US1232197A - Means for automatically controlling sheet-centralizing devices. - Google Patents

Description

G. P. BRAND.

MEANS FOR AUTOMATICALLY CONTROLLING SHEET CENTRALIZING DEVICES.

A APPUCATIQN FILED DEC-25,1913- ifidzafl 9?, Pawnted July 5,1917.

4 SHEETS SHEET Whoa,

G. P. BRAND.

MEANS FOR AUTOMATICALLY CONTROLLING SHEET CENTRALIZING DEVICES.

' APPLICATION FILED DEC. 26, 1913- 1,232,197.

Patented July 3; 1917.

4 SHEETS-SHEET 2.

G. P. BRAND.

MEANS FOR AUTOMATICALLY CONTROLLING SHEET CENTRALIZING DEVICES.

APPLICATION FILED DEC-25, I913- Patented July 3, 1917.

4 SHEETSSHEET 3- Jar/1591 km K WWI/oz,

Z oggmZZ/aai G. P. BRAND.

MEANS FOR AUTOMATICALLY CONTROLLING SHEET CENTRALIZING DEVICES.

APPLICATION FlLD DEC; 26, 1913.

1,232,197. Patented July 3, 1917.

4 SHEETS-SHEE T 4.

GEORGE 1?. BRAND, OF NEW YORK, N. Y.

MEANS FOR AUTOMATICALLY CONTROLLING SHEET-CENTRALIZING DEVICES.

Specification of Letters Patent.

Patented July 3, 1917.

Application filed December 26, 1913. Serial No. 808,862.

f0 all whom it may concern:

Be it known that I, GEORGE P. BRAND, a citizen of the United States of America, and resident of New York, in the county and State of New York, have invented certain new and useful Improvements in Means for Automatically Controlling Sheet-Centralizing Devices, of which the following is a specification.

This invention relates to certain new and useful improvements in automatic centralizing devices for self-playing instruments and the like where a perforated sheet is employed.

The present invention has for its objects among others to provide a novel means for controlling the sheet centralizing means and consists broadly in automatically-movable guide openings self-adjusting to different widths of the music sheets.

It has for a further object to provide in connection with said self-adjusting openings means whereby the tracker bar can be shifted endwise for the purpose of transposition.

Heretofore with surface control it has been impossible to move the tracker bar for transposition, as the guide openings have been relatively fixed with relation to the tracker bar, as by movement of the tracker bar the centralizing mechanism would be rendered inoperative. By my present invention movement of the tracker bar for transposition in no wise affects the operation of the centralizing mechanism as the guide openings are not changed in position.

In connection with the above I may or may not, sometimes, employ a flange device for the take-up spool for the purpose of relieving the centralizing device or correcting the inaccuracies of the music sheet after it has been wound upon the take-up spool by preventing lateral shift of the music sheet after it has been wound upon the latter, thus keeping the sheet in perfect parallelism, and avoiding injury to the sheet, by preventing distortion and wrinkling, thereby guarding against the sounding of false notes. I obtain such accurate and perfect relation be tween the guide openings and the music sheet that the sheet has practically no lateral deviations, that is, so minute as not to b perceptible to the eye.

Other objects and advantages of the invention will hereinafter appear and the novel features thereof will be particularly pointed out in the appended claims.

The invention is capable of embodiment in various forms, some of which only are herein illustrated.

In such drawings,

Figure 1 is a front elevation with portions removed showing the application of my present improvement.

Fig. 2 is a rear elevation of the same.

Fig. 3 is a vertical transverse section on the line 33 of Fig. 1.

Fig. 4 is an enlarged detail of the rear face of the tracker bar, with the bar broken in two.

Fig. 5 is a cross section on the line 5-5 of Fig. 4 looking in the direction of the arrows.

Fig. 6 is a cross section on the line 6-6 of Fig. 4 looking in the direction of the arrows.

Fig. 7 is a vertical section taken through the primary valve chest.

Fig. 8 is a section on the line 88 of Fig. 7 looking in the direct-ion of the arrows.

Fig. 9 is a section on the line 9 9 of Fig. 7, looking in the direction of the arrows.

Fig. 10 is a rear elevation similar to Fig. 2, showing a modified form.

Fig. 11 is an enlarged detail of a portion of the tracker bar.

Fig. 12 is a cross section on the line 12-12 of Fig. 11, looking in the direction of the arrows.

Fig. 13 is a face view of the rotary valve member of the flange actuating mechanism.

Like numerals of reference indicate like parts throughout the different views.

Referring to the drawings,

1 designates the tracker bar, 2 the take-up roll, 3 and 4 the spindles for the music spool. 5 the ends of the music box. 6 the top thereof and 7 the bottom. The transmission mechanism is of any suitable type into the details of which it is not necessary to go at this time, except as hereinafterexplained in connection with the present invention.

The tracker bar 1 is provided with openings or holes 8. In addition to these holes which serve the usual purpose in devices of this character, the tracker bar is provided, near each end, preferably out of alinement and above the holes 8, with an elongated slot 9, 9, as seen clearly in Fig. 1. These elongated slots serve an important function as will hereinafter appear.

Looking now at Fig. 4 which represents the rear face of the tracker bar 1, it will be noted that near each end thereof I mount a plate 10 which is constructed to slide with but little friction, being in the present instance shown as guided in its longitudinal movements from the back of the tracker bar by pins or the like 11 secured in the rear face of the tracker bar and received in the slots 12 in said plates. In order to hold the plates 10 against lateral displacement, I provide suitable means, as a kee er 13, shown in said Fig. 4, which, while (coping the plates against the rear face of the bar and preventing lost motion, permits of ease of movement of said plates in their reciprocations.

To each of the plates 10 is secured a tube 14, 14 which projects through the slots 9, 9

near the front face of the tracker bar for cooperation with the music sheet, as will be hereinafter explained.

To each slide is connected an arm 15, 15, the two arms extending beyond the same end of the tracker bar, as seen in Figs. 1 and 4,

being guided and supported near their outer ends in the plate 16 on the end of the tracker bar, as seen clearly in Fig. 4.

7 As clearly shown in Fig. 1, the arm 15 connected with one of the slides 10 is connected by a link 17 with a rock arm 18 and the arm 15 is connected with the other sliding plate 10 connected by link 19 with the said rock shaft upon the other side of its pivot. The rock arm 18 is pivotally mounted between its ends, as at 20, upon a suitable upright or support 21. 22 is a spring having one end connected to some fixed part and its other end connected with the lower sliding arm 15. The lower end of the rock arm 18 is connected by the arm 23 with the movable member of a pneumatic 24 mounted upon one side of the support 21 and the upper end of said rock arm 18 is connected by the arm 25 with the movable member of a pneumatic 26 secured upon the opposite side of said upright or support 21. 27 is a double pneumatic, the center member 28 of which is movable, the outside members 29 and 30 being relatively stationary. This double pneumatic may be supported in any suitable manner, as by the braces 31, extending from the upright or support 21, as seen in Fig. 1, and at the bottom by braces 32 and 33 connecting the stationary members 29 and 30 respectively with said upright 21 or any suitable fixed portion of the machine. 34 is a spring connecting the movable member 28 with the fixed member 30 of said double pneumatic, for the purpose of counteracting the spring in the spring spindle 4 of the music roll.

35 is a chest for the primary valves. It is mounted in any suitable manner, as, for in stance, upon the upright 21, and reference is now made to Figs. 7, 8 and 9 in connection therewith for the detailed construction thereof. The chest is made in sections, as seen in said Fig. 7, the sections having upon their adjacent faces depressions forming chambers 36 and 37. 38 and 39 are diaphragms in said chambers respectively. Cooperating with said diaphragms are the valves 40 and 41 respectively, working in the chambers above said diaphragms. These valves have the stems 42 and 43 respectively, which work loosely through openings in the top of the chest and carry the valves 44 and 45 respectively. 46 is a tube connecting the passage 47 in the chestcontrolled by the valves 40 and 44 with the coupling 48, which. in turn, is connected by the tube 49 with the double bellows 27 upon the outer side of the movable member 28 thereof. The tube 50 connects the passage 51 controlled by the valves 41 and 43 with the coupling 52, which, in turn, is connected by the tube 53 with that portion 'of the double bellows 27 upon the other side of its movable member 28, as seen clearly in Fig. 2. The coupling 52 is connected by the tube 54 with the pneumatic 26, while the tube 55 connects the coupling 48 with the pneumatic 24. I

The portion of the chamber 36 beneath its diaphragm is connected through the pasby the passage 58 and tube 59 with the tube 14 movably mounted in the slot 9 of the tracker bar. 60 is a tube connected with the tension chest or any other tension-producing portion of the player and through the passage 61 in the support 21 and the cross passages 62 and 63 and lateral passages 64 and 65 respectively with the chambers 36 and 37. Y

66 is a tube connecting the passage 61 in the support 21 with the valve chest 67 mounted upon the music box, a tube 68 connecting said chest with the fixed member of the rotary valve controlling device 69. 70 is a pneumatic mounted upon the upper portion of the music box aud'having affixed thereto an arm 71, with which is pivotally connected a link 72 attached at the other end to the pin or connection 73 which joins the arms 74 and 75 pivotally mounted, as at 76, upon some fixed support and carrying the members 77 which are forked or otherwise formed to embrace the spindles 78-and 79 of the take-up spool, the ends of said members 77 bearing against the hub 80 of the movable flanges 81, as seen clearly in Fig. 1. The flanges are normally forced outward by springs 82, seen in Fig. 1.

83 is a rod disposed at the back of the music box and connected at one end with the movable member 28 of the double bellows 27 its other end being passed through a lever 84 between adjustable bumpers or buttons 85 on the threaded end 86 of said rod, said lever 84 being pivoted, as at 87, on a suitable arm or support 88 extending from the end 5 of the music box and this lever intermediate its ends bears against the extended end 89 of the music roll spindle 3, as seen clearly in Figs. 1 and 2.

The rotary valve member 90 has an opening 91, said valve member being revoluble with the spindle of the take-up roll and designed to bring, at each revolution, said opening 91 coincident with an opening 92 in the side member 69.

Projecting laterally from the pneumatic 70 is an arm 93 designed for contact with an arm 94 pivotally mounted, as at 95, on some fixed support, as the block 96, secured to the music box, the said member 94 being in the form of a bell crank, the depending arm 97 of which is pivotally connected, as at 98, with a screw-threaded member 99 adjustably retained within an adjusting member 100 revolubly mounted in the end 5 of the music box.

With the parts constructed and arranged substantially as hereinbefore described, the operation, briefly stated, is as follows. The parts are so arranged that the pneumatics 24 and 26 under normal conditions are inflated or forced apart by the pulling action of the spring 22 upon the bar 15*, which tends to rock the rocker arm 18 in the direction of the arrows seen in Fig. 1. Under these conditions, the tubes 14 and 14 are brought together to their utmost limit. Supposing the music roll to be placed in position and the music sheet drawn over the tracker bar and attached to the take-up spool, when the player is started and the music sheet is caused to traverse over the tracker bar, the tubes 14 and 14 over which the sheet rides start to move outward or away from each other toward the edges of the sheet until one or the other, or both, of said tubes, reaches a point where it is slightly uncovered by the sheet, thereby admittin suflicient air to reverse one or both of sai primary valves 44, 45, according to whether one or both of said tubes is open to the atmosphere. If the sheet is not centralized, one guide opening 14 or 14 will be exposed before the other. Consequently, the one that is opened or exposed first actuates its primary, admitting atmospheric air into the corresponding chamber of the pneumatic 27 and also the corresponding pneumatic 24 or 26, rendering such portion of the pneumatic 27 and its corresponding pneumatic 24 or 26 inoperative and allowing the opposite chamber of said pneumatic 27 and its corresponding pneumatic 24 or 26 to be still in operative relation, because the other guide hole 14 or 14 on the opposite side is still covered by the music sheet, keeping its rimary closed and putting the other cham er of the pneumatic 27 and its corresponding pneumatic 24 or 26 in communication with the tension chamber through the connections above described, causing the atmospheric pressure to partially collapse the first-named portion of the pneumatic 27 and its corresponding pneumatic 24 or 26. This condition remains until the covered opening reaches a point where it is partially uncovered by the music sheet, in the meantime the first-named opening having moved farther outward, the latter now becoming What might be called dead or inoperative. When the last opening becomes uncovered, its primary is actuated and its chamber of the pneumatic 27 becomes inoperative together with its corresponding pneumatic 24 or 26, when the spring 22 actuates the rock arm 18, forcin the last-named guide opening back so it is fully covered by the sheet and causes its primary to give another impulse, which still further collapses its corresponding portion of the pneumatic 27 and its cooperating pneumatic 24 or 26, again exposing the said guide opening. This op eration is continued until the sheet is perfectly centralized and both guide openings are brought back so as to be completely covered by the music sheet. After once being centralized, it remains so, for, notwithstanding the fact that the guide openings are practically at all times in motion, the movement is so slight that the lateral deviation of the sheet is so slight that it may be said to never get out of its centralized position.

The inflation of one portion of the pneumatic 27 and deflation of the other and vice versa, which is at all times occurring during the movement of the guide openings 14, 14 imparts back and forth movement to the rod 83, moving the lever 84 upon its pivot and moving the spindle 3 in one direction but allowing it to be moved in the opposite direction by its spring, so as to at all times keep the music sheet in centralized position. It is to be noted that the back and forth movements of the rod 83 are very slight, in fact, almost infinitesimal, so as to hardly be perceptible to the eye, as the mechanism is so quick and positive in its action that the sheet cannot get far out of its centralized position.

By the employment of my improved mechanism as above described, the ragged or crimpled or torn edges of the music sheet absolutely makes no difference and the mechanism is unaffected thereby, thus insuring perfect sounding of the notes.

In order to insure that the music sheet be evenly wound upon the take-up spool after being centralized, the rotary member 90 is caused to revolve with the take-up spool and at each revolution the opening 91 in said rotary member arrives at a point where it coincides with the port 92 in the fixed member 69 and through the medium of the tube 68 which communicates with the diaphragm chamber of the valve chest 67, atmospheric air is admitted through this port or open ing 91 and the port 92 to said diaphragm chamber, causing the collapse of the pneumatic 70 which, through the medium of the arm 71 and link 72, causes a movement of the rods 74 and 75, so as to actuate the arms 77 and move the flanges 81 inward against the edges of the music sheet. As soon as the rotary member 90 moves so that its opening 91 no longer coincides with the port-92 in the fixed. member, and, consequently, the latter is closed, the pneumatic 70 is inflated and the flanges 81, by means of the springs in their spindles, are forced outward. The in-. ward movement of the flanges 81 maybe limited, and such movement may be varied by means of the projection 93 on the movable member of the pneumatic contacting with the arm 94, the adjustment of the latter being obtained by rotating the adjusting member 100 in one direction or the other, as may be desired.

For the purpose of transposition when desired I provide the tracker bar with notches upon its under side, as seen at 101 at the left Fig. 1, with which engages the latch 102, as seen in said figure, which serves to hold the tracker bar in any of its lengthwise adjusted positions. This adjustment in no wise affects the movable openings 14 14 or the operation of the mechanism accessory thereto, yet permits of perfect registration in whatever key the tracker bar may be.

set for.

In some instances I may employ two movable openings or tubes at each end of the tracker bar, as shown in Fig. 11, and thus dispense with the primary valves, although the said primary valves may be employed as well in connection with this modified form. Fig. 10 shows a device in which the two movable openings at each end of the tracker bar are employed, and in this instance the pneumatic 70", and the parts 71 72 73*, 74 75 76*, 77*, 83*, 84?, 85 86*, 87*, se 89 90 93 3*, 4 21 24*, 2o, 60*, 61", 66*, 67", 68*, and 69 are the same in all particulars and in operation as the correspondingly indicated parts 1n the form shown in Figs. 1 and 2 without the character The tracker bar 103 is provided at its ends with elongated slots through which project the tubes 105 106, arranged one above the other, each set of two tubes being carried by a plate 107, the two plates being mounted upon the rear face of the tracker bar and adapted to slide in the same manner as the plates 10 in Fig. 1, and to be gulded 1n the same way. The rods 15 and 15 attached to these plates 107 are attached to a rocker arm similar to the rocker arm 18 in Fig. 1, and the spring 22 is connected and acts in the same manner as the spring 22 in said Fig. 1. The ends of the rocker arm are connected to the pneumatics 24. and 26 the same as in Fig. 1.

In lieu of the double pneumatic 27, I employ two pneumatics 108 and 109 supported in any suitable manner from the support 21*. The pneumatic 108 connects by tube 110 with the upper hole 105 at one end of the tracker bar and the lower hole 106 at the same end is connected by tube 111 with the pneumatic 26*. The upper hole 105 at the other end of the tracker bar connects by tube 112 with the pneumatic 109 and the lower tube 106 connects by tube 113 with the pneumatic 24*, as seen in Fig. 10. From the passage 61 there connects a tube 111 that leads to the passage 115 in the block 116 from which extends the cross passages 117 and 118 into which open the bleeds 119 and 120 from the pneumatics 109 and 108, all as' clearly shown in Fig. 10.

121 and 122 are bleeds from the. pneumatics 24* and 26 into the passage 61".

The operation is substantially the same as in the form before described, except that instead of employing the primary valves with alternate pressure, atmospheric and exhaust, the pressure is continuous on the operating parts (the pneumatics) through the bleeds shown, the upper holes or tubes 105 controlling the centralizing of the music sheet and the lower holes or tubes 106 controlling the pneumatics 24 and 26 and the latter, in turn, causing the guide openings or tubes to move outwardly in accordance with the different widths of sheets.

In the form shown in Figs. 1 and 2, the primary valves may sometimes be dispensed with, in which case the hole at one end of the tracker bar will operate one of each of the pneumatics 2 1 and 27, or 26 and 27, and the other hole will operate the other two.

A reversal of the primary valves and the rocker arm 18 and the connections of the same with the slides 10 in Figs. 1 to 9, and the spring 22 would result inmoving the tubes 14 and 14 outward or away from each other instead of toward each other, so that" they would be normally uncovered by the sheet when the player is .out of operation, and when the player is started the said tubes would start to move toward eachother, until they are covered by the sheet. I should consider a full equivalent of the construction and arrangement hereinbefore described.

.Other modifications in detail, proportion of parts, etc., may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages.

This reversal Where, in the following claims, I refer to a single air-conveying duct at each end of the trackerbar I wish to be understood as meaning a single air-conveying duct in the longitudinal direction of the traokerbar, and not excluding such an arrangement as shown in Figs. 11 and 12 where while there are two ducts at each end of the trackerbar,.

they are disposed transversely of its length. It is intended that such claims shall include this latter construction.

What is claimed as new is 1. A normally-fixed trackerbar provided within its longitudinal limits with an 0 ening exposed to be covered by a note s eet and automatically movable independently of said bar and within the longitudinal limits of the fixed portion thereof. 1

2. A normally-fixed trackerbar provided within its longitudinal limits with a sheetcentralizing opening exposed to be covered by a note sheet and automatically movable independently of. all portions of the trackerbar and within the longitudinal confines thereof.

3. A trackerbar provided within its longitudinal limits with automatically movable means movable independently of the bar for centralizing the music sheet. and means for automatically adjusting said automatically movable means to different widths of sheets.

4. A normally-fixed trackerbar and a relatively movable opening within the longitudinal limits thereof and exposed to be covered and controlled by anote sheet and disposed for automatic movement lengthwise of the trackerbar and within the longitudinal limits thereof.

5. A normally-fixed trackerbar and an automatically movable opening within the longitudinal limits of said bar and exposed to be covered and controlled by a note sheet, movable independent of all portions of and in the direction of the length of said bar and within the longitudinal limits thereof for controlling the lateral deviations of a music sheet inone direction.

6. A normally-fixed trackerbar, means within the longitudinal confines of said bar movable with relation thereto, and sheetcentralizing means including a sheet controlling opening at all times within the fixed portion of said trackerbar and movable with said means independently of said bar and exposed to be covered and controlled by a note sheet.

7. A fixed tracker bar provided with an elongated slot, and a port movable independently of said bar with relation to said slot, and means for automatically adjusting the said portto difi'erent widths of a music sheet, said slot and port being in longitudinal alinement with the trackerbar.

8. A fixed tracker bar provided with an elongated slot, and a port movable with relation to said slot, said slot and port being in longitudinal alinement with the trackerbar, and means for automatically moving said port.

. 9. A relatively fixed tracker bar provided with an elongated slot, and a port movable with relation thereto, said slot and port be ing in longitudinal alinement with the trackerbar and pneumatic means for automatically moving said port. 4

10. A relatively fixed tracker bar, with an elongated slot, and automatically-movable openings in proximity to each other, in longitudinal alinement with said trackerbar and slot and cooperating with a music sheet,

the one to centralize the sheet and the other to automatically control the movement of said openings in one direction.

11. A trackerbar provided with automatically movable openings in pairs at each end of the tracker-bar, said openings being in transverse longitudinal alinement with and,

movable independently of the trackerbar.

12. A tracker bar provided with elongated slots, means slidable with relation to the tracker bar, and carrying openings, and means for automatically moving the sliding means to move said openings to and from each other.

13. A trackerbar, sliding means thereon, oppositely movable tubes carried by said means within the longitudinal confines of said trackerbar for cofiperation with a music sheet, and pneumatic means for automatically moving said tubes.

14. A trackerbar provided with elongated slots, tubes in longitudinal alinement with the tracker-bar and movable in said slots, means carrying said tubes, and rocking means connected with said means for moving them. I

15. A tracker bar provided with elongated slots, tubes in longitudinal alinement with 'the trackerbar and movable in said slots,

slidable means carrying said tubes, and rocking means connected with said means for simultaneously moving said tubes in opposite directions.

16. A trackerbar, tubes movable with relation thereto, and automatic means for moving said tubes, the same being disposed within the longitudinal confines thereof and simultaneously movable in opposite direc tions.

17. A tracker bar, tubes disposed Within the longitudinal confines thereof and movable with relation thereto. and pneumatic means with an interposed rocking element for moving said tubes.

18. A trackerbar, an air-conveying member disposed within the longitudinal confines thereof and movable with relation thereto, and automatic means for moving said member.

19. A normally fixed trackerbar, pneumatically-operated air-conveying means disposed within the longitudinal confines of the fixed portion of said trackerbar and mounted for movement with relation thereto, and a centralizing member controlled thereby.

20. A normally fixed tracker bar, means slidable with relation thereto and carrying sheet-controlling means in longitudinal alinement with the trackerbar, pneumatics, and a rocking member connected with said pneumatics for causing the actuation of said slidable means.

21. A tracker bar, normally fixed, means slidable with relation thereto and carrying sheet-controlling means in longitudinal alinement with the trackerbar, pneumatics, a rocking member connected with said'pneumatics for causing the actuation of said slidable means, and a spring acting in opposition to said pneumatics.

22. A tracker bar, provided with an automatically-movable port, and means for looking said port indifferent positions for the purpose of transposition.

23. A normally fixed tracker bar provide with automatically-movable sheet controlling means movable independently of the tracker bar, and means for transposition without affecting the operation of said con-' trolling means, said movable sheet controlling means bein in longitudinal alinement with the tracker a1.

24:. A fixedly mounted trackerbar having near each end a single movable air-conveying duct, said ducts being disposed in longi tudinal alinement with the trackerbar and automatically separable by the movement of a note sheet in either direction laterally.

25. A fixedly mounted trackerbar having near each end a single air-conveying duct, said ducts being disposed in longitudinal alinement with the trackerbar, and a pneumatic connected with each duct for moving the latter simultaneously in opposite directions. 26. A musical instrument having movable air-conveying ducts disposed in longitudinal alinement wlth the trackerbar and arranged singly with relation to each other and simultaneously movable, and pneumatic means connected with said ducts to simultaneously move the same bodily.

27. A musical instrument having movable air-conveying ducts disposed in longitudinal alinement with the trackerbar and arranged singly with relation to each other and simultaneously movable, and pneumatic means connected with each of said ducts to simultaneously move the same bodily.

28. Movable air-conveying ducts movable solely as ducts and arranged singly, and

pneumatic means connected with said ducts to simultaneously move the same, and sheetcontrolling means controlled by said ducts. 29. Movable air-conveying ducts movable of openings arranged singly, a movable tracking opening for each margin of a note sheet and pneumatics for moving said openings, each controlled separately by one of said openings for automatically moving the same in opposite directions. 1

32. In a device of the character described, a plurality of movable ducts arranged singly, a. plurality of pneumatic devices controlled by said ducts, said ducts being movable bodily and alone automatically in opposite directions.

33. In a device of the character described, two ducts arranged singly and controlled by a note sheet, and pneumatic devices controlled by said ducts for causing the sheet and ductsto move laterally.

34. In a device of the character described, two ducts arranged singly and controlled by a note sheet, and pneumatic devices controlled by said ducts for causing the sheet to move in either direction, and also moving the ducts in-directions opposite to each other. 1

. 35. A plurality of movable ducts arranged singly, pneumatic devices and connections for automatically causing said ducts to move simultaneously in opposlte directions and a note sheet to be moved in either direction by said pneumatic devices.

36. A plurality of movable openings arranged singly, pneumatic devices and connections for automatically causing said ducts to move simultaneously in opposite directions and a note sheet to be moved in either direction by said pneumatic devices.

37. In a device of the character described, a normally fixed trackerbar, a plurality of pneumatic devices, movable means arranged singly and directly controlled by a note sheet for operating said pneumatic devices to cause the note sheet to be moved laterally, said movable means being disposed within the confines of said trackerbar and automatically movable in opposite directions.

38. A normally-fixed trackerbar provided Within its longitudinal limits with a duct having an opening exposed to be covered by a note sheet and automatically movable independently of said bar and within the longitudinal limits of the fixed portion thereof.

39. A normally-fixed trackerbar provided within its longitudinal limits with a, duct having a sheet-centralizing opening exposed portions of and in the direction of the length to be covered by a note sheet and automatiof said bar and Within the longitudinal 11mcally movable independently of all portions its thereof for controlling the lateral devia of the trackerbar and Within the longituditions of a music sheet in one direction.

5 ml confines thereof. Signed by me at Washington, D. G, this 15 40. A normally-fixed trackerbar and an 20th day of December 1913.

automatically movable duct having an open- GEbRGE P. BRAND. ing within the longitudinal limits of said Witnesses: bar and exposed to be covered and controlled E. H. BOND,

10 by a note sheet, movable independent of all JoHN SCRIVENER.

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