US288966A

US288966A - Island

Info

Publication number: US288966A
Authority: US
Publication date: 1883-11-27
Anticipated expiration: 1900-11-27

Description

(No Model.)

W. J. ARNOLD.

MUSIC LEAF TURNER.

No. 288,966. Patented Nov. 27, 1883 55716 S 5 e5 .[7ZU67ZZOT UNITED STATES PATENT Orricn.

XVILLTAM .l. ARNOLD, OF PROVIDEXf E, RHODE ISLAXD.

MUSIC-LEAF TURNER.

SPECIFICATION forming part of Letters Patent No. 288,986, dated November 27, 1883,

Application filed March 26, 1583.

(No model.)

To all whom, it may concern:

Be it known that I, \VILLIAM J. ARNOLD, of the city and county of Providence, and State of Rhode Island, have invented certain new and useful Improvements in Apparatus for Turning the Leaves of Sheet-Music, of which the following is a full and correct description, reference being had to the accompanying drawings, forming a part of this specification.

The object of my invention is to construct an apparatus by means of which a musical performer can turn over the leaves of his music without interrupting his playing by requiring the use of his hands or feet to operate it. This is accomplished by means of the mechanism illustrated in the accompanying drawings, in which- Figure 1 shows a front elevation of the ap paratus. Fig. 2 is a top view of the same with a part of the frame removed. Fig. 3 is a side View from the right of Fig. 1, also having a part of the frame removed to show the mechanism.

The frame A is made of sheet-brass or other metal in the way that frames for clock-works are usually made.

B is an escapenientwheel, which is made to turn freely on its shaft, which has bearings in the two sides of the frame.

a is a clock-spring placed on the same shaft, the inner end of the spring being made fast to the shaft, and the outer end attached to the wheel B. A ratchet-wheel, '2", is secured to the shaft, and a pawl, 02, pivoted to the frame, catches into the ratchet -wheel, so that the spring may be wound up, to give motion to the wheel B, by means of the key 0 on the outer end of the shaft.

3 and s are two levers that act together to form an escapement, though hung on separate pivots that pass through the upper part of the frame. A rod, 0', is hung so as to rock on the same pivot as s, and a small curved cross-lever on the foot of the rod 1' is so placed as to allow a small amount of motion to the rod before the cross-lever will touch the escapement s at either end.

One or more horizontal grooved pulleys, j, are held on a pivot between two ears on the left side of the frame A. The number of pulleys used may be varied, according to the number of leaves to be turned, by once setting the has one stud to each tooth.

arms 71, there being one pulley-arm to each leaf turned. These arms or rodsh are fastened at one end to the pulleys, and have at the other end a clasp, B, into which the leaf is inserted. Each pulley j is furnished with an elastic cord or spring, 6 0, one end of which is fastened to the side of the frame, and the other end is carried partly around the pulley in the groove and fastened near the end of the rod 71, so that when the rod h is swung around to the right the spring c will tend to draw it back to the left again. A notch is made in theperiphery of each pulley just back of the rods 71, into which the end of the catch-levers I enter, so as to hold the rods 71 when carried around to the right, there being one catch-lever for each pulley, which catch-levers are held on a pivot between two ears attached to the frame. inner ends of these levers ZZare so placed that they shall be pushed back by the beveled ends of the studs 0 0 in the side of the wheel B in passing, and the bent ends of the levers thrown out of the notchesin the pulleys 7'. Light springs under the inner ends of levers throw them out, so as to make the other ends of the levers catch in the notches in the pulleys when the rods h are turned to the right. The studs 0 0 are arranged in the wheel B in accordance with the number of pulleys j that are used that is, if only one pulley is used, the wheel If there are two pulleys, the wheel will have a stud for each alternate tooth, and if three pulleys are used, there will be a stud for every third tooth in the wheel B, and so on for any number of pulleys. A fan, 2, which may be made of any shape or material preferred, is attached to the rod 1', with its broad side toward the front.

The operation is as follows: The spring a is wound up by the key 0, the rods h are swung to the right, so as to be held by the catches l in the pulleys notches, and the leaves to be turned are inserted in the clasps on the ends of rods hthe first leaf in the clasp 011 the top red, 71, and the other leaves in succession. When the performer wishes a leaf to be turned, by directing a slight puff of the breath against the fan i, it will fall back, and the rear end of the cross-lever on the foot of the rod 1', striking against the back end of lever s, will cause the front end to release one tooth of the wheel B. Then the tooth back of lever s strikes against The the lower end of that lever, and causes its other end to fly up against the back end of the lever s and throw its front end in to catch the neXt tooth, and also at the same time to throw the fan forward again by-the cross-lever 011 the rod 1'. The motion allowed between the cross-lever and lever 8 enables the fan 'to start easily and attain some momentum before moving the lever 8. While the tooth is passing the lever s, as just described, the stud 0 next above the lever Z will strike against the first lever with its beveled end and release its catch from the notch in the pulley j, when the pulley will be freeto be drawn around by the spring 0, car rying with it the rod h and the leaf in its clasp to the other side; and when the fan is again blown back, another tooth of the wheel B WILLIAMJ. ARNOLD.

Vitnesses:

STEPHEN C. ARNOLD, A. B. GLADDING.