Improvements in Electric Current Regulators.
Year: 1895

page_text: Date of Application, 24th Jan., 1895
Complete Specification Left, 23rd Oct., 1895-Accepted, 24th Jan.,
1896
PROVISIONAL SPECIFICATION.
Improvements in Electric Current Regulators.
We, HERMANN NIEWERTH, Electrician, and REGINA NIEWERTH, no occu-
pation, both of Spener Strasse, Berlin, Prussia, do hereby declare the nature of
this invention to be as follows:-
This invention has for its object, to enable a small but predetermined amount of
current to be taken from a circuit connected with a source of a much greater current
and in such a manner, that the desired small current may not be materially
exceeded. Moreover the invention is to obviate the loss of tension occurring with
the resistance hitherto used, as well as the loss in the current. The apparatus is,
glass
in addition, cheap, simple, and easily applied. The apparatus consists of a
Between the two terminals
vessel, in which are provided the two terminal screws.
a metallic conductor is fixed and the apparatus is filled with water.
Suppose that nine ampères of current are to be taken from a circuit, the current
therein being of any suitable magnitude, and say of 110 volts tension, then the
metallic conductor will be about 2 mm in diameter, and about 30 to 40 mm in length.
The current being admitted of only nine ampères and about 105 volts, will pass
through.
The water surrounding the metallic conductor has for its principal object to take
up and conduct away the heat produced in the conductor. The apparatus may be
inserted into one, or into two lines.
It is evident that the form and arrangement of the apparatus may be varied, and
some other suitable substance may be used instead of water.
1
T1805
FREDERIC PRINCE,
Agent for Applicants.
Improvements in Electric Current Regulators.
HERMANN NIEWERTH, Electrician, and REGINA NIEWERTH, no occupation,
both of Spener Strasse, Berlin, Prussia, 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:—
The object of this invention is to enable a small but predetermined amount of
current to be taken from a circuit connected with a source of greater current and in
such a manner, that the desired small current may not be materially exceeded.
Moreover, the invention is to obviate the loss of tension occurring with the
The apparatus is in
resistances hitherto used, as well as the loss in current.
addition cheap, simple, and easily applied.
To enable the invention to be properly understood we will proceed to describe
the same with aid of the accompanying drawings.
Figure 1 sectional side elevation, and Figure 2 plan.
The apparatus consists of a glass vessel a attached to which are two terminal
screws, b, c. Between the two terminals a metallic conductor A, is fixed, and the
annaratus is filled with water.

page_text: Suppose that nine amperes of current are to be taken from a circuit, the current
therein being of any suitable magnitude, and say of 110 volts tension, then
the metallic conductor A, will be of a diameter to only pass such a quantity, say
about 2 in diameter, and about 30 to 40 /m in length. The current being
admitted at 6 only 9 amperes and about 105 volts will pass through.
The water surrounding the metallic conductor A, has for its principal object, to
take up and conduct away the heat produced in the conductor. The apparatus
may be inserted into one or two lines.
It is evident that the form and arrangement of the apparatus may be varied,
and some other substance may be used instead of water to keep the wire cool.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:
"An apparatus for taking a small quantity of current from a circuit of greater
magnitude, consisting of a conductor of small diameter and of short length in
comparison with the line or circuit; this conductor being surrounded by water or
some other suitable substance."
Dated this 22nd dan
FREDERIC PRINCE,
37 Cursitor Street, London, E.C., Agent for Applicants.