Leaf-Turner. Page: 7 of 10
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1,364,992
of the spring upon the lug tends to hold the
jaws in either position in which they may
be set.
With all devices heretofore produced, so
5 far as I am aware, great difficulty has been
experienced in holding the several sheets of
music in position to be respectively engaged
by the leaf-carrying arms and my present
invention provides means whereby the sev-
10 eral sheets will be firmly held in position
upon the music stand until each sheet has
been properly engaged by a leaf-carrying
arm. This mechanism comprises presser
fingers 65 which are adapted to project
15 through the desk of a piano or through the
front of a music stand and when in one posi-
tion, project over the edge of the book or the
several sheets of music and when turned to
another position lie flush with or below the
20 surface of the desk and, consequently, offer
no obstruction to the turning of the leaves.
A knob or other handle 66 is also provided
in the piano desk or the music stand so that
by rotating this knob in one or the other
25 direction, the presser fingers 65 will be either
projected and turned to engage over the
music or will be turned from over the music
and then withdrawn to the music stand.
Preferably, the presser fingers will be ar-
30 ranged to seat in recesses 67 formed in plates
68 secured upon the music stand and the
knob 66 will also be arranged within a de-
pression or cavity in a suitable plate 69 pro-
vided upon the music stand. The plates 68
35 form the front members of brackets or
guides 70 which extend into the housing 2
and support the slidable rock shafts 71 which
have the presser fingers 65 at their front ex-
tremities. Upon the inner or rear ends of
40 these rock shafts 71 are cranks 72 which are
pivoted to lugs or ears 73 at the opposite
ends of a vertically disposed bar 74. Be-
tween its ends this bar is hung upon a spring
rod or shaft 75 and is held normally toward
45 the end of said shaft by a spring 76 which is
coiled around the said spring shaft or rod
between a bracket or guide 77 and the verti-
cally disposed bar. This bracket or guide
77 is secured to the front wall of the housing.
50 2 and the outer end of the said spring rod or
shaft 75 is held in a bracket 78 also secured
upon the front wall of said housing, as
shown the said end of the rod being formed
into a spring coil 79 having its extremity in
55 the form of a rod 80 secured in the said
bracket 78. To the inner end of the spring
shaft 75, is pivotally attached a link 81
which is also pivotally attached to a crank
82 on the inner end of a rock shaft 83 which
60 is mounted in a suitable bracket 84 upon
the housing 2 and carries a pinion 85 mesh-
ing with a pinion 86 on the inner end of a
shaft 87 which projects through the housing
and carries the knob 66 at its front end. A
65 spring 88 is coiled around the spring shaft75 and has its ends carried above and below
said shaft, as shown at 89, the extremities
of these vertically disposed arms 89 being
bent horizontally, as shown at 90, to project
between the vertically disposed bar 74 and 70
the front wall of the housing and bear upon
the said bar with a tendency to press the
same rearwardly and hold it away from the
front wall of the housing. In each of the
brackets 70 and extending parallel with the 75
rock shaft 71 therein, is a guide and stop rod
91 and upon the said adjacent rock shaft I
provide stop fingers 92 which project radi-
ally from the said rock shaft at an angle of
about 45 degrees to each other and are 80
adapted to engage the said guide so as to
limit the rotary movement of the rock shaft.
When a book or sheets of music are to be
secured to the music stand, the knob 66 is
rotated and will obviously impart a rotary 85
movement to the shaft 83 through the gear-
ing illustrated and described. The rotation
of the shaft 83 will be such that the crank
82 will exert a pull through the link 81 upon
the bar 74 against the tension of the spring 90
arms 90. The shafts 71 will, consequently.
be caused to slide forwardly through the
brackets or guides 70 and the presser fingers
65 will be thereby moved to a. position in
front of and spaced from the music stand 95
or the front of the housing 2. As the crank
82 swings downwardly and rearwardly past
a dead center, it will exert a downward pull
upon the link 81 which will in turn impart
a downward movement to the end of the 100
spring shaft or carrier 75 and also to the
vertically disposed bar 74 connecting the
cranks 72 at the inner ends of the rock
shafts 71. The downward movement of the
bar 74 will, of course, be imparted directly 105
to the cranks 72 which will thereby rotate
the shafts 71 so that the presser fingers 65
will be turned to a position over the edges
of the several music sheets. As the down-
ward movement of the crank 82 continues, 110
the end of the same will be caused to swing
toward the rear of the apparatus and the
springs 90 and 79 will then exert their influ-
ence upon the bar 74- so as to slide the rock
shafts 7 rearwardr and, consernmently, 115
draw the presser fingers 75 against the
music sheets, thereby clamping the same to
the music stand. This position is shown in
Fi. 6. The several sheets may then be en-
(raged between the jaws 62 and 64 in the 120
manner previously described and when all
of the sheets have been so secured, with the
first page of the composition engaged by the
jaws hung upon the highest cantaliver, the
knob 66 is rotated in a direction opposite 125
to that previously given it. The parts con-
nected with the said knob will, of course,
be moved in the reverse directions to that
previously taken by them so that the presser
fingers will be lifted from the music and.1303
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Holcom, Jarret C. Leaf-Turner., patent, January 11, 1921; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1257247/m1/7/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.