US854689A - Controlling device for automatic musical instruments. - Google Patents

Description

No. 854,689. PATENTED MAY 21, 1907. G. H. DAVIS. CONTROLLING DEVICE FOR AUTOMATIC MUSIGAL INSTRUMENTS.

APPLIOATION FILED BEPT.27.1905.

3 SHEETS-SHEET l.

PATENTED MAY 21, 1907.

G. HQ DAVIS. CONTROLLING DEVICE FOR AUTOMATIC MUSICAL INSTRUMENTS.

APPLICATION FILED SEPT. 27.1905.

3 SHEETS-SHEET 2.

m MR 0 m w w NM). \M/m QM, wm n o mm \o i w witmuwo No. 854,689. PATENTED MAY 21. 1907.-

- e. H. DAVIS.

CONTROLLING DEVICE FOR AUTOMATIC MUSICAL INSTRUMENTS.

APPLICATION FILED 8BPT.27,1906.

3 SHEETS-SHEET 3.

9 g5 3 26 V E8 66 @g. /0. 34 46 989mm 7 6M UNITED sT rns PATENT orrion.

GEORGE HOWLETT DAVIS, OF WEST ORANGE, NEW JERSEY.

('Jriginal application filed November 26,

Specification of Letters Patent.

Patented May 21,1907.

1901, Serial No. 83,687. Divided and this application filed September 27 1905' Serial No. 280,334.

To all whom it may concern:

Be it known that I, GEORGE HOWLETT DAVIS, a citizen of the United States, residwhich the following is a specification.

' tion as provided for by will This invention relates to certain new and useful improvements in electrical self-playing musical instruments, and is a division of my application, Serial number 83.687, filed Nov. 26, 1901.

The resent improvement relates more particular y to a novel construction of music roll holder, and to novel and improved means for winding and rewinding the music sheet on its delivery and take-up rolls.

The invention also has in view means associated withthe roll holder for accommodating music rolls of varying'width.

The invention has for its object further to provide novel and simple means for varying the speed of travel of the music sheet.

To these and other ends the invention con sists in the novel features of construction and combinations and arrangements of parts hereinafter referred to in detail and then more definitely brought out in the claims.

In order to enable othei s skilled in the art touunderstand, make and use my said inventhe patent statute, I

proceed to descri e the same in detail,

- reference being had for this purpose to the accomp anying Figure 1 1s a vertical transverse sectional drawings in whichview of my improved attachment, shown as applied to a piano the music roll holder being shown attached to the under side of the piano keyboard; Fig. 2 is a side view of the music roll holder showing the mechanism for varying the speed at which the music sheet is driven; Big. 3 is' a vertical longitudinal seetional view of the music roll holder, the same being shown partly drawn out or extended beyond the front edge of the piano key base;

Fig. 4 is a vertical sectional view taken on the line 4 -4; of Fig, Fig. 5 is-a detail view of the frame carrying the metallic contact roller;

Fig. 6 is a bottom plan view of the music roll holder; Fig. 7 is an end view of the'same, portions being shown-in section Fig.

8 is a detail.

. end bearing extended.

take-up roller; Fig. 9 is a detail sectional view illustrating the manner of journaling the delivery roller; and Fig. 10' is a detail view of the hook for holding the adjustable Before proceeding to describe the construction of, my improved attachment, 1 will explain that it relates to that class of piano playing attachment wherein a perforated music sheet is caused to travel over a metal lic roller which forms an electric circuit, a series of metallic fingers or brushes, termed selectors resting on the music sheet at a point where it passes over the contact roller. Said selectors are e ual in number to the piano keys and a con ucting wire leads from each selector to an electromagnet, there being one electro-magnet for each piano key. Each of said magnets controls mechanism for actuating its corresponding piano key, the construction of which is such that when any particular operation the corresponding actuating mechanism and operates its piano key to sound a note. Conducting wires lead from each electro-magnet to a battery or other electric generator and from the latter a conducting wire-leads to the contact roller. It follows, therefore, that as long as an imperforate portion of the music sheet lies between the se lectors and the contact roller the circuits will be broken by the music sheet and none of the piano keys will be actuated. Whenever a perforated portion of the music sheet, however, comes between the end of any of the sclectors and the contact roller, said selector will immediately spring into contact with. said roller and close the circuit through a cor responding magnet and actuate a corresponding piano key. This broad principle of operation is common 1n self-playing musical 1nstruments previously patented to me, and is only briefly present invention to be more readily understood.

1 have shown my improved music roll holder in connection with the well known shoe and roller keyactuating means, such as exhibited in prior patents granted to me. This actuating means isshown in Fig. rand in saiddi ure the reference numeral} desig View showing the gearing connected ,to the'j l'pendent from the under side of the key baserof outlined herein to enable the the piano. This drum is rotated byan elec-' friction shoe 8, said friction shoe bein suspended above and normally held'out contact with the drum 1, by means of the springs 6. Pivoted to theupper outer corner of each shoe 8 is a vertically movable striker rod 9,

the upper end of which is provided with a head 10, adapted to impinge the projection 11 driven into the rear end of the piano key 12, all as more clearly shown in Fig. 1. The drum 1 is continuously rotated in the direction of the arrow, Fig. 1, by the motor 2, andwhenever oneof the electromagnet's 4 is energized' through,the means hereinafter described, it attracts its armature 5, thereby depressing the rod 7 carried by it and forcing the curved lower face of the shoe 8 into contact with the drum. Owing to the rotation of the drum, the shoe is rocked about its pivotal connection with the rod 7, as acenter, thereby thrusting the striker rod 9 up ward. against the extension 11' of the piano key 12, causing the rear end of the latter to move upward and through the usual hammer action sound the note.

My improved music holder comprises two horizontally sliding frames movable to ether and independently of one another an both sup orted by a fixed frame secured to the un er side of the base of the piano keyboard, 'said music holder being constructed as follows.

The numeral 13 indicates a flat rectangular and open metallic frame secured to the underside of the key basein any suitable manner and having opposite parallel depending sides 14 provided'with outwardly and horizontally extending vflanges 15.

The music holder proper comprises an up- I erand a lower rectangular open metallic :from the selector-bar '19, and from each other, there being as many selectors as there rame respectively indicated-by the numerals 16 and 17, the sides 'of the frame 16 being provided with internal. longitudinal grooves 18, into which the flanges 15 loosely project, said flanges forming ways on which the frame 16 may be slid in and out beneath the keyboard of the piano. of description, I term the frame 16 the seleetor frame. Mounted between the sides of the frame 16 is a transverse bar 19 in which are fixed'the selectors 20, each consisting-of a metallic brush the brushes being insulated are piano keys to be operated. -The opposite lower edges'of the sides of the selectorv frame 16 are-provided with inwardly and the selectorsl For the convenience loosely project 1nto corresponding grooves 22 formed in the upper outer portions of the sides of the frame 17, which'l-term the rollholder frame. The roll-holder frame may be freely slid back and forth on the flafnges' 21 or both the selector and roll holder frame may be slid in and out together on the flanges 15 of the fixed frame 13. l r Journaled in the-frame 17. in the manner hereinafter described, is a delivery roller 23 and a take-up roller 24, the delivery roller being the roller on which the perforated music sheet 25 is wound and the take-up roller operating to unwind the music sheet.

from the deliver roller. Pivoted as at 26,

to lugs 27 forme .on the outer ends of the op-' posite sides of the roll-holder frame 17, are two arms 28, united. at th'eirinner ends by a cross-b ar 29, preferably formed integral'with or metal'cov'ered roller, overwhich the clearly shown in Fig. 3. A coiledspring 32- said-arms. J ournaled in bearings formed 1 on the inner ends of the arms 28jisrthid con tact roller 31, consistingof a metallic roller,

is arranged between the under side of the cross-bar 29 and a transverse integral-web 33 uniting the two sides of the roll-holder frame, and operates to normally. hold the contact roller in engagement with the ends of On'the outer or freeends of the arms 28 are formed outwardly and horizontally projecting lugs or projections 34, which are adapted to engage the u per sidesof the flanges 21 of; the selector rame 16.

As shown by dotted lines in Fig. 3, the outer ends of the flan es 21- are bevel-ed, as at 35,

and have forme at their upper sides immediately in rear of said beveled portions grooves or recesses 36, in which the lugs34 rest when the two frames 16 and 17 are closed together. Pivoted to the inner end' ortion of each of the arms 28 is one end of a ink-37, the other end of which is pivoted'tooneend of a bell crank lever or trigger 38," ivoted as at 39, to theside of the roll hol er frame.

The free or depending end 40 of: the, lever ro jects below the roll-holder frame an formed tobe conveniently engaged ,by a finger of the hand to draw out theroll-holder' rame. .When the operator enga es said trigger-levers to draw out-the rol'f holder frame, the pressure on said levers first rocks them on their'pivots 39, and through themedium of the links 37 depresses theinnerends of the arms 28, and the roller 31, thereby lifting the lugs 34 out of the grooves lor recesses 36, whereupon theroll-holder frame is released from the selector frame andmay be freely drawn out; This-movement also lowers the contact-rollers 31, away from the selectors 20, so that there is no danger of'said selectors catching in the perforations of the lnusic'sheet and being thereby brokembent I end of which has fixed thereon a pinion 64 v or otherwise injured. When the roll-holder frame is pushed back into place beneath the selector frame the lugs 34 ride up the inclined ends 35 of the flanges, thereby lowering the contact-roller until said lugs settle into the grooves or re'c'esses 36, upon which the spring raises the roller into contact with the sefactors and holds the lugs seated in said grooves, thus locking. the-roll-holder and se' ector frames together.

Inorder to cause the music sheet to travel over the contact rollerat any desired speed, I provide the following means. Referring to Figs. 1, 2 and 6, the numeral 41 indieatesa Shaft journaled in any suitable manner he- -neath the piano keyboard, and having fixed pendently thereof, is a relatively large frie thereon a pulley 42, which is driven b y a belt 43 from a pulley 44 on the drum 1. Movably mounted on, but incapable of rotating indetion disk 45, which is held in frictional en- 'gagement with a smaller friction wheel 46 by a coiled spring 47 arranged on the shaft 41 and bearing against a collar 48, on said shaft. As shown, the periphery of the friction wheel 46 bears against the face of the disk 45, and said friction wheel is fixed on a shaft 49,

'which is longitudinally movable in a bearing formed in a bracket pendent from the under side'of the key-base and in a worm 51 which is rotatably mounted in a bracket 52 fixed to one side of the selector frame 16, said worm being splined on the shaft 49, so that it can slide thereon but not rotate independently thereof. The worm 51 gears with a worm wheel 53 (see Figs. 1, 2 and 8) journaled in one end of a swinging arm 54, the other end of said. arm being pivoted on the journal of the take-up roller 24. Fixed on the journal of the worm wheel 53 is a pinion 55, which gears with a gear wheel 56 fixed on the end of the take-up roller 24 and thus rotates the latter to wind up thereon the music sheet 25. By mounting the worm wheel in theend-of the swingin g arm in the manner described, the forinenis permittml to'rise and lower slightly when engaging and disengaging the.

worm, which it must do whenever the rollholder frame 17 is moved in and out independen tly of the selector frame 16. A pm 57 is fixed in one side of the roll holder frame and acts as a stop or support for the swinging arm when said f ramc is drawn out. Fixed to orformed on the outer edge 'of one side of the selector frame 16 is a circular graduated dial or disk 58; pivoted centrally to the under side of which one end of a lever 59, termed by me a tqmpodever, said lever being provided atits outer end with a handle 60 (see Fig. 7) and with a pointer 61, which overhangs the graduations on the disk or dial. Pivotod to the tempo-lever is one end of a slotted liar 62, the other end of which is pivoted to the outer end of a lever 63 {the mner (see Fig. 6) and is pivoted to a bracket arm 65 fixed to one side of the selector frame 16.

The inner end of the tempo-lever in like manner has fixed thereon a similar pinion 66, and both said pinions gear with a rack-bar. 67,

that-is supported to move longitudinally by headed pins 68 and 69, which project from the under sides of the bracket arm 65 and disk 58, respectively, and extend through the slots\70 formed in the ends of the rackbar. Pivoted to bracket-arm 71 fixed to the frame 13,is a bell crank lever 72, the end of one arm of which is provided with a headed pin 73 which projects through the slot 74 in the slotted bar 62, and pivoted to the end of the other arm of said'bell-crank lever is one end of a rod 75, the other end of which is hooked into a loop 76, formed centrally in a rod 77 which is' pivotally.connected at its upper end to an eye 78 on the rear end of the frame 13, and at its other end is loosely loo ed, as at 79, about a peripherally grooved (JOlfftI 80 fixed by a set screw on the shaft 49.

The operation of this part of the device is as follows. Let it be assumed that the parts are in the position shown in Fig. 6, wherein the selector and roll-holder frames are shown pushed in beneath the keyboard, and in which position the take-up roll will be driven at its fastest speed. Now if the lever 59 be swung about its pivot in the direction of the arrow, it will draw forward with it and at the same time move the slotted bar 62 toward the music holder or toward the left as viewed in the drawing. This movement of the slotted bar rocks the bell-crank lever 72 on its pivot and thrusts rearward the rod or link 75, thereby swinging the lever 77 rearward and moving the shaft 49 in the same direction,

thus shifting the friction Wheel nearer to the center of the friction disk 45 and conseq ucntly reducing the speed of rotation of the shaft 49. The shaft 49 being geared to the take-up roller througl'i the gearing described, said roller will also, therefore, be driven at a slower speed and cause the music sheet to travel over the contact roller at a correspondingly slower speed. By gearing the slotted bar 62 to the rack-bar 67 in the manner described, said slotted bar will always remain parallel with the adjacent side of the music holder and hence a given movement of the tempo-lever will impart a corresponding movement to the bell crank lever 72 irrespective of the position of the tempo-lever. By connecting the tempo-lever to the bell crank lever 72 by means of the slotted bar 62 latethe spee'd of travel of the? music sheet irrespective of the position of .the selector frame whether it be entirely pushed in" or drawn out or at an intermediate point.

In order to readily remove the delivery roller from its frame so as to change from one music sheet to another, and in order-to re-' Wind the music sheet thereon, I journal the delivery roller in the frame in the manner, and provide rewinding mechanism, will now describe. A' trunnion 81 is fixed on each end of the deliveryroller 23, (see Figs. 7 and 9) and is provided with one or more laterally projecting lugs or win s 82 Journaled in each side of is a spindle 83, provided atone end With'a head-84, and havmga central SOGkOli-dll which. the trunnion 81 is ada ted to be loosely fitted, and also having a s ot pr recess 85 forthe reception of the lugs 82, whereby the. delivery rol er and said s indle are caused to rotate together. The spindle adjacent to the head 84 is provided with an integral collar or enlargement 86, that is adapted to fit within a corresponding'soeket 87 formed in the inner side of the frame 17. the spindle 83 is a pinion 88 that is disposed- 'Splined on Piv in -a recess 89 formed in the frame 17.

oted on the pivot pin 39, before referred to,

is a-hooked catch 90, the forked end '91 of which is adapted to hook over the collar 84, as hereinafter explained. On one sidethe frame 17 is provided with an 0 en bearing 92. To journal the delivery rol er in place, one of" the trunnions 81 is inserted in the socket in the end of the spindle 83, and the opposite'trunnion is dropped into the open bear ng 92. Thereare'two sizes of music roll holders on sale on the market and the shorter rolls are too short to be journaled in the manner described. When such rollers.

are to beused the spindle-is drawn out, as shown in Fig. 9, and the hooked catch is which .1

the roll-holder frame 17 swung up or over so as to hook over the spindle behind the head 84, thus holding the spindle in place to be engaged by the trunnion of the shorter roller; end of the roll holder frame to furnish convenjient means for drawing out both said frame and the selector frame om beneath the keyboard. J ournaled on a stud shaft on one side of the frame -17, is a pinion 94, see Fig.2, which gears with the inion 88 before described, and also-journa ed on-a stud shaft on the same side of said frame is a gear wheel 95,

which gears with the pinion 94. A crank or handle 96 is fixed to the gear wheel 95. Afterthe music-sheet has been unwound from the delivery roller it may be rewound thereon by turning the gear wheel 95 by itshan'dle 96, whereby, through the gearing described, the music-sheet may be rapidly rewound onto the delivery roller. By unhooking the end of the music sheet from the take-up roller the delivery roller maybe removed from the frame and another one inserted.

Knobs 93 ,are fixed on the.

. take-up roll'.

Having thus described my invention, what '1 claim as new and desire to secure by Letters Patent is '1; A piano movably sup thereof and a having a orted Y beneath the keyboard apted to be drawn out to bring the music sheet in view and to be moved in underfthe keyboard, ,aglelivery and a take-up roll supported by said music holder, and means for driving the take-up roller when the music holder is in itsdrawn out or pushed in position or in any intermediate position, substantially as described.

. 2. A piano having a music sheet holder and means whereby said holder is'movably supported beneath the keyboard of the piano and adapted to be drawn out to. bring the 'music sheet in view and to be moved in under the keyboard, a delivery and a take up roller supported by said music holder, means for driving the take-up roller and mechanism for varying the speed of said drivin means, said driving and speed changing devices being operativewh'en the-music sheet holder is in its drawn out or pushed in position-or in any intermediate scribed. v x

3. A'piano having 'a laying attachment, compris ng a rotatable rum and means for rotating it, a bodily movable -music-roll .holder frame supported beneath thepiano keyboard and carrying a delivery and 'a take-up roll 'journaled in suitable bearings, a rotary disk driven by the drum, a shaft longitudinall'ymovable in a bearing on the frame of the music-roll holder, gearing intermediate said shaft-and take-up roll, a friction wheel carried by said shaft and having its periphery in frictional eonta'et with the rotary disk, andmanually controlled means for moving the sh'aft longitudinally irres ective of the position of the'music roll ho der frame -to shift the position of the friction wheel relatively to the disk whereby to vary the speed of the 4. piano having a playing attachment, comprising a rotatable drum, means for rotating it, and means actuated by the drum for striking the piano keys, a music sheet.

music sheet holder position, substantially as",de-.

' drum for location of the. slidingmeans for rorro.

a music sheet holder comprising a frame'slida'ble from and beneath the piano keyboard, a delivery and a take-up roll journaled in said frame, means derivin motion from the rotar drum for rotatin the take-up roll, mechanism for chang ing t e speed at which said take-up roll is driven, and means for operating said speed changing mechanism while the sliding frame is in any of its positions, substantially dey scribed.

6. A piano having' a playing attachment,

- comprismg a rotatable drum, means for iotating it, and means actuated bythe drum forstriking the piano ke s,- a music sheet holder slidably arranged 'eneath the piano keyboard, a delivery and a take-up roller journaled in said holder, a friction -disk driven from the drum, a. shaft longitudinallymovable in a bearing carried by said sliding holder, and in a fixed ,bearing, a friction wheel on. said shaft ha its eri hery arranged in frictional contact wit t e face of sai disk, a worm spl' ed on said shaft and movable with the mu 0 sheet holder, gearing driven by said'worm for driving the take-up roller, and means for longitudinallyshifting the shaft to move thefriction wheel towar piano keyboard, a deliver 'roller journaled in said hol er, a friction dis and from the center of the friction disk, substantially as described.

7. A piano" havin a playing attachment, comprising a rotata le drum, means for rotating it, and mechanism .actuated .by the drum for striking the piano keys, a music sheet holder slidably arranged beneath the and a take-u driven from the drum, a shaft longitudinally movable in a bearing carried by said holder and in a fixed bearing, a friction wheel on said shaft having its periphery arran ed in frictional contact with the face of said isk, a worm splined on said shaft and movable with the music sheet holder, a worm wheel and pinionilriven by, said worm, a gear wheel on the take-up gearing with the "pinion, and

means for shifting said shaft lon itudinally independently of the movemento the music sheet holder to move the friction wheel toward and from the center of the friction disk, substantially asdescribed' .8. A piano havin a'playing attachment, comprising a musics eet holder consistiniof y .two independently movable frames slida arranged beneath the piano keyboard, one of said frames carrying a series of selectors, a delivery roller and a -takeup roller'c'arried-by the other frame, a contact-roller arranged between said two rollers, a friction'disk and -means for rotating it, a shaft 10 "tudinally movable'in a bearing carriedb t e selector frame-an in afixed bearing, a iction wheel "rigid on said shaft and having its eriph'ery arran ed in frictional contact with t e'face of said isk, a worm splined on said shaft/and movable withathe selector frame, a swing-- ing ar'm carried by the-roll-holder frame a worm wheel and pinion mounted in thefree .up roller carried b the other frame,- a contact roller arrange between said two rollers,

a friction' 'disk and means for rotating it, a

shaft longitudinally movable in a bearing carried by the selector frame and in a fixed bearing, a friction wheel rigid on said shaft and having its peripher arranged in frictional contact with the ace of said disk, a worm splined on said shaft and movable with the selector frame, a swinging arm carried by.

the roll holder frame a worm wheel and pin ion mounted inthe free end of said swinging arm, the worm wheel gearing with the worm and the pinion with 'a'gear wheel on-the take up roller, me ans for supporting said swingingarm when the two frames are separated, and

means for shifting said shaft longitudinally, 4 as described andfor the pursubstantially pose specified.

10. A piano having a music sheet holder comprising two independently 'movable too frames slidably. arrangedbeneath the piano keyboard, aseries of selectors carried by one of said frames, a deliver roller, a contact roller and a take-up rol er carried by the other of said frames, a'driven shaft, gearing driven by said shaft while the music sheet holder is in any of its positions for driving the take-up roller, s eed changing mechan ism controlled b fhe longitudinal movement of said sha t, a collar on the shaft, a swinging arm pivotally connected at one end to a fixed support and loosely .connected at its other endto said collar, a bell crank lever, a-rod connecting one end of said bell crank "lever to theswinging arm, apivoted lever,

and means slidably connecting said lever with the other end of said bell-crank lever,

whereby when the pivoted lever is turned the said shaft will be shifted longitudinally to change the speed of the driving mechanism independently of the position of the music sheet holder, substantially as described.

11. A piano having a music'sheet holder. comprising two independentl movable frames slidably arranged beneat the'piano "keyboard, a'series ofselectorscarried by one of saidfram'es, a delivery'roller, a contact roller, and. atake-u'p roller carried .by the other of saidfframes, a longitudinally movable driven shaft, gearing driven by said shaft while the music sheet holder is in any of its positions for driving the take-u roller, speed changing mechanism controlle by the longitudinal movement of said shaft, a collar on the shaft, a swinging arm pivotally connected at one end to a fixed sup ort and loosely connected at its other end to said collar, a bell crank lever, a rod connecting one end of said bell-crank lever to the swingiing arm, a pivoted hand-lever, a slotted bar pivotally connected at one end to a swinging arm and at its other end to said pivoted lever, and a projection on the other end of said bell-crank lever and projecting into the slot of said bar, substantially as described and for the purpose specified.

12. A piano having a music sheet holder comprising two independently movable framesslidably arranged beneath the piano keyboard, a series of frames slidably arranged beneath the pianokeyboard, a series of selectors ,carried by one of said frames, a-

delivery roller, a contact roller, and a takeup roller carried by the other of said frames,

a longitudinally movable driven shaft, gearing driven by said shaft while the music sheet holder is in any of its positions for driving the take-up roller, speed changing mechanism controlled by the longitudinal, movement of said shaft, a collar on the shaft, a swinging arm pivotally connected at one end to a fixed support and loosely connected at its other end to said collar, a bell crank lever, a rod connecting one end of said bell crank lever to the swinging arm, a pivoted hand lever, a slotted bar pivotally connected at one end to a swinging arm and at its other end to said pivoted lever, a projection 'on the other'end of said bell crank lever and projecting into the slot of said bar, and means for causing said b'arto always move parallel to a fixed line passing through the fulcrum of theT hand lever, substantially as described.

3. A piano having a music holdercomprising two independently movable frames slidably arranged beneath the keyboard,;a series of selectors carriedby one of said frames, a delivery roller,a contact roller, and a take-uproller carried by the other of said frames, a longitudinally movable driven shaft, gearing driven by said shaft while the :music holder is in any of its positions, for driving. the take-up roller,-speed changing mechanism controlled by the longitudinal movement of said shaft, a collar on' the shaft, a swinging arm pivotally connected at one 'end to afixed support and loosely connected at its other end to said collar, a .bell crank le- 'ver, a rod connecting one end ofsaid bell crank lever to the swinging arm, ahand lever, a slotted {bar pivotally' connected at one end to said hand lever and at its opposite end to an oscillatory arm, a projection on the other end of said bell crank lever projecting into the slot of the slotted bar, pinions fixed respectively on the axes of the hand lever and oscillatory arm, and a longitudinally movable rack-bar engaging said pinions and op,

erating to cause the slotted bar to always move in a direction parallel to a fixed line passing through the axis of-the hand lever, substantially asdescribed. p

14. A piano having a music sheet holder formed of independent slidable members,

means for slidably connecting said members locking lever on its fulcrum and a handle on said manual lever adapted to be grasped to draw out the member carrying said locking lever, the arrangement being such that when the two members are' brought together the detent will engage said beveled projection and will be guided by the latter into the recess to lock the two members together and when the handle of the locking lever is grasped and pulled upon to draw out the said member, said locking lever will be rocked on its fulcrum and raise the detent out of said recess, substantially as described.

15. A piano having a music sheet holder formed of independent slidable members,

a manually operated lever pivoted to the,

Tpiano keyboard, the

- IOO andmeans for slidably connecting said inem member carrying the locking lever and' provided with a handle for withdrawing the said member, a link connecting said manual lever with the detent end of the locking lever,

and a spring arranged under the other end of sa1d lever and operating to force'ihe detent into the said recess, the handle when grasped and pulled upon to draw out the said member operating to raise the detent out of the recess and disengage the two members one from the other, substantially as described.

16. A piano having a music sheet holder formed of independent slidable members and means for slidably connecting said members to the-underside of the piano keyboard, in combination with a series of selectors carried by the upper-of said members, a deliveiiy roller and a take-up roller carried by the other of saidmembers, an oscillatory frame contact roller into engagement with the sevin combination with a series of selectors carsprin move the contact roller into engagement With the selectors and to cause said locking means formed of independent sliding members, andb the upper of said members, a delivery roller and take-up roller carried by the other by the lower member and provided With desaid frame, a spring'for raising one end of the means for rotating said roll to-.wind thecarried by the lower member, a contact roller ournaled in said frame, a spring for raising one end of said frame to move the lectors, and means for drawing" out the member carrying said rollers, and arranged when the said means are operated'to draw out said member to lower the contactroller out of engagement with the selectors, substantially as described. l

17. A piano having a musicsheet holder form ed of independent slidable members, and means for slidably connecting saidmlemhers to the under side of the piano keyboard,

ried by the upper of said members, a delivery roller and a take-up roller carried by the other of said members, an oscillatory frame carried by the lower member andyp'rovided with means for interlocking 'Wl'til thaupper member to lock said members together, a contact roller journaled. insald frame, a

g for raising one end of said fname to.

to lock the two members together, and means for drawing out the member carrying said rollers and arranged when said means are operated to draw out the said member to iower the contact roller out of engagement with the selectors and simultaneously unlock the two members, substantially as described.

Apia-no having a music sheet holder means for slida connecting said members to-the under side of the piano keyboard, in combinat on w th a series of selectors carried ofsaid members, anos'cillatory frame carried tentsatone end adapted to interlock with recesses 1n the upper member to lock said members together, a contact roller 1ournaled in frame tomove the contact roller into engagement with the selectors and cause said etents to engage said recesses, handles pivotedto the lower member for withdrawing the latter, and links pivotally. connecting said handles to thesaid frame, whereby when said handles are operated to draw out the lower member, said detents are raised out of said recesses and the contact roller is lowered out of contact with the selectors, substan-Y iially as described.

19. Ina music roll holder for mechanically operated musical instruments adapted to be operated by a perforated music sheet," a frame, a take-up roll journaled in said frame,

music sheet" thereon, a trackerv arranged par-- allel with sand roll, and IYIGBIISClII'lBd by the frame for accommodatmef mus-1c. spools of different Widths, comprising end-bearings, one of which is adjustable toward and from the mhery'means for holding said adjustable bearing extended, andmeans for rotating said bearing.

v2O. A music roll holder formechanically operated musical instruments adapted to be operated by a perforated music sheet comprising a frame, a take-up roll journaled in the frame, means for rotating said roll to wind the music sheet thereon, a tracker mounted on the frame and over which the sheer.- passes in its travel to the take-up roll, a music spool, and a pair of end. bearin s therefor carried by the frame, a slidab y mounted spindle carrying one of said bearings, a pinion splined on said spindle, and a gearwheel meshing with the-pinion.

21. A music roll holder for mechanically operated musical instruments adapted to be 85 operated by a perforated music sheet, comprising a frame, a take-up roll journaled in the frame, means for rotating said roll to wind" the music sheet thereon, a tracker over which the music sheet passes in 11S travel t6 the take-up roll, a music spool, and a pair of. end bearings therefor carried by the frame, a slidably -mounted spindle carrying one of said bearings, means for rotating said spindle to-rewi'nd themusic'sheet on the music spool, and" a spacer carried by the frame and adapted to be moved into and out of en gagement with the slidably mounted end bearing to hold the latter extended or topermit thesame to be retracted.

l 22. A music roll holder for mechanicallv operated musical instruments adapted to be operated by a perforated music sheet, comprising a frame, a take-up roll journaled in the frame, means for rotating said roll to :05 wind the music sheet thereon, a tracker over which the music sheet passes in its travel to the take-up roll a music spool, and a pair of end bearings therefor-carried by the frame, a slidably mounted spindle carrying one of. 10 said bearings, means for rotating said spindle to rewind the music sheet on the music spool, and a hookpivoted. to the frame andadaptedto be swun in behind the head of the slidably mounts end bearing tohold the. r15 latter extended.

23. A music roll holder for mechanically operated musical instruments, comprising a frame and a tracker carried thereby, a take,-

up roll journaled in the frame, means for ro-- I 9 tating said roll, a music spool, and a pair of end bearings therefor earned by the frame,-a

slidably mounted spindle carrying one of said bearings, a pinion splined on said spindle, a gear Wheel meslnngwlth sald pinion, anda 1 25 hookpivoted to the frame and adapted to be swung over the spindle behind the end bearing carried thereby to' hold the same extended. 24;, A music roll holder for mechanically operated musical instruments, comprising a 1 0 fi ame a hollow knob 'rojectin' from one'iside thereof,atake-up-rol journals intheframe,

andfmeans carried by'the frame for accommodating music-spools of different widths,

( compris ngjend bearings, a,- slidable s in'dle carrying o e of said bearings, said s in le being jouriia ed in the frameand sli able into the said hollow knob a pinion splined on the spindle, and a gear wheel-meshing with the pinion.

' 25. operated musical instruments, com rising a frame, a hollow knob-projecting rom one side-thereof, a take-up roll journaled in the frame, and'me'ans carried by the frame for accommodating music spools of different widths, comprising -endbearings, a slidable spindle carrying one of said bearings, said 4 spindle being journaled for rotation in the said'mechanism', at all times indepen the location of the frame,

frame and having one end projecting into the said 'hollo'w knob, and means for rotating said spindle. I

' 26. A piano having amu'sic -sheet holder comprising a frame movable from and beneat the iano keyboard, a delivery and a take-up r0 1 'ournaled in said frame, meansfor driving t e take-up roll, mechanism-for changing the speed at which the take-up roll is driven, and means for operating said mech anism while the frame is in any of its-positions, substantially as described.

27. A pianohaving a music 'sheet holder comprising a frame movable from and bcneath the piano keyboard, a delivery and, a

take-up roll journaled in said frame, means for driving the take-upioll, mechanism for changingthe speed at which the take-up roll is driven, and means for manually o crating ently of 28. A piano having a playing attachment, comprising a rotatable drum and a motor for rotating it, and a controlling device comprising a music roll holder frame movable beneath the piano key-board and carrying a delivery and a take-up roll, a rotary disk driven by the motor, a shaft supported by the frame 29. A piano having a playing attachment, comprising a rotary drum, a motorfor driving the drum, and means actuated by the drum for operating the sound-producing devices of the piano, a music sheet holder comprising a frame movable from and beneath the piano keyboard, a delivery and a take up roll journaled in said frame, means deriving motion from the motor for rotating the take-up roll,

A music- 'roll'holder' for mechanically mechanism for changing the, speed at which the take-up roll is driven; and means for manually operating said speed mechanism,

said mechanism being operative at all times independently of the location of the movable frame, substantially as described.

30. v A piano having a playing-attachment, comprising a rotatable drum, means for rotating it, and means actuated-by'the drum for operating the sound producing devices of the piano,;a music sheet holder comprising a frame movable from beneath the piano keyboard, a delivery and,a takeeup roll jour' .naled in said frame,-means deriving motion from the motor for rotating the take-up roll, mechanism forchanging the speed at which said take-up roll-is driven, and means for operating said speed changing mechanism while the movable frame is in any of its positions', substantiallyas described.

31. A piano having a playing attachment, comprising a rotatable drum, a motor for rotating it, and means actuated by the drum foroperating the sound producing devices of the piano, a music sheet holder movably arranged beneath the piano keyboard, a delivery and a take-up roller journaled in said holder a friction disk driven from the motor, a shaft longitudinally movable in a bearing carried by, said holder, and 9 in a fixed bearing, a friction wheel on said shaft having its periphery. arranged in friction'al contact with the face of said disk, a worm splined on said shaft and movable with the'music sheet holder,"- gearin'g driven by said worm for driving the take-up roller, and means for longitudinally shifting the shaft to move the friction wheel toward and from the center of the friction disk, substantially "as described;

32. A piano having a playing attachment,

comprising a rotatable drum, a motor for rotatin it, andmechanism actuated by the drum Q01 operating the sound producing devices of the piano, a music sheetf holder movably arranged beneath the piano keyboard, a delivery and a takeup roller journaled in said holder, a friction disk driven from themotor, a shaft longitudinally movable in 'a bearing carried by said holder and in a fixed bearing, a friction wheelon said shaft having its peri hery arranged in frictional contact with tie face of the music sheet holder, a worm wheel and pinion driven by said worm, a gear wheel on the take-up gearing with the pinion, and mcans "for shifting said shaft longitudinally independently of the movement of the music sheet holder to move the friction wheel toward and from the center of the friction disk, substantially as described.

33. A piano having a playing attachment comprising a music/sheet holder and means whereby said'holder is movably supported beneath the key-board of the piano and adapted to be moved in under the key-board and moved out to bring the music sheet in view, a take-up roll andend bearings-for a delivery roll carried by the holder, arotary ings for a delivery roller, and means for driv-.

ing the take-up roller, QOIIIPIISIIIg frictional gearlng, sald gearing being operable to drive the take-up roller irrespective of the position of the bodily movable music-sheet holder.

35. A piano having a playing attachment, comprising a .bodily movable music-sheet holder carrying a take-up roller and end bearings for a delivery -roller,'and driving means for theltake-up roller, said driving means being operable to drive the take-up roller irrespective of the position of the music-sheet holder.

' In. testimony whereof Ihave hereunto set my 11 and in messes.

GEORGE HOWLETT DAVIS; Witnesses .MARGARET A. JACOBS,

J. FRED BERSTEOI-IER, Jr.

presence of two subscribing wit- 3o

Images