Apparatus for use in Teaching Telegraphy, also applicable for Secret Writing.
Year: 1892

page_text: Date of Application, 19th Dec., 1892-Accepted, 18th Mar., 1893
COMPLETE SPECIFICATION.
Apparatus for use in Teaching Telegraphy, also applicable for
Secret Writing.
I, ALBRECHT HEIL of Fränkisch Crumbach, Grand Duchy of Hessen, in the
Empire of Germany, 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 invention represented in the accompanying drawings and hereinafter fully
described has reference to an apparatus for writing with telegraphic signs and for
learning how to send and exercising in the sending of telegraphic despatches.
A transmission of the signs. to a second station by means of this apparatus does
not take place, as the electric current necessary for this is entirely wanting; the
signs are made directly upon the band of paper in the apparatus itself.
The construction of the apparatus is very simple and works in an absolutely sure
manner.
As shown in Figure 1 the key lever T by means of which in telegraphic apparatus
the current is closed and broken is not in communication with an electric-circuit
but by means of a rod N with a lever H movable on a standard M in such a manner
that by pressing down the key T¹ the lever H is lowered, while by releasing-again
the key T¹ the lever H is moved.upward in turning about the fulcrum p. To the
n, the
lever H on the same side of the fulcrum p are secured two pushers m and
former engaging into a toothed wheel the shaft of which carries a fly wheel S and
a small roller c while the pusher n strikes against a spring o actuating thereby the
pencil d.
The small roller c bears against a roller f round which the band of paper is
conducted, while the pencil d is directed against the underside of the said
roller f.
The apparatus is treated quite in the same manner as the ordinarily used
telegraphic apparatus. The signs are produced by pressing down the key T during
a more or less long time. By this the lever H is moved downward together with
the key-lever T by the connecting rod N, while the lever H is raised as soon as the
spring of forces the key upwards again.
The pusher m catches at each downward movement of the lever H into the
toothed wheel so that by the aid of the fly wheel S the roller c advancing the
band of paper g over the roller f is put in revolution.
The pusher n strikes at the time against the spring o pressing thereby the pencil
against the band of paper and holding the same in this position until the pressure
exerted upon the key T has ceased, as during this time the band of continues
paper
its advancing motion, the corresponding sign (dash or point) is produced by the
longer or shorter pressure of the pencil against the band of paper. The pencil & is
advantageously manufactured by folding up in its centre a conically shaped metal
strip or plate d¹ (Figure 4) and rounding off then the narrow face forming the
writing point.
The ink ascends easily in the thin slit of the point and the relatively great width
allows the liquid to flow too in an abundant quantity; the round writing surface
produces exact points and dashes. In comparison with the hitherto used pencil
consisting of a round small tube, my improved pencil obtained by folding up a
small metal plate offers in addition to the easy and abundant afflux the great
advantage to be cleaned more easily, rapidly and thoroughly as for this purpose it
is only necessary to pass a bit of paper, linen or the like through the slit for
removing from the said pencil all the impurities which may be contained
therein.

page_text: As already has been mentioned this apparatus does not serve for transmitting
signs from one station to the other, that is to say, to send real despatches, but it
represents rather a writing machine, by the aid of which telegraphing may be easily
learned and the proceeding of sending off and receiving telegraphic signs may
easily be demonstrated on one and the same apparatus.
The new apparatus is for this reason particularly fit for schools and the like and
it may advantageously be used for preparing documents in secret writing composed
of dashes and points.
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 :-
.:
1. An apparatus for writing with telegraphic signs in which the key.lever. T is
connected with a lever such as H in such a manner that the motion of the key is
transmitted to the latter without the agency of an electro-magnet a pawl or
pusher m secured to the said lever H advancing by revolving a toothed wheel ŕ the
band of paper against which at the same time a pencil d is pressed by a second
pusher n corresponding to the movements of the key substantially as described and
illustrated in the accompanying drawings.
ゲ
2. In apparatus of the kind pointed out in the first claim the construction of the
pencil d in such a manner that a conically shaped metal strip or plate d' (Figure 4)
is folded and rounded off on the narrow writing surface substantially as described
and illustrated in the accompanying drawings.
Dated this 19th day of December 1892.
W. P. THOMPSON & BOULT,
Agents for the Applicant.