An Improved Device for Turning the Leaves of Music Books and the like.
Year: 1896

page_text: Date of Application, 20th June, 1896-Accepted, 25th July, 1896
COMPLETE SPECIFICATION.
An Improved Device for Turning the Leaves of Music Books and
the like.
I FILIP KNUT GUSTAFSON, Engineer, Vestra Storgatan 23, Jönköping,
Kingdom of Sweden, 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:-
This music leaf turning device is provided with similarly to the devices used
hitherto, arms or rods entering between the sheets of music, by means of which the
latter are turned; the present device differs from those hitherto used by the rods
or arms not being stationary but being mounted on a slide by means of which they
slide in front of the device for holding the sheets this movement causing the sheets
to be turned.
In the accompanying drawing
Figure 1 represents the present device in front view, Figure 2 in cross section
and Figure 4 in plan.
Figure 3 is a detail and Figure 5 a modified form of construction.
The slide b is constructed to slide along a guide-bar a parallel to the lower edge
of the music book. On the slide b is fixed a series of rods or arms c c etc. in
upright position. The slide can be moved forward or backward when desired by
means of cords f which pass over guide-pulleys g and over other suitably arranged
guides in order to connect them to a movable part which is so arranged that it can
be caused to move to the right or to the left (or upward or downward) by the knee
or foot. If the slide is at the right hand side and the first rod c is placed behind
the first sheet the second rod el behind the second sheet, and so on, then when the
slide is pulled to the left, the sheets will be turned over one after another as the
rods pass the holding device of the sheets or the middle of the opened music-book.
In order to accelerate turning over of the sheets, the rods can be bent to an
inverted L-shape or otherwise and so arranged that when they pass the holding
devices they rotate. For this purpose the rods, as shown in Figures 1, 2 and 4,
are mounted on the slide 6 so that they can rotate and are provided with
turnblocks i which are operated by a tooth or projection h fixed to the guide-bar.
When the rod passes the obstacle hit makes half a revolution, whereby its knee-
shaped end is turned from right to left and so turns the sheet. The rods may also
be inclined in an oblique direction and be caused to swing in a plane parallel to
that of the sheet. This is readily seen in Fig. 5. The rods, which can turn round
a horizontal pin are operated by the tooth L when they pass the holding devices of
the sheets, the end of the rod being provided with a notch which engages with the
tooth . After the rod has turned, a premature turning back of it, is prevented
The
by the turnblock / or the end of the rod e resting against the guide bar a.
arms or rods may be placed loose in a sleeve shaped holder n on the slide, so that
only as many rods need be out in as required for the number of
in each case.
pages
This does not prevent the arms from being able to turn or to swing, as the tubular
piece N is mounted on the slide so as to be able to turn. Fig. 3, shows a rod c
taken out. The rod c is provided with a small bend d which enters into a notch e
in the upper edge of the tubular piece n.
In order to avoid the necessity of separating the rod from the piece n the
former may be mounted on the latter so as to be able to swing. This is illustrated

page_text: in Figs. 6 and 7. The rod c lies with one end in the piece n which is divided at its
upper end, and is pivoted to that piece by a pin c. Further the rod is bent near
the pin so that when turned up it takes the position shown in Fig. 6 and when
turned down the position shown in Fig. 7. In the latter case the rods lie along the
slide b and so occupy very little space.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
(1) A device for turning over pages of music or the like characterized by a
series of rods c c c 2 &c. inserted between the pages, and turning them, the rods
being arranged in a row on a slide adapted to slide on a guide-rail a parallel to
the lower edge of the music book, in order to cause the rods or arms to turn over
the pages on passing the holding devices of the pages.
(2) In a device for turning over pages of music or the like the arrangement of
the upright knee or other shaped arm c on the slide 6 so that said arm is capable of
turning and may be turned round its own longitudinal axis, the arm c carrying a
turnblock i provided with a notch with which engages a tooth or projection / fixed
to the guide-bar in line with the sheet-holder, in order to cause the arm partaking
of the movement of the slide to turn when passing the sheet holder and so to
accelerate the turning over of the pages.
(3) The modification of the arrangement described in Claim 2, consisting in the
arme being pivotted on the slide in such manner that it can swing in a plane
parallel to the sheet, the pivot pin of this arm forming an angle with the guide-bar
and the tooth secured to the guide-bar being so arranged so that it can operate
the lower end of the arm.
(4) In the arrangement characterized under Claim 2 the arrangement of the
turnblock so that said turnblock is faced on two sides one of these sides resting
against the guide-bar, after the arm has made half a revolution in one or the other
direction, for the purpose of preventing the arm from swinging independently of the
operating mechanism.
(5) In the device for turning over sheets of music and the like characterised in
Claim 1, the arrangement of the arms in sleeve like holders which are pivotted on
the slide, for the purpose of enabling any required number of arms to be
employed.
(6) In the device for turning over sheets of music and the like characterised in
Claim 1, the arrangement of the rods (CCC) adapted to swing on the shafts n
(Figs. 6 and 7) which shafts cause the said rods to swing.
Dated this 20th day of June 1896.
BOULT & WADE,
Agents for the Applicant.