US1250165A - Registration mechanism for automatic musical instruments. - Google Patents

Description

w. E. 'HASKELLI REGISTRATION MECHANISM FOR AUTOMATIC MUSICAL INSTRUMENTS.

APPLICATION FILEDAPR. I5. I9I6.

Patented Dec. 18, 1917.

3 SHEETS-SHEET I- un Incas 6 ilk-MM;

W. E. HASKELL.

REGISTRATION MECHANISM FOR AUTOMATIC MUSICAL INSTRUMENTS.

APPLICATION FILED APR. I5, I9I6- Patented Dec. 18, 1917.

3 SHEETS$HEET 2.

W. E. HASKELL. REGISTRATION MECHANISM FOR AUTOMATIC MUSICAL INSTRUMENTS.

APPLICATION FILED APR. 15. I9I6.

Patented Dec. 18, 1917.

3 SHEETS-SHEET 3.

UNI ED STATES PATENT OFFICE.

WILLIAM E. HASKELL, OF BRATTLEBORO, VERMONT, ASSIGNOR TO ESTEY ORGAN COMPANY, OF BRATTLEBORO, VERMONT, A CORPORATION OF VERMONT.

REGISTRATION MECHANISM FOR AUTOMATIC MUSIGAL INSTRUMENTS.

Specification of Letters Patent.

Application filed April 15, 1916. SeriaI No. 91,392.

To all whom it may concern:

Be it known that I, WVILLIAM E. I-IAsKELL, of Brattleboro, in the county of lVyndham, State of Vermont, have invented a new Registration Mechanism for Automatic Musical Instruments, of which the following is a specification.

The object of the present invention is to maintain in proper registration a traveling perforated note sheet and a cooperating tracker having channels with which the perforations in the note sheet coincide, such a tracker being a well known characteristic of musical instruments wherein sounding devices are controlled by perforations in the note sheet.

Registration mechanisms for maintaining a tracker and perforated note sheet in proper relation have long been well known. The most widely used registration mechanisms of this character utilize a pneumatic motor the action of which is determined by the position of the note sheet relatively to the tracker, the pneumatic motor bein operatively connected either to the trac (er or to the note sheet supports so as to move one relatively to the other in order to maintain registration.

In accordance with the present invention the note sheet itself is utilized to perform the mechanical work involved in maintaining registration. No extraneous motor is employed.

An embodiment of the present invention is illustrated in the accompanying drawings, in which- Figure 1, is a front view, partly in section of the tracker and note sheet supporting and feeding devices, a portion being broken away to facilitate illustration on a large scale. Fig. 2, is a cross-section in the plane indicated by the line 22 in Fig. 1, a part being broken away to facilitate illustration on a large scale. Fig. 3, is a vertical section in the plane indicated by the line 33 in Fig. 1. Fig. 4, is an end view at the driving side. Figs. 5, 6, 7 and 8, are detail views.

The tracker A, as illustrated in Fig. l, is one equipped with two rows of openings at, being such a tracker as is employed in organs having two manuals. Such trackers are commonly made with 116 holes, 58 in each row. The illustrated mechanism is capable of use with note sheets adapted to cooperate with a tracker having 116 openings, the width of such note sheets being indicated in the drawings by the line marked Old paper in Fig. 1. The illustrated tracker has additional openings at the two ends which are utilized for the purpose of controlling stop combinations, or other adjuncts of an organ such as swells. The number of such auxiliary openings, may be varied. The drawings illustrate five auxiliary openings, three at one side and two at the other. l/Vith a tracker bar having such auxiliary openings a wider paper is employed. The width of such wider paper is indicated in Fig. 1, by the line marked New paper. A customary width of the old paper is ten inches and one-eighth of an inch. A proper width for the new paper is ten inches and seventeen-twenty-fourths of an inch. The illustrated mechanism is adapted to utilize either of these widths of paper. The devices employed which adapt the mechanism for the different widths of paper will be explained after the registration features have been set forth. 1

B, is the music roll upon which the perforated note sheet (I, is initially wound. D is the take-up roll. Both the music roll and the take-up roll are mounted in a transversely swinging frame. This frame swings transversely to the length and travel of the music sheet. This transversely swinging frame comprises two vertically extending rods E, each having forwardly extending brackets F, F, one at each end; and two vertically extending side bars G, G. Each rod E, is mounted to turn on a vertical axis. As shown each rod E, is journaled at both ends and is supported at its lower end by a step bearing, a pointed cone step being illustrated so as to involve little friction. Each bar G, is parallel'with the corresponding rod E, and it is j ournaled at both ends between the outer ends of the brackets F, F, of the corresponding rod E. Pointed cone step bearings are employed at both. ends of each bar G, so as to minimize friction. The two bars G, are adjustably connected together near their upper ends by means of a tie-rod H. By reason of the independent pivots of the bars G, G, they remain parallel with each other irrespective of the swing of the entire frame from side to side on the vertical axes of the two rods E, E.

The music roll B, and the take-up roll D, are mounted to turn in and be carried by the two bars G, of the transversely swinging frame. The manner in which these two rolls are thus mounted and journaled will be hereinafter explained. It suffices to know that they are so mounted and journaled in order to understand the way in which the registration is maintained between the note sheet and the tracker.

As shown in F 3, the perforated note sheet in passing from the music roll to the take-up roll extends over the tracker. The face of the tracker is forward of the two rolls so that the note sheet makes a bend in passing over the tracker thereby facilitating close contact between the note sheet and the surface of the tracker. The note sheet on its way between the two rolls B and D, passes between two guides I, l, near the tracker. The two guides are carried by two rods J, K, respectively, and each rod is mounted to-slide lengthwise and transversely to the note sheet in stationary bearings 7), 7). The rod J, is adjustably connected to the forward end of a lever L, pivoted at c, to a fixed part of the mechanism. .The rod K, is adjustably connected to the front end of a lever M, which is pivoted at (Z, to a fixed part of the mechanism. The two levers L and M, are connected together by a spring N, and by a link 0. The link is pivoted to the lever L, forward of its pivot c; and it is pivoted to the lever M, back of its pivot (Z. The spring N, acts to pull the outer ends of the two levers L and M, toward each other, and thus to move the two guides 1, toward each other and to cause them to yieldin'gly bear upon the edges of a note sheetpassing between them. The link 0, compels the movements of the two levers in unison under all circumstances. It is important that these disks should be out of the waywhen a music sheet is placed in the musical instrument or i removed therefrom. To this end, a headed red P, loosely connects the lever L, to'the movable board of a. pneumatic Q, as shown in Fig. 2. The movable board of the pneumatic is acted upon 'by a spring R, which is more powerful than the spring N. lVhen the musical instrument is not being used, the spring R, moves the movable board'of the pneumatic to the right (as shown in Fig. 2) thereby separating the forward ends of the levers L and M, which move in consonance due to the link 0, hence putting the spring N, under greater tension and separating the guides I, to the maximum extent. A. note sheet can then be readily positioned between the two guides I, and in contact with neither. When the music sheet is in place, compressed air is admitted to the interior of the pneumatic Q, thus swinging the movable board to the left, putting the spring R, under increased tension, and moving the loosely con nected head 6, of the rod P, out of the way of the lever L. Thereupon the light spring N, brings the outer ends of the two levers L and M, toward each other, thereby causing the two guides I, to yieldingly press upon the opposite edges of the note sheet. This pressure is sufliciently light so that there is no injury to the edges of the paper.

The illust 'ated mechanism is shown as located within a boxS, into which compressed air is admitted after the front has been closed by the customary sliding glass panel, which is so well known that it is not illustrated in the drawings. The interior of the pneumatic ,Q, communicates with the interior of thebox S, through the pipe Accordingly, when compressed air is admitted intothe box for the purpose of feeding the tracker openings a, through the perforations g, inthe note sheet it passes into the interior of the pneumatic Q, thereby leaving the guides 1, under the exclusive control'of the p n Vhenthe automatic playing mechanism is at work, the note sheet runs between the guides I, which press'yicldingly on the oppo site edgesof the sheet. These guides pressing equally on opposite edges of the sheet maintain the sheet centrally with respect to the tracker. That is to say, the middle longitudinal line of the music sheet is maintained in register with the middle line of the tracker. The force exerted by the spring N, is greater than the friction of the bearings of the transversely swinging music sheet supporting frame, and also sufficiently great to overcome the inertia of the swinging frame. Consequently, any deviation of the sheet from registration with the tracker bar is compensated for by the swinging of the note sheet supporting frame and b the automatic adjustment of the guides I. Assume, for example, that the sheet tends to move toward the right (as shown in Figs. land 2 of the drawings), this tendency is resisted by the right hand guide I, and the result is to swing the note sheet supporting frame to the left thereby maintaining the proper registration between the note sheet and the tracker. Any contraction or expansion of the note sheet is taken care of by the yielding character of the guides I, which move to or from each other to comply with the variations in the width of the note sheet.

The music roll 13, is removablymounted in the swinging frame. The bar G, at the left (Fig. 1) carries a yielding bearing 71., for the corresponding end of the music roll. This yielding bearing is similar to yielding bearings which have heretofore been employed in musical instruments excepting that in the instant case it is carried by a transversely swinging frame. At the right hand end the music roll is detachably secured to a driven shaft T, j ournaled in the right hand bar G. The detachable coupling between the music roll and the driven shaft is of familiar construction. Accordingly, the music roll can be removed and a different one replaced in the same way as in well known prior automatic musical instruments. The driven shaft T, comprises one section 2', inside the right hand bar G, an outer section j, extendingthrough the said bar, and a pintle k, secured to both. The music roll is driven during rewinding from a drive shaft U, Which is rotated and controlled in any of the well known ways. Owing to the lateral movement of the note sheet supporting frame a compensating connection is employed between the drive shaft U, and the driven shaft T. The driven shaft T, has a crank arm 1, (Fig. 6) fastened to the outwardly projecting end of the pintle 7s, and this crank arm has a radial open slot m. The neighboring end of the drive shaft U, has a crank arm n, which has an inwardly and laterally projecting elongated crank pin 0, which enters the slot m. The length to which the crank pin extends on both sides of the slot m, is sufiicient to compensate for the maximum possible lateral swing of the note sheet supportingframe. The crank pin has a sliding fit within the slot m, which is sufficiently close so that the music roll is always under the ready control of the drive shaft during rewinding.

The take-up roll D, comprises a drum V, fast on a shaft 7. This shaft V, is journaled at opposite ends in the two bars G, of

the swinging frame. At the right hand end a reduced end of the shaft W, extends to the right beyondthe right hand bar G, and this projecting end is secured to a crank arm [9, (Fig. 5) having a radial open slot 9. A motion transmitting gear 7, has a transversely extending crank pin 8, which enters the slot (1, and has a sliding and driving fit therein. This gear 1', is carried by a shaft 23,

Y journaled in a bearing carried by. a fixed part of the apparatus. The gear 1,- is driven during the playing of the composition on the music sheet from a drive shaft X, which has a pinionu, adapted to engage the gear 1".

- The drive shaft X,'is rotated in any ofthe now well known ways, and as is customary it is movable lengthwise so as to engage and d sengage its pinion u, from the gearr. The

sliding'connection between the gear 4", and

the take-up shaft W, permits and compensates for the lateral swing of the note sheet supporting frame.

Fig. 1, shows a swinging frame adjusted to receive amusic roll carrying the wide paper. It is desirable that the swinging frame should be adjustable so as to permit the use of a narrower 116-no1'e sheet so as to utilize the extensive assortment of such note sheets which is now in existence.

This adjustment is effected by the connections between the tie-rod H, and the side bars G, of the swinging frame and by reason of the telescopic construction, employed in connection with the take-up roll.

The tie-rod H, is permanently secured at its right hand end to the right hand bar G, by means of a. sleeve 1:, which is socketed into the right hand bar G, and two collars w, which are pinned to the tie-rod H, at the opposite ends of the sleeve 12. At its left hand end the tie-rod H, is screw-threaded andscrews into a screw-threaded sleeve Y, which issocketed into and secured to the left hand bar G. The lefthand end of the tie-rod extends beyond the sleeve Y, and outside of the left hand bar G, and to this end is pinned a Collar m. At its middle the tierod has a milled section y, by means of which the tie-rod can be readily turned by hand. Between this middle turning section and the inner end of the sleeve Y, the tie rod has pinned to it a stop .2. Fig. 1, shows the distance between the stop 2, and the inner end of the sleeve Y, as just equal to the difference in width between a 116-note sheet and the wider note sheet employed. In order toadjust the bars G, for the narrower note sheet (which, of course, is done when there is no music roll in the apparatus) the tiered H, is turned until the sleeve Y, abuts against the stop The frame bars G, are then atthe proper distance apart to receive the 1l6-slot note sheet. The outer collar 00, on, thetie-rod H, constitutes an outer stop to determine the proper adjustment of the side bars G, to receive the wide paper.

As the take-up roll is permanently mounted in the frame bars G; provision is made for the adjustment of the take-up roll to corre-,

spend with the adjustment of the frame bars G. The eflective size of the take-up roll is determined by the two flanges Z, Z, at the opposite ends of the take-up roll. It is be tween these flanges that the note sheet extends and these flanges are spaced apart to properly receive and guide the note sheet as it is woundjupon the take-up roll. Each flange has a hub 10, which embraces the shaft 1V with a sliding fit. The drum V, is shorter than the distancefbetween the two flanges Z, when the apparatus is adjusted for the wide paper. the spaces between the two ends of the drum and the-two flanges being equal. At each end the drum is recessed as shown at 11, in full lines at the right in Fig. 1, and in dotted lines at the left. A coiled spring 12, surrounds the shaft W, between each end of the drum V, and the neighboring flange Z, each spring extending into the corresponding recess 11, as shown in full lines at the right in Fig. 1, and in dotted lines at the left. The shaft has shoulders 13, at opposite ends constituted by the difference in diameter between the central portion of the shaft and the smaller outer ends which extend through the side bars G, and are jonrnaled therein. hen the wide note sheet is employed there is a space be ween each of these shoulders and the inner face of the neighboring side bar G. The sum of these spaces is at least equal to the difference between the widths of the two varieties of note sheets. At the right hand end of the shaft W, the external crank p, constitutes a stop. At the left, the shaft extends outwardly beyond the left hand side of the bar G, and to this projecting end a stop 14:, is secured. When the wide sheet is used the side bars G, are against the stop 14C, and the crank 29, and the hubs of the flanges Z, are held pressed against the inner faces of the side bars G, by the spi'ings'12.

When the tie-rod H, is turned to bring the side bars G, closer together, the springs 12, yield and permit the flanges Z, to be brought. co-rrespomlingly close together so that they guide the narrower sheet with the same eflicacy as the wider sheet. Preferably, the side bars G, just set against the shoulders 13, u hen the frame is adjusted to receive the narrower note sheet.

It is important that the sliding pinion a, should be accurately positioned with respect t the. gear 7*. The bearings for the shafts of this pinion and gear are supported by the wooden side wall 15, of the box which incloses the tracker and the music sheet sup porting mechanism. A wooden support for the bearings of shafts t, and X, would be unreliable to maintain the said gear and pinion in proper relation. Accordingly, a metal plate 16, is secured to the outer face of the side wall 15, and the respective bearings for the two shafts are positioned by this plate. The bearing sleeve 17, for the shaft 6', is socketed into this plate 16. The shaft X, turns in a bearing 18, (Fig. 8) which is carried by the plate 16. Hence the pinion and the gear are always maintained accurately positioned irrespective of any change in the side wall 15. It will be noted that the shaft X, extends through a. larger hole 19, in the side wall 15.

To insure accurate fit between the pinion and gear, the bearing 18, is adjustable in the plate 16. The bearing 18, has an eccentric bore in which the shaft X, fits. The bearing 18, screws into the plate 16. Hence,

by turning the bearing (which has a hexagonal head for this purpose) the shaft X, can be adjusted with respect to the shaft 25, thus insuring an accurate fit between the gear 1, and the pinion u. The bearing 18, when adjusted is maintained in place by a lock nut 20.

1. An automatic musical instrument having, in combination, a tracker; a transversely swinging frame having side bars pivoted therein; a tie-rod connecting said side bars; a music roll and a take-up roll ournaled in and between said side bars; transversely movable guides near said tracker between which the note sheet travels as it passes from the music roll to the take-up roll and over the tracker; levers acting on said guides; a spring connecting said levers and causing said guides to press yieldingly against the edges of the note sheet; a link connecting said levers; apneumatic; a spring acting on said pneumatic to close it; said spring being more powerful than the aforesaid spring which connects said levers; a loose connection between said pneumatic and said levers; and a compressed air connection to said pneumatic whereby the pneumatic is expanded and the guides are freed to press on the edges of the note sheet.

2. An automatic musical instrument hav ing, in combination, a tracker; atransversely swinging frame having side bars pivoted therein; a music roll and a take-up roll journaled in and between said side bars; transversely movable guides near said tracker between which the note sheet travels as it passes from the music roll to the take-up roll and over the tracker; levers acting on said guides; a spring connecting said levers and causing said guides to press yieldingly against the edges of the note sheet; a link connecting said levers; a pneumatic; a spring acting on said pneumatic to close it; said spring being more powerful than the aforesaid spring which connects said levers; a connection between said pneumatic and said levers; and a compressed air connection to said pneumatic whereby the pneumatic is expanded and the guides are freed to press on the edges of the note sheet.

3. An automatic musical instrument having, in combination, a tracker; a transversely swinging frame having side bars pivoted therein; a music roll and a take-up roll journaled in and between said side bars; transversely movable guides near said tracker between which the note sheet travels as it passes from the music roll to the takeup roll and over the tracker; a spring causing said guides to press yieldingly against the edges of the note sheet; a pneumatic; a spring acting on said pneumatic to close it, said spring being more powerful than the aforesaid guide controlling spring; a connection between said pneumatic and said levers; and a compressed air connection to said pneumatic whereby the pneumatic is eX- panded and the guides are freed to press on the edges of the note sheet.

4. An automatic musical instrument having, in combination, a. tracker; I a transversely swinging frame; a music roll and a take up roll ournaled in said frame; transversely movable guides between which the note sheet travels as it passes from the music roll to the take-up roll and over the tracker; levers acting on said guides; a spring connecting said levers and causing said guides to press yieldingly against the edges of the note sheet; a link connecting said levers; a pneumatic; a spring acting on said pneumatic to close it; said spring being more powerful than the aforesaid spring which connects said levers; a connectionbetween said pneumatic and said levers; and an air connection to said pneumatic whereby the pneumatic is moved in opposition to its spring and the guides are freed to press on the edges of the note sheet.

5. An automatic musical instrument hav ing, in combination, a tracker; a transversely swinging frame having side bars pivoted therein; a tie-rod connecting said side bars; a music roll and a take-up roll journaled in and between said side bars; transversely movable yielding guides between which the. note sheet travels as it passes from the music roll to the take-up roll and over the tracker, said guides bearing yieldingly on opposite edges of the note sheet; and pneumatic means to render both of said guides effective and ineffective by moving said guides to and from each other.

6. An automatic musical instrument having, in combination, a tracker; atransversely swinging frame having side bars pivoted therein; a tie-rod connecting said side bars; a music roll and a take-up roll journaled in and between said side bars; and transversely movable yielding guides adjacent said tracker between which the note sheet travels as it passes from the music roll to the takeup roll and over the tracker, said guides bearing yieldingly on opposite edges of the note sheet.

7. An automatic musical instrument having, in combination, a tracker; a transversely swinging frame having side bars pivoted therein; a music roll and a take-up roll journaled in and between said side bars; and transversely movable. yielding guides between which the note sheet travels as it passes from the music roll to the take-up roll and over the tracker, said guides bearing yieldingly on opposite edges of the note sheet. v

8. An automatic musical instrument hav ing, in combination, a tracker; a transversely swinging frame having side bars pivoted therein; a music roll and a take-up roll ournaled in and between said side bars; and guides at opposite edges of the note sheet between which the note sheet travels as it passes from the music roll to the take-up roll and over the tracker.

9. An automatic musical instrument having, in combination, a tracker; a laterally movable note sheet supporting frame carrying the music and take-up rolls; spring pressed guides near the tracker bearing on opposite edges of the note sheet when the sheet is traveling over the tracker from one of said rolls to the other, said guides bearing yieldingly on opposite edges of the note sheet and pneumatically controlled means to render both of said guides effective and ineffective by moving said guides to and from each other.

10. An automatic musical instrument having, in combination, a tracker; a laterally movable note sheet supporting frame carrying the music and take-up rolls; and spring pressed guides near the tracker bearing on opposite edges of the note sheet when the sheet is traveling over the tracker from one of said rolls to the other.

11. An automatic musical instrument having, in combination, a tracker; a laterally movable note sheet supporting frame carrying the music and take-up rolls; and yielding guides near the tracker bearing on opposite edges of the note sheet when the sheet is traveling over the tracker from one of said rolls to the other.

12. An automatic musical instrument having, in combination, a tracker, a laterally movable note sheet supporting frame carrying the music and take-up rolls; and guides near the tracker at opposite edges of the note sheet when the sheet is traveling over the tracker from one of said rolls to the other, said guides being movable to and from each other; and means to render both of said guides effective. and ineffective by moving said guides to and from each other;

13. An automaticmusical instrument having, in combination, a tracker; a laterally movable note sheet supporting frame carrying the musicand take-up rolls; and guides near the tracker at opposite edges of the note sheet when the sheet is traveling over the tracker from one of said rolls to the other, said guides being movable to and from each other.

14. An automatic musical instrument hav ing, in combination, a tracker; a swinging adjustable note sheet supporting frame having side bars pivoted therein; bearings in said side bars for a detachable music roll; a take-up roll having a shaft slidingly jour naled in said side bars, and, a drum fast on said shaft; a guide flange having a hub loose on said haft betweeneach end of said drum and the neighboring side bar; a

spring between each end of said drum and the corresponding flange which maintains the hub of said flange against the neighboring side bar; a screw threaded sleeve fast to one of the side bars; a tie-rod screwing at one end into said sleeve and extending beyond said sleeve and its side bar, and rotatively connected with the other side bar but restrained from other movement relatively thereto; a milled turning section on said tie-rod; an outer stop on the screw threaded end of the tie-rod; and an inner stop on the tie-rod adapted to abut against the inner end of said screw threaded sleeve.

15. An automatic musical instrument having, in combination, a tracker; a swinging adjustable note sheet supporting frame having side bars pivoted therein; a screw threaded sleeve fast to one of the side bars; a tie-rod screwing at one end into said sleeve and extending beyond said sleeve and its side bar, and rotatively connected with the other side bar but restrained from other movement relatively thereto; a milled turning section on said tie-rod; an outer stop on the screw threaded end of the tie-roe; and an inner stop on the tie-rod adapted to abut against the inner end of said screw threaded sleeve.

16. An automatic musical instrument having, in combination a tracker; a swinging adjustable note sheet supporting frame having side bars; a screw threaded sleeve fast to one of the side bars; a tie-rod screwing at one end into said sleeve and extending beyond said sleeve and its side bar, and rotatively connected with the other side bar but restrained from other movement relatively thereto; an outer stop on the screw threaded end of the tie-rod; and an inner stop on the tie-rod adapted to abut against the inner end of said screw threaded sleeve.

17 An automatic musical instrument having, in combination, a tracker; an adjustable note sheet supporting frame having side bars; a screw threaded sleeve on one of the side bars; a tie-rod screwing at one end into said sleeve, and rotatively connected with the other side bar but restrained from other movement relatively thereto; and stops limiting the rotation of the tie-rod in both directions.

18. An automatic musical instrument hav ing, in combination, a tracker; an adjustable note sheet supporting frame; and means for adjusting said frame to accommodate note sheets of different widths.

19. An automatic musical instrument having, in combination a tracker; an adjustable note sheet supporting frame having side bars; bearings in said side bars for a detachable music-roll; a take-up roll having a shaft slidingly journaled in said side bars, and a drum fast on said shaft; a guide flange having a hub loose on' said shaft between each end of said drums and the ncigl'iboring side bar; a spring between each end of said drum and the corre sponding flange which maintains the hub of said flange against the neighboring side bar; and means for adjusting the frame to ac commodate note sheets of different widths.

20. An automatic musical instrument having, in combination, a tracker; an adjustable note sheet supporting frame having side bars pivoted therein; bearings in said side bars for the detachable music roll; a takeup rollhaving a shaft slidingly journaled in said side bars, and telescoping guide flanges; springs tending to separate the guide flanges; and means to adjust the frame to accommodate note sheets of different widths.

21. An automatic musical instrument having, in combination, a tracker; an adjustable note sheet supporting frame having side bars; hearings in said side bars for a detachable music roll; a take-up roll permanently journaled in said side bars; and means to adjust the frame to accommodate notesheets of different widths. I

22. An automatic musical instrument having, in combination, a tracker; a laterally swinging note sheet supporting frame; a driven shaft for the music roll journaled in said frame and having a slotted crank arm; a drive shaft for the music roll having a crank pin extending through said slot with a sliding and driving fit; a driven shaft for the take-up roll journaled in said frame and having a slotted crank; and a drive shaft for the music roll having a crank pin extending through said slot with a sliding and driving fit.

23. A1'1 automatic musical instrument hav ing, in combination, a tracker; a movable note sheet supporting frame; a driven shaft for the music roll journaled in said frame and having a slotted crank arm; a drive shaft for the music roll having a crank pin extending through said slot with a sliding and driving fit; a driven shaft for the takeup roll. journaled in said frame and having a slotted crank; and a drive shaft for the music roll having a crank pin extending through said slot with a sliding and driving fit.

24:. An automatic musical instrument having, in combination, tracker; a movable note sheet supporting frame; a driven shaft for the music roll journaled in said frame; a drive shaft for the music roll; a driven shaft for the take-up roll journaled in said frame; a drive shaft for the music roll; and compensating connections between each of said drive shafts and the corresponding driven shaft.

25. An automatic musical instrument having, in combination, a box' having wooden walls containing the tracker, the music roll and the take-up roll; a gear operatively' connected With the take-up roll; a shaft for said gear; a metal plate secured to a Wooden Wall of said box; a bearing for said gear shaft connected with said plate; an adjustable bearing screwing in said plate and having an eccentric bore; a shaft sliding and rotating in said adjustable bearing; and a pinion on said shaft adapted to engage said gear.

26. An automatic musical instrument having, in combination, a box with Wooden Walls containing the tracker, the music roll and the take-up roll; a gear operatively connected with the take-up roll; a shaft for said gear; a metal plate secured to a Wooden Wall of said box, a bearing for said gear shaft connected with said plate; a second bearing in said plate; a shaft sliding and rotating in said second bearing; and a pinion on said shaft adapted to engage said gear.

27. An automatic musical instrument having, in combination, a tracker, a music roll and a take-up roll; a gear operatively connected With the take-up roll; a shaft for said gear; an adjustable screw threaded bearing having an eccentric bore; a shaft sliding and rotating in said adjustable bearing; and a pinion on said shaft adapted to engage said gear.

In Witness whereof, I have hereunto signed my name.

WILLIAM E. HASKELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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