IMPROVEMENTS IN ELECTRIC BELL PUSHES, CONTACT MAKERS OR INDICATORS
Year: 1884

page_text: WILLIAM ADOLPH LEIPNER Electrical Engineer 47 Hampton Park Clifton Bristol
and CHARLES' BROTHERHOOD, Everton Villa Chertsey Rd, Clifton, Bristol (Engineer)
we do hereby declare the nature of our said invention for the IMPROVEMENTS IN
ELECTRIC BELL PUSHES, CONTACT MAKERS OR INDICATORS, to be as follows:-
Whereby it is possible to tell if a bell at a distance, or any number of bells are
ringing in the same circuit as that in which our improved push and indicator is
inserted. The improved combined push and indicator consists of an Electro magnet
in front of one of the poles of which an armature of soft iron or any armature
capable of being attracted by a magnet is mounted on a spring free to vibrate and
which armature and spring are capable of being adjusted by a screw.
On the
armature is hinged or fixed rigidly a needle or pricker or blunted pointed piece of
metal either round or of any other section. This needle or bar fixed to the armature
passes through the knob of the push. When the knob is pushed in it completes the
circuit just the same as any push does.
The action is as follows.
When the knob is pushed the circuit is completed
therefore if the bell is in proper working order it will ring and through ringing
it causes the current, as is well known to be rapidly broken and made.
This interrupted current in passing round the Coil of the Electro magnet will
maguetize it every time the bell contact is made. It will be seen that there then
must necessarily be a vibration of the adjusted armature and needle.
This is felt on the finger of the operator as a succession of small blows or prickings
thus indicating to him that the bell is ringing. Should there be any short circuit
or bad connections the bell failing to operate no vibrations can be given on the
armature and needle showing to the operator by their absence the presence of a
short circuit and demonstating fact of bell not ringing.
Dated this 30th day of June 1884
WILLIAM ADOLPH LEIPNER.
CHARLES BROTHERHOOD.

page_text: We WILLIAM ADOLPH LEIPNER 47 Hampton Park Clifton Bristol Electric
Engineer, and CHARLES BROTHERHOOD (Engineer) of Everton Villa, Chertsey Rd,
Clifton, Bristol do hereby declare the nature of our said invention for IMPROVE-
MENTS IN ELECTRIC BELL PUSHES, CONTACT MAKERS OR INDICATORS and in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement
T!
The combined push and Indicator consists of an Electro Magnet in front of one
of the poles of which or poles of which an armature of soft iron or any armature
capable of being attracted by a magnet or pair of Electro Magnets is mounted on a
spring free to vibrate and, which armature and spring are capable of being adjusted
by a screw.
On the armature is hinged or fixed rigidly a needle or pricker or blunted piece of
metal either of round or other section. This needle on armature passes through the
knob of the push. One end of the coil of wire of the Electro Magnet is made one of
the terminals (t) (see Figs 1 & 2). The other end passes to a spring s. The other
terminal is t¹.
When the knob is pushed 8 is brought into contact with c so that a complete
circuit is made from t to t¹;
'
The needle or pricker n, mounted on the armature A is regulated to such a length
that when the knob is pushed in it projects somewhat through a small hole made in
the knob p: The whole is mounted in a small framework. The circuit of the bell
and battery comes to two terminals t and t! The action is as follows. When P is
pushed the circuit is completed therefore if the bell is in proper working order, it
will ring and through ringing it causes the current as is well known, to be rapidly
broken and made. This interrupted current in passing round the Coil or coils of the
Electro Magnet will magnetize it every time the Electric bell contact is made.
It will be seen, that there then must be necessarily a vibration of the adjusted
armature and needle.
This is felt on the finger or part of the body applied, of the operator as a
succession of small blows or prickings thus indicating to him that the bell is
ringing. Should there be any short circuit or bad connection the bell failing to
operate no vibration can be given to the Armature and needle showing to the
operator by their absence the presence of a short circuit, and demonstrating the fact
of the bell not ringing.
Another method is the use of an armature of soft iron round which insulated
copper wire or any wire is wound in a manner to produce magnetism. The
armature is mounted on a spring and has attached to it a needle. In front of one
of the poles is fixed a piece of soft iron or a permanent magnet. When a permanent
magnet is used the connections of the armature must be so arranged as to give
opposite polarity to that of the permanent magnet. It will be seen that vibrations
will be gained same as in the first case. Interrupted currents passing round the coil
of the armature the latter will be attracted every time the bell contact is made and
repelled again by the spring.
Another form is also shown in Fig 4 where we use an Electro Magnet in front of
the pole of which or poles of which as the case may be, an Armature A consisting of
a thin strip of iron or steel is caused to vibrate. The needle can be fixed on the
centre or any point of A. The connections are easily made in a similar manner to
that shown in the other figures or as shown on Fig 4.

page_text: Although the needle passing through a knob is preferred a section of the knob
itself may be made to vibrate by means similar to those described in the foregoing
part of this Specification.
Having now particularly described and ascertained the nature of our said
invention and in what manner the said is to be performed we declare that what
we claim is
1. The method of indicating the currents in an Electric bell circuit by the
operation on the senso of touch of a piece passed through the push button and
actuated by an Electro Magnet in the circuit and an opposing spring.
2. The combination with an Electric bell push of a vibrating armature sub-
stantially as set forth, and for the purpose described.
3. The combination with an Electric bell push, of a pin or pricker substantially
as described.
4. The apparatus substantially as depicted in Figs 1 2 & 4 of the Specification.