US425178A - Music-leaf turner - Google Patents

Description

/N VEA/fof? 5@ ATTORNEYS Patented Apr. 8, 1890.

(No Model.)

P. JUNG. MUSIC LEAP TURNER.

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UNITED STATES PATENT OEEICE.

PETER JUNG, OF IERIIAM, MINNESOTA.

MUSIC-LEAF TURNER.

SPECIFICATION forming part Of Letters Patent No. 425,178, dated April 8, 1890. Application tiled October 29, 1889. Serial No. 328,531` (No model.)

To all whom it may concern:

Be it known that I, PETER JUNG, of Ierham, in the county of Otter Tail and State of Minnesota, have invented a new and Improved Music-Leaf Turner, of which the vfollowin g is a full, clear, and exact description.

The'object of the invention is to provide a new and improved music-leaf turner which is simple and durable in construction, can be easily and quickly adjusted or set, and conveniently operated by a slight touch of the ringer.

The invention consists of certain parts and details and combinations of the same, as will be hereinafter fully described, and then point-ed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding1 parts in all the iigures.

Figure l is a perspective view of the improvement. Fig. 2 is an enlarged front view of the locking and releasing device. Fig. 33 is a sectional side elevation of the same, and Fig. 4 is a similar view of the same in a different position.

The improved music-leaf turnerA is mounted on the usual music stand or back B, provided with an offset 0,011 which rests the lower end of the book or leaves to be turned. In the middle of the offset O is pivoted a rod I), extending upward and adapted to engage a hook E, secured on the upper end of the back B. This rod D serves to hold the book or loose sheets ot music in place on the back.

On the back B, near its lower end, are secured the bearings F, in which are mounted a series of rods G, placed parallel with each other, as shown in Fig. l. On the upper end .of each rod G is secured an arm` Il, extending at right angles to the rod G and provided with a bend II', to which is connected one end of a spring I, coiled on the upper end of the respective rod G, and secured by its other end on the back B.

On the outer end of each arm IiI is secured an upwardly-extending arm J, adapted to engage the under side of the leaf to be turned, The said arm projects above the offset (l, so as to conveniently engage the respective leaf to be turned. Each of the arms II is guided,

when in said position, in a notched bracket II, secured to the back B on the right side of the same. Near this bracket K is arranged the locking and releasing device L, provided with the casing N, secured on the back l, and in which is mounted to slide a bolt O, extending through the easing N at each end. The upper end O ofthe bolt is adapted to pass over the series of arms II when the latter' are moved into a right-l1and position, and the said end O is adapted to release the arms successively, so that the latter swing by the action of the springs I into their left normal position, so as to carry along the leaves, the backs of which they engage.

The bolt O is provided near its lower end with anumber o't' notches O2, placed equal distances apart and adapted to be engaged by an end P" of a iiat spring I), secured on a lingen piece Q, projecting througha slot N in the casing N. The finger-piece Q also supports a back plate Q,restin g on top of the spring I), and a coil-spring R is adapted to press against said back plate Q', so as to hold the fingerpiece Q in an uppermost positionwthat is, at the upper end ot' the slot N. On the top ot' the bolt O is held to slide a locking-plate S, on which rests the upper end I32 of the spring I), said locking-plate projecting through the upper end olf the casing, and being provided on its outer end with au offset or flange adapted to be grasped by the operator to slide the locking-plate outward. On the lower end et the bolt O is termed a handle O3, for conveniently moving the bolt whenever necessary, and near the upper end O of the bolt is formed a shoulder Oi, against which is adapted to abut a [lange S et the lockingplate The operation as follows: When the rod D is disengaged Vfrom its hook E, the bock or a number et leaves are placed on the back B, resting with their lower edges on the ot't'set O. The rod D is then passed through the middleot the open book or leaves and fastened at its upper end to the hook E. The

several leaves to be turned are placed successivclybetween the arms J ,and then the latter are all swung to the right against thc tension of the springs I, and there locked in placeby the upper end O et the bolt O passing over IOO the said arms H. The bolt O is manipulated in the following manner: In order to move the bolt upward, so that its upper end O passes over the several arms Il, it is necessary that the operator should press the locking-plate S into the position shown in Fig. 3, so that the lowerl end of the said locking-plate S engages the end P of the spring P, thus lifting the said end P out of contact with one of the notches O2 of the bolt O, so that the latter can be shoved upward by the operator pressing` on the llange or handle O3. Then the bolt is in its uppermost position, as shown in Fig. 4, the operator grasps the flangeS of the locking-plate and pulls the latter outward untilthe flange S rests against the shoulder OL of the bolt O. By the outward movement of the locking-plate S the lower end P of the spring P engages the lower-most one of the notches O2. When the operator now desires to turn the lirst leaf, he simply presses the linger-piece Q downward againstthe tension of the spring R, whereby the spring P with its end P moves the bolt O downward a distance equal to the space between two teeth, which distance corresponds to the length of the slot N. This movement of the bolt O releases the uppermost arm Il, so that the spring I of the latter swings the arm ll to the left, carrying the leaf along with it. As soon as the operator releases the pressure on the linger-piece Q, the latter is moved backward in its normal uppermost position by the spring R. This upward movement of the finger-piece Q carries along the spring` P, so that the next following one of the notches O2 is engaged. The above-described operation is then repeated successively until all the arms II have swung to the left.

It is to be understood that the arms H are placed one above the other a distance correspending to the distance between the teeth on the bolt O. Thus it will be seen that the de- Vice is Very simple and durable in construction and can easily and quickly be set and conveniently operated by a slight touch of the linger.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patentl. In a music-leaf turner, the combination,

with spring-pressed arms mounted to swing, of a locking and releasing mechanism to lock and release successively the said arms, comprising a notched bolt mounted to slide over the said arms, a finger-piece for operating the said bolt, and a flat spring held on the said 1in ger-piece and adapted to engage at one end the said notched bolt, substantially as shown and described.

2. In a music-leaf turner, the combination, with spring-pressed arms mounted toswing, of a locking and releasing mechanism to lock and release successively the said arms and comprising a notched bolt mounted to slide over the said arms, a linger-piece Alor operating the said bolt, a itlat spring held on the said finger-piece and adapted to engage at one end the said notched bolt, and a second spring pressing on the said finger-piece, substal'xtially as shown and described.

In a music-leaf turner, the combination, with spring-pressed arms mounted to swing, of a locking and releasing mechanism to lock and release successively the said arms and comprising a notched bolt mounted to slide over the said arms, a finger-piece Afor operating the said bolt, a tlatsprin g held on the said linger-piece and adapted to engage at one end the said notched bolt, a second spring pressing on the saidlinger-piece, and a lockingplate held to slide on the said bolt and adapted to be engaged by the ends of the said l'lat spring, substantially as shown and described.

el. In a music-leaf turner, the conlbination, with a notched bolt mounted to slide in a casin g, of a flat spring adapted to engage the said notched bolt, and a spring-pressed lin ger-pieee for moving the said spring, substantially as shown and described. v

5. In a music-leaf turner, the combination, with a notched bolt mounted to slide in acasin g, of a flat spring adapted to engage the said notched bolt, a spring-pressed linger-piece for moving the said spring, and a locking-plate i nterpo'sed between the said spring and the said bolt, substantially as shown and described.

VitneSses:

R. J. J UNG, JOHN JUNG, Jr.

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