US148151A - Improvement in music-leaf turners - Google Patents

Description

. swEATT.

Music-Leaf Turners.

No.l48,151. Patentedmarch3-1s14.

WITNESSES: l INV T03: j zu innig? Q, a 4 BY ATTGBNEYS.

instrument.

FFICE.

PATENT GEORGE SVEATT, OF LEBANON, NEWT HAMPSIHRE.

IMPROVEMENT IN MUSIC-LEAF TURNERS.

Siecieation forming part o1' Lters Patent No. 1118,15 l, dated March 3, 1%74; application tiled January 5,1874.

To alt @chem 'it may concern:

Be it known that I, GEORGE SWEATT, of Lebanon, in the county of Grafton and State of New Hampshire, have invented a new and Improved l\lusic-Turner, of which the follow ing is a specification:

My invention consists et' fingers,for turning the sheets, provided with a circular toothed base, and arranged, one above another, on a vertical pivot in a chamber, in or below the music-board, along which a toothed bar is made to slide ior throwing the iingers, said bar having a row of teeth for each iinger ar ranged to operate them successively. My invention also consists of foot-treadles, for sliding the toothed bar forward and backward with pulleys, to be turned by them, and cords connecting said pulleys with the bar to move it by being pressed on them, one treadle and pulley being to pull the bar to the right, for turning the leaves from right to left, and the other being to turn them back again, when it may be required to do so. My invention also consists ot' a musiciack, adjustable forward and backward, relatively to the fingers, for turning the leaves, and held up to them by springs, so that the leaves between are always held in the proper relation to the tin gers whether the book be thick or thin.

Figure l is a front elevation of a music-rest and rack of a piano or organ, also a side elevation of one of the treadlemotions, and a sectional elevation of the other, contrived according to my invention. Fig. 2 is a section oil Fie'. l on the line x Fig. 3 is a side elevation of the toothed rack for actuating the iingers. Fio. lis a plan of the music-rest inverted, and Fig. 5 is a longitudinal section of Fig. t on the line y y.

Similar letters of reference indicate correspending parts.

A represents the music beard or rest of the lt has a senziicircular cavity or chamber, B, in the under side, at the outer edge of which is a slot, C, of the same form, extending up through the board to allow the lingers l) to extend up from said chamber, wherein they are mounted, by the horizontal toothed disks or wheels E, on the vertical pivot F, to be turned by the sliding toothed rack-bar G, arranged behind them in a lon gitudinal groove, H, in the said board, said bar having a series ot teeth, I, for each disk or wheel, which are, in diierent planes, corresponding to the wheels, which are placed one above another in the lengthwise direction ot' the bar, so as to turn the iingers in succession, beginning with the front iinger whichever way the bar may be moved. The bar has springs J on its side opposite to the teeth, which bear against the wall oi' the groove H to hold it in gear with the disks, and also to allow the bar to spring back a little for the last tooth et' each series to pass by the tooth of the pinion or disk with which it works, which, in order to be caught by the rack properly at the beh ginning or' the back motion, is required to be stopped a little before turning so far as to allow the last tooth on the bar to escape without springing back. Said springs, also other springs, K, on the other side of the bar, prevent it from rattling against the sides of the groove.' This bar is connected by a cord, L, at each end with a pulley, M, arranged along with the treadles or' the instrument, one on each side, and having a treadle, N, for turning it by pressing down on the radial points or tappets 0, when it is pressed down by the feet of the performer. These pulleys are of suitable size to turn, say, three iingers, D, by a halt-revolution, or thereabout, and they are weighted at P to cause them to turn down ai'- ter being raised a little by the upward move ment of the treadle, which throws them up in passing the tappets O, so that said tappets will be caught when the treadle goes down again. Said weight is only sufficient to turn the pulley till the cord is taut, but not to move the bar Gr. rlhe pulleys are held by a stop, Q, in the right position for the beginning, and they have a little frictioirspring, R, to prevent them from turning too readily. rlhe treadles are raised by a spring, S. rlhe iingers D extend horizontailyfrom their disk te the slot C, through which they pass vertically 5 their they incline outwardly from the axis, and upwardly i'o'r the most part of their length; and, iinally, a short distancefrom the end, turn up right, or nearly so. Their shape, above the music-rest A, is more advantageous, in respect ot' turning the leaves without folding, crump` ling, or breaking them, than straight ones are,

because by bearing on different parts of the leaves in different directions, the bend of the paper in one direction, caused by one part otl the linger, is stitlened by another bend, fornied by another part Crossing it, so that the leaves are inueh inore certain to be laid over sinooth and l'lat.

The plan can be extended by other bends of thelingers,but the shapeliere shownis thought to be sullieient.

The inusic-raek T is fixed with studs or pivets U in slotted stationary blocks Y, so that it, and its back support lV, can slide forward and backward, and springs X are arranged to push it forward against stops Y, so that it will be adjustable for thick or thin books. The board is provided with slots Z, to allow it to turn down frontwise past the fingers D for elosing the instrument-ease.

lhe illusie-ease inay be arranged perpendicular, or slightly inclined backward. ln the latter ease, the pivot l will probably be arranged parallel to it, and the bar inay be arranged in a plane at right angles to it; or it inay be horizontal and be beveled to lit the disks.

Having thus described iny invention, what Marat I cla-iin as new, and desire to secure by Letters Patent, is

l. In a music-lealx turner7 the turningiingers D, provided each with a toothed base, E, arranged in eo-operative relation to a sliding rack-bar, G, having its teethlloeated in groups above each other for successively operatin the turning-lingers, as herein shown and described.

2. The combination of the treadles N, pulleys M, and eords L with said toothed sliding' bar and the lingers, arranged as specified.

3. rl`he weighted lappet-pulley M, cord L, treadle N, and spring S, combined and arranged substantially as specilied.

-l-. The stops Q and triction-spring It, in combination with the weighted lappet-pulley M, treadle N, and cord L, substantially z s specified.

5. The niusie-rael; arranged to slide backward and t'orward relatively to the tingers l), and provided with springs t'or pressing it l'orward, substantially as speeilied.

\\"itnesses:

Janus G. Ticimon, J. E. Dnwnv.

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