IMPROVEMENTS IN THE MANUFACTURE OF PERFORATED MUSIC-SHEETS
Year: 1885

page_text: COMPLETE SPECIFICATION,
I, FRIEDRICH ERNST PAUL EHRLICH, residing at Gohlis near Leipsic, Kingdom of
Saxony Managing Director of Fabrik Leipziger Musikwerke of Gohlis aforesaid do
hereby declare the nature of the said invention for "IMPROVEMENTS IN THE
MANUFACTURE OF PERFORATED MUSIC-SHEETS," and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement :—
:
My invention relates to the manufacture of perforated music-sheets, such as are'
used for producing the melody in mechanical musical instruments, and it consists
in a punching-machine whereby a number of like sheets may be made at the same
time, and in the particular mechanism employed for causing the punches to act or
remain at rest at the will of the operator.
On the annexed sheet of drawings a machine involving my improvements, and.
arranged for perforating circular music-sheets, is shown by Fig: 1 in front elevation,
partly in section, by Fig: 2 in plan, and-by Fig: 3 in transverse sectional elevation.
Fig: 4 is a portion of the transverse sectional elevation, and Fig: 5 a portion of
the plan of a machine arranged to produce rectangular sheets. Fig: 6 is a
modification of a part of the mechanism.
On a frame G are secured a number of standards S, carrying the guiding boxes S₁
of the punches q. These punches are operated by a common shaft a through the
medium of eccentrics and eccentric-rods. In front of the punches there is a table t
adapted to be moved towards and away from the punches. As shown by the
drawing the same slides at its ends in the guides f, and in the middle on the
guide f, and it may be shifted by two screws 8, working in the nuts m, fixed to
the table, the said screws being connected together by the bevel-wheels g g¹ and
gg and a shaft, and one of them having a hand-wheel h. On the table tare
mounted, opposite to the punches q, the worm-wheels r, rotative on fixed pins p.
With these wheels gear the worms n keyed on the shaft w, which is placed in
bearings attached to the table, and provided with a crank k for turning it. All
the worm-wheels r may thus be rotated simultaneously. The said wheels, whose
upper surface is on a level with the top of the dies or matrices of the punches,³
serve as carriers for the circular blanks N, from which the music-sheets are to be
made, the central position of the blanks being secured by the pins p, arranged to
project from the wheels r and on which the blanks are slipped with a hole at their
centre. By means of a driving pin p² fixed into each wheel r, and to which
corresponds another hole in the blanks, the latter are caused to partake of the
rotation of the wheels. The blank N' to be placed on the worm-wheel nearest to
the operator, bears on its surface a print or drawing of the portions to be removed
from all the blanks by the punching process.
The punches require to be provided with means whereby they may be put
quickly in motion and as speedily stopped again. For this purpose any suitable

page_text: connecting and disconnecting device may be inserted between the shaft a and the
driving-gear of the machine; but I prefer to employ the contrivance shown by the
drawing, and which is as follows. At the head of a lever are mounted on a short
shaft the driving-pulley & continuously rotated by a strap, and a friction-wheel b'.
Opposite to the latter the shaft a is provided with a corresponding wheel b. The
lever has its fulcrum at d, Fig: 3, and against its foot acts a spring u, so as to
keep the wheels b and 6¹ out of contact with each other, whereas by means of a
treadle c pivoted at o, the lever may be oscillated with the effect of pressing the
wheel b¹ against b, and of thus causing the rotation of 61 to be transmitted to b.
e is a stop for limiting the action of the spring on the lever and the treadle.
When the blanks N and N¹ are in their place and the punching operation is to
commence, the table t is adjusted by the hand-wheel h so that, for instance the
outer circle of notes printed or drawn on the pattern-blank N¹ will be below the
corresponding punch q, and the sheets are turned by the crank k so as to fetch a
dot, or the end of one of the lines on N¹ corresponding to a note, under the punch.
The treadle being then depressed for a moment, all the punches will be put in
motion and punch a hole into the blanks N as well as N¹. If this hole is not yet
of the length marked on N¹, the sheets are turned by an amount equal to the
breadth of the punch, and the treadle depressed again. This operation is repeated
until the hole has attained the requisite length. Hereafter the following holes of
the same circle are made in like manner. The table t is then successively adjusted
for the other rows of perforations, and the work continued as described.
In case rectangular sheets are to be punched, the carrier for the blanks O and O'
consists in a slide v, guided parallel to the length of the tablet and arranged to be
moved by means of a rack attached to the slide and a single worm n keyed on the
shaft w. The blanks may be fixed on the slide by clamps v¹.
Fig: 6 shows a modification of the mechanism serving to rotate the circular
blanks N and N¹ of Figa 1 to 3. The worm-wheels r are in this case replaced by
pinions, and these are simultaneously rotated by a rack wl and a pinion w³
provided with a crank. In similar manner the worm n of Figs: 4 and 5 may be
replaced by & pinion gearing with the rack on the slide v, and having a crank fixed
on its axle.
:
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
1. In a machine for making perforated music sheets, the combination with each
other of a number of punching-devices S S¹ actuated by a common shaft a, means
for engaging the shaft with a continuously rotating driving-gear and disengaging
it therefrom, a sliding table t, on which are mounted one or more carriers for the
sheets to be punched, means for adjusting the table t transversely, and means for
moving the carrier or carriers so that the sheets will be shifted in the direction of
the lines of perforations, substantially as and for the purpose described.
2. The combination with a number of punching-devices S S¹, the sliding table t
and a carrier or carriers for the sheets to be punched, of a shaft a operating all
the punches and provided with friction disk b, lever l carrying the friction-disk b'
and pulley i, spring u and treadle c, substantially as and for the purpose specified.