Year: 1885

page_text: the Patentee with the consent of the Comptroller, the printed Speci-
ation will now read as shown below:-
Page 1, line 26, for "14,712" read 4712
34, for "Fig. 4, a metal bed B," read a metal bed B. Fig. 3.
3,
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7, for "are" read is
3,
4,
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4,
4,
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4,
4,
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2, to read is greatly neutralized.
At a suitable distance from the
When utilised for
armature, see Fig. 4 is a stud, on
6, to read suitable box or covering as in Fig. 1.
audible signals a gong or
16, to read receiving and transmitting apparatus
21, to read is broken. By moving, &c.
22, to read you complete the circuit. For, &c.
24, for "A wire" read One wire
40, for "or return" read a return
18, for "automatic" read armature
13, for "vindicates" read indicates
39, read insulated contacts so arranged that &c.
22
6,
"
50, for "distinct" read distant
[Some minor corrections of punctuation have also been made in the
original Specification.]

page_text: Used in Connection therewith.
We HANS PETER FREDERIK JENSEN of 36 Gt James St Bedford Row London
Engineer BROWNE WOLSEY WEBB, 444 Camden Road London Electrician and
JENS JENSEN of 36 Gt James St Bedford Row London W.C. Engineer do hereby
declare the nature of our invention for AN IMPROVED ELECTRICAL SYSTEM FOR
SENDING AND RECEIVING SIGNALS &C. to be as follows:-
31.
The principle of our invention is to enable a person sending a signal or call by
the ordinary means applied for electric bells to receive back a confirmation signal,
for instance if one of our apparatus was fitted in room A and a similar one in
room B by turning the handle of apparatus in room A the apparatus in room B
would keep on ringing or indicating until the handle of apparatus in room B was
turned up thereby electrically replacing the handle on apparatus in room A. In
some cases we use a push knob instead of a handle but the principle is the same
where a larger number of these apparatus are required in one place we preferably
fit them up in one case similar to the ordinary form of electric bell indicator and
generally employ an electric bell in connection with it the single apparatus is
made somewhat in form and appearance of an ordinary push as generally used for
electric bell work, sometimes we employ a hemispherical or any other suitable
shaped bell for covering the work, the signal, in such case is given by ringing the
bell as well as by replacing the handle or knob.
According to one part of our invention we employ a case or box somewhat after
the manner of an ordinary electric bell push made in two pieces a box on which
the work is fastened and a cover of a suitable size to cover the same. A handle
is so arranged that it hangs perpendicularly outside the top of the cover it has a
collet that goes through a hole in the cover and works a staff secured to the base
of the box at a suitable place the collet has a tooth or projection. We preferably
employ a magnet as described in a former patent 14,712. 1882 the said electric
magnet has two polar extensions, our armature we pivot at right angles, on the
inside of the armature we fix a small spring to keep the armature when at rest in

page_text: a raised position away from the pole pieces, the outside of the armature has a
raised projection or tooth at a suitable place the magnet and armature are so
placed in position to the collet of the handle that if you raise the handle from its
perpendicular to a horizontal position the tooth on the collet must pass the tooth
on the armature, in passing the armature is depressed towards the magnet but
regains its position directly the teeth are clear of one another, the shape of the
teeth preventing them from slipping back and can only be released by sending an
electric current thro the magnet which then attracts the armature and releases the
collet, the handle by its own weight regaining the perpendicular position, the
contacts are so placed that either a contiguous contact is made the whole time
the handle remains in a horizontal position or by pressing the handle a little
upward after it has gained its horizontal position and only so long as it is pressed
upwards In a modification of this invention we employ a single bobbin with
a hollow core iron standing upright so as to allow the stud the handle works
on to move freely inside it, the armature is hinged to the top of magnet and has a
projecting piece similar to above described. In another modification we place the
magnet and armature in such position that the end of the armature acts as a tooth
for a similar purpose as already described. In a further modification we employ a
hollow magnet as above described but with the two polar extensions the armature
is hinged parallel with those and has a tail extension that acts as a click, the
magnet is so fixed as to allow room between it and the base plate thro the hollow
core iron is passed a rod that with the aid of a spiral spring acts as a push knob,
the contact is underneath the bobbin and insulated from it contact is made in the
ordinary way of pushing the push knob down against the contact, the armature
has a brass inside spring as formerly described, in pushing the push knob against
the contact the tail click of the armature acts on the rod in such manner as to
prevent it regaining its normal position which can only be done electrically the
same as already described. In a modification we use it in connection with an
alarm clock, fitted to a bed stead or chair in such manner that the weight of the
person closes the circuit when the hand of the alarum arrives at the appointed time,
the circuit is broken by the person getting up.

page_text: Used in Connection therewith.
HANS PETER FREDERIK JENSEN 36 Gt James Str Bedford Row London,
Engineer, BROWNE WOLSEY WEBB 444 Camden Rd London, Electrician JENS JENSEN
36 Gt James Str London Engineer do hereby declare the nature of our invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
One of the great drawbacks in the ordinary system of Bells both Electrical
and others are that ever-occurring and most irritating contingency that most every
person has repeatedly experienced after an annoying waste of time, that one is
unanswered, and are powerless in the matter, as one is not sure in the first instance
whether the bell has sounded or not, or if it rang, whether it has been heard and
that one is about being attended to is merely a matter of surmise, the object of our
present invention is to remedy this defect and with our present improvements
a person ringing or sending a signal if heard can instantly receive back either an
audible or visible signal, or both, so that it is apparent if one is being attended to
or not.
For that purpose we construct an apparatus which we call the J. W. J Switch
the object of which is to combine in one instrument the means of sending receiving
and indicating signals or calls, that is to say, that instead of, as with the ordinary
Electric Bell System, to employ two Bells, 2 contact breakers and 2 annunicators
the same can be effected with two of the J. W. J switches.
And in order that our invention may be more fully understood we now
proceed to describe the same with reference to the accompanying drawings the
same letters of reference indicating corresponding parts in all the corresponding
figures.
Fig. 1 represents a sectional view of a J. W. J switch as a transmitting instrument
and Fig. 2 a front view as a Receiver.
We employ an Electro magnet of the type described in our Royal Letters Patent
4712. 1882. The said Electro-magnet is provided with 2 polar extensions in the
form of checks or discs.
The armature is attached to the one pole of the magnet as in Fig. 3, or is planted
on a separate stud as in Figs. 1 and 2 and moves parallel to the coil, on the inside
of the armature is a brass spring of requisite strength to hold it away from the
magnet when no current is flowing, the outside of the armature is provided with a
projection or tooth. Fig. 4, a metal bed B with two projecting pieces is employed
for retaining the electro magnet and armature in position. By using the split core

page_text: iron (as described in former patent) for the magnet the effect or residual magu
is greatly neutralized at a suitable distance from the armature-Fig. 4 is a stud, on
it works a collet C provided with a wheel W with one or more teeth to engage with
the tooth on the armature and to make and break contact or the collet itself may
be filed flat on one or more sides for that purpose, the apparatus is enclosed in a
suitable box or covering as in Fig. 1 when utilized for audible signals a gong or
dome of any sonorous substance is employed for covering the apparatus see Figs. 5.
6 and 7 Where more than one is required a case is used similar to that generally
employed for Electrical Indicators, as in Fig. 8.
The Collet C projects through the case or covering and terminates in a knob or
handle, the handle or Flag acts as a Semaphore & is sometimes placed outside and
sometimes inside the cover-The contacts for making and breaking the Electric
circuit are arranged as hereinafter described according to the different purposes for
which the J. W. J switch is intended to be used.
The J. W. J switch is designed to be used as an audible and visible signal
receiving transmitting apparatus.
•
In order to make the signal audible the armature is provided with a hammer or
striker (see Figs. 5 and 6) which strikes against the dome that serves as a cover for
the apparatus.
When the handle hangs in a perpendicular position as shown in Fig. 1 the circuit
is broken by moving the handle from a perpendicular to a horizontal position
(shewn in Fig. 2) you complete the circuit for connecting up two apparatus as
shewn in illustrations Figs. 1 and 2. Take one wire from Battery to metal base of
each apparatus. A wire from one apparatus to the other suitably insulated & in
connection with a metal contact spring At a certain distance from this Contact
spring is an insulated stud to which is fastened the outside wire of magnet coil
inside wire of coil is taken to metal base plate, the wheel on handle collet has
3 teeth, the middle one of which is insulated-When the handle is in a perpendicular
position as in Fig. 1 nothing touches the insulated Contact spring and consequently
the circuit is broken on moving the handle upwards-The first pin or tooth or wheel
makes a passing contact with the insulated spring and completes the circuit through
the base plate of the transmitting apparatus and coil wire of receiver causing the
Electro magnet of the latter to attract its armature, thereby releasing the handle
which by its own gravity attains a perpendicular position before the handle of
Figure 1 can obtain a horizontal position."
The second or insulated tooth touches the contact spring and being too long to
pass it, forces it against the insulated stud thereby completing the circuit through
the coil wire of Figure 1.
The third tooth engages with the tooth on the armature and keeps the handle in
its horizontal position ready to receive or return signal.
When more switches are used as an indicator or annunicator, a bell preferably
connected up to a separate battery is brought into action by the handle, which by
falling from a horizontal to a perpendicular position closes the circuit and the bell
will continue to ring until the handle be replaced into its normal position, this
replacement stops the bell ringing and as an indication for the operator at the
other end, the handle on the transmitter will return to its perpendicular position, it
will be readily seen from this how very simple and useful, this system is especially
for hotels and large buildings.
The ringing of a powerful bell is too much even for the most indolent of servants,
and as it cannot be silenced without making it patent to the person ringing at the
other end, in all probability the summons will be attended to and save much
vexation and loss of temper so often attending the uncertainty appertaining to the
ordinary mode of operating bells when one neither knows whether the bell has
rung or not; or if it suits the attendants convenience to attend to it.
In order to use the switch as a circuit tester it is only necessary to let the coil of
the magnet of the operating instrument into the circuit, or the return contact may

page_text: De.80 arranged mar VAD
coming finally to rest.
We will now describe another way of connecting up two of our audible and
visible signal transmitting and receiving apparatus & by the method hereinafter
described Electrical signals or calls can be sent to and fro simultaneously.
Figures 5 and 6 represent two of our apparatus referred to, the zinc wire, from
battery goes to metal support of one and copper wire from battery to the other
apparatus one wire from the magnet coil to contact Breaker and the other wire to
an insulated metal spring of corresponding instruments, the wheel on the handle
collet has two teeth.
When the handle is in a horizontal position as in Figure 6 the one tooth of
which is engaged with tooth on armature and the other is in close proximity but
not touching the insulated metal spring, by lifting the handle of Figure 6 a little
upwards the tooth makes contact with the spring and completes the circuit for
corresponding apparatus Figure 5 in the following manner.
The current flows from Battery to Metal support of Apparatus, Figure 6 through
wheel to insulated metal spring and coil wires of apparatus figure 5 through
contact breaker and automatic back to Battery.
In our former patent we describe a combination Contact maker and Bell, and in
order to increase the usefulness of the said invention and the better to adopt it for
the purpose herein before described we combine with it a base plate or disc on
which we fix the bridge or support that carries the bell dome and movement-by
movement we mean the electro magnet armature and accessories, by using the base
plate we obtain greater protection for the movement and it lends itself better for
decorative designs, a matter of consideration for our present purpose the intention
being for it to take the place of the ordinary Bell pull or push as at present
employed.
Figures 9 and 10 represent our improved combination Contact maker and Bell.
The base plate also serves as a support for the terminal to which a wire from
corresponding apparatus is secured the said terminal is also utilized as part of the
arrangement for making and breaking the circuit.
We also employ an improved and simple form of push Figure 11, it consists in a
nut or screw for securing the dome that covers the movement in its position,
through a hole in the nut is a rod with a button on one end the reverse end being
flattened sufficient to prevent the rod falling out.
In order to utilize the various J. W. J. switches and combination push Bells as
bereinbefore described as Table and Invalid Bells as well as Fire, Burglar and other
alarms, We provide the base plate with two terminals A pear push and flexible
wire will enable a person to operate the indicator or corresponding apparatus and
receive back a confirmation signal a matter of great convenience to Invalids
And in a similar simple and effective manner at a very small cost a Burglar
aların can be attached at night to windows or doors.
For the purpose of Fire alarm we embody in the Base of our apparatus a
mercury thermometer, or the contact springs may be made to act for the same
purpose. We prefer the mercury thermometer as it is available for ordinary use
as well as a Fire Alarm the arrangement for other alarm purposes will be described
hereinafter.
In a modification we make our apparatus with hollow core iron, placed in an
upright position to allow the Collet of the handle to work inside it, the top pole is
round and the armature is similarly shaped with a hole in the centre for allowing
the stem of the handle to move freely inside the core iron the bottom pole of the
magnet is carried up to a height in a line with the top pole piece and to this the
armature is fixed with two pins in such manner that the armature can move
freely to and fro from the top pole to the magnet, the armature has a projection
on the outside and a spring on the inside and the action is similar as before
described.

page_text: In another modification we employ fitted on a bridge the electro magnet, with
a hollow core iron and two polar extensions the armature is hinged parallel to
these & has a tail extension that acts as a click.
A rod with the aid of a spiral spring or other suitable means acts a Contact
maker or breaker and has a projection or tooth to engage with the tail of the
armature, a spring keeps the armature away from the magnet when the Circuit is
open, contact is made below the bridge by depressing the rod and thereby closing
the circuit in a corresponding apparatus the spiral spring of its own accord would
raise the push rod to its normal position but the armature tail or click prevents it
from doing so, by closing the circuit at the other end of the line the current
passes through the magnet coil of the first instrument attracts the armature
thereby liberating the push rod which instantly regains its normal position and
by so doing plainly vindicates that a call has been made or answered.
Sometimes we employ the electro magnet and armature as described but fix the
click or stop on the reverse end of the armature as in Figure 12 a bevelled disc on
the push rod engages with the Click on Armature and acts in a similar manner as
already described and the same arrangement may be used with a semaphore instead
of a push.
In Figure 8 we show an indicator consisting of a number of our switches in
combination with the said indicator, we sometimes use a clock or timepiece, or the
same can be employed separately, the said Clock serves as an alarm or call clock
& is so arranged that a call can be automatically made at any hour wished through
the medium of our Combination bell switches. The Clock may be of any suitable
design but we prefer using the one described in our former patents for the purpose
of automatically making signals several times during the 24 hours we fix in the
centre of the plate under the dial two metal rings insulated from the plate the
outside ring has any desired number of small plantinum springs fitted on to it,
the inner ring has a corresponding number of holes, similar holes are also provided
in the dial, to the hour wheel is fixed an insulated rod.sufficiently long to touch
the platinium springs, each ring is separately enclosed in the electric circuit, the
hour wheel rod touches the platinium spring each time, but the circuit is only
completed when a pin is inserted through the dial in the inner circle by the
platinum spring being pushed against it. For automatically making or breaking
the circuit we fit the metal rings close together and place a small roller or wheel in
the hour wheel rod, part of the rings are cut away When the wheel touches both
rings the circuit is open, when it touches but one the circuit is closed.
For the purpose of calling servants or others in the morning we combine with
our alarm clock a Circuit breaker attachable to a bedsteal, a spiral spring with
insulated contacts so that the weight of a person closes the electric circuit at this
end, but as the circuit is also broken at the clock the bell will not ring until the
time at which the alarm hand is set when the circuit will be closed and the bell
will continue to ring until the person gets up, the advantages of this will be clear
to any one, the alarm requires no resetting, a person cannot go back to bed again,
as the contacts may be arranged for any length of time & the bell would therefore
continue to ring should the person return to bed.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is as follows:-
1. The combination with an Electro magnet and armature of a contact maker
for the purpose of closing and breaking the circuit of a distinct Apparatus
substantially as set forth drawn and described.
2. The combination with an Electro magnet Armature and Contact maker of a
handle flag or semaphore push or pull rod for the purpose of annunicating a signal
from a distant Apparatus substantially as set forth drawn and described.

page_text: 3. The combination with above of a Gong or dome for covering the same and bell
hammer substantially and for the purpose set forth and described with reference to
Drawings.
4. The combination with an Electro magnet of an Armature of the peculiar
shape and device for the purpose set forth drawn and described.
5. The peculiar arrangement and device to enable the same apparatus to
transmit and receive audible and visible signals substantially as set forth drawn
and described.
6. The combination with our apparatus for enabling the said apparatus to
be used as an Invalid Fire and General Alarm substantially is set forth and
described.
Dated this 11th day of February 1886.
HANS PETER FREDERIK JENSEN,
BROWNE WOLSEY WEBB.
JENS JENSEN.