Year: 1887

page_text: Date of Application, 12th Mar., 1887
Complete Left, 12th Dec., 1887
Complete Accepted, 13th Jan., 1888
A communication to me from abroad by DAVID KUNHARDT, Engineer, of Aachen, in
the Empire of Germany.
1, EDMUND EDWARDS, of the firm of Edwards and Co., Patent. Agents and Engineers,
of 35, Southampton Buildings, Chancery Lane, in the County of Middlesex, do hereby
declare the nature of this invention to be as follows:-
This invention relates to further improvements in telegraphic apparatus of the kind
for which I applied for Letters Patent dated January 7th, 1887, and numbered 266,
(being a communication to me from abroad by David Kunhardt, of Aachen, in the
Empire of Germany, Engineer).
In the apparatus which formed the subject of the said former invention were
described upright cones with vertical projections representing alphabets arranged on
their circumference in two series, from a to n and from o io :.
The improvements which form the subject of the present invention have for their
object a more ready and convenient operation of the keys by hand, as also a greater
facility to the operator for observing the revolving alphabets, thus requiring a less
intense attention on his part.
The upright cones described in the provisional specification of the said former
invention are replaced according to the present invention by a revolving cylinder
arranged horizontally. The projections forming the alphabet are also arranged in a
horizontal range upon the circumference of the said cylinder.
The keys are arranged above the said cylinder at right angles and inclined to the
axis of the cylinder.
The knobs of some of the keys are arranged out of line with those of the remainder
in order to allow the keys to be placed nearer to each other.
In order to give the knobs which are so arranged out of line a more convenient
position towards the operator, it is preferable to arrange them in a slightly higher
position than the remainder.
In plan the former set of knobs would parily cover the latter set, but the division
of the knobs in two series out of line allows sufficient space for the arrangement to be

page_text: easily worked. The keys in each series are of equal length. The type plates are
essentially the same as described in the former invention.
The disc for distributing the currents by means of seven metal plaies for each
alphabet as described in the former invention, is arranged at the left hand of the
cylinder.
The working cylinders are mounted directly upon the revolving driving shaft,
whereby all the gearing is avoided which was necessary for driving the cones of the
original form of the invention.
The type plate, as it arrives below the key which has been pressed down to make
contact, disengages the catch of the key in the method described in the former
provisional specification. The disc carries a cam which passes below a spring lever
carrying at its upper end a hammer which, as soon as the cam has passed below the
lever swings against and sounds a bell.
The said bell accordingly gives to the operator a signal as soon as the alphabet used
last has passed by, thus reminding him to push down the knob for the following type.
Of course the signal is given only after the passage of the last type plates which
transmit the commutated current.
It will be necessary that each operator should have a bell of the described kind
connected to his working cylinder in order to be duly called whenever a new alphabet
requires his attention. By the use of such signal-bell the attention of the eye is not
so much required, while without it the eye requires to be intensely bent upon the
revolving alphabeis.
In order to avoid the disturbing noise of the frequently repeated bell-sounds, it will
be convenient to apply to the bell a piece of soft felt acting as a damper.
And it will further be expedient to use bells of a different sound for each of the
cylinders, in order that each of the operators may easily catch the sound of his
particular bell.
Dated this 12th day of March 1887

page_text: A communication to me from abroad by DAVID KUNHARDT, Engineer, of Aachen, in
the Empire of Germany.
I EDMUND EDWARDS, of the firm of Edwards and Co., Patent Agents and Engineers,
of 35, Southampton Buildings, Chancery Lane, in the County of Middlesex do hereby
declare the nature of this invention and in what mumer the same is to be performed,
to be particularly described and ascertained in and by the following statement and
accompanying drawing (that is to say) :-
This invention relates to improvements in telegraphic apparatus of the kind for
which I applied for Letters Patent dated January 7th 1887 and numbered 266 being
a communication to me from abroad by David Kunhardt of Auchen, in the Empire
of Germany).
In the apparatus which formed the subject of the said former Invention were
described upright cones with vertical projections representing alphabets arranged in
their circumference on two series, from a to n and from o to .
The improvements which form the subject of the present invention have for their
object a more ready and convenient operation of the keys by hand, as also a greater
facility to the operator for observing the revolving alphabets, thus requiring a less
intense attention on his part.
The upright cones described in the specification of the said former invention are
replaced, according to the present invention, by a revolving cylinder A horizontally
arranged as shown in Figures 1 and 2 of the accompanying drawings (which are in
illustration of the invention).
The projections forming the alphabet are also arranged in a horizontal range upon
the circumference of the said cylinder.
The keys abc &c. are arranged above the said cylinder at right angles and inclined
to the axis of the cylinder A, as shown in figures 1 and 2.
The knobs of the keys b, d, f, &c., are arranged out of line with the keys a ce, &c.,
in order to allow the keys to be placed nearer to each other. In order to give the
knobs dan advanced position towards the operator, it is preferable to arrange
them in a slightly elevated position, as compared with the knobs a, c, e, as illustrated
in figure 1. In plan the former range of knobs would partly cover the latter range,
but the division of the knobs in two series out of line allows sufficient space for the
arrangement as shewn.
The keys in each series are of equal length.
The type-plates are essentially the same as described in the specification of the
former invention.
The disc for distributing the currents by means of soven metal-plates for each
alphabet as described in the former specification is arranged at the left hand of the

page_text: cylinder A, as shown in figure 2; The device shown in this modification is one
which allows the transmission of telegrams simultaneously to two different stations,
the spring blades 7 and 8 are the same as described and shewn in the former specifica-
tion already referred to.
The working cylinders A are mounted directly upon the revolving driving shaft,
whereby all the gearing is avoided, which was necessary for driving the cones of the
original modification. The shaft of the cylinder A turns in bearings 1, as shewn in
figure 2.
In figure 1 the inclined position of the keys is shown above the cylinder, the key b
keeping its normal position.
The dotted line indicates the path described by the type plate, as it arrives below
the key a which has been pressed down to make contact, whereupon the pawl of the
key is disengaged as described and shewn in the said former specification."
As shown in figures 1 and 2, the disk s carries a cam which passes below a spring
lever m, carrying at its upper end a hammer n, which, as soon as the cam has passed
below the lever m, strikes against and sounds a bell.
The said bell, accordingly, gives to the operator a signal as soon as the alphabet
used last has passed by, thus reminding him to push down the knob for the following
type. Of course the signal is given only after the passage of the lasi type plates
which transmit the commutated current.
It will be necessary that each operator should have a bell of the kind described
connected to his working cylinder, in order that he may be duly called whenever a
new alphabet requires his attention by the use of such signal bell the attention of
the eye is not so much required, whilst without it the eye is required to be intensely
bent upon the revolving alphabets.
In order to avoid the disturbing noise of the frequently repeated bell-sounds, it will
be convenient to apply to the hell a piece of soft feli, acting as a damper.
And it will further be expedient to use bells of a different sound for each of the
cylinders, in order that each of the operators may easily catch the sound of his bell.
S, figure 1, shows a frame for the telegram paper.
Having now particularly described and ascertained the nature of the invention and
in what manner the same is to be performed, I declare that what I claim is
In place of the upright revolving cones described and claimed in the specification
of the former Letters Patent herein referred to, the arrangement of revolving cylinders
on a horizontal shaft, with the alphabet horizontally arranged on their circumference,
the keys being arranged above the said cylinders at right angles and inclined towards
the shaft, with their knobs arranged in alternately different lines, the disks s also
carrying cams, which when passing below the lever m of the hammer n, cause a bell
to sound in order to signal to the operator whenever an alphabei has passed by, all
substantially as described and for the purpose set forth and shewn.
Dated this 12th day of December 1887.
EDWARDS & Co.,
Agents for the Inventor.