US621963A - Electric action for m usical instrum ents - Google Patents

Description

Nu. 62|,963. Patented Mar. 28, I899. W. -B. FLEMING.

ELECTRIC ACTION FOB MUSIGAL INSTRUMENTS.

(Applicmion filed Dec. 30, 189 7.)

3 Sheets-Sheet I.

(No Model.)

By 4 fliiomey w: NORRIS PETERS ca, wowumo, WASHINGTON, r)v c.

Patented Mar. 28, I899.

w. B. FLEMING. ELECTRIC ACTION FDR MUSICAL INSTRUMENTS.

A umibn filed Dec. so, mm.

3' Sheets-8haef 2.

(No Modal.)

THE NORRIS PETERS co, PHOTG-L\THG,, WAEHINGTCN, a. c,

Patented Mar. 28, I899.- W. B. FLEMING. ELECTRIC ACTION FOR MUSICAL INSTRUMENTS.

(Application filed Dec. 30, 1897.)

3 Sheets-Sheet 3.

(No Model.)

I 1 [TJVESSES ms PEYEITS cc. FHOTO-LITNCL, WASHINGTON, l). c.

UNiTEn STATES PATENT OEEIcE.

WVILLIAM I3. FLEMING, OF DETROIT, MICHIGAN.

ELECTRIC ACTION FOR MUSICALINSTRUMENTS.

SPECIFICATION forming part of Letters Patent No. 621,963, dated March 28, 1899. Application filed December 80, 1897. $erial No. 664,572. (No model.)

have invented a certain new and useful Improvement in Attachments for Musical Instruments; and I 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, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to a novel electric attachmentfor musical instruments and it consists of various features embodied in the device shown in the accompanying drawings and hereinafter specified.

In the drawings, Figure l is a View in perspective showing features of my invention. Figs. 2 and 2 are detail views of portions of the mechanism, showing parts in section, Fig. 2 showing parts in horizontal section and Fig. 2 showing parts in vertical section. Fig. 3 is a side elevation viewed from the side opposite that shown in Fig. 1. Fig. 4: is a view of one of the contact-rollers, showing the shaft in section, together with the adjacent diskroller. Fig. 5 is a longitudinal section of portions of said disleroller, showing disks in section. Fig. 6 is a detail view of one of the levers for throwing the driving-shaft out of gear. Fig. 7 is a diagram view showing certain electrical circuits My invention is more particularly designed to provide an electric attachment for musical instruments in which plural In usic-sheets may be employed simultaneously and synchronously actuated.

Parts of the construction embodied in my present construction and in the drawings and specification submitted herewith were also embodied in United States Letters Patent granted to me July 6, 1897, No. 585,663, for an additional mechanism whereby more than one music-sheet may be employed in an attach= ment of this natureas, for example, a music sheet fora sole and an additional music-sheet for an accompaniment.

In the operation of plural music-sheets it is evident that the sheets must be actuated synchronously or in such a manner that music produced by the sheets shall be in unison or in perfect time, which, obviously, would not result if one of the sheets traveled faster than the other or in such a manner that corresponding perforations in the sheets did not afiord synchronous electrical contacts to sound the proper notes in unison. My present invention therefore is designed not only to provide an attachment whereby plural sheets may be employed, but also to provide means for the proper movement of the plural sheets, so that the corresponding notes shall be in unison or in perfect time and any 1ia bility of an uneven movement of the sheets avoided or corrected.

I carry out my invention as follows:

A represents any suitable frame constructed to carry perforated music-sheets, two such sheets being shown in the drawings, one at B and the other at B The sheet B is carried upon 'a drum B.

C denotes a take-up roller upon which the music-sheet B is wound as it unrolls from the drum B. The music-sheet B is carried upon a drum B 0 denotes an additional take up roller upon which the music-sheet B is wound as it unrolls from the drum B in the use of the instrument.

I will first proceed to describe one of the instruments employed to actuate the firstnamed music-sheet, which is as follows:

E denotes a metallic contact-roller made of any suitable material, said roller journaled in an oscillatory frame E, said frame made oscillatory in any desired manner, preferably by journaling the lower end thereof upon the shaft of the roller 0, so that the roller E may be swung over and downward off from the perforated sheet B, said music-sheet traveling therebeneath in the operation of the de vice. The frame E may be provided with a cover portion E to cover the roller E.

G- denotes a contact apparatus or device journaled in suitable bearings upon the frame E adjacent to the metallic rollerE, the musicroll B'traveling between the rollers E and G in the operation of the device. -The contact apparatus G is formed with a series of disks G, engaged upon the shaft G of the contact device. The disks G equal in number the keys upon the keyboard of the musical instrument to which the attachment is applied. This contact device G is similar in construction to the corresponding device embodied in my patent above referred to. To each of said disks G is led a contact-spring J. The said disks have their outer peripheries in contact with the corresponding roller E when the perforations of the musicsheet 13 permit and are preferably provided with hubs g, concaved on their outer peripheries to receive the adjacent end of the corresponding contact-spring J, the concavities serving to hold the corresponding spring in engagement therewith, the springs also exerting a tension to keep the disks up against the roller E, as said springs are prefcrably engaged in the corresponding concavities 011 the under side thereof. The disks G are insulated one from another, as indicated at g, and are mounted upon the shaft G which is either made of insulating material. as of fiber, for example0r provided with a suitable insulation surrounding the same, (indicated, for example, at G lVith the several contact-springs J are connected electrical conductors K, leading to a battery, (indicated at 11,) a battery-wire K being connected with the roller E. The frame E may be made of iron and the battery-wire K be connected therewith, and so with the roller E. It will be apparent that when the in usie-sheet B passes onward between rollers E and G at every perforation of the sheet electrical contact will be formed between the roller E and the corresponding disks of the roller G, completing the electrical circuit and operating the musical instrument accordingly. The conductors K of the two adjacent contact-springs J, Iprefer to lead the one upward and the other downward, two rows of binding-posts a and a upon a portion of the frame being employed simply in order to space the conductors properly apart. Each conductor K, it will be understood, leads to a separate magnet, (indicated at II.) It will be understood that when afresh music-sheet is to be put into the device the frame E will be swung over out of the way. The bore'or orifice g in the disks G, through which the shaft G is passed, is preferably of larger diameter than that of the shaft, so that the contact-springs may force the disks into contact with the roller E should there be anyimperfection or unevenness on the surface of the roller E.

In Fig. 3 circuits are shown, as above described, through the rollers E, device G, the spring J, and the corresponding conductors; but it will be understood that each contactspring J is in a separate circuit similar to that shown in Fig. 2

G indicates an additional contact device adjacent to the metallic roller F, the device G" being constructed in a similar manner to the contact apparatus G, with disks insulated one from another and from the shaft of the device G, springs J being provided to contact with the disks of the device G in a man nersimilarto that of the contact ofthe springs J with the disks of the apparatus G. The perforated n1usicsheet B passes between the roller F and the device G", and as the musicsheet travels therebetween electrical contact will be made through the perforations of said 1nusic-sheet between the rollers F and the disks of the device G". The springs J are in electrical contact in a manner similar to the springs J.

K denotes conductors leading from corresponding springs J to corresponding magnets H thence to a battery II, a conductor K leading from said battery to the roller 1 or to its frame F.

L denotes a cleaning-roller supported in contact with the apparatus G, as upon a support L, the roller L being preferably covered with chamois-skin and rotatable by frictional contact with the disks of the device G to keep the peripheries of said disks clean. A similar roller L carried upon a support If, is arranged in proximity to the device G" to wipe the peripheries of the disks of the device G.

M and M denote arms fulcrumed to the frame, as at m and m, said. arms provided with corresponding springs M and M, having frictional contact on the corresponding rollers B and B said springs serving to keep the cor responding music-sheets taut when the corresponding rollers E and F are thrown into operative position, said rollers bearing, re spectively, in operative position upon the corresponding" arms M and M. When said rollers are thrown back, the pressure on said arms is obviously released, and consequently frictional contact on their respective springs upon their respective rollers.

N represents a spring provided with means at its upper end for engage ment therewith of the corresponding frame E. Said means may consist, for example, of a pin upon the frame E to engage in a corresponding hole in the upper end of said spring, as indicated at 72, whereby said frame is held in position to keep its roller in contactwith the disk of the de vice therebeneath.

I prefer that the drum 15 should rotate at one extremity upon a cone-pointed shaft 1) at one side of the frame, a nut U holding the shaft Z) in place. In a similar manner the roller 0 is rotatable upon a cone-pointed shaft 0 in the side of the frame, a nut o holding said shaft in place. To actuate the drum 1 and the roller O, I provide anysuitable means. As shown in the drawings, D represents a driving-shaft, to which anywlesired power may be connected, as by a belt D, said shaft being provided with a driving-pulley 1, belted, as by a belt with a corresponding pulley U upon By this means the the shaft Z of the drum 1).

the shaft.

The shaft D and its attachments and connections are shown in detail more particularly in Figs. 2 and 2.

To effect the synchronous travel of the two music-rolls so that the corresponding notes shall be sounded in unison, additional electrical circuits and devices are employed,which I will now further describe. The metallic roller E may be rotatable upon cone-pointed shafts, (indicated at e.) Said metallic roller is provided with a bushing or sleeve, (indi cated at c,) said bushing or sleeve being insulated from the corresponding roller, as indicated at c The numerals 1 and 2 indicate contactsprings in electrical contact with the bushing 6' upon the metallic roller E, while the numeral 3 indicates an additional contact-sprin g having direct electrical contact with the me tallic roller E, as indicated in Fig. 7.

The music sheet B, in addition to the perforations necessary to sound the required notes, is constructed with a series of elongated perforations (indicated at 7 and adjacent smaller perforations, (indicated at 8,) theperforations 7 and 8 being indicated in Fig. 7.

Q indicates a magnet which may be located in any convenient place, while adjacent to the frame A is an additional'magnet Q to control the shaft D, and thereby to control the takeup roll C.

(3 is a binding-post, and Q the armature of the magnet Q, an additional post Q being in electrical connection with the post Q the armature Q" contacting with the post Q when open. The armature Q of the magnet Q is provided with a yoke (indicated at Q at its opposite end. A yoke R is secured to the frame in which the armature Q is fulcrumed. Upon the shaft D is a disk 11, rotatable with The disk 11 may be held upon the shaft D in any suitable manner, as by a pin (1, a collar (1 being provided on said shaft on the inside of the case. Upon said shaft is also located a movable friction-pulley 12, constructed to have frictional contact with the disk 11 and to be thrown out of frictional engagement with said disk. The hub 13 of the friction-pulley 12 is constructed with an annular groove 14., with which groove the yoke (Q is engaged, as by screw-studs 15, engaged in said yoke and projecting into said groove. A tension-spring 16 is located upon the shaft D outside the hub 13, said spring normally serving to hold the friction-pulley 12 in frictional contact with the disk 11. A tl1umbnut 1'7 or analogous device bears against one endof the spring and provides means for regulating the tension of the spring. It will be evident that when the armature Q is attracted to its magnet the yoke end Q will throw the friction-pulley 12 out of frictional contact with the disk 11, .in consequence of which the shaft D will cease to rotate and the travel of the corresponding take-up roller will stop.

The other instrument, located toward the lower portion of the frame, is similar in construction to the instrument hereinbefore described.

F denotes a metallic contact-roller similar in construction to the roller E, said roller F being journaled in an oscillatory frame F, preferably journaled upon the shaft of the roller 0 and provided with a cover portion 1 F, the perforated music-sheet B traveling under the metallic roller F in the operation of the machine. This roller F may also be swung over and downward and away from the underlying music-sheet.

N represents a spring similar to the spring N for engagement therewith of the frame F, said spring provided with ahole in the upper end thereof, (indicated at n.)

The drum B may rotate at one end upon a cone-pointed shaft 12 in the frame, a nut 11 holding said shaft in place. Likewise the roller 0 may be rotatable at one end upon a cone-pointed shaft 0 held in place by a nut 0 The drum B and take-up roller 0 may be driven in a similar manner to the drum B, a shaft D being provided, to which any desired power may be connected, as by a belt D The belts D and D are engageable, respectively, with pulleys 12 and 18. The shaft D may also be provided with a pulley 61 similar to the pulley d, belted, as by a belt 01 to a pulley o similar to the pulley b upon the shaft of the drum The shaftD is also provided with a pinion P, said latter pinion actuating a toothed gear 0 upon a shaft of the take-up roller 0. It will be understood ihat the shaft D and its attachments and connections are every way similar to the shaft D and its attachments and connections and therefore need not be separately illus trated and described. The metallic roller F may also be rotatable upon cone pointed shafts, (indicated at f,) said roller being pro vided with a bushing or sleeve, (indicated at f,) insulated from the corresponding roller, as indicated at f Both contact metallic roll ers E and F are preferably'negative in their electrical connections.

Contact-springs (indicated by the numerals at and 5) similar to the springs 1 and 2 are in electrical contact with the bushing f upon the roller F, while an additional contact spring (indicated by the numeral 6) corre sponding to the spring 3 is in direct electrical contact with the roller F. So, also, the musicsheet B in addition to the perforations necessary to sound the required notes, is constructed with elongated perforations 9 and adjacent smaller perforations 10, said latter perforation indicated also in Fig. 7. These latter perforations in the music-sheets are so located that the corresponding contactsprings 2 and 5 6 may make electrical contact therethrough when said perfo ations 7 S and 9 10 are adjacent to the corresponding rollers E and F.

It will be observed that the springs l 2 and l 5 are in electrical contact with the corresponding bushings, while the springs and 6 are in electrical contact with the corresponding metallic rollers insulated from said bushings.

Adjacent to the frame is an additional magnet Q} to actuate the shaft D and thereby to control the take-up roller C".

By reference to the diagram view in Fig. 7 the electrical circuits in which the contactsprings 1, 2, 8,1, 5, and 6, together with their corresponding rollers and the magnets, may readily be traced. The contact-springs 1 and i are connected by conductors, as indicated by the arrow-heads, with the battery H, the battery 11 being connected by a suitable conductor with the frame of the device. The springs 2 and 5 are connected by conductors (indicated by the double arrow-heads) with the magnet Q and armature Q" and with the battery II. The springs 3 and (i are connected by conductors (indicated by the triple arrowheads) with the magnets Q (I and through their respective rollers E and F with the battery H. The armature Q of the magnet Q is provided with a yoke Q" at its opposite end.

B is a yoke similar to the yoke Pt, secured to the frame in which the armature Q is fulcrumed.

The shaft D it will be understood, is similarly provided with a friction-pulley 18, engageable with a disk rotatable with a shaft D the disk on the shaft D not being shown, but being analogous to the disk 11 on the shaft D. The hub 10 of the friction-pulley 18 is also provided with an annular groove (indicated at 20) in which screw-points 21 in the yoke Q" project, and it will be understood-the outer end of the shaft D is also provided with a spring analogous to the spring 16 to throw the friction-pulley 18 norinallyinto engagement with its corresponding disk to actuate the shaft D It will be obvious that when the armature Q is attracted to its magnet the yoke end of said armature will throw the frictionpulley 18 out of frictional contact with its corresponding disk, causing the shaft D to cease its rotation, and consequently stop the travel of the take-up roller 0.

The elongated perforations 7 and 9, it will be observed, project in advance of the perforations 8 and 10, so that electrical contacts may be made through the perforations 7 and 9 in advance of the electrical connections made through the perforations 8 and 10. The perforations 7 and 9 are provided in order to cut out the circuits in which the springs 3 and 0 are interposed from the two magnets Q and Q which control the operation of the two take-up rollers, if required.

In the operation of the device the springs 2 and 5 will form contact with the corresponding bushings or sleeves first or before any contact may he formed by the springs and (3 through the perforations 8 and 10. \Vhen the contacts are made through the perforations 7 and '9, the corresponding conductors are cut out from the two magnets Q and Q". If the two music-sheets are traveling together in proper manner, the contacts made through the elongated perforations 7 and 9 simply cut outthe corresponding conductors from said magnets which control the traveling of the music-sheets and nothing results; but if either one of the elongated perforations 7 and 9 is traveling ahead the one of the other it will be seen that contacts will be made by the corresponding springs through the perforations 8 and 10 to actuate the magnets Q and Q and to throw the corresponding frietion-pulleys out of contact with the corre sponding friction-disks, thereby stopping the travel of the sheet which is traveling ahead of the other, the sheet so stopped being held from moving until the other sheet catches up or until contacts are. made through the perforations 7 and 9, cuttingont the corresponding conductors from the corresponding magnets and allowing the music-sheet that has been stopped to travel onward. Thus when contacts are made through the two elongated perforations that is, when said elongated perforations are in corresponding line or position and contacts made therethronghthe magnets Q and Q are cut out, and consequently the corresponding friction-pulleys are left in frictional contact with their respective disks. The perforations 7 and 0 should be sufficiently elongated to insure electrical contacts therethrough prior to electrical contacts through the perforations S and 10, so as to cut out the circuits in which the springs 3 and 6 are interposed when the parts are in proper relative position, and to secure the desired results the perforations 7 and 9 should be of a length about twice the diameter of the perforations S and 10. The springs l. and i are in contact with the corresponding bushings outside the music-sheets and keep the corres i onding bushings in electrical circuit all the time. Thus the friction-pulleys are moved away from their corresponding friction-disks when the circuit is completed through the smaller perforations Sand 10; otherwise the corresponding springshold said friction pulleys in frictional contact with the corresponding disks to turn the take-up rollers.

Upon each of the two shafts D and D' at one side of the device is a sleeve V, made reciprocatory on its shaft, said sleeve provided at one end with the corresponding pinion l to mesh with the gear upon the shaft of the corresponding take-up roller. Said sleeve ICO may be constructed with a slot or orifice V, into which projects a pin V upon the adjacent shaft to limit the reciprocation of the sleeve. The sleeveis also constructed with an annular groove at V and is constantly driven by the shaftD by means of the pin V through the orifice V. v

T is a lever fulcrumed, as as t, to any suitable portion of the frame, as upon an arm T, secured to the frame A. This lever, as indicated in Fig. 6, is beveled at one end, as indicated at t. A lever T is located to engage each of the shafts D and D in the manner hereinbefore described, said levers provided at the end opposite the beveled edge t with a pin t to project into the annular groove V of the corresponding sleeve, as, shown more particularly in detail in Figs. 2 and 2. Each of the frames E and F toward its lower end is provided with a pin i This pin is so located that when the corresponding frame is swung over and away from the music-sheet, the pin i will contact with the beveled edge of the corresponding lever T, thereby oscillating said lever on its fulcrum t, as indicated in dotted lines in Fig. 6, by which meansthe corresponding sleeve is moved 011 its shaft to throw its pinion out of mesh with the corresponding gear, thereby causing the rotation of the corresponding take-up roller to cease, whereby the mechanism is free to rewind, as hereinafter described. Each of the shafts D and D is also provided with a disk V provided with a pin V projecting inWard,While the corresponding sleeve at the end adjacent to said disk is provided with a pin V", projecting toward the pin V It will be observed that when the pinion is in mesh with the corresponding gear the pins V and V are separated so as to pass one another Without contact; but when the pinion is moved awayand out of mesh with its corresponding gear the pin V upon the sleeve is moved so as to contact with the pin V in the rotation of the corresponding shaft. The pulleys cl and d upon their corresponding shafts, together with the corresponding disks V, respectively, are rigidly connected, and when the pinion is in mesh with the corresponding gear the corresponding pulley is loose upon the shaft; but when the pin V contacts with the pin V as above specified, the disk and pulley will be rotated, driving thecorresponding belt d or d to rewind the music-sheet upon its corresponding drum B or B when the corresponding frame E or is thrown over.

It will be evident that the parts provided with the pins V and V constitute a clutch mechanism, and that any suitable clutch mechanism may be substituted therefor.

The note-perforations in the musicsheets, or perforations through which contacts are made to sound the notes, are indicated at 22.

Both contact devices are constructed not only with a series of disks G equal to the number of notes to be sounded and upon which contact-s pri n gs .T and J have contact,but with son.

two outside disks G G, with which the corresponding contact-arms 2 3 and 5 6 are in contact, as illustrated more particularly in Fig. 5, the arms 1 and 4, as already observed, being outside the edge of the music-sheet and not needing to contact with any insulated disks upon the corresponding contact device. The arms 2 3 and 5 6 preferably have contact in hubs of the correspondingdisks in a manner similar to the springs J and J. The arms 3 and 6 preferably contact with the body of the contact devices E and F, as thereby different voltages may be given to said rollers, if desired, from that supplied to the bushings or sleeves upon said roller. As shown, the rollers E and F are both negative, as indicated by the negative sign therebeneath in Fig. 7. v The elongated perforations 7 and 9 are employed in order that they may extend in ad- Vance of the corresponding perforations 8 and 10 and to the rear thereof, and thereby prevent electrical contacts first being made through said perforations S and 10 when the music-sheets are traveling in unison. It will be observed that if the contact-springs 2 and 5 make electrical connection through the perforations '7 and 9 first the springs 3 and 6 would be cut out, which operation will take place where the sheets are traveling in uni- The elongated perforations should be of such alength as to permit their projecting forward of the smaller perforations S and 10 to allow the cutting out of the springs 3 and 6, as above described, and should also project sufficiently to the rear of the perforations 8 and 10 to hold the springs or contacts 3 and 6 cut out until the sheets have passed the points of contact of said springs through their corresponding perforations. If the sheets are traveling in unison, then of course the perforations 7 and 9 are in unison and electrical circuits are established with the two magnets that actuate the clutches. The perforations 8 and 10 are only aboutone-eighth of an inch in diameter, and it will be seen that the sheet has to travel but a very short distance before the perforations are past the'sprin gs 3 and 6. It will also be understood that the sheets are traveling quite rapidly and that the electrical contacts are consequently very quick and short. If the sheets vary but a little, any va riance in the notes would not be noticed, because the electrical contact is so quickly terminated; but if one sheet traveled so far ahead of the other that the proper contacts should not be formed in time to cut out the springs 3 and 6, the travel of said sheet would be simply stopped until the other sheet caught up again. The corresponding clutch might be operated just foran instant. The action must be very quick and brief to accomplish the de sired result. The action of the sheets does not have to be perfectly simultaneous, as but a slight difference cannot be detected.

What I claim as my invention is 1. A music-sheet provided with two series of perforations to regulate the travel of the IIO sheet, said perforations arranged in adjacent pairs, one perforation of each pair being elongated and projecting forward of the corresponding perforation, for the purpose set forth.

2. In an eleetrieally-eontrollcd attachment for musical instruments, a music-sheet pro vided with perforations arranged in pairs, whereby the travel of the sheet may be regulated, one perforation of each pair extending in advance of the other, whereby an electrical circuit may be closed through one of said per forations of each pair before a circuit maybe closed through the other perforation of each pair, as set forth.

In an attachment for musical instruments, two music-sheets provided with perforations whereby the travelof the sheets may be regulated to keep the sheets in unison, metallic contact-rollers each provided with a contact-sleeve, contact-springs to contact with said rollers and contact-springs to contact with said sleeves, electrical circuits connected with said conflict-springs, and magnets interposed in said circuits, for the purpose set forth.

-l-. In an attachment for musical instruments, two mnsic-sheets provided with two series of perforations, whereby the travel of the music-sheets may be regulated to keep them in unison, metallic contact-rollers each provided with an insulated sleeve, electrical circuits connected with said rollers and with said sleeves, contact-springs in said circuits to form electrical contact through said perforations, and magnets interposed in said electrical circuits, for the purpose set forth.

5. In an attachment for musical instruments, two in usic-sheets provided with perforations whereby the travel of the sheets may be regulated to keep them in unison, metallic contact-rollers each providedwith an insulated sleeve, contact-springs to contact with said sleeves,eleetrical circuits connected with said springs and with said rollers, and magnets interposed in said circuits, for the purpose set forth.

6. In an attachment for musical instruments,a m usic-sheet having note-perforations, and additional series of perforations for the purpose set forth, a contact apparatus provided with a series of disks' equal in number to the rows of note-perforations of the musicsheet, and with additional insulated disks equal in number to said additional perforations of the music-sheet, and electrical circuits provided with means to form electrical contacts through said perforations, said perforations arranged in pairs, one perforation of each pair being elongated and projecting forward of the corresponding perforation, substantially as described.

7. In an attachment for musical instruments, a traveling in usic-sheet provided with note-perforations and with additional perforations arranged in pairs to regulate .the travel of the sheet, a contact-roller, a contact apparatusprovided with a series of insulated disks equal in number to the rows of noteperforations of the music-sheet, and with additional insulated disks equaling the number of regulating-perforations of the music-sheet, contact-springs in electrical connection with said disks, electric circuits in electricalconnection with said contact-roller and with said contactarms, and electrically-controlled means interposed in said circuits to regulate the travel of the sheet, said perforations arranged in pairs, one perforation of each pair being elongated and projecting forward of the corresponding perforation, substantially as described.

8. In an attachment for musical instruments, two independently-traveling musicsheets each provided with two series of perforations arranged in adjacent pairs, one perforation of each pair being elongated and projecting forward of the corresponding perforation, and electricallyactuated means arranged to regulate the travel .of said sheets to cause said sheets to operate in unison, substantially as set forth.

9. In an attachment for musical instruments, two traveling music-sheets each provided with two series of perforations arranged in pairs, one perforation of each pair being elongated and projecting forward of the corresponding perforation, independent shafts to drive said sheets, and electric means arranged to regulate the operation of each of said shafts to cause the music-sheets to operate in unison, substantially as set forth.

10. In an attachment for musical instruments, two independent drums, corresponding take-up rollers, two independently-travcling music-sheets carried upon said drums and take-u p rollers, each sheet provided with noteperforations and with additional perforations arranged in pairs, and electrical means aw ranged to regulate the travel of said sheets to cause them to operate in unison, substantially as set forth.

11. In an attachment for musical instruments, two traveling music-sheets each provided with note-perforations, and with additional series of perforations arranged in pairs, independent shafts to drive said sheets, clutch mechanism to drive each of said shafts, and electric means arranged to actuate the clutch mechanism to regulate the travel of the music-sheets, substantially as set forth.

12. In an attachment for musical instruments, the combination of two music-sheets each provided with two series of perforations arranged in adjacent pairs, one perforation of each pair being elongated, independent traveling drums and corresponding traveling take-up rollers to carry said music-sheets, an oscillatory frame provided with a contactroller adjacent to each music-sheet, a conductor in electrical connection with each of said contaet-rollers,a shaft provided with aseries of insulated disks adjacent to each of said contact-rollers, and between which and the eorresponding contact-roller one of the musicsheets passes, contact-springs in electrical connection with each of said series of disks, and electrically-controlled means arranged to regulate the travel of said music-sheets to cause said sheets to operate in unison, substantially as set forth.

13. In an attachment for musical instruments, two music-sheets each provided with two series of perforations arranged in adjacent pairs, one perforation of each pair being elongated, independent drums upon which said music-sheets are placed, inde pendent take-up rollers upon which the musicsheets are wound in the action of the device, means to actuate said take-up rollers, a contz'tct-roller adjacent to each of the musicsheets, a series of insulated disks adjacent to each of said contact-rollers, and belween which and the corresponding contact-roller one of the music-sheets passes, an insulated shaft upon which said disks are mounted, contact-springs in electrical connection with said disks, said springs and contact-rollers provided with electrical conductors, and electrically-con trolled means arranged to regulate the travel of each of said music-sheets, for the purpose set forth.

1-:l-. In an attachment for musical instruments, the combination of two music-sheets each p ovided with two series of perforations arranged in adjacent pairs, one perforation of each pair being elongated, independent drums and corresponding take-up rollers to 'carry said music-sheets, a contact-roller for electrical conductors leading to each of said contact-rollers and to each of said disks, and electrically-controlled means arranged to regulate the travel of said music-sheets, for the purpose set forth.

15. In an electrically-controlled attachment for musical instruments, a music-sheet provided with note-perforations and with two additional series of perforations arranged in pairs through which the electric circuit is closed to regulate the travel of the sheet, one perforation of each pair being elongated, as set forth.

16. I11 an attachment for musical instruments, music-sheets each provided with two series of perforations arranged in adjacent pairs, one perforation of each pairextending in advance of the other to regulate the travel of the sheets, independent traveling drums and corresponding take-up rollers to carry said music-sheets, shafts to actuate the takeup rollers, clutch mechanism upon each of said shafts, electric circuits, and a magnet provided with an armature arranged to actuate each of the clutch mechanisms, said magnet controlled by said perforations, substantially as described.

17. In an attachment for musical instruments, two music shcets each provided with two series of perforations arranged in adjacent pairs, one perforation of each pair extending in advance of the other to regulate the travel of the sheets, independent traveling drums and corresponding take-up rollers to carry said sheets, a shaft to actuate each of said sheets, clutch mechanism upon each of said shafts, an electric circuit, an armature in said circuit to actuate each of said clutch mechanisn'is, a magnet in said circuit to actuate each of said armatures, and electricallyactuated devices to throw said magnet into and out of operation, said devices controlled by said perforations, substantially as set forth.

18. In an attachment for musical instruments, music-sheets each provided with two series of perforations arranged in adjacent pairs, one perforation of each pair extending in advance of the other to regulate the travel of the sheets, independent shafts to drive said sheets each provided with clutch mechanism,

. an arm-atu re fulcrumed intermediate its ends,

and provided with a yoke atone end to actuate the clutch mechanism, and a magnet to actu ate said armature,said magnet controlled by said perforations, substantially as set forth.

19. In-an attachment for musical instruments, the combination of a music-sheet, a drum and a take-up roller to carry said sheet, a shaft to actuate said take-up roller, means to govern the operation of the take-up roller, an oscillatory frame,a pinion upon said shaft to actuate the take-up roller, a pulley upon said shaft to drive said drum, a lever actuated by the movement of said frame to throw said pinion out of operation with the take-up roller, and into operation with said pulley to rewind the music-sheet upon said drum, substantiall y as set forth.

20. In an attachment for musical instruments, the combination of music -sheets, a drum and a take-up roller to carry each of said music-sheets, dri"ing-shafts, a pinion upon each shaft geared with the corresponding take-up roller, an electrically-controlled clutch on each driving-shaft, electrically-governed means controlled by the travel of said sheets to govern the operation of the drivingshafts, a pulley upon each of the driving shafts and upon the shaft of each of said drums, a belt upon each of said pulleys, an oscillatory frame, a lever actuated by said frame to throw each of the driving-shafts out of gear with the corresponding take-up roller and to actuate the pulley upon the correspondin g drivin shaft to rewind the musicsheet upon the drum, substantially as set forth. l.

21. In an attachment for musical instru- 'ments, the combination of music-sheets each provided with a series of perforations to regulate the travel of the sheets, drums, and a take-up roller to carry each of the music sheets, driving-shafts, electrically-governed means controlled by the travel of said sheets to govern the operation of the driving-shafts,

a gear upon the shaft of each of the take-up rollers, a sliding sleeve upon each drivingshaft provided with a pinion meshing with said gear to drive the corresponding take-up roller, means to reciprocate said sleeve to throw said pinion out of mesh with said gear, a pulley upon each driving-shaft and upon the shaft of each of the drums, and aclutch actuated by the movement of said sleeve when its pinion is thrown out of gear to actuate the pulley upon each of the driving-shafts to rewind the music-sheets, said perforations arranged in airs, one perforation of each pair being elongated to extend in advance of and rearward of the other, substantially as described.

22. In an attachment for musical instruments, the combination of traveling musicsheets each provided with two series of perforations to regulate the travel of the sheets, drums, take-up rollers to carry the musicsheets, driving-shafts, a clutch on each driving-shaft, electrically-governed means controlled by the travel of said sheets to govern the operation of the driving-shafts, sliding sleeves upon the driving-shafts geared with the corresponding take-up roller,pulleys upon the driving-shafts and upon the shafts of the drums, belts uniting corresponding pulleys, oscillatory frames, and levers actuated by the movement of said frames to actuate said sleeves, said perforations arranged in adjacent pairs, one perforation of each pair ex tending in advance of the other, substantially as described.

In an attachment for musical instruments, two independently-traveling musicsheets each provided with note-perforations and with additional perforations arranged in pairs, one perforation of each pair being elongated to project forward and rearward of the corresponding perforation, and electrical mechanism controlled by said perforations to regulate the travel of said sheets, substantially as set forth.

2%. In an attachment for musical instruments, two traveling music-sheets each provided with netc-perforations, and with an additional series of perforationsarranged in pairs, one perforation of each pair being elongated to project forward and rearward of the corresponding perforation, independent shaft-s to drive said sheets, clutch mechanism to drive each of said shafts, and electricallyactuated means arranged to operate the clutch mechanism, said means forming electrical contacts through the additional perforations in said sheets to regulate the travel of the sheets, substantially as set forth.

25. In an attachment for musi *al instruments, two music-sheets each constructed with note-perforations and with additional perforations arranged in pairs, one perforation of each pair being eloi'igatcd to project forward and rearward of the corresponding perforation,independenttravelingdrumsand corresponding take-up rollers to carry said sheet-s, two shafts each provided with a series of disks insulated one from another, a contactroller adjacent to the disks upon each of said shafts between which and the adjacent disks the corresponding music-sheet passes, a conductor in electrical connection with each of said contact-rollers, contact-springs in electrieal connection with each series of said disks, and electrically-controlled means governed by said perforations arranged to regulate the travel of said music-sheets to cause said sheets to operate in unison, substantially as set forth.

26. A music-sheetprovided with two series of perforations to regulate the travel of the sheet, one perforation of each pair being elongated, electric contacts arranged to be closed through said perforations, and whereby an electric contact may be closed through the elongated perforations in advance of an electric contact being made through the other corresponding perforations, substantially as set forth.

27. In an attachment for musical instruments, means to effect the travel of the music-sheet, a musicsheet provided with two series of perforations arranged in pairs, and electric contact devices arranged to be closed through said pairs of perforations, whereby an electrical contact may be formed through one perforation of each of said pairs in advance of the electrical contact made through the other corresponding perforation andsubsequent thereto to regulate the travel of the music-sheet, substantially as described.

In testimony whereof I sign this specillcation in the presence of two witnesses.

\VILLIAM l FLEMING.

Witnesses:

N. S. \VRIGH'IT, O. 13. BAENZ'IGER.

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