Improved Musical Box with Clockwork Mechanism.
Year: 1897

page_text: Date of Application, 16th Nov., 1897-Accepted, 23rd A pr., 1898
COMPLETE
SPECIFICATION.
Improved Musical Box with Clockwork Mechanism.
I, ARTHUR JUNGHANS, of Schramberg, in the Kingdom of Wurtemberg,
Merchant, 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 present invention relates to a musical box with note disc connected with
a clockwork mechanism. The said note disc can be exchanged in such manner
that the clock mechanism need not be raised and turned round for this purpose;
moreover, the driving mechanism of the musical box is actuated completely
noiselessly, and the speed of the same, or in other words, the time of the piece
which is being played, can be regulated at will.
My invention is illustrated in the accompanying drawing, in which
Figure 1 shews the first modification seen from behind.
Figure 2 shews a second modification seen from behind, and
Figure 3 shews a view from above of the second modification.
In order to effect the easy interchange of the note disc N of the musical box M
the latter is not mounted in the manner hitherto employed in musical boxes in the
base of the clockwork but in the head of the same under a lid which can be opened.
The parts of the clock mechanism serving to actuate the musical box such as the
spring box F (Figure 1), the gear wheels A, B, C, the worm wheel D, and the
worm shaft E are consequently arranged in the reverse position, so that finally
the flier W can be placed in the base of the clock. This arrangement has the
great advantage that W can be constructed as large as is desirable, and in conse-
quence thereof it will act more powerfully regulating upon the works and will
revolve noiselessly.
The parts above described are also retained in the second modification (see
Figures 2 and 3). This second modification is distinguished from the first only
by the manner in which and point from which the said flier W is regulated. The
regulating of W is effected in the first modification by applying a brake to its worm
shaft E (Figure 1) which is provided for this purpose with a brake disc G upon
which the spring H acts. The said spring can be pressed more or less against the
disc G by means of the lever K with eccentric J.
The action of the eccentric J is extremely simple. A brake cushion or spring H
is pressed against the disc G. His rotatable about a pin at its free end. Upon
rotating the eccentric by means of the crank K the spring H or brake-cushion is
pressed upwards against the disc G braking the same. With this braking action
the worm E and the flier W securely fixed thereto are also subjected to a braking
action.
In the second modification the adjustment of the brake spring may be effected
from the outside of the clockwork through the spindle m of the pointer / at the
dial k. The pointer axle possesses beneath the dial plate for this purpose a curved
To the said lever
disch which acts upon the lever g controlled by the spring r.
there is connected at f a draw bar c¹ e, which influences the arm g¹ of the brake

page_text: spring b. This brake spring is provided at its free end with a friction piece c
which applies itself to the brake disc o of the worm shaft e.
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. Clockwork musical box with interchangeable note disc characterized by having
the musical box M arranged in the top of the clockwork and having the flier W
of the musical gear apparatus in the base of the clock for the purpose of enabling
an easy interchange of the note discs N to take place without holding the clock
upside down and in order to obtain by placing the flier in the base of the clock an
increase of the wind pressure and consequently a more silent action of the
machinery.
2. In a clock combined with a musical box such as set forth in Claim 1, the
regulating device for the speed of the performance comprising the brake disc G
or o fixed upon the shaft of the flier W on which disc a brake spring H or g acts,
preferably provided with friction pad c, and which can be set to a suitable degree
by hand either by means of the lever K with eccentric J or by means of a pointer /
fixed outside the clock and having suitable lever connections.
101
1
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicant.