US1595220A - Music-leaf turner - Google Patents

Description

Aug. l() 1926.

C. F. BAER MUSIC LEAF TURNER Filed Sept. l-l, 1924 2 Shoots-Sheet 1 Aug. 1o, 1926. 1,595,220

C. F. BAER MUSIC LEAF TURNER Filed Sept. 11, 1924 2 sheets-sheet 2 Patented Aug. l0, 1926.

UNITED STATES K CLARENCE F.-BAER, F SHIQKSHINNY, PENNSYLVANIA.

MUSIC-LEAF TURNER.

Application sled `septemlm 11, 1924. seriai No. 737,120.

This invention relates to music leaf turners especially adapted to be used upon piano and organ cases, and it consists inthe novel feature hereinafter described 'and claimed.-

t An object of the inventionlis toprovide a music leaf turning mechanism of simple structure adapted to be operated by a foot pedal and whichincludes means for engagmg and turning the leaves successively, and l w ien the leaves are supported upon the disc l lVith this object in view, the music leaf turner comprises a frame adapted to be applied to the disc of the instrument casin A shaft is journalled upon the frame, an a series of arms is loosely mounted upon the shaft. Each of the said arms is provided with crim s adapted to engage the music leaves. A racket arm is fixed to the shaft and carries a head providedv with a pawl adapted to engage lugs mounted upon 'the first. mentioned arms, whereby the loose arms are temporarily ixedwith relation to the shaft, 'and will turn with the shaft when the shaftk .is turned. release arm is 'mounted upon the frame, and is located in the path of movement of a pin which is carried by the pawl, and when the said pin rides upon the shunt arm, the pawl is moved out `of en agement with the lug which is xedto t e arm, and which is loose upon the shaft. The device also includes a foot pedal, there being means operatively connected with the said foot pedal, and the shaft whereb the said shaft is turned when the pedal is epressed. Means are provided for returning the shaft when the pedal is released In the accompanying drawings:

Figure 1 is a front elevation of a piano casing, with the music leaf turner applied thereto.

Figure 2 is an enlarged fragmentary horizontal sectional view through the disc panel of the instrument casing, and showing the music leaf turner in top plan.

Figure 3 is a fragmentary vertical sectional view of the lower portion ofthe instrument casing, showing the pedal. mechaf1* nism for operating the music leaf turner in side elevation.

Figure 4 is a perspective view of the outer end portion of the bracket arm of the music leaf turner, showing the head 0 mounted thereon, and the paWl which is pivoted upon vthe head.

In the accompanying drawing, the piano or organ casing is indicated at 1, and the said casing .is provided with the usual pivoted disc panel 2. A frame is mounted upon the outcr surface of the disc panel 2, and is provided withv a ledge 4, upon which the lower edges of the sheets of music not shown) may rest. A release arm 5 is mounted upon the upper portion of the frame Land the said arm is providedwith a forwardly and downardly inclined end portion having a lug 7 mounted thereon and spaced from the end edge thereof. A shaft 8 isjournalled upon the frame 3, and a bracket arm 9 is fixed to the said shaft. A head plate 10 vis fixed to the outer free end of the bracket arm 9 and is provided with a ledge portion 11, a pawl 12 is pivoted upon the head plate 10, and the lower edge thereof is normally held in contact with the upper surface of the ledge 11, by a spring 13, which is connected at one end with an angularly disposed end portion 14, of the pawl, and connected at its other end with an upstanding arm 15 provided at the upper edge of the head plate 10. The pawl 12 is provided with a chamtered end 1G.; and said pawl is provided at its lower edge portion with a notch or recess 17. The free end of the pawl 12 is pointed, and the 'free end portion thereof is provided` with an outstanding end 18. A series of arms 19 is loosely mounted upon the shaft 8, one upon the other. and each arm is provided with a pair of clips 20, adapted to engage the upf per edge portion of the sheet of music. Each arm 19 is provided at the point between its ends with a lug 2l and the lugs 21 have angularly disposed end portions as best shown in Figure 4 of the drawing. The upper end portions of the lugs 2l are adapted to be received respectively in the recess 17 of the pawls 12, as the arm 9 and head plate 10 are turned or moved, as hereinafter explained.

I A gear wheel 22 is fixed to the upper portion of the shaft 8, and meshes with the teeth of the gear segment 23, which is fixed to the upper end portion of the shaft 24, the said shaft 24 being journalled at the back of the disc panel 2, and the segment 23 passing through the said panel as best shown in Figure 2 of the drawings. rljhe shaft 24 is provided, at its lower end with a crank A shaft 26 is journalled in the casing `l, and is provided .at its upper end vith a crank 2?. A rod 28 is pivoted at the pavl 12, t .vill be seen that, when the one enr to the tree end ot the crank pedal is depressed, the arm 19 is swung and pivoted at its other end to the free with the arm 9, so that the pawl 12 is moved end of the crank fr gear Wheel 29 is toward the release arm 5. As the pawl 12 mounted upon the intermediate portion or approaches the release arm', the pin 18 rides tire shaft 26. A aedal 30 is riveted upon up over the surface of the end portion 6 i bracket 31, 1which is located Within the et' the arm, and the side edges of the recess easing 1 and one end of the said pedal 1T are lifted above the upper angularly disaasses through the front of the casing, best hewn in Figure 3 ot the drawing. n spring 32 is connected at one end with Yhe casing, and at its other end with the ntermediate portion ot the pedal 30. A spring 233 is located in the casing 1, below the pedal 30, and serves as means for cushinning` the downwar'i movement oi the pedal 99, when the same is depressed b v using the toot. rthe pedal 31 1s provided at rs inner end With an upstanding arm carrying a gear segment 35, the teeth oit vfnieh mesh vfith the gear Wheel hereinbetore described.

From the above description, it will be apparent that when the pedal 30 is depressed, the gear segment is moved transversely of the shaft 2P, and inasmuch as the teeth ft' the segment 35 are in mesh with the eefh of the gear Wheel 29, the shaft 25 r ed or rota-ted.

is As the said shaft 26 is nef., the cranl; arm 2? moves the bar or d 29 longitudinally, whereby the shai't is turned. In that the gear segment 29, vrheh is mounted upon the shaft 2 meshes f gear Wheel 22 mounted upon the 8, the shaft 9 is turned. Vhen the rned, the arm 9 is swung in one )is seen as pressure is released e lal 39, the tension oit the spring s 'nto play, and the pedal 30 is ove;VL in an upvvarl airection, and the morement or' the connecting parts between the pedal 30 and tae arm 9 are reversed, so that the arm issuung in an opposite dit' or returned to its normal position.

si ion or the arm 9, and that the lug 21 o1 the outer arm 19 1s m the recess 17 ot posed extremity o1 the lug 20. rThus, t-he arm 19 is truned, and at the end of its tur ing movement, the lug` 21 carried thereby is released from the pawl 12. Vhen 'the pin 18 strikes the lug 7, the arm 9 comes to a state ot rest. rt this time the pressure 1s released from the edal, and the head plete 10 which is carried at the outer l tne arm 9, is swung away from the e ar .i V, by spring 32 actuating pedal heretotore indicated and the chamtered ends 16 et the pawl 12 engage the a gularly diepe-sed extremity of the lug 2l upon the next arm 19 so that said paWl is l" te allow said lug to engage in the `recess 17.

TWhat is claimed is:

j; music leat' turner including a frame, a release arm mounted on the iframe and provided vith an upstanding lug, a shaft journaled upon the frame, means for turning and ietu.rning` the shaft, a bracket arm iixed to the shaft, a head pla-te carried by the bracket arm and provided with ledge plate, a pawvl pivotea upon the head plate and provided with a notched edge, spring means for hol-l the notched edge ot' the pavvl in cont c with the ledge plate, a pin extending Afrom the lree end of the paWl, the lug upon the release arm being disposed in the path o'f movement of the pawl, as the bracket arm moves toward the release arm,

music leat supporting arm rotatable independentlyv ot' the shaft, and a lug on thc music leal1 carrying arm' having it-s upper portion in the path of movement ot the pawvl so as to be engaged thereby.

ln testimony whereof l atlix my signature.

CLARENCE F. BAER.

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