Year: 1886

page_text: Date of Application, 10th July, 1886.
Complete Left, 28th Mar., 1887.
Complete Accepted, 29th Apr., 1887.
I, ADOLF KARRER at Kulm, Argovie, Switzerland, Manufacturer of Musical Boxes,
do hereby declare the nature of this invention to be as follows:-
The object of my invention is to obtain a 4 or 5 times longer duration of playing of
musical boxes than has hitherto been attained.
The mechanism consists of a casing containing the spiral spring which drives the
machinery which is bent by means of a key to which a pawl is attached, which catches
into a ratchet wheel. The main driving cog-wheel gears into a smaller wheel on a
second shaft which carries also a larger cog-wheel. This gears into a long pinion
which gears also with the cog-wheel which turns the cylinder. The flying-pinion is
provided with a fuseo driven by a fusee-wheel attached to a pinion which is driven by
the cog-wheel on the cylinder through an intermediate pinion and cog-wheel. The
bridge is provided with a stopping arrangement composed of levers acting on a pin
which runs in a groove in the wheel on the end of the cylinder and catches into a
notch therein stopping the mechanism at the end of a piece of music. The bridge
composed of a lever and sliding-bolt acts upon a ratchet-wheel on which sits a cam
giving a small sliding motion to the cylinder through a pin thereon for the change of
music pieces. A spring is used to react upon the cam and bring the cylinder back to
its first position after each revolution of the cam or ratchet-wheel.
I do not confine myself to the precise details of the mechanism above described as
the same may be modified.

page_text: Improvements in the Mechanism of Musical Boxes.
I, ADOLF KARRER, of Kulm, Argovie, Switzerland, Manufacturer of Musical Boxes,
do hereby declare the nature of my invention and in what manner 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 has for its object improvements in the mechanism of musical boxes,
by which improvements the box continues to play for a much longer time than by the
ordinary method of construction.
In the accompanying drawing, which is in illustration of my invention, figure 1 is
a plan of the mechanism of a musical box, and figures 2, 3, and 4 are detailed views
of parts of the same.
The case a (figure 1) contains the spiral spring which drives the mechanism in the
usual way. It is wound up by means of the key or lever b, which carries a pawl c
acting upon the teeth of a ratchet wheel. The driving toothed wheel e, which is fixed
upon the shaft or spindle f, gears with the smaller toothed wheel g upon the shaft or
spindle which carries the main driving toothed wheel i.
The latter itself gears with and drives the long pinion k which drives the toothed
wheel m turning the pin cylinder n. o is the ordinary comb or set of vibrating
musical tongues.
The fly p is provided with a fusee or worm driven by the wormwheel 9 upon the
pinion which is driven by the toothed wheel m through the pinion s and toothed
wheel t.
In figure 2 are shewn side and end views of an arrangement for stopping the
revolution of the cylinder n when required. The bracket A is provided with the
levers B and C acting upon the pin D which enters freely a groove E (figure 4) in
the face of the wheel m, but catches into a notch E in the groove so as to stop the
revolution of the cylinder when desired at the end of a piece of music.
The bracket F (figure 3) is provided with mechanism by which the tune played is
changed. This consists of the lever G and sliding bolt H which acts upon the ratchet
wheel J upon which sits a cam L (figure 1) giving a slight sliding motion endways to
the cylinder n by means of the pin M in order to change the tune. The spring N
brings the cylinder back to its original position after each revolution of the cam or
ratchet wheel J.

page_text: I do not confine myself to the precise details of the mechanism described and
shewn, as the same may be modified more or less, but having now particularly
described and ascertained the nature of my said Invention, and in what manner the
same is to be performed, I declare that what I claim is :—
The combination of a single spring enclosed in a box and provided with the toothed
wheel e, an intermediate shaft provided with the toothed wheel i, and the pinion g
gearing with the wheel c, a tune cylinder provided with the toothed wheel m, and the
long pinion k gearing with the wheels m and i thereby increasing the length of time
for which the cylinder will be turned by the spring, substantially as and for the
purposes described and shewn in the drawing.