US1211029A - Music-sheet changer for mechanical musical instruments. - Google Patents

Description

A. ZOLLINGER.

MUSIC SHEET CHANGER FOR MECHANICAL MUSICAL INSTRUMENTS.

APPLICATION men APR. II. 1914.

1,21 1,029, Patented Jan. 2, 1917.

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A. ZOLLINGER.

MUSIC SHEET CHANGER FOR MECHANICAL MUSICAL INSTRUMENTS.

APPLICATION FILED APR. 11. 1914.

1,21 1,029, Patented Jan. 2, 1917.

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MUSIC SHEET CHANGER FOR MECHANICAL MUSICAL INSTRUMENTS.

APPUCATION FILED APR.11.19\4.

1,21 1,029. Patented Jan. 2, 1917.

5 SHEETS-SHEET 3.

A. ZOLLINGER.

MUSIC SHEET CHANGER FOR MECHANICAL MUSICAL INSTRUMENTS.

APPLICATION FILED APR. 11. 1914.

1,21 1,029. Patented Jan. 2, 1917.

5 SHEETS-SHEET 4.

A. ZOLLINGER.

MUSIC SHEET CHANGER FOR MECHANIC/H; MUSICAL INSTRUMENTS.

APPLICATION FILED APR. 1|. 19x4.

1,21 1 ,029. Patented Jan. 2, 1917.

5 SHEETS-SHEET 5- m: mun urns 00., mom-mum. WASHINUIUN u c UNITED STATES PATENT OFFICE ADALBERT ZOLLINGER, OF LEIPZIG-EUTRITZSCH, GERMANY, ASSIGNOR TO THE FIRM OF POPPER & 00., GESELLSCHAFT MIT BESCHRANKTER HAFTUNG, 0F LEIPZIG,

GERMANY.

MUSIC-SHEET CHANGER FOR MECHANICAL MUSICAL INSTRUMENTS.

Application filed April 11, 1914.

To all whom it 11mg concern:

Be it known that I, ADALBERT ZOLLINGER, a subject of the Grand Duke of Baden, residing at Leipzig-Eutritzsch, in Germany, have invented certain new and useful Improvements in Music-Sheet Changers for Mechanical Musical Instruments, of which the following is a specification.

The object of this invention is to provide improved apparatus for automatically changing music-sheets in mechanical musical instruments, for example in mechanical instruments actuated by coin freed motors.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a sectional elevation of the music sheet magazine together with means for moving the same- Fig. 2 is a front View of the same parts. Fig. 3 is an elevation of an automatic indicator. Fig. 4 is a horizontal cross section of the magazine. Fig. 5 is a side view of the principal parts of the sheet changing mechanism, and Figs. 6 and 7 are a front view and plan view respectively of this part of the instrument. Fig. 8 shows part of the sheet feed mechanism. Fig. 9 is a diagram of the whole ap paratus.

In the drawings, 1 designates the take-up roller, and 2 the tracker board. The music sheets to be used are wound upon reels 6, and each of them has at its front or outer end a rod 10 adapted to engage with the flanges of the roller 1, these flanges being notched for that purpose. The rods 10 are normally engaged with notches 35 of the magazine 31. The reels 6 are mounted one above the other in the magazine 31, the frame or holder 32 of which is vertically movable between guides 32 arranged in front of the instrument. The magazine 31 can be taken out of the frame 32, in order that a fresh magazine may be inserted, and the reels 6 are also separately removable, so that they may be changed. The magazine, with its frame or holder 32, is drawn upward by means which will be described hereinafter, and descends by gravity, for which purpose it may be released by hand or by means of an automatic device.

For starting the instrument a coin chute 62, (Fig. 9) is provided, through which a coin. can be dropped on to a lever 63, to tem- Specification of Letters Patent.

Patented Jan. 2, 1917.

Serial No. 831,105.

porarily close an electric contact 64. The latter closes an electric circuit including an electromagnet (35, which attracts an armature 66 and thus releases a lever 67, the movement of which closes an electric contact (58 in the circuit of an electric motor 69. The latter actuates the pneumatic apparatus, together with means for moving the magazine'and feeding the sheets. The movement of the lever 67 also causes a rod 70 to open a valve 71., enabling air to flow through a pipe 72 into the chamber I of the pneumatic control apparatus or windchest 73, which is of a known type. This produces suction in a pipe 74 having branches which lead to pneumatics 33 and Figs. 5 and 9), which are accordingly contracted. The pneumatic 33 acts through a. steel band on a pulley 34, to the shaft of which is fixed a cam 40. Against the latter rests a clutch lever 37 controlling a clutch 78. For clearness this lever, together with the clutch 78 and the shaft 38 carrying the clutch, are shown in Fig. 9, to the right of. the part shown in Fig. 5, with the axis of the shaft 38 in the plane of the figure, whereas actually the shaft 38 is perpendicular to that plane. A flat part of the cam allows the lever 37 to be moved by a spring 77, so that the clutch 78 engages a toothed wheel 79 loose on the shaft 38. The wheel 79 is engaged with a toothed wheel 80 fixed to the take up roller 1, and rotates the latter. To the shaft carrying the pulley 34: are fixed hooked arms 11, which engage the rod 10 of the music sheet to be played, this rod lying in their path in two of the notches 35 of the magazine. The said arms transfer the said rod to the roller 1, which draws the sheet across the tracker board 2.

The pneumatic 7 5 already mentioned acts by means of a rod 76 on a valve 82, which it rocks, the housing of this valve being hinged, and connected by a flexible union to a pipe 81. An arm 83 fixed to the valve 82 is placed in the path of a tappet 84 on the wheel 80, so that the rotation of the latter opens the valve. This causes air to enter the chamber II of the wind-chest 73, and suction is produced in a pipe 85, whereby a pneumatic 86 is caused to collapse. This pneumatic acts through a rod 87 on the rod 70, and closes the valve 71 again. with the result that the pneumatic eXpands and the valve 82 is restored by a spring to its normal position.

ll hen the first piece of music on the sheet has been played a hole in the tracker board admits air to a pipe 83 leading to the chamber TIT. of the wind-chest 73, and sum tion is produced in a, pipe 89, whereby a pneumatic contracted, and lifts, by means of a rod 91, the lever 67, so that the motor circuit is broken and the take up roller stops. At the same time a pneumatic :35 is contracted and moves the pointer 51 of an indi ator. The latter has an index sheet 61, which moves with the magazine and on which the numbers of the pieces of music are marked. 11 rod 57 connected to a spring 58 acts on the pointer, and tends to hold the same opposite the numeral 1 marked on the index sheet in the section appertaining to the music sheet in use. When the piece 1 has been played the pneumatic depresses a pawl 59, and moves the pointer down vard one division, return of the pointer being prevented by a pawl 60. This movement of the pointer is repeated after the playing of each piece on the music sheet.

hen the last piece of music on the music sheet has been played a hole in the sheet admits air to a pipe 92 leading to the chamber TV 016' the wind chest 73. This produces suction in a pipe 93, and collapse of a pneumatic 91, which moves a valve slide 95 so that the latter places a duct 96 connected to a branch of the pipe 93 in communication with a duct 97 connected to a pipe 98. The latter leads to the pneumatic 86 already referred to, so that this pneumatic is caused to collapse and engage the clutch 78 with a toothed wheel 99 which is loose on the shaft 38 and meshes with a toothed wheel 100 fixed to a sprocket wheel 101. The latter drives, by means of a chain 102, a sprocket wheel 103 fixed to a friction wheel 39. The axle to which the wheels 103 and 39 are fixed is mounted on a bar 104, which is horizontally movable, by means of a lever 106 and a. pneumatic 107 connected to the pipe 93. This pneumatic shifts the bar so that the friction wheel 39 is brought into contact with a, friction wheel fixed to the reel ofi which the music sheet has been wound, so that this reel is revolved for winding the sheet up again. The pipe 98 is also connected to a pneumatic 56, which collapses and acts through a rod 108 on a lever 109, so that a double arm 110 actuated by the lever pushes the two pawls 59 and 60 apart, and enables the pointer 54 to be restored to its normal position by the spring 58.

The rod 10 of the sheet being wound up on its reel the arms 11, which guide it back to-its notch 35 and then drop into their normal position. In doing so,

one of these arms pushes a rod 111 and slightly rotates a lever 112, an arm 113 of which opens a valve 114 and, admits air to a pipe 115 leading to the chamber V of the wind-chest 73. This produces suction in a pipe 116 and causes a pneumatic 117 to collapse, so that the valve slide 95 is moved and breaks communication between the ducts 9i; and 9?. The suction in the pipe 98 thus discontinued, and the pneumatic 36 is expanded by the spring 77, whereby the lever 3'7 is rocked and disengages the clutch from the wheel 99, so that the drive of the friction wheel 39 is discontinued. At the same time the bar 10%. is shifted by the lever 106 so that the friction wheel 39 is removed from the wheel 105. The valve 1% is only opened for a very short time, by reason of the "fact that the pipe 116 is connected to a pneumatic 118, which is caused to col lapse and by means 01 a rod 119 restores the arm 113 to its normal position. A. pipe 120 branched oil the pipe 116 leads to a pneumatic 121, which also collapses when the valve 1H is opened and acts through a rod 122 on the lever 67, whereby the circuit of the motor 69 is broken.

The magazine holder 32, which is at the start in its highest position, is held in that position by a pawl a2. lVhen the arms 11, rocking back to their normal position, rotate'the cam -10, a tappet 4.1 on the latter actuates a lever -12, which disengages the pawl 42 from the magazine holder 32, so

that the latter can descend by gravity. By the time that the rod 10 of the next music sheet is in the path of the arms 11 the tappet 11 releases lever 12 again, and the pawl 1-2 is reengaged with the magazine holder.

When all the music sheets have been played and the magazine holder has reached its lowest position, a tappet 1 1 on the holder closes a switch 13, and thereby closes the circuit of an electromagnet 15, which by att "acting its armature allows an automatic switch 16 to close the motor circuit and open a. valve 17. The latter admits air to a pipe 123 leading to the chamber VI of the windchest 73, whereby suction is produced in a pipe 124-, causing a pneumatic 8 to collapse and actuate a lever 49. The latter engages a clutch 50, which connects a shaft 125 driven by the motor to a shaft 126, on which is a worm 127 driving a worm wheel 51 fixed to a shaft 52. The latter rotates a winch 128, so that a cord 129 pulls the magazine holder upward. When the magazine holder has reached its highest position an abutment thereon opens a valve 53, which admits air to a pipe 131 leading to the chamber VII of the wind-chest, whereby suction is produced in a pipe 132 and causes a pneumatic 133 to collapse, which opens the switch 46, so that the motor stops. At the same time the pneumatic 133 closes the valve 47, so that the pneumatic 48 expands and allows the clutch 50 to be disengaged by a spring. The switch 43 and valve 58 can also be actuated by hand, so that any desired movement of the magazine holder can be caused to take place.

\Vhat I claim as my invention and desire to secure by Letters Patent of the United States is 1. In apparatus for the purpose set forth, the combination of a music sheet magazine, a guide for said magazine wherein the latter is adapted to travel in one direction by gravity, and motor mechanism for moving the magazine in the opposite direction in said guide.

2 In apparatus for the purpose set forth,

the combination of a music sheet magazine, a

guide for said magazine wherein the latter is adapted to travel in one direction by gravity, and motor mechanism for moving the magazine in the opposite direction in said guide, said motor mechanism including an electric motor, an electric contact device, a motor pneumatic and a clutch controlled by said pneumatic.

In apparatus for the purpose set forth, the combination of a music sheet magazine, a guide for said magazine wherein the same is adapted to travel in one direction by gravity, motor mechanism for moving said magazine in the opposite direction in said guide, means for retaining said magazine in elevated positions in said guide, a take-up roller, means for transferring sheets from said magazine to said roller, means for wind ing sheets off said roller and returning same to said magazine, and means whereby on completion of the return of a sheet to said magazine said retaining means are disengaged.

at. In apparatus for the purpose set forth the combination of a music sheet magazine, a guide for said magazine wherein the latter is adapted to travel in one direction by gravity, motor mechanism for moving the magazine in the opposite direction in said guide, a take-up roller, a tracker board, means for transferring sheets from said magazine across said tracker board to said take-up roller, an index sheet holder, a movable pointer adjacent said index sheet holder, and pneumatically actuated mechanism associated with said tracker board for moving said pointer.

In witness whereof I have signed this specification in the presence of two witnes%s.

ADALBERT ZOLLINGER. Vitnesses RUDOLPH FRIOKE, J OXIS KRAHL.

Copies of this patent may he obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. 0.

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