Improvements in Note Discs and Bands for Musical Instruments.
Year: 1895

page_text: Date of Application, 10th June, 1895
Complete Specification Left, 24th Feb., 1896-Accepted, 10th June. 1896
PROVISIONAL SPECIFICATION.
Improvements in Note Discs and Bands for Musical Instruments.
I, HUGO BURCKAS, Lawyer, of Leipzig, in the Empire of Germany, do hereby
declare the nature of this invention to be as follows:
-
The present invention relates to note sheets, discs bands and the like, for
mechanical musical instruments and consists in the peculiar formation of the pins
or studs on the same, which engage the valve levers of the instrument.
According to the present invention the note sheet band or disc is made of sheet
metal, and the pins studs or projections are cut or stamped out of the said sheet on
three sides and then bent round so as to project outwards at a right angle to the
surface of the disc band or sheet. Now it is well known that the projections on
mote discs have to be of varying length according to the duration of the tone
which they actuate, and the object of the present invention is to enable projections
of varying lengths to be cut or stamped all with the same die. This object is
attained by making the die of a size to stamp out the smallest projection which
occurs on the sheet. Such die would stamp out three sides of a square and the
rectangular tongue thus formed would be bent round at right angles to the said
sheet. If it is required to form a longer projection on the sheet, a second tongue
is stamped out adjoining the first and bent round in a similar manner to the first so
as to leave an adjoining orifice in the metal sheet, and when bent round to stand
close to the first tongue or tooth forming a continuation of the same.
Thus it will
be obvious, that by stamping a series of such tongues or teeth one along side the
other, the length of the projection or ridge thus formed on the disc, sheet or band
may be varied in any desired manner.
The invention is of particular advantage in connection with note discs, in which
the projections have to be varied for one and the same length of tone, according as
they are situated near to or further from the centre of the said disc.
Dated this 10th day of June 1805
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Note Discs and Bands for Musical Instruments.
1
I, HUGO BURCKAS, Lawyer, of Leipzig in the Empire of Germany, do
hereby declare the nature of my invention and in what manner the same is
performed to be particularly described and ascertained in and by the following
statement :-
The present invention relates to note sheets, discs bands and the like for
mechanical musical instruments and consists in the peculiar formation of the pins
or studs on the same, which engage the valve levers of the instruments.
According to the present invention the note sheet band or disc is made of sheet
metal, and the pins studs or projections are cut or stamped out of the said sheet on
three sides and then bent round so as to project outwards at a right angle to the
surface of the disc band or sheet. Now it is well known that the projections on
note discs have to be of varying length according to the duration of the tone

page_text: which they actuate, and the object of the present invention is to enable projections
of varying lengths to be cut or stamped with the same die. This object is attained
by making the die of a size to stamp out the smallest projection which occurs on
the sheet. Such die would stamp out three sides of a square and the rectangular
tongue thus formed would be bent round at right angles to the said sheet. If it is
required to form a longer projection on the sheet, a second tongue is stamped out
adjoining the first and bent round in a similar manner to the first so as to leave an
adjoining orifice in the metal sheet, and when bent round to stand close to the first
tongue or tooth forming a continuation of the same. Thus it will be obvious, that
by stamping a series of such tongues or teeth one along side the other, the length
of the projection or ridge thus formed on the disc sheet or band may be varied in
any desired manner.
:
The invention is of particular advantage in connection with note discs, in which
the projections have to be varied for one and the same length of tone, according as
they are situated near to or further from the centre of the said disc.
And in order to make the present specification more easily intelligible reference
is had to the accompanying drawing in which similar letters denote similar parts
throughout the several views:―
Fig. 1 being a plan of a note disc made according to the present invention and
Fig. 2 a section through the same on the centre line M-M of Figure 1.
The projections are formed by stamping a strip out of the plate or disc P of
suitable metal and bending the said strip, which is not cut out all round but only on
three sides, downwards, to stand at right angles to the face of the disc as shown
at a and b in the drawings.
Now in making note discs of this kind hitherto it has been necessary to have
different dies for the various perforations which vary in length, and consequently
the costs of manufacture are considerably increased. This is particularly the case
with note discs because the length of the projections varies for the same length of
tone according to the distance of the said projection from the centre of the disc.
Thus a projection which is close to the centre, will be shorter for the same length
of tone than one which is situated at or near the periphery thus rendering the
manufacture of discs of the present construction very complicated.
: Now according to the present invention in order to make projections of any
desired length with one and the same die, or stamp, the said die is made of a size
corresponding to the smallest projection to be stamped and for the projections of
varying length two or more such projections are stamped out adjoining so as to
form a continuous ridge when bent round as shown at a, b indicating the smallest
size of projection.
From the above it will be obvious that projecting ridges of any desired length
may be formed on the disc P by means of one and the same die.
Although in this specification discs only have been referred to still I wish it to
be clearly understood that the invention may be equally well applied to bands of
metal where such are employed.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is performed 1 declare that what I claim is :-
A note disc having therein a series of projections extending vertically from the
said sheet and of varying length said projections consisting of one or more tongues
of similar size arranged next each other without intermediate space substantially as
.described.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, W.C., Agents for the Applicant.