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Патент USA US2407573

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Sept. 10, 1946.
c. w. Moss
Filed June 8, 1945
2 Sheets-Sheet 1
W7) 7/7 3
. '
' Cum/s W. Moss.
. armlwgx
Sept 1m, 1946.
c_ w_ Moss
Filed June 8, 1945'
2 Sheets-Sheet 2
Cum/s W. Moss.
Patented Sept. 10, 1946
Curtis W. Moss, Detroit, Mich.
Application June 8, 1945, Serial No. 5955.337
4 Claims.
(01. 84-503)
The leaf turner of my invention is of the kind
that is to be actuated by a foot pedal from which
a cable or other connecting means extend to the
therefrom. Rotatably mounted on back wall 23
respective parts of the mechanism, adapted to
to as a crown wheel.
by means of a pin 22, is a segment of a crown
wheel, which hereinafter shall be brie?y referred
The crown wheel is pro
vided at a point close to its outer periphery with
a loop 23, the loop serving as a means of attach
ment to a flexible cable 2-’; passing downwardly
light, compact device which can be easily applied
through aperture
in base
The cable, en
to a conventional music stand.
closed by sheath I3, extends to a pedal device it,
Another object of my invention is to make my
device simple in construction and economical to 10 as mentioned above. This responds to pressure
applied by foot, transmitting a downward pull
make, so that it can be turned out in quantity at
turn sheets of music.
The purpose of my invention is to provide a
on cable ?ll.
a low cost.
I shall now describe my improvement with ref
Mounted on the above mentioned
pin 22 is a spool 23. A spring 2%, coiled thereon,
is affixed at one end to the rim of the crown
erence to the accompanying drawings, in which:
Fig. 1 is a perspective view of a music stand 15 wheel 2!, while the other end 3!} bears against
with sheets of music thereon, the view disclosing
the upright surface of base 23a, to yieldingly re
the location of my music leaf turner on said
Fig. 2 is a plan view of a bracket to be af?xed
to the music stand and adapted to support essen
sist the rotation of the wheel in response to the
pull of cable 26;‘. The teeth
of crown wheel
2;! are meshed with rungs of pinion 33, the shaft
31?, of which is journalled in the top it‘ of holder
tial parts of my turner.
i9. The said top is omitted from views shown in
4, 5 and. 8, for clearer display of parts of the
Fig. 3 is a side elevation of said bracket.
Fig. 4 is a perspective: view, partly exploded for
better illustration, of the mechanism of
er, with a View of a leaf holding clamp.
mechanism disclosed therein.
The drum-like member 35 of pinion
is pro
25 vided with a pair of parallel arms 33, disposed
Fig. 5 is a perspective view, partly broken off,
radially with respect to said member. Pivotally
supported by the arms by means of a pin lid, is a
claw 3? extending downwardly and including at
its upper end a lug 39. A coil spring 38, disposed
6 is the bottom view of a holder which
said lug,
houses the mechanism of my turner.
30 betweeen the body of member 35
causes the lower end of the claw to bear inwardly
Fig. 7 is an enlarged side elevation of elements
forming a part of the mechanism of my turner.
towards the axis of the pinion. At the lower end,
the pinion is journalled in an annular member G2
Fig. 8 is a top elevation of the same mecha
on top of a plate ill, to which said annular mem
nism, the top plate of the holder being removed.
her is integrally connected. The plate has a out
{or a better View.
line of a cam of a spiral eccentric formation and
Fig. 9 is a side elevation of a leaf clamp and
includes a radially disposed contact face 1.15 for
means to support it.
engagement with claw 3'5. The plate is capable
Fig. 10 is an end elevation of the clam-13> and
supporting means shown in Fig. 9.
of being rotated around its axis on the surface
Similar numerals refer to similar parts 40 of a similar cam-like plate 5i, provided with a
throughout the several views.
radial contact face 52. This is best shown in
Fig. 8.
The position of my turner with respect to a
A shaft It?» extends from the center of the an
music stand is shown in Fig. 1 where the stand
nular member $32, downwardly through plates ii 1,
it supports a music sheet rack H and where
5i and base 25 of holder it. The shaft is dis
my turning mechanism is identi?ed by numeral
closed in Figs. 5, 6 and '7. At its upper end, the
l2. The mechanism is adapted to be actuated by
shaft is held securely within said annular mem
a pedal device It, connected with mechanism l2
by means of a cable enclosed in a sheath 13. The
ber (i2 by means of a screw rill. At its lower end
the shaft supports a rod Mi, which extends ra~
mechanism is contained in a holder !9, mounted
on a bracket l5. Said bracket has: a flat shank DU dially from the shaft and supports a leaf
clamp ill’.
it provided with ears Hia, said shank being
adapted to be fastened to a central upright mem
The lowerinplate
base 5i
of holder
an annular
as shown
hub in
ber 58 of rack I I. This is done by means of cross
of the same mechanism, shown from a different
Fig. 6, and supports another rod 55 carrying at
its outer end another leaf clamp d'i. It must be
pointed out that the contact face
in the ro
The main part of the mechanism; of my leaf
tary plate ti is somewhat more remote from
turner is contained in a holder I!) which includes
the axis of the plate than the similar contact
a back wall 20 abutting the bracket 15, a hori
face on the lower plate 5i. As a result of that,
zontal top 26 and a horizontal base 26a, spaced 60 when claw 3'! bears against the contact face
bands [1, said member 58 being sandwiched be
tween the shank and the bands, which are L,
a?ixed to ears 16a by screws IS.
45 in the upper plate, it cannot reach the con
tact face of the lower plate. In other words,
when the bearing faces of the respective plates
are aligned, that is, when they are substantially
aligned axially, each having a radial contact face
one above the other, the claw will engage the
[ace of the upper plate but not that of the lower
plate. However, when the upper plate had been
but each succeeding face, from top down, being
closer to the common axis of rotation than the
preceding face, each plate being connected to
a radially disposed rod supporting at its end a
clamp for attachment to a leaf of a music book,
end by means of spring 38, will engage the con
tact face of the lower plate and thus wil1 serve
a rotary member axially aligned above said plates
but remaining in a ?xed relation longitudinally
to said axis of rotation, a downwardly extending
claw pivotally mounted in said member, said claw
being adapted to engage the contact face of each
of the plates, successively from top down, and
as a means to impart a rotary motion thereto.
gear means responsive to a pull of a cable to
swung around its axis by means of said claw
and the claw had been returned to its original
position, said claw, inclined inwardly at its lower
As already pointed out, each rod, that is, rod
apply said claw to the respective contact face
45 and
supports a leaf clamp 4'5’, the latter 15 to swing the respective plate around its axis.
being suspended from a conveyor I58, including
2. A leaf turner of the kind described, com
rollers d9 riding on the respective rod. The con-~
prising a plurality of cam-like plates disposed
veyor and the clamp it? are loosely connected by
parallel to each other and adapted to rotate indi
a rrember ?ll. The clamp, which is normally
vidually around a common axis, each plate hav
dis, need in the plane of the conveyor, is capable
ing a radially disposed contact face, but each suc
of being turned horizontally at an angle to the
ceeding face from top down being closer to said
plane of said conveyor.
common axis than the face of the plate above,
I shall now describe the operation of my leai
an axially disposed pinion above the uppermost
turner. Assuming that a book of music is placed
arm extending radially from the base
on rack ll of stand it and is open for reading 25 of the pinion, a downwardly extending claw piv
by a musician, and that one or two leaves will
nted in said arm, spring means urg
have to be turned in the course of said reading,
ing the lower end of the claw inwardly into
a clamp on rod 453 is aflixed to one leaf and an
engagement with the face of the respective plate,
other clamp on red 54 is affixed to another leaf,
successively from top down, to turn the respec
new‘ in order of pages. When it is desired to
tive plate around its axis to the extent approxi
tic-e ?rst page, the pedal device if! is de~
mating 3.86 degrees, a rod affixed to each plate
effects a pull on cable 24, actu
and extending therefrom in a plane spaced there
ating the crown wheel 2i against the tension of
from, a leaf clamp pivotaily suspended from the
The pinion. 33 driven by the crown
outer end of each rod, gear means to impart a
wheel is made to turn around its axis, whereby 35 rotary motion to the pinion and pull cable means
the claw mounted from arms on member 35 of
to actuate said gear means.
said pinion engages the contact face of the upper
cam plate, causing it to swing around its axis to
about 180 degrees from its original position. As
3. A leaf turning device of the kind described
comprising a plurality of horizontally disposed
cam-like plates adapted to rotate around a com
shaft 113 extending downwardly through base 26a 40 mon axis, each plate having on the marginal
of holder it, rotates with said upper plate and as
portion thereof a radially disposed contact face
clamp 42’, affixed to a leaf in the music book, is
but each succeeding face, from top down, being
carried by a rod extending radially from said
shaft, the rotation of the plate serves to turn
closer to the common axis or rotation than the
face above, a claw pivotally mounted above the
leaf. This time the next leaf may be
top plate for rotation around said axis, spring
similarly turned by again depressing the pedal
means causing the claw to bear inwardly from
device 24. Each time when the claw has swung
its pivoted connection towards said axis to engage
around the respective plate, it is made to return
successively each of the radial faces to rotate
automatically by said coil spring 29, acting upon
the respective plate, a rod affixed to each plate
crown wheel 2! and by means thereof upon pin 50 and extending radially therefrom, means on each
ion 33.
rod to be ailixed to a music leaf, means to im
If the operation of turning of said leaf is to
part a rotary motion to said claw in one direc
be repeated, the leaves with clamps attached to
tion, and spring means to return the claw back
them may be turned back manually to their orig
to its initial position.
inal position.
55 4. A music leaf turner including a casing, a
It will be seen that the turner does not have
vertical shaft journalled therein, a rotary mem
to be limited to two leaves, but that it may be
ber mounted on the upper end of the shaft, a
made to include three or larger number of super
claw pivoted in said member and extending down
imposed plates each having a contact face for a
wardly thereof, spring means urging the claw
claw, but each of said faces being in succession 60 towards the shaft, a plurality of cam~like plates
from top down a little closer to the axis of the
mounted thereon. for rotation around said shaft,
pinion so that the claw will successively engage
each of the plates having on its outer margin
the respective faces one by one from top down,
means for engagement with said claw, said means
thus causing the rotation of rods controlling the
being progressively closer to the shaft, with each
respective leaves of a music book.
65 plate following the top plate, downwardly cable
It will be understood that some changes may
means to cause the claw to rotate each plate in
be made in the construction of my leaf turner
succession, spring means to return the claw to
without deviating from the inventive principle
its initial position upon rotation of each plate
disclosed herein.
and a rod extending from each plate radially,
What I. therefore, wish to claim is as follows:
for connection with an individual music leaf.
1. A leaf turner of the kind described, com
prising, a plurality of rotary, cam-shaped plates,
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