Untitled record

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THE NORRIS PETERS CO . PHOTO-l ITHO.. WASHINGTON. 0. ·

ALVIN B. CLARK, OF RICHMOND, INDIANA.

Letters Patent No. 60,833, dated January 1, 1867.

APPARATUS FOR TURNING. THE LEAVES OF MUSIC.

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TO ALL WHOM IT MAY CONCERN:

Be it known that.I, Alvin B. Clark, of Richmond, in the county of Wayne, and State of Indiana, have invented a new and useful improvement in Apparatus for Turning the Leaves of Sheet Music: and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, makihg part of this specification, in which—

Figure 1 is a perspective view.

Figure 2, a plan.

Figure 3 is a side elevation of the pedal and connected levers.

Figure 4 is a vertical section of the same.

In all the figures I indicate identical parts by the same letters.

My improvement consists in the employment of a magnet attached to a swinging arm, for turning the leaves, which have clips attached to them adhering to the magnet. Also in the arrangement of the mechanism operating the swinging arm. Also, in attaching the clips to a semicircular guide, so arranged that the arm, in swinging, shall detach the magnet from the clips when the leaves are turned.

A is the music stand, upon which is placed the music book. I attach clips, B, to as many leaves as are designed to be turned. These clips have jaws, the front one of which must be formed of iron or steel. The rear one is a spring which, pressing against the back of the leaf, holds the clip on the corner of the leaf. The upper part of the clip is an eye, through which passes the semicircular rod 0, attached to the music stand or rack A. The length of the iron part of the clip should be at least equal to the length of the diameter of the point of the horse-shoe magnet D, which will attract the clip and cause it to adhere to the poles of the magnet. The magnet is suspended upon a vertical rod, E, adjustably attached to the horizontal arm F, which is, in like manner, adjustably connected with the vertical shaft G, the bearings of which are in the standard G'. This shaft G is caused to revolve half round by mechanism which may be variously arranged, according to the circumstances, one arrangement of which I will describe.

The shaft G has on its lower end a pinion, G', working into the cogs upon the rack H, which is connected by the pitman H'with the arm I', upon the counter-shaft I, another arm, I”, of which is connected by the bar K' with the cross-lever K, which is forced downward by the spring K, and may be raised by the pedal L. By the movement of the lever K, the rack H receives a reciprocating motion, turning the pinion and shaft G one-half round, and swinging with it the oscillating arm F, and magnet D, which, adhering to the clip, will carry with it the leaf of music. The semicircular rod C is so placed that the end towards which the leaf is turned shall be further from the shaft G than the end on which the clips are placed in the first instance; consequently, as the magnet carries over the leaf, it is drawn across the clip and becomes detached when the leaf is fully turned. This motion should be made by a quick action upon the pedal. When the foot is taken from the pedal, the force of the spring K'' carries back the magnet, which instantly adheres to the next clip, and so the leaves may be turned in succession.