deposited a layer being deposited
first on one longitudinal half of the spiral channel and a similar layer deposited
on the other half thereof, any suitable number of layers being deposited and the
contact edges so arranged as to overlap or simply abut against one another,
which layers, together form a good thermo electric connection when the contact
parts are heated, substantially as specified and illustrated.
Dated this 16th day of October 1900.
HUGHES & YOUNG,
55 & 56, Chancery Lane, London, W.C., Agents.