US1125250A - Music-leaf turner. - Google Patents

Description

F. ARGHIBALD.

MUSIC LEAF TURNER.

APPLICATION FILED 11110.12, 1.912.

Patented Jan. '19, 1915.

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awe/whom l v i/wcmo F. ARGHIBALD.

MUSIC LEAP TURNER. V AYPLIUATION FILED DEO.12,1912.

1,125,250. Patented Jan. 19, 1915.

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' Applicationflled December 12 To all whom it may cohccm:

Be it lmown that I, FREDERICK Anom- BALD, a citizen of the United States, residin at Virginia in the county of St. Louis an State of Minnesota, have invented certain new and useful Improvements in Music- Leaf Turners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains'to make and use the same.

This invention relates to music leaf turn ers, and it more particularly relates to an form of pedaloperated leaf turner.

An object of the invention is to provide a device of this character which may he employed on planes and organs of various kindsfand adjustably fitted thereto. 7

Another object of the invention is to provide improved means, whereby the music leaves may beturned alternately back and forth by mechanism connected with a suitable pedal.

Another object of the'invention is to provide for turning any number of leaves from one to four, and then turning the leaves back into their normal positions. h Another object of the invention is to provide a device of this character which is com-' compact, economical, and thoroughly efficient in op eration. I

Other objects and advantages may be recited hereinafter andin the claims.

In the accompanying drawings, which supplement this specification, Figure 1 is a front elevation view of my improved leaf' turner supporting a piece of music. Fig. 2 is a rear elevation View, illustratingthe op crating mechanism. Fig. 3 is a fragmental sectional view taken on the line 3-3 of Fig. 2. Fig. 4 is a detail view, in perspective, of one of the jointed levers. Fig. 5 is a vertical sectional view through one of the jointed le.- vers and its adjuncts. Fig. 6 is a fragmental perspective view of the vertical slide beam or carriage and certain of its adjuncts, and, Fig. 7 is a fragmental detail View of the double-acting catch or slide-bar-engaging element.

Referring to these drawings, in which similar reference characters designate corresponding parts throughout the, several views, the base or frame 10 is forme d from a plate of metal or other suitable n 1 1 tgr ;i gal.

Specification of Letters Patent.

. Patented Jan. 19, 1915.

This plate 10 is rovided with a ertures 11 through which t h p portmg bracket 12 extend, the lower portion of said bracket being covered with felt, rubber or other soft and pliable material, so that the piano or organ will not be scratched or marred thereby when in operative positlon, as shownin Fig. 3.

A fender 14 is secured on the bracket 12, said fender being covered with the same kind of material as that which constitutes the element 13. 4 Buttons 15 are pivoted at 16, to the base plate 10, said buttons being provided with lever arms 17 alternately turned into, and out of engagement with the bracket 12, so that the same may he removed from one pair of holes and placed in another pair, for adjusting the positlon of the bracket with relation to the ease plate. 7

Formed atthe upper end of and preferably struck up therefrom, are oppos1tely disposed pairs of apertured lugs 18, and through the apertures of these lugs extend the parallel end portions of a rest bracket 19, the intermediate and top 1912; Serial No.

the; plate 10,

por-

e curved ends of asupby which the buttons may be tionsof said bracket being covered with felt point "thereof being indicated at 26.

'Pivoted at 27, on the end of the beam 25 1s a shifter plate 28 having an arcuate slot 29 therein, for receiving a headed stud, 30

On a laterally-extending arm or plate 31 is secured'a coiled spring 32, connecting with a link 33 which is pivotally connected at 34 with the plate 28; the function of the spring 32 being to retain the plate 28 in ge 24 is held normally 7 which extends rearwardly fromthe beam 25.

' Each slide bar 42 is provided I extensions 42 and 42, the latter being apertured for the reception of a thin stiip 38, of steel or other suitable metal, which extends downward between the keys of the piano and through a suitable aperture therebeneath (not shown), whence it may connect with any suitable form of pedal, whereby it may be drawn downward, so as to draw ward extension 23 serving to guide the carriage" in its vertical reciprocations.

Adjacent to the upper end of the beam 25 is a rearwardly extendingstud 40, and at the end of said beam 25 is pivoted the double-toothed catch 41, which is adapted to freely oscillate laterally of the beam 25. At opposite sides of the a series of guide apertures formed in the guide members 39, and within these gu de apertures are slidably seated pa1rs of slide bars 42, each pair of slide bars being connected to the; opposite ends of a lever or bellcrank, through the medium of links 43. The bell cranks 44 and 45 arepivoted at 46 and 47, respectively, to the base plate 10. with rearward adapted for engagementby the catch 41. The lower ends of the slide bars 42 extend under a uide plate 39', which constitutes a part'of tie guide member The upper middle portion of the base plate 10. isprovided ,with an aperture 48 in hich is seated a'number of plates or tables 49, said tables extending laterally beyond the aperture 48, and being fixedly secured to the base plate by means of'vertical securing bars 50. The plates 49 are equally spaced apart, and provided with fixed studs 51 over which work a series of jointed levers, each consisting of a lever member 52 and a second lever member 53, the lever members being pivoted together by means of pivots 54. One end of the member 52 is slotted, at 52 for receiving the fixed stud 51. Loosely connected to the rearwardly extending end of each member 53 is one end of a link55,

the other end thereof being loosely connected, at 56, to one of'the bellcrank levers 44 or 45; it being understood that, there is a link 55 for each jointed lever and for each bell crank lever, A vertical pivot pin 57 extends through all of the tables or plates .49 and through all of the lever members 53,

so that all of the jointed levers are pivoted concentric with relation to each other, and their concentric axes are in fixed position relative to the base plate 10.

Each member 52 is provided with a longitudinal bore 52, a longitudinal slot 52 extension 24 is I communicating with the bore, and a recess 52 extending downwardly from the bore.

Seated in the bore 52' of each member 52 is one end of a leaf-engaging arm 58 hav- 7 ing a downwardly extending tongue 59 fitted in the recess 52*.

Each arm 58 is provided with a shoulder or spring seat 60, a sleeve 61 being seated against the member 52 and being slidably seated on the arm 58. A spring 62 surrounds each arm 58, between the shoulder 60 and sleeve 61; so that, by moving the arm 58 longitudinally in the direction of the member 52, the tongue 59 is moved out of engagement with the recess 52*, andmay be turned into the slot 52, so that it may be drawn through the slot, for allowing the arm 58 to be disconnected from the member 52.

Each arm 58, except the lower arm, is.

bent downward and thence extended latera1ly,,so that all of the arms 58 terminate or substantially the same horizontal plane, and on the end of each arm 58 is secured a suitable spring-actuated leaf-clamp 63, which may be of any suitable form and construction forsecurely holding the top portion of a music leaf, and therefore, there being a multiplicity of these clamps 63, a multiplieity of leaves may be turned separately and in succession. A member 63 is pivoted at and spring-actuated shifter lever consisting of a depending element 67 and an upwardly projecting stop element 68 having a cam surface 68 thereon, said stop element being pivoted at 69 to a lateral extension of theelement 67, and a compression spring 70 coacts with a lug 71 for retaining the element 68 in its normal position relative to the element 67. The lower edge portion of the base late 10 is provided with an arouate slot 2, having a series of recesses 73 communicating therewith, and a series of tongues 74 separating these recesses. The,

lower end of the member 67 extends forwardly through the slot 72, and thence upwardly, and is provided with a pair of parallel lugs 67', between which is pivoted a latch 75 having its pivot '7 6 adjacent to its upper end, and having a stud 77 extending rearwardly into one of the recesses 73, a spring 78 being provided on the member 67, in contact with the member 75, for retainingitin its normal closedposition, as

shown in Fig. 3. The lower end of the member 67 constitues other alternative position, in which the stud base plate 10, and is 41 downward; and,

30 willrest in the opposite end ofthe arouate slot 29, and the stud 34 will then be on the opposite side of the carriage 24 from,

its present position.

/ A setting lever 80 is pivoted at 81 to the provided with a stud 82, adapted to impinge upon the edge 28' of the plate 28, when the lower arm of the lever 80 is swung laterally. In order to swing the lever 80, a pull rod 83 is pivotally connected at 84 to the upper arm of the lever 80, and the rod 83 is extended downward and terminates ina forwardly extending finger piece or handle 88, which extends through a slot 85, in

the base plate. The lever 88 is pivotally connected at 86 with a spring 87, secured to theguide memberSQ,

and by means or" this spring, the lever 80 and pull rod 88 are returned to their normal positions, as shown; the rod 83 acting as a stop for the stud 82.

in operation, the operator pulls the. car riage. 24 downward, 88, as described, thereby drawing the catch said catch being in engagement with the arm 42 of the left-hand bar 42 (see Fig. 2),-this bar 42 is pulled downward so 'as to swing the bell crank 44 to which it is connected by one of the links 43, so that the other link 48, which is attached to the opposite arm of this bell crank and to the adjacent slide bar 42, draws this adjacent slide bar upward while the beam 25 goes downward, until the arm 42 of the upwardly moving slide bar is on a higher plane than the upper end of the beam 25, and the stud 40 clears the lower end of together with its clamp the adjacent tongue. 65, so that the beam 25 is drawn laterally, by means of the plate 28, link 38 and spring 32; so that the stud 40 now registers with the next succeeding slot 64, the movement of' the beam 25 having beenarrested in this position by means of the arm 42 of the contiguous bar 42 upon which it has impinged. Now, as the bell crank 44 was swung on its pivot, by the operation just described, the upper link 55 caused the upper jointed lever to swing on its pivot 57, thereby swinging the arm 58, 63 and the music leaf clamped thereby, through an angle of one hundred and eighty degrees. It will be noted that the member 53 is swung through a considerably less angle than one hundred and eighty degrees,

'tion at 51 and 52 1n the same-manner that thefirst 7 restedby the upper end by means of the strip pinged upon the arm 42 of said bar.

but the swing of the member 52 and arm 58 is increased by means of the leverage nection at 54 and the stud and slotconnec- (see Fig. 4). Referring to the preceding operations, wherein'the stud 40 is in registry with the second slot, it will be, seen that vupon allowing the carriage '24 to ascend, the stud 40 will move up into this second slot, and the catch gage with the arm 42 42; so that when the 41 will en: of the third slide bar carriage 24 and its adjuncts are again lowered, this third bar 42 will be engaged by the catch 41, so as to rock the bell crank 45 to which it is con- *nected; thereby actuating the second joint ed lever and turning the second music leaf, music leaf was turned. This operation continues until all of the slots 64 have been entered by the stud 40 and until all of the leaves have been turned, in which operation all of the bars 42 have been moved and all of the 'bell cranks have been swung on their pivots;

provided that there are just four music. leaves to be turned. It will be seen that as the upper end of the beam 25 swings rightward (see Fig. 2'), its lower end swings leftward, thereby-drawing the lower end of the plate 28 and its stud 79 leftward; so that, at this stage, when the carriage'24 is again drawn downward, the stud 79 will be arof the stop 68, and the plate 28 is thereby swung leftward on its pivot 27 until the stud 80 rests in the right-hand end of the slot 29. In swinging leftward, the plate 28 carries the rod 33 leftward beyond the pivot 27, so that the upper end of the beam 25 tends to move leftward, so that when the stud 40 is re,- leased from the right-hand slot 64, it moves into registry with the second slot 64 to the left, and is there arrested by the bar 42 immediately to the left thereof, havingDimurlng-this rightward movement, the beam 25 and its adjuncts have pulled each alternate, slide bar 42 downward, and thereby caused. the other alternate slide bars to move upward, and now, in this return movement of the beam 25 and its adjuncts, the bars that were formerly moved upward are now pulled downward, so that the bell=cranks .44 and 45 are moved in the opposite direcgained by the pivotal conthrough the apertures of these cars extends a vertical rod or supporting bracket 90, having teeth 90 with which one or more of the ears 89 engage, for retaining the shelf 88 in adjusted position, so that; the music may be raised or lowered, to suit the requirement. The rod 90 may be secured on the plate by any proper means, but 1t 15 preferably removably secured, and this may be accomplished by suitably bending the lower end thereof and inserting it through an aperture 91 in the plate 10, and securing its upper end by means of a hook 92.

- in order that the music may be held firmly in place on the shelf 88, it provide a pair of spring clamps .93, pivoted to the plate at 94 and adapted to be swung down into engagement with the outside leaves of the piece of music, so as to clamp it against the base 10.

TVhen it is desired to turn only three sheets of music, the stud 77 is engaged with the third notch or recess 73 instead of the fourth, and so when it is desired to turn only two sheets of music and return them to their normal positions, said stud 77 is engaged with thesecond recess 7 3.; but'when it is desired to turn one leaf back and forward a number ofitimes, the stud 77 remains in its normal position.

While I have described a device which is designed for turning the maximum of four music leaves, it will be understood that I do not limit my invention to this specific construction; and neither do I limit my invention to the exact details of cons ruction, combination and arrangement of arts, as herewith described and illustrated, but my invention may only be limited by a reasonable interpretation of the claims.

Having shown and described a device which is fully capable of attaining the foregoing objects, in a thoroughly practical and efiicientmanner I claim 1. In a music leaf turner, a base plate adapted to be seated on a piano and having means thereon for supporting music leaves, a series of leaf-engaging elements mounted on a substantially vertical axis, a' series of elements pivoted on a vertical axis and adapted to be swung through an arcof less than one hundred and eightydegrees and operating on the leaf-engaging elements for swinging them through one hundred and eighty degrees, a link connected with each said member, a bell crank connected with each said link and pivoted on a horizontal axis, a slide bar connected with each said bell crank, a catch for successively engaging and moving the respective slide bars, and means for actuating the catch. i

2.1m a music leaf turner, a base plate adapted to be seated upon a piano, means on the base plate for supporting music leaves,

a series of jointed levers mounted for rotaaiaaaeo tion on a vertical axis and each carrying a leaf-engaging member, a series of pairs of slide bars, a bell crank pivoted on a horizontal axis connected with each pair of slide bars and with each jointed lever, a catch, means for actuating the catch for moving it alternately into engagement with one of the slide bars of each pair, and means for shifting certain operating mechanism of the catch-actuating means for causing the catch to successively engage and move the other slide bars of each pair, substantially as de scribed.

3. In a music leaf turner, a base having means thereon for supporting music leaves, mechanism on the base in engagement with the leaves for turning thesame, said mechanism comprising a series of levers and links and slide bar operatively connected, a carriage. mounted for reciprocation, a shifter beam pivoted on the'carriage and having a catch adapted for engagement with the slide bars, a shifter plate pivoted on the shifter beam and having a spring connected therewith for actuating the shifter plate and shifter beam in either of two alternate directions, means for automatically shifting the shifter plate when the carriage is reciprocated, and means for returning the shifter plate into its normal position.

4:. A music leaf turner comprising a base, a plurality of parallel spaced and horizontally disposed plates projecting therefrom, a plurality of pivoted levers playing upon said plates, a plurality of arms operated by said levers to turn the pages of music sheets, a plurality of pivoted bell-crank levers connected to said first mentioned levers by means of. links, a plurality of approximately vertically sliding members connected to said bell-crank members bymeans of 'links, said last mentioned means being connected in pairs to said bell-crank levers, on the opposlte sides to said pivoted points of the levers so that when one of said vertically operating means is drawn downwardly the opposite means will be raised upwardly, means to draw downwardly one of said vertically operating means, automatic means to shift said drawing means to actuate a second vertically operating means after the first said vertically operating means has been drawn downwardly, and

means to restore said drawing means to its original position.

5 A music leaf turner comprising a plurality of pivoted arms actuating to turn the' pages of music leaves, a plurality of operat- Y ing means, a plurality of multi-part connectmg means connecting each of said operating means to each of said arms, means to actuate each of said operating means successively, means to guide said actuating means from one of said operating means to the next operating means in successive 10 of automatically said pivoted means, means to hold said pivoted member into operative position, means reversmg sa1d plvoted member and means to reverse said actuating means when said pivoted member is reversed.

In testimony whereof I have signed my name tothis specification inIthe presence of 15 two subscribing witnesses.

FREDERICK ARCHIBALD. Witnesses;

R. O. PICKERING, MARTIN NELSON.

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