A Combined Ammeter and Voltmeter.
Year: 1893

page_text: Date of Application, 20th Feb., 1893
Complete Specification Left, 19th June, 1893-Accepted, 3rd Feb., 1894
.PROVISIONAL SPECIFICATION.
A Combined Ammeter and Voltmeter.
WILLIAM RICHARD MORRIS 293 Wheeler Street Birmingham Electrician do
hereby declare the nature of this invention to be as follows:-
An instrument by which the electromotive force and the current of electricity
can be measured or indicated at the same time and upon the same dial, I construct
a case of metal or other suitable material and fit therein 2 solenoids or any other
arrangement for producing the same result viz. moving 2 hands or pointers,
1 solenoid I use for indicating the electromotive force in volts and this solenoid
moves the hand which has the word volts marked on it, the other solenoid, I use
for indicating the current in amperes and this hand has the word amps. marked on
it; the solenoides are connected to terminals on the case. I also claim the use of cut
outs or fuses on the case.
Dated this 18th day of February 1893.
WILLIAM RICHARD MORRIS.
COMPLETE SPECIFICATION.
A Combined Ammeter and Voltmeter.
I, WILLIAM RICHARD MORRIS of 293 Wheeler Street Birmingham in the
County of Warwick, Electrician 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 :-
My invention relates to an instrument for indicating the current of electricity in
amperes, and the electromotive force in volts, at the same time, in, or on, one
instrument.
The invention has mainly for its object the moving of two hands or pointers one
hand indicates the current in ampers, and the other indicates the electromotive
force in volts, these hands are pivoted in a suitable manner at A and B, shown in
drawing, and may be moved by solonoids, or any other means or arrangement for
producing the same result, viz. moving one hand from right to left and the other
from left to right across the double scale shown in the drawing Fig. 1 which is a
front view.
Fig. is a back view C D are small pieces of iron suspended from the arms
attached to the spindles pivoted at A & B (and which carry the hands) E and F
are solonoides (and are connected to the terminals marked G H and I J) one of
which is used to move the hand with the word volts on this is connected with the
two terminals marked G H the other solonoide is used to move the other hand
with the word amps. and this connected to the two terminals marked I J.
Fig. 3 is a side view K is the hand or pointer L is the dial plate.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
First. A combination of an ammeter and voltmeter in one instrument which can
be used to indicate amperes or volts seperately, or both, at the same time.
1 T
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page_text: Third. The marking of these two hands with the words, amperes on one,
volts on the other (as shown in Fig. 1) or other words meaning the same.
Dated the 17th day of June 1893.
and
WILLIAM RICHARD MORRIS,
293, Wheeler Street, Birmingham.