Year: 1889

page_text: Dack of the device for producing the tune sheets.
The improved musical instrument shown has the shape of an upright box supported
by feet and having its front side plain, i.e. without mechanism or such like, but
ornamented with sound holes, while the tune sheet mechanism is provided in the back
of the box, Fig. 2.
The rollers 9g for moving the tune sheet which are actuated from the crank u,
placed on shaft t, by means of suitable transmission wheels, seize the separate
links vw of an endless tune sheet, which after leaving the interstice between the
rollers are caused to tilt over by the action of the pegs h and fold together side by
side, Fig. 1. The pressings pegs h are operated by means of lever k and pivot
handle which is situated outside the box.
By this arrangement not only tune sheets of a certain length can be played off by
means of the tune sheet channel a, but also endless sheets, the links v and w of
which are adapted to be laid together book fashion.
The said sheets consist of a suitable number of coherent folding links, made from
two layers of thin but strong sheets of paper or other convenient material, placed
upon each other while simultaneously the yielding intermediate material is inserted
and secured between the single links.
The bottom layers of paper or other substance are placed side by side on a heated
underlayer or plate, subsequently the strips of linen or other flexible material are
laid on and between the single layers and the glued or similarly treated top layers
are pressed on, thereby durably connecting the separate links with the intermediate
strips and consequently with one another.
To attain this end in a satisfactory manner the appliances illustrated in the
drawing may be employed. A indicates a plate adapted to be heated and serving to
receive the bottom layers for making the links. D represents the flexible strip laid on
between each two adjoining layers, and E the upper layer of paper or other material,
provided with glue or other binding substance. To allow the links, thus composed to
be effectively compressed and the strips secured between the same, pressing plates F,
capable of being folded up, are provided. Over the said pressing plates is laid a
pressing block or beam G adapted to be pressed or raised by means of bearing
levers Hand J and screws K.
In order to maintain a uniform distance between the separate links of the tune
sheet and to provide an abutment for the link layers and intermediate pieces, the
гр...

page_text: base plate A is fitted with pins L so placed as to stand always between two
contiguous pressing plates F. These pins and the interstices between the links
are shown in the drawing, for clearness' sake, somewhat larger than required in
practice.
The described device for producing folding tune sheets may be of such size as to
yield long links i.e. broad link sheets, which can be subsequently divided into
several tune sheets, as indicated by dotted lines ar and zz. Fig. 6.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare, that, what I
claim, is:
1) A mechanical musical instrument being formed as an upright box provided
with feet and having the mechanism, consisting of rollers g g' for moving the tune
sheet, in the rear, while the tune sheet forms an endless chain of flexibly jointed
plates and w, which, while the instrument is playing, are, one by one, tilted by
peg h, substantially as and for the purpose set forth.
2) For the purpose of producing tune sheets as referred to in claim 1) the process
for making chain fashion sheets for mechanical musical instruments, consisting in
forming the single plates or links from two layers B and E of paper or other
convenient material and, while connecting said layers together, introducing between
each two links a strip of flexible material, which is thus inserted between the top
and bottom layer of the respective two plates or links substantially as set forth.
3) For the purpose of carrying out the process referred to in claim 2) a device
consisting, of a plate A, adapted to be heated and provided with abutting pins L,
the folding plates F, a pressing block or rail G, screws K and bearing levers H
and J, substantially as set forth.
Dated this 18th of December 1889.
EUGEN
WELLNER.
Per Huelser & Co.,
Attorneys.