US867056A - Music-leaf turner. - Google Patents

Description

No. 867,056. PATENTED SEPT. 24, 1907. H. & W. KUEHNLEIN.

MUSIC LEAF TURNER.

APPLICATION rmzn um. 24, 1906.

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No 867,056. PATENTBD SEPT. 24, 1907. H. a w. KUEHNLBIN.

MUSIC LEAF TURNER.

APPLIOATION rmm 1.24, 1006.

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23 A; 22 W Z/ .No 867,056. PATENTED SEPT. 24, 1907.

H. 6: W. KUEHNLEIN. v MUSIC LEAF TURNER.

APPLIOATIOX FILED up. 24. 1906.

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HARRY KUEHNLEIN AND WILLIAM KUEHNLEIN, OF PHILADELPHlA, PENNSYLVANIA.

MUSIC-LEAF TURNER.

Specification of Letters Patent.

Patented Sept. 24, 1907.

Application filed January 24. 1906. Serial No. 297,622.

To all whom it may concern:

Be it known that we, HARRY KUEHNLEIN and WILLIAM KUEHNLEIN, citizens of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements in MusieLeaf Turners, of which the following is a specification.

This invention relates to music leaf turners, the object of the invention being to provide a simple, economical and reliable leaf turning device applicable to any musical instrument and adapted to be detachably connected thereto, so that it may be removed from the instrument when not in use, to allow the cover of the instrument to be closed.

A further object of the invention is to provide means whereby the leaf turning mechanism may be tripped step by step, provision being made at the same time for reversing the leaves or sheets or, in other words, turning the same back.

With the above and other objects in view, the nature of which will more fully appear as the description proceeds, the invention consists in the novel construction, combination and arrangement of parts, hereinafter more fully described, illustrated and claimed.

in the accompanying drawings, Figure 1 is a front elevation of a music leaf turner embodying the present invention and shown applied to a musical instrument. Fig. 2 is a side or edge elevation of the same. Fig. 3 is an enlarged vertical section, showing the center post and the actuating means for the leaf turning arms. Fig. 4 is a sectional plan view, showing the base plate and the actuating and reversing mechanism for the leaf turning arms also part of the tripping mechanism. Fig. 5 is a plan view of the bed-plate with its coupling lever, etc. Fig. 6 is a horizontal section through the book-holding clasp. Fig. '7 is a vertical section through one of the leaf holding clips. Fig. 8 is a top plan view of the same, showing a portion of one of the leaf turning arms. Fig. 9 is a horizontal section through one of the leaf holding clips.

The music leaf turner contemplated in this invention comprises a bed-plate 1 of any suitable size, provided with holes 2 to receive screws or other fasteners, whereby said plate may be permanently secured to the frame of a piano or other musical instrument to receive the main body of the music leaf turner which is detachable from said bed-plate.

Centrally pivoted at 3 on the base-plate 10 is a coupling or locking lever 4 having the oppositely projecting arms 5 which are adapted to engage beneath lugs or keepers G of the bed-plate, the said lever being held normally in engagement with said lugs or keepers by means of a lever holding spring 11 interposed between a lug 12 on the bed-plate and a shoulder 13 on the lever t, as shown in Fig. 5. The spring 11 permits said lever to be rocked for the purpose of disengaging the same from the several lugs and keepers, thereby allowing the leaf turner proper to be disconnected from the bed-plate.

Extending upward from the base-plate 10 is a center post 14 provided in one side with a groove 15, extending lengthwise thereof, the purpose of which will hereinafter appear. Journaled upon said center post 14 is a plurality of pinions 16, each of which carries a leaf turning arm 17 rigidly connected therewith and adapted to turn when the pinion is turned. It is necessary to swing each of the leaf turning arms through an arc of one hundred and eighty degrees, more or less, in order to turn the sheet of music or page of a book of music, as the case may be.

Each of the arms 17 is provided at its outer free end with a leaf holding clip 18 adapted to grasp the lower edge of leaf or sheet of music and to swing the same through an arc of one hundred and eighty degrees, as illustrated in Fig. 1. The arms 17 are arranged out of horizontal alinement or one above the other, so as not to interfere with each other as they are swung from one side to the other.

The mechanism for swinging the leaf turning arms is best illustrated in Fig. 3, in which it will be seen that each of the pinions 16 is in the form of a cylindrical shell surrounding the center post 14. Within the top and bottom planes of each pinion 16, the post 14 is reduced, as shown at 19, to form a space for a pinion actuating spring 20 which encirles the reduced portion of the post and has one extremity bent inward diametrically and inserted in the groove 15, the other end of the spring being inserted in a socket or opening 21 in the side wall of the opening, as shown in Fig. The pinions with their actuating springs are arranged one upon the other, as shown in Fig. 3 and are held in place on the post by means of a cap 22 which is, in turn, held in place by a cap retaining screw 23. The pinions are free to turn on the post 14, but are held in a certain position by the springs 20, in which position the leaf turning arms are held at the farther limit of their swinging movement. In order to hold the leaf turning arms at the initial end of their swinging movement, each of the pinions is provided with a laterally projecting finger 24, the extremity of which is received in a socket or opening 25 in the upper inclined face of a catch 26, it being understood that each pinion is provided with a finger, and that a catch is provided to engage and hold and trip each finger, as shown in Figs. 1 and 2.

Each catch 26 is pivotally mounted on a short horizontal shaft 27 and is upheld by means of a spring 28 which encircles the shaft 27, one arm of the spring ongaging the catch, while the other arm of the spring engages a fixed bracket or stand 29, upon which all of the catches 26 are pivotally mounted, as shown in Figs. 1, 2 and 4. Extending forward from each catch 26 is a trip lever 30, said levers being arranged within convenient reach of the player, who, by depressing said levers successively, may trip the leaf turning arms one after another, thereby allowing the leaf turning arms to be moved one at a time by their actuating means from one limit of movement to the other. I

At one side of the center post 14 is arranged a vertical spindle 31 upon which are journaled reversing gears 32 corresponding in number to the number of pinions 16. Each of said reversing gears 32 is provided with a reversing lever 33 to enable the operator to partially rotate any desired reversing gear and impart a reverse movement to the corresponding pinion with which it meshes, for the purpose of turning any particular sheet or leaf of music back to its primary position.

Extending upward from the base-plate in rear of the center post 14 is a fixed standard 34 connected permanently to the base-plate and forming the hinge post for a pair of substantially semi-circular clasp members 35, the latter being adapted to grip the backbone of a book between them. The clasp members 35 are provided at the rear with knuckles 36 arranged in alternate order and receiving the hinge post or standard 34, while the forward meeting edges of said clasp members are held toward or in actual contact with each other by means of one or more springs 37 coiled to encircle the hinge post 34 and having the opposite arms thereof bearing against the rear sides of the clasp members to urge the forward ends thereof toward each other. The clasp members are also provided with arms 38 forming finger pieces or levers which extend laterally outward from the clasp and are arranged side by side, so that by pressing said clasp arms toward each other, the jaws or members of the clasp may be opened to admit the backbone of a book or the inner fold or edges of sheet music, as the case may be.

p 39 and 40 designate stops shown in the form of vertically extending rods arranged at opposite ends of the base-plate and extending upward behind the limits of movement of the leaf-turning arms 17, so as to properly position said arms at the terminals of their throw, as

shown in Fig. 1.

Each of the leaf holding clips comprises a pair of levers 41 having inwardly extending lugs 42 provided with openings through which the leaf turning arm 17 passes, said leversbeing thus fulcrumed on the leaf turning arm. At one end the levers 41 are provided with jaws 43 and 44, preferably formed of thin sheet metal and slightly crimped or deflected, as shown at .45, but maintained in parallel relation to each other, so as to impart a slight crimp or bend of the sheet or leaf held between them for the purpose of giving stability to said leaf and preventing the same from drooping or folding over at either limit of its movement or between such limits. At the opposite end the levers are extended to form finger pieces 46 arranged substantially parallel to each other, as shown in Fig. 7. By pressing the finger pieces 46 toward each other, the operator may open the jaws 43 and 44 to insert or remove the lower edge of the music sheet. The jaws 43 are pressed firmly together by means of a jaw-holding spring 47 which encircles the leaf turning arm 17 and has its extremities in engagement with the lugs 42 of the levers 41, as shown in Fig. 9. Each of the leaf-turning arms is provided with a bail-shaped stop 48 connected rigidly thereto and extending upwardly therefrom, the body portion of the stop being arranged parallel to the body of the leaf-turning arm andserving to position the music clasping arms in a substantially vertical position. It will, of course, be understood that each of the leaf turning arms is provided with one of such leaf holding clips, as illustrated in Fig. 1. It will also be understood that any desired number of leaf turning arms may be employed and the controlling mechanisms for such arms correspondingly increased or diminished to agree with the number of leaf turning arms.

We claim:

1. A music leaf turner provided with 'means for connecting the same to a musical instrument, an upstanding post provided with a series of grooves, a plurality of leafturning arms, a series of hollow pinions carrying said arms and journaled on said post, an actuating spring for each pinion, said springs being inclosed within the grooves and surrounding the reduced portions formed by the grooves, a reversing gear associated with each pinion, a projecting finger on each pinion, and an inclined and socketed catch for engaging and releasing each finger.

2. A music leaf turner, comprising a base-plate adapted forfastening to a musical instrument, an upstanding post thereon having spring receiving grooves, a plurality of leaf turning arms, a vertical series of pinions to which said arms are connected journaled around said post, actuating springs each housed within one of said pinions and lying within one of the grooves of the post and connecting one of said pinions to the post, a reversing gear associated with each pinion, a projecting finger on each pinion, and a series of catches provided with lever arms arranged successively one above the other, each of said catches being provided with an inclined surface and a socket or opening to receive the finger of its respective pinion.

3. A music leaf turner comprising a plurality of leaf turning .arms and a series of leaf holding clips mounted on said arms and said arms forming the pivotal bearings for the clip members, each of said clips embodying a pair of oppositely arranged leaf holding jaws having finger extensions for opening said jaws, a spring for holding the jaws toward each other, and a bail shaped stop connected to each leaf turning arm and adapted to position said jaws.

4. A music leaf turner comprising a plurality of leaf turning arms, and a series of leaf holding clips carried by said arms and said arms forming the pivotal bearings for the clip members and each of said clips embodying a pair of lever arms journaled on the leaf turning arms and provided at one end with finger pieces for rocking the levers and at the other end with leaf holding jaws which are crimped to the sheet held thereby, a bail-shaped stop connected to each leaf turning arm to position said jaws and means for holding said jaws toward each other with a yielding pressure.

5. In a music leaf turner, a plurality of leaf turning arms and a leaf holding clip carried by each of said arms and said arms forming the pivotal bearings for the clip members, said clips each comprising a pair of lever arms journaled on the leaf turning arms and provided at one end with finger pieces for rocking said lever, and at the other end with leaf holding jaws, said jaws being deflected or crimped, a bail-shaped stop connected to each of said leaf turning arms to position said jaws and means for holding said jaws toward each other with a yielding pressure.

In testimony whereof, we aifix our signatures in presence of two witnesses.

HARRY KUEHNLEIN. WILLIAM KUEHNLEIN.

Witnesses:

WM. D. Nuns, Gnome C. Snnnrz.

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